spring boot集成mybatis和springsecurity实现登录认证功能

参考了很多网上优秀的教程，结合自己的理解，实现了登录认证功能，不打算把理论搬过来，直接上代码可能入门更快，文中说明都是基于我自己的理解写的，可能存在表述或者解释不对的情况，如果需要理论支撑，可以网上在找一下相关文章学习，或者直接访问框架官网Hello Spring Security :: Spring Security

本文主要通过IDEA创建spring boot工程，并加载mybatis和spring security相关配置，完成系统登录认证功能

创建spring boot工程

点击File->New->Project，分别按照下述步骤创建spring boot工程

依次在Developer Tools选择Spring Boot DevTools、Lombok

Security选择spring security

在SQL目录下选择MyVatis Framework 和MySQL Driver，右侧可以看到已经选择的框架，上方可以选择spring boot的版本

这几项选完以后，spring boot就会自动帮我们加载好这些框架\依赖

因为spring boot的新版本不太熟悉，可以改成比较成熟的2.4.2版本

因为后边的开发中，会继续添加几个相关的依赖，所以后边的内容均以已经完成的完整项目代码为例进行说明

完整的pom文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.sgp</groupId>
    <artifactId>ss</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>ss</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
        <mysql-connector-java.version>8.0.17</mysql-connector-java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.0</version>
        </dependency>
        <!--<dependency>-->
            <!--<groupId>org.thymeleaf.extras</groupId>-->
            <!--<artifactId>thymeleaf-extras-springsecurity6</artifactId>-->
        <!--</dependency>-->

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector-java.version}</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--<dependency>-->
            <!--<groupId>org.mybatis.spring.boot</groupId>-->
            <!--<artifactId>mybatis-spring-boot-starter-test</artifactId>-->
            <!--<version>3.0.3</version>-->
            <!--<scope>test</scope>-->
        <!--</dependency>-->
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>java-jwt</artifactId>
            <version>3.19.2</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>0.9.0</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.4.6</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>4.2.1.Final</version>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <!--<resource>-->
                <!--<directory>src/main/java/com/sgp/ss/mapper</directory>-->
                <!--<targetPath>mapper</targetPath>-->
            <!--</resource>-->
            <!--<resource>-->
                <!--<directory>src/main/resources</directory>-->
            <!--</resource>-->
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <!--<include>**/*.properties</include>-->
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <!--<resource>-->
                <!--<directory>src/main/resources</directory>-->
                <!--<includes>-->
                    <!--<include>**/*.properties</include>-->
                    <!--<include>**/*.xml</include>-->
                <!--</includes>-->
                <!--<filtering>false</filtering>-->
            <!--</resource>-->
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

完整配置文件application.properties如下：

spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp

server.port=8080
spring.jackson.serialization.FAIL_ON_EMPTY_BEANS=false
spring.main.allow-bean-definition-overriding=true

# Show or not log for each sql query
spring.jpa.database = MYSQL
spring.jpa.show-sql = true
spring.jpa.open-in-view=false

# database
spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&useOldAliasMetadataBehavior=true&serverTimezone=UTC
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=root

mybatis.mapper-locations = classpath:com/sgp/ss/mapper/*.xml

完整的代码目录如下：

mybatis配置与代码

mybatis主要的配置涉及以下几个地方：

1，pom文件配置

因为在代码目录中，*Mappee.xml文件放在了main/src/java目录下，所以需要在pom文件中配置不要过来/java目录下是xml文件，如果不添加这个配置，那么在target文件包下就没有xml文件，项目就会报Invalid bound statement (not found)的错误，而且一定要注意标签include内的内容，一定要写成**/*xml这个形式，其他形式都不要写

这部分配置可以参考BindingException:Invalid bound statement (not found)异常_bindingexception: invalid bound statement-CSDN博客

2，application.properties文件配置

配置xml文件的扫描位置，这个需要在配置文件application.properties中配置，建议写完整路径，这样不容易出错，一定要注意，路径中不能出现空格等特殊符号！

3，启动类注解

最后开启项目启动后对mapper文件进行扫描，需要在启动类上添加注解

@MapperScan(basePackages = "com.sgp.ss.dao")

4，相关代码

上述配置完成后，编写数据库表以及相应的dao，dto，entity，service，mapper文件，然后application.properties文件中配置数据库，把所有数据库的相关代码编写完成，比如测试登录验证用的用户信息表，具体如下：

#数据库建表语句 CREATE TABLE `user` ( `id` int(11) NOT NULL AUTO_INCREMENT, `username` varchar(255) DEFAULT NULL, `password` varchar(255) DEFAULT NULL, `permission` varchar(255) DEFAULT NULL, `role` varchar(255) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=latin1

#entity对象

package com.sgp.ss.domain.entity;

/**
 * @author shanguangpu
 * @date 2023/2/22 17:33
 */
public class UserEntity {

    private Long id;

    private String username;

    private String password;

    private String permission;

    private String role;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getPermission() {
        return permission;
    }

    public void setPermission(String permission) {
        this.permission = permission;
    }

    public String getRole() {
        return role;
    }

    public void setRole(String role) {
        this.role = role;
    }
}

#dto对象

package com.sgp.ss.domain.dto.data;

/**
 * @author shanguangpu
 * @date 2023/2/22 17:32
 */
public class UserDto {

    private Long id;

    private String username;

    private String password;

    private String permission;

    private String role;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getPermission() {
        return permission;
    }

    public void setPermission(String permission) {
        this.permission = permission;
    }

    public String getRole() {
        return role;
    }

    public void setRole(String role) {
        this.role = role;
    }
}

#DAO代码

package com.sgp.ss.dao;

import com.sgp.ss.domain.dto.data.UserDto;
import com.sgp.ss.domain.entity.UserEntity;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * @author shanguangpu
 * @date 2023/2/22 17:34
 */
@Repository
public interface IUserMapper {

    public void truncate();

    /**
     * 新增对象
     *
     * @param
     * @return
     */
    public void insert(UserEntity userEntity);

    /**
     * 更新对象
     *
     * @param
     * @return
     */
    public void update(UserEntity userEntity);

    /**
     * 删除记录
     *
     * @param
     * @return
     */
    public void delete(Long id);

    /**
     * 根据主键获取对象
     *
     * @param id
     *            主键字段
     * @return
     */
    public UserEntity getUserEntityById(Long id);

    public UserEntity getUserEntityByName(String username);

    /**
     * 根据查询Bean获取对象集合，不带翻页
     *
     * @param queryBean
     * @return
     */
    public List<UserEntity> queryUserEntityList(UserDto queryBean);


}

#service接口文件

package com.sgp.ss.service;

import com.sgp.ss.domain.dto.data.UserDto;
import com.sgp.ss.domain.entity.UserEntity;
import org.springframework.stereotype.Component;

import java.util.List;

/**
 * @author shanguangpu
 * @date 2023/2/22 17:49
 */
@Component
public interface UserEntityService {

    public void truncate();

    /**
     * 新增对象
     *
     * @param
     * @return
     */
    public void insert(UserDto userDto);

    /**
     * 更新对象
     *
     * @param
     * @return
     */
    public void update(UserDto userDto);

    /**
     * 删除记录
     *
     * @param
     * @return
     */
    public void delete(Long id);

    /**
     * 根据主键获取对象
     *
     * @param id
     *            主键字段
     * @return
     */
    public UserEntity getUserEntityById(Long id);

    public UserEntity getUserEntityByName(String username);

    /**
     * 根据查询Bean获取对象集合，不带翻页
     *
     * @param queryBean
     * @return
     */
    public List<UserEntity> queryUserEntityList(UserDto queryBean);

}

#service实现类

package com.sgp.ss.service.impl;

import com.sgp.ss.dao.IUserMapper;
import com.sgp.ss.domain.dto.data.UserDto;
import com.sgp.ss.domain.entity.UserEntity;
import com.sgp.ss.service.UserEntityService;
//import com.sgp.ss.util.BeanUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * @author shanguangpu
 * @date 2023/2/22 17:50
 */
@Service
@Transactional
public class UserEntityServiceImpl implements UserEntityService {

    /** LOG */
    private static final Log LOG = LogFactory.getLog(UserEntityServiceImpl.class);

    @Autowired
    private IUserMapper userMapper;

    @Override
    public void truncate() {

    }

    @Override
    public void insert(UserDto userDto) {
        try {
            if (null != userDto) {
                UserEntity entity = new UserEntity();
//                BeanUtils.copyProperties(userDto, entity);
                entity.setId(userDto.getId());
                entity.setUsername(userDto.getUsername());
                entity.setPassword(userDto.getPassword());
                entity.setPermission(userDto.getPermission());
                entity.setRole(userDto.getRole());
                userMapper.insert(entity);
            } else {
                LOG.warn("UserEntityServiceImpl#insert failed, param is illegal.");
            }
        } catch (Exception e) {
            LOG.warn("UserEntityServiceImpl#insert failed, UserEntity has existed.");
            throw e;
        }
    }

    @Override
    public void update(UserDto userDto) {
        boolean resultFlag = false;
        try {
            if (null != userDto) {
                UserEntity entity = new UserEntity();
                entity.setId(userDto.getId());
                entity.setUsername(userDto.getUsername());
                entity.setPassword(userDto.getPassword());
                entity.setPermission(userDto.getPermission());
                entity.setRole(userDto.getRole());
                userMapper.update(entity);
            } else {
                LOG.warn("UserEntityServiceImpl#update failed, param is illegal.");
            }
        } catch (Exception e) {
            LOG.error("UserEntityServiceImpl#update has error.", e);
        }
    }

    @Override
    public void delete(Long id) {
        userMapper.delete(id);
    }

    @Override
    public UserEntity getUserEntityById(Long id) {
        UserEntity userEntity = null;
        try {
            if (null != id) {
                userEntity = userMapper.getUserEntityById(id);
            } else {
                LOG.warn("UserEntityServiceImpl#getUserEntityById failed, param is illegal.");
            }
        } catch (Exception e) {
            LOG.error("UserEntityServiceImpl#getUserEntityById has error.", e);
        }
        return userEntity;
    }

    public UserEntity getUserEntityByName(String username){
        UserEntity userEntity = null;
        try {
            if (null != username) {
                userEntity = userMapper.getUserEntityByName(username);
            } else {
                LOG.warn("UserEntityServiceImpl#getUserEntityByName failed, param is illegal.");
            }
        } catch (Exception e) {
            LOG.error("UserEntityServiceImpl#getUserEntityByName has error.", e);
        }
        return userEntity;
    }

    @Override
    public List<UserEntity> queryUserEntityList(UserDto queryBean) {
        List<UserEntity> userEntities = null;
        try {
            userEntities = userMapper.queryUserEntityList(queryBean);
        } catch (Exception e) {
            LOG.error("UserEntityServiceImpl#queryUserEntityList has error.", e);
        }
        return userEntities;
    }
}

#mapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

<mapper namespace="com.sgp.ss.dao.IUserMapper">
    <resultMap id="UserEntityMap" type="com.sgp.ss.domain.entity.UserEntity">
        <result column="id" property="id" jdbcType="DECIMAL" />
		<result column="username" property="username" jdbcType="VARCHAR" />
        <result column="password" property="password" jdbcType="VARCHAR" />
        <result column="permission" property="permission" jdbcType="VARCHAR" />
        <result column="role" property="role" jdbcType="VARCHAR" />
    </resultMap>
    
    <sql id="UserEntityColumns">
    	id,username,password,permission,role
    </sql>
    
     <sql id="UserEntityUsedColumns">
    	username,password,permission,role
    </sql>
    <!-- 清空表 -->
    <delete id="truncate" parameterType="java.lang.Long">
        truncate table user
    </delete>

    <!-- 创建信息 -->
    <insert id="insert" parameterType="com.sgp.ss.domain.entity.UserEntity">
        INSERT INTO user(<include refid="UserEntityUsedColumns"/>)
        VALUES (#{username},#{password},#{permission},#{role})
	</insert>
	
    <!-- 修改信息 -->
    <update id="update" parameterType="com.sgp.ss.domain.entity.UserEntity">
        <if test="_parameter != null">
            <if test="id != null and id > 0">
                update user set
                <if test="id != null and id != ''">
                    id = #{id,jdbcType=DECIMAL},
                </if>
		        <if test="username != null and username != ''">
                    username = #{username,jdbcType=VARCHAR},
		        </if>
                <if test="password != null and password != ''">
                    password = #{password,jdbcType=VARCHAR},
                </if>
                <if test="permission != null and permission != ''">
                    permission = #{permission,jdbcType=VARCHAR},
                </if>
                <if test="role != null and role != ''">
                    role = #{role,jdbcType=VARCHAR},
                </if>
                	id = id
                where id = #{id}
            </if>
        </if>
    </update>

    <!-- 删除信息-逻辑删除 -->
    <delete id="delete" parameterType="java.lang.Long">
        delete from  user where id = #{id}
    </delete>

    <!-- 根据主键获取对象信息 -->
    <select id="getUserEntityById" resultMap="UserEntityMap" parameterType="java.lang.Long">
        <if test="_parameter != null">
            select <include refid="UserEntityColumns"/> from user
            where id = #{_parameter} and 1 = 1
        </if>
    </select>

    <!-- 根据名称获取对象信息 -->
    <select id="getUserEntityByName" resultMap="UserEntityMap" parameterType="java.lang.Long">
        <if test="_parameter != null">
            select <include refid="UserEntityColumns"/> from user
            where username = #{username} and 1 = 1
        </if>
    </select>

    <!-- 根据查询Bean获取数据集合，不带翻页 -->
    <select id="queryUserEntityList" resultMap="UserEntityMap"
            parameterType="com.sgp.ss.domain.dto.data.UserDto">
        select <include refid="UserEntityColumns"/> from user where <include refid="queryUserEntityListWhere"/>
    </select>

    <!-- 常用的查询Where条件 -->
    <sql id="queryUserEntityListWhere">
    	1 = 1
        <if test="id != null and id != ''">
            and id = #{id,jdbcType=DECIMAL}
        </if>
        <if test="username != null and username != ''">
            and username = #{username,jdbcType=VARCHAR}
        </if>
        <if test="password != null and password != ''">
            and password = #{password,jdbcType=VARCHAR}
        </if>
        <if test="permission != null and permission != ''">
            and permission = #{permission,jdbcType=VARCHAR}
        </if>
        <if test="role != null and role != ''">
            and role = #{role,jdbcType=VARCHAR}
        </if>
    </sql>
</mapper>

mybatis配置完成后，可以编写controller文件进行数据库测试

package com.sgp.ss.controller;

import com.sgp.ss.dao.IUserMapper;
import com.sgp.ss.domain.dto.data.UserDto;
import com.sgp.ss.domain.entity.UserEntity;
import com.sgp.ss.security.LoginUser;
import com.sgp.ss.util.JwtTokenUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @author shanguangpu
 * @date 2023/12/12 14:59
 */
@RestController
public class index {

    @Autowired
    private IUserMapper userMapper;

    @GetMapping(value = "hello")
    public String request(){
        System.out.println("hello word");
        return "hello success";
    }

    @PostMapping(value = "query")
    public String selectInfo(){
        List<UserEntity> userEntities = userMapper.queryUserEntityList(new UserDto());
        return userEntities.toString();
    }

}

由于已经添加了spring security登录验证功能，所以代码中在没有配置spring security的前提下，数据库的测试会被登录验证拦截，所以可以在配置完成security后一并进行测试

spring security配置与代码

spring security的核心就是过滤器链，框架提供了十几种过滤器，其中比较主要的是认证过滤器和JWT过滤器，另外security对用户信息和用户服务功能进行了规范封装，即接口UserDetails和UserDetailsService，所以如果要自定义过滤器，除了要复写几个过滤器外，还要编写用户信息去实现规范用户接口UserDetails和UserDetailsService

1，UserDetails接口实现

首先编写用户登录信息对象实现UserDetails接口，这里为了区别用于数据库查询的用户类，新建Java类继承已有用户类，并实现UserDetails接口。代码如下

package com.sgp.ss.security;

import com.sgp.ss.domain.entity.UserEntity;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

/**
 * @author shanguangpu
 * @date 2023/11/30 15:58
 */
public class LoginUser extends UserEntity implements UserDetails {

    Collection<? extends GrantedAuthority> authorities;

    private Set<String> permissions = new HashSet<>();

    public LoginUser(UserEntity userEntity){
        if (null != userEntity){
            this.setUsername(userEntity.getUsername());
            this.setPassword(userEntity.getPassword());
        }
    }

    public LoginUser(UserEntity userEntity, Collection<? extends GrantedAuthority> authorities){
        this.setId(userEntity.getId());
        this.setUsername(userEntity.getUsername());
        this.setPassword(userEntity.getPassword());
        permissions.add(userEntity.getPermission());
        this.authorities = authorities;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return this.authorities;
    }

    /**
     * 账户是否过期
     * @return
     */
    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    /**
     * 账户是否被锁定
     * @return
     */
    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    /**
     * 证书是否过期
     * @return
     */
    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    /**
     * 账户是否有效
     * @return
     */
    @Override
    public boolean isEnabled() {
        return true;
    }
}

2，UserDetailsService接口实现

然后编写用户服务实现类，实现UserDetailsService接口，这里主要复写loadUserByUsername(String username)这个方法，这个方法就是去数据库查询用户信息，并返回UserDetails对象，代码如下：

package com.sgp.ss.security;

import com.sgp.ss.dao.IUserMapper;
import com.sgp.ss.domain.entity.UserEntity;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

/**
 * @author shanguangpu
 * @date 2023/11/30 15:50
 */
@Component
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    IUserMapper userMapper;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        try {
            UserEntity userEntityByName = userMapper.getUserEntityByName(username);
            if (userEntityByName == null){
                throw new UsernameNotFoundException("用户"+username+"不存在");
            }
            return new LoginUser(userEntityByName);

        } catch (Exception e){
            e.printStackTrace();
        }
        return null;
    }
}

3，过滤器自定义-JWT过滤器

一般登录认证的流程中都会涉及到token，它可以理解为一个标识令牌，用户在第一次登录的时候系统会返回一个令牌token给用户，该用户在下次登录的时候，就不需要携带用户名密码进行请求了，只需要把token带上，系统可以从token中解析出用户信息，对用户进行验证；如果token在有效期内，则系统就会对请求放行，如果过期，则需要重新携带用户名密码进行登录然后再发送请求，并生成新的token返回给用户，所以我们的JWT过滤器主要就是对token进行验证，如果token有效且不为空，则通过token可以获取到用户信息，如果用户信息验证正确，就调用security框架的UsernamePasswordAuthenticationToken方法，生成security框架用户认证信息token，并存放在框架上下文SecurityContextHolder中，以便在下次登录中进行校验，最后过滤器放行，进行下一个过滤器，如果token为空，则直接放行过滤器，进入下一个过滤器生成token返回给用户，代码如下：

package com.sgp.ss.security;

import com.sgp.ss.domain.entity.UserEntity;
import com.sgp.ss.service.UserEntityService;
import com.sgp.ss.util.JwtTokenUtil;
import com.sgp.ss.vo.JwtProperties;
import io.jsonwebtoken.ExpiredJwtException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author shanguangpu
 * @date 2023/12/8 15:29
 */
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {

    @Autowired
    private UserEntityService userEntityService;

    @Autowired
    private JwtTokenUtil jwtTokenUtil;

//    @Autowired
//    private JwtProperties jwtProperties;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {

        //获取token信息
        final String authorization = request.getHeader("token");

        String name = null;
        String authToken = null;

        if (!StringUtils.isEmpty(authorization)) {
            authToken = authorization.replace("Authorization", "");
            try {
                name = jwtTokenUtil.getUsernameFromToken(authToken);
            } catch (ExpiredJwtException e){
                e.printStackTrace();
            }
        }
        if (name != null && SecurityContextHolder.getContext().getAuthentication() == null){
//            if (jwtTokenUtil.isTokenValid(name, authToken)){
                UserEntity userEntityByName = userEntityService.getUserEntityByName(name);
                UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userEntityByName, null, jwtTokenUtil.getAuthorityFromToken(authToken));
                SecurityContextHolder.getContext().setAuthentication(authentication);
//            }
        }
        filterChain.doFilter(request, response);

    }

    public JwtAuthenticationTokenFilter(){
        super();
    }
}

4，过滤器自定义-Authentication认证过滤器

第二个需要复写的过滤器是认证过滤器，这个过滤器的功能就是从输入流中获取用户信息，生成security的token令牌，交给认证管理器AuthenticationManager，

对于登录成功的用户，将生成框架定义的UsernamePasswordAuthenticationToken保存到上下文中，然后调用复写的成功验证方法successfulAuthentication生成token返回给用户，同时也可以复写验证失败的方法，自定义验证失败后的返回信息，代码如下

package com.sgp.ss.security;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.sgp.ss.util.JwtTokenUtil;
import com.sgp.ss.vo.AuthRequestVO;
import org.apache.commons.lang.StringUtils;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author shanguangpu
 * @date 2023/12/11 14:57
 */
public class CustomAuthenticationFilter extends UsernamePasswordAuthenticationFilter {

//    @Autowired
    private AuthenticationManager authenticationManager;

    private JwtTokenUtil jwtTokenUtil;

    /**
     * 这个方法的目的仅仅是为了修改一下默认的登录接口，其他参数均是为了通过WebSecurityConfig配置类实现在本方法中自动注入前边private的类
     * @param tokenUtil
     * @param authenticationManager
     * @param url
     */
    public CustomAuthenticationFilter(JwtTokenUtil tokenUtil, AuthenticationManager authenticationManager, String url) {
        this.jwtTokenUtil = tokenUtil;//传入这个参数的目的，是为了在WebSecurityConfig配置类中将该类注入
        this.authenticationManager = authenticationManager;//传入这个参数的目的，是为了在WebSecurityConfig配置类中将该类注入
        super.setFilterProcessesUrl(url);
    }

    @Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {

        String username = "";
        String password = "";

        //从输入流中获取登录信息
        try {

            AuthRequestVO requestVO = new ObjectMapper().readValue(request.getInputStream(), AuthRequestVO.class);
            username = requestVO.getUsername();
            password = requestVO.getPassword();
            if (StringUtils.isBlank(password)){
                throw new BadCredentialsException("Password cannot be null");
            }

        } catch (IOException e){
            e.printStackTrace();
        }

        UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(username, password);
        this.setDetails(request, authRequest);
        return authenticationManager.authenticate(authRequest);
    }

    @Override
    protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain, Authentication authResult) throws IOException, ServletException {
        LoginUser userDetails = (LoginUser) authResult.getPrincipal();
        String token = jwtTokenUtil.generateToken(userDetails);
        response.setHeader("token", token);

    }

    @Override
    protected void unsuccessfulAuthentication(HttpServletRequest request, HttpServletResponse response, AuthenticationException failed) throws IOException {

        response.getWriter().write("authentication failed");
    }


}

5，WebSecurityConfig配置类

最后就是spring security的配置类，主要配置用户的密码存储编码，http请求的过滤条件，过滤器的顺序等，代码如下：

package com.sgp.ss.config;

import com.sgp.ss.security.*;
import com.sgp.ss.util.JwtTokenUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * @author shanguangpu
 * @date 2023/11/30 15:25
 */
@Configuration
@EnableWebSecurity
//@EnableGlobalMethodSecurity(prePostEnabled = true)
//@EnableConfigurationProperties(JwtProperties.class)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsServiceImpl userDetailsService;

    @Autowired
    JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;

    @Autowired
    private JwtTokenUtil jwtTokenUtil;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception{
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
    }

//    @Bean
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable()//关闭csrf
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)//不通过session获取securityContext
                .and()
                .authorizeRequests()
//                .antMatchers("/").permitAll()
                .antMatchers("/hello").permitAll()
//                .antMatchers(HttpMethod.POST).permitAll()
//                .antMatchers("/user/login").anonymous()//对于登录接口，允许匿名访问
                .anyRequest().authenticated();//所有请求都要经过鉴权认证
        http.exceptionHandling()
                .authenticationEntryPoint(new CustomAuthenticationEntryPoint())
                .accessDeniedHandler(new CustomAccessDeniedHandler());

        //把token校验过滤器添加到过滤器链中
        http.addFilter(new CustomAuthenticationFilter(jwtTokenUtil, authenticationManager(), "/user/login"));
        http.addFilterBefore(jwtAuthenticationTokenFilter, CustomAuthenticationFilter.class);

        http.cors();

    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Bean
    public static PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    public static void main(String[] args) {
        String encode = passwordEncoder().encode("4321");
        System.out.println(encode);
    }

}

上述配置中，还有两个认证失败和权限失败两个处理异常类，代码如下：

package com.sgp.ss.security;

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author shanguangpu
 * @date 2023/12/8 16:00
 */
public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint {
    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
        Throwable t = (Throwable)request.getAttribute(RequestDispatcher.ERROR_EXCEPTION);
        response.setContentType("application/json;charset=utf-8");
        response.getWriter().write("{\"code\":\"403\",\"message\":\"请重新登录\"}");
    }
}

package com.sgp.ss.security;

import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * @author shanguangpu
 * @date 2023/12/8 15:59
 */
public class CustomAccessDeniedHandler implements AccessDeniedHandler {
    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException, ServletException {
        response.setContentType("application/json;charset=utf-8");
        PrintWriter out = response.getWriter();
        out.write("{\"code\":\"403\",\"message\":\"权限不足\"}");
        out.flush();
        out.close();
    }
}

6，JWT工具类

package com.sgp.ss.util;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.sgp.ss.security.LoginUser;
import com.sgp.ss.vo.JwtProperties;
import io.jsonwebtoken.*;
import io.jsonwebtoken.impl.DefaultClock;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import java.io.Serializable;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author shanguangpu
 * @date 2023/2/22 10:42
 */
@Component
public class JwtTokenUtil implements Serializable {

    private static final long serialVersionUID = -1264536648286114018L;

    private Clock clock = DefaultClock.INSTANCE;

    private Map<String, String> tokenMap = new ConcurrentHashMap<>(32);

    public String generateToken(LoginUser loginUser){
        Map<String, Object> claims = new HashMap<>();
        claims.put("username", loginUser.getUsername());
        claims.put("authority", loginUser.getAuthorities());
        String token = generateToken(claims, loginUser.getId() + "");
        if (! StringUtils.isEmpty(token)){

        }
        return token;
    }

    /**
     * 生成token
     * @param claims
     * @param subject
     * @return
     */
    private String generateToken(Map<String, Object> claims, String subject) {
        final Date createdDate = clock.now();
        final Date expirationDate = generateExpirationDate(createdDate);
        return Jwts.builder()
                // 自定义属性
                .setClaims(claims)
                .setSubject(subject)
                // 创建时间
                .setIssuedAt(createdDate)
                // 过期时间
                .setExpiration(expirationDate)
                // 签名算法及秘钥
                .signWith(SignatureAlgorithm.HS512, "sgpsgp")
                .compact();
    }

    private Date generateExpirationDate(Date createdDate) {
        return new Date(createdDate.getTime() + 21600 * 1000);
    }

    // 从得到的令牌里面获取用户ID
    public Integer getUserIdFromToken(String token) {
        Integer id = null;
        try {
            final Claims claims = getClaimsFromToken(token);
            id = Integer.parseInt(claims.getSubject());
            return id;
        } catch (Exception e) {
        }
        return id;
    }

    // 从得到的令牌里面获取用户名
    public String getUsernameFromToken(String token) {
        String username;
        try {
            final Claims claims = getClaimsFromToken(token);
            username = (String) claims.get("username");
        } catch (Exception e) {
            username = null;
        }
        return username;
    }

    // 从得到的令牌里面获取权限
    public List<GrantedAuthority> getAuthorityFromToken(String token) {
        List<GrantedAuthority> list = null;
        try {
            final Claims claims = getClaimsFromToken(token);
            list = (List<GrantedAuthority>)claims.get("authority");
            return list;
        } catch (Exception e) {
        }
        return list;
    }

    // 从得到的令牌里面获取创建时间
    public Date getCreatedDateFromToken(String token) {
        Date created;
        try {
            final Claims claims = getClaimsFromToken(token);
            created = claims.getIssuedAt();
        } catch (Exception e) {
            created = null;
        }
        return created;
    }
    // 从得到的令牌里面获取过期时间
    public Date getExpirationDateFromToken(String token) {
        Date expiration;
        try {
            final Claims claims = getClaimsFromToken(token);
            expiration = claims.getExpiration();
        } catch (Exception e) {
            expiration = null;
        }
        return expiration;
    }

    private Claims getClaimsFromToken(String token) {
        Claims claims;
        try {
            claims = Jwts.parser()
                    .setSigningKey("sgpsgp")
                    .parseClaimsJws(token)
                    .getBody();
        } catch (Exception e) {
            claims = null;
        }
        return claims;
    }


    /**
     * 检查token是否过期
     * @param token
     * @return
     */
    public Boolean isTokenExpired(String token) {
        final Date expiration = getExpirationDateFromToken(token);
        boolean flag = expiration.before(new Date());
        if(flag) {
            String username = getUsernameFromToken(token);
            if(username != null) {
                tokenMap.remove(username);
            }
        }
        return flag;
    }

    public Boolean isTokenValid(String username, String token) {
        if(tokenMap.get(username) != null && tokenMap.get(username).equals(token.trim())) {
            return !isTokenExpired(token);
        }
        return false;
    }

    public Boolean isTokenValid(int id, String token) {
        if (tokenMap.get(id) != null && tokenMap.get(id).equals(token.trim())) {
            return !isTokenExpired(token);
        }
        return false;
    }

    public void deleteToken(String token) {
        String username = getUsernameFromToken(token);
        if(username != null) {
            tokenMap.remove(username);
        }
    }

    public static void main(String[] args) {
        HashMap<String, Object> map = new HashMap<>();

        Calendar calendar = Calendar.getInstance();

        calendar.add(Calendar.SECOND, 60);

        String token = JWT.create()
                .withHeader(map)
                .withClaim("userName", "aaa")
                .withClaim("password", "1234")
                .withExpiresAt(calendar.getTime())
                .sign(Algorithm.HMAC256("abcd"));

        System.out.println(token);

        JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256("abcd")).build();
        DecodedJWT verify = jwtVerifier.verify(token);
        System.out.println(verify.getClaim("userName").asString());
        System.out.println(verify.getClaim("password").asString());
    }

}

postman测试

所有代码编写完成后，可以通过postman进行测试

1，不走登录验证的接口测试

首先验证配置类WebSecurityConfig中放行的/hello地址，这个地址访问的时候不会经过框架验证，直接会得到相应

2，登陆页面返回token测试

然后验证登录页面，使用用户名密码首次登录，会返回token，这个用户名密码需要提前在数据库里创建，为了安全起见，用户密码采用加密的密文存储，加密算法就是代码中配置的BCryptPasswordEncoder()方法，这个可以通过一个简单的Java函数得到，具体如下：

public static PasswordEncoder passwordEncoder(){
    return new BCryptPasswordEncoder();
}

public static void main(String[] args) {
    String encode = passwordEncoder().encode("4321");
    System.out.println(encode);
}

在数据库里存的样式就是下图的样子