Spring Security 使用数据库认证
在 Spring Security 中如果想要使用数据进行认证操作，有很多种操作方式，这里我们介绍使用 UserDetails 、 UserDetailsService来完成操作。
UserDetails
public interface UserDetails extends Serializable {
Collection<? extends GrantedAuthority> getAuthorities();
String getPassword();
String getUsername();
boolean isAccountNonExpired();
boolean isAccountNonLocked();
boolean isCredentialsNonExpired();
boolean isEnabled();
}UserDetails 是一个接口，我们可以认为 UserDetails 作用是于封装当前进行认证的用户信息，但由于其是一个接口，所以我们可以对其进行实现，也可以使用Spring Security 提供的一个 UserDetails 的实现类 User 来完成操作
以下是 User 类的部分代码
public class User implements UserDetails, CredentialsContainer {
private String password;
private final String username;
private final Set<GrantedAuthority> authorities;
private final boolean accountNonExpired; //帐户是否过期
private final boolean accountNonLocked; //帐户是否锁定
private final boolean credentialsNonExpired; //认证是否过期
private final boolean enabled; //帐户是否可用
｝UserDetailsService
public interface UserDetailsService {
UserDetails loadUserByUsername(String username) throws UsernameNotFoundException;
}面将 UserDetails 与 UserDetailsService 做了一个简单的介绍，那么我们具体如何完成 Spring Security 的数据库认证操作哪，我们通过用户管理中用户登录来完成Spring Security 的认证操作。
3. 用户管理
3.1 用户登录
spring-security.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd">
<!-- 配置不拦截的资源 -->
<security:http pattern="/login.jsp" security="none"/>
<security:http pattern="/failer.jsp" security="none"/>
<security:http pattern="/css/**" security="none"/>
<security:http pattern="/img/**" security="none"/>
<security:http pattern="/plugins/**" security="none"/>
<!--
配置具体的规则
auto-config="true" 不用自己编写登录的页面，框架提供默认登录页面
use-expressions="false" 是否使用SPEL表达式（没学习过）
-->
<security:http auto-config="true" use-expressions="true">
<!-- 配置具体的拦截的规则 pattern="请求路径的规则" access="访问系统的人，必须有ROLE_USER的角色" -->
<security:intercept-url pattern="/**" access="hasAnyRole('ROLE_USER','ROLE_ADMIN')"/>
<!-- 定义跳转的具体的页面 -->
<security:form-login
login-page="/login.jsp"
login-processing-url="/login.do"
default-target-url="/index.jsp"
authentication-failure-url="/failer.jsp"
authentication-success-forward-url="/pages/main.jsp"
/>
<!-- 关闭跨域请求 -->
<security:csrf disabled="true"/>
<!-- 退出 -->
<security:logout invalidate-session="true" logout-url="/logout.do" logout-success-url="/login.jsp" />
</security:http>
<!-- 切换成数据库中的用户名和密码 -->
<security:authentication-manager>
<security:authentication-provider user-service-ref="userService">
<!-- 配置加密的方式
<security:password-encoder ref="passwordEncoder"/>-->
<security:password-encoder ref="passwordEncoder"/>
</security:authentication-provider>
</security:authentication-manager>
<!-- 配置加密类 -->
<bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>
<!-- 提供了入门的方式，在内存中存入用户名和密码
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="admin" password="{noop}admin" authorities="ROLE_USER"/>
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
-->
<security:global-method-security pre-post-annotations="enabled" jsr250-annotations="enabled" secured-annotations="enabled"></security:global-method-security>
</beans>
导入依赖
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>${spring.security.version}</version>
</dependency>
配置web.xml
<!-- 配置加载类路径的配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext.xml,classpath*:spring-security.xml</param-value>
</context-param>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
3.1.1. 登录页面 login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>数据 - AdminLTE2定制版 | Log in</title>
<meta
content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"
name="viewport">
<link rel="stylesheet"
href="${pageContext.request.contextPath}/plugins/bootstrap/css/bootstrap.min.css">
<link rel="stylesheet"
href="${pageContext.request.contextPath}/plugins/font-awesome/css/font-awesome.min.css">
<link rel="stylesheet"
href="${pageContext.request.contextPath}/plugins/ionicons/css/ionicons.min.css">
<link rel="stylesheet"
href="${pageContext.request.contextPath}/plugins/adminLTE/css/AdminLTE.css">
<link rel="stylesheet"
href="${pageContext.request.contextPath}/plugins/iCheck/square/blue.css">
</head>
<body class="hold-transition login-page">
<div class="login-box">
<div class="login-logo">
<a href="all-admin-index.html"><b>ITCAST</b>后台管理系统</a>
</div>
<!-- /.login-logo -->
<div class="login-box-body">
<p class="login-box-msg">登录系统</p>
<form action="${pageContext.request.contextPath}/login.do" method="post">
<div class="form-group has-feedback">
<input type="text" name="username" class="form-control"
placeholder="用户名"> <span
class="glyphicon glyphicon-envelope form-control-feedback"></span>
</div>
<div class="form-group has-feedback">
<input type="password" name="password" class="form-control"
placeholder="密码"> <span
class="glyphicon glyphicon-lock form-control-feedback"></span>
</div>
<div class="row">
<div class="col-xs-8">
<div class="checkbox icheck">
<label><input type="checkbox"> 记住 下次自动登录</label>
</div>
</div>
<!-- /.col -->
<div class="col-xs-4">
<button type="submit" class="btn btn-primary btn-block btn-flat">登录</button>
</div>
<!-- /.col -->
</div>
</form>
<a href="#">忘记密码</a><br>
</div>
<!-- /.login-box-body -->
</div>
<!-- /.login-box -->
<!-- jQuery 2.2.3 -->
<!-- Bootstrap 3.3.6 -->
<!-- iCheck -->
<script
src="${pageContext.request.contextPath}/plugins/jQuery/jquery-2.2.3.min.js"></script>
<script
src="${pageContext.request.contextPath}/plugins/bootstrap/js/bootstrap.min.js"></script>
<script
src="${pageContext.request.contextPath}/plugins/iCheck/icheck.min.js"></script>
<script>
$(function() {
$('input').iCheck({
checkboxClass : 'icheckbox_square-blue',
radioClass : 'iradio_square-blue',
increaseArea : '20%' // optional
});
});
</script>
</body>
</html>UserInfo
package com.itheima.ssm.domain;
import java.util.List;
//与数据库中users对应
public class UserInfo {
private String id;
private String username;
private String email;
private String password;
private String phoneNum;
private int status;
private String statusStr;
private List<Role> roles;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPhoneNum() {
return phoneNum;
}
public void setPhoneNum(String phoneNum) {
this.phoneNum = phoneNum;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public String getStatusStr() {
//状态0 未开启 1 开启
if (status == 0) {
statusStr = "未开启";
} else if (status == 1) {
statusStr = "开启";
}
return statusStr;
}
public void setStatusStr(String statusStr) {
this.statusStr = statusStr;
}
public List<Role> getRoles() {
return roles;
}
public void setRoles(List<Role> roles) {
this.roles = roles;
}
}
3.1.2.UserServiceImpl
public interface IUserService extends UserDetailsService{
}
package com.itheima.ssm.service.impl;
@Service("userService")
@Transactional
public class UserServiceImpl implements IUserService {
@Autowired
private IUserDao userDao;
@Autowired
private BCryptPasswordEncoder bCryptPasswordEncoder;
@Override
public UserInfo findById(String id) throws Exception {
return userDao.findById(id);
}
@Override
public void addRoleToUser(String userId, String[] roleIds) throws Exception {
for(String roleId:roleIds){
userDao.addRoleToUser(userId,roleId);
}
}
@Override
public List<Role> findOtherRoles(String userid) throws Exception {
return userDao.findOtherRoles(userid);
}
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
System.out.println(username);
UserInfo userInfo = null;
try {
userInfo = userDao.findByUsername(username);
// System.out.println(username);
// System.out.println(userInfo.toString());
} catch (Exception e) {
e.printStackTrace();
}
//处理自己的用户对象封装成UserDetails
User user = new User(userInfo.getUsername(), userInfo.getPassword(), userInfo.getStatus() == 0 ? false : true, true, true, true, getAuthority(userInfo.getRoles()));
return user;
}
//作用就是返回一个List集合，集合中装入的是角色描述
public List<SimpleGrantedAuthority> getAuthority(List<Role> roles) {
List<SimpleGrantedAuthority> list = new ArrayList<>();
for (Role role : roles) {
list.add(new SimpleGrantedAuthority("ROLE_" + role.getRoleName()));
}
return list;
}
@Override
public List<UserInfo> findAll() throws Exception{
//userDao.findAll();
return userDao.findAll();
}
@Override
public void save(UserInfo userInfo)throws Exception {
userInfo.setPassword(bCryptPasswordEncoder.encode(userInfo.getPassword()));
userDao.save(userInfo);
}
}
3.1.3.IUserDao
public interface IUserDao {
@Select("select * from user where id=#{id}")
public UserInfo findById(Long id) throws Exception;
@Select("select * from user where username=#{username}")
@Results({
@Result(id = true, property = "id", column = "id"),
@Result(column = "username", property = "username"),
@Result(column = "email", property = "email"),
@Result(column = "password", property = "password"),
@Result(column = "phoneNum", property = "phoneNum"),
@Result(column = "status", property = "status"),
@Result(column = "id", property = "roles", javaType = List.class, many =
@Many(select = "com.itheima.ssm.dao.IRoleDao.findRoleByUserId")) })
public UserInfo findByUsername(String username);
}IRoleDao
public interface IRoleDao {
//根据用户id查询出所有对应的角色
@Select("select * from role where id in (select roleId from users_role where userId=#{userId})")
public List<Role> findRoleByUserId(String userId) throws Exception;
}
3.2 用户退出
使用 spring security 完成用户退出，非常简单
配置
<security:logout invalidate-session="true" logout-url="/logout.do" logout-successurl="/login.jsp" />在header.jsp修改
<a href="${pageContext.request.contextPath}/logout.do"
class="btn btn-default btn-flat">注销</a>
