原理
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SSM集成 = Spring+SpringMvc+Mybatis集成
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框架集成核心,如果你的项目中,用到了Spring框架,那么其他框架主要就是和Spring集成;
-
和Spring集成的核心思路:
-
把当前框架的核心类,交给Spring管理(IOC)
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如果框架有事务,那么事务也要统一交给Spring管理(AOP)
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步骤
1、根据项目业务创建数据库和表格
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for `account_info`
-- ----------------------------
DROP TABLE IF EXISTS `account_info`;
CREATE TABLE `account_info` (
`account` varchar(11) COLLATE utf8mb4_general_ci NOT NULL COMMENT '用户账号,主键',
`acc_name` varchar(50) COLLATE utf8mb4_general_ci NOT NULL COMMENT '用户姓名',
`password` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '鐢ㄦ埛瀵嗙爜锛岄粯璁ゆ墜鏈哄彿鍚?浣?',
`acc_phone` varchar(11) COLLATE utf8mb4_general_ci NOT NULL COMMENT '手机号11位,唯一',
`is_enable` tinyint(1) NOT NULL COMMENT '是否启用(1:启用,0:未启用)',
`create_time` datetime NOT NULL COMMENT '创建时间',
`update_time` datetime NOT NULL COMMENT '更新时间',
PRIMARY KEY (`account`),
UNIQUE KEY `uk_phone` (`acc_phone`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
-- ----------------------------
-- Records of account_info
-- ----------------------------
INSERT INTO `account_info` VALUES ('YZ0001', 'admin', '92159b1631dae48aa523875174e3ea60', '13811345670', '1', '2023-08-18 11:34:28', '2023-08-18 11:34:28');
INSERT INTO `account_info` VALUES ('YZ0002', 'admin', '986fa807bbe0c721702868bae6ef8a33', '13811345679', '1', '2023-08-18 11:34:38', '2023-08-18 11:34:38');
INSERT INTO `account_info` VALUES ('YZ0003', 'admin2', '7d839f278639a38b2ba83ad67ab836a2', '13811345677', '1', '2023-08-18 14:46:05', '2023-08-18 14:46:05');
INSERT INTO `account_info` VALUES ('YZ0004', 'admin2', '35ea60fd301a3895245aff0ca4947d9e', '13811345674', '1', '2023-08-18 15:03:12', '2023-08-18 15:03:12');
2、搭建一个maven项目
3、导入坐标依赖
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.3.8</version>
</dependency>
<!-- servlet依赖-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- json 相关-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.0</version>
</dependency>
<!-- mysql驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.33</version>
</dependency>
<!-- 连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.4</version>
</dependency>
<!-- spring整合jdbc相关坐标-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.8</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- mybatis整合spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
</dependency>
4、编写实体类
package com.cqh.entity;
import lombok.Data;
import java.io.Serializable;
import java.util.Date;
@Data
public class AccountInfo implements Serializable {
private static final long serialVersionUID = 1L;
/**
* 用户账号,主键
*/
private String account;
/**
* 用户姓名
*/
private String accName;
/**
* 用户密码
*/
private String password;
/**
* 手机号11位,唯一
*/
private String accPhone;
/**
* 是否启用(1:启用,0:未启用)
*/
private Boolean isEnable;
/**
* 创建时间
*/
private Date createTime;
/**
* 更新时间
*/
private Date updateTime;
}
5、编写mapper接口
package com.cqh.mapper;
import com.cqh.entity.AccountInfo;
import org.apache.ibatis.annotations.Select;
import java.util.List;
public interface AccountInfoMapper {
@Select("select * from account_info")
List<AccountInfo> selectAll();
}
6、编写service接口和实现类
package com.cqh.service;
import com.cqh.entity.AccountInfo;
import java.util.List;
public interface AccountInfoService {
List<AccountInfo> getAll();
}
package com.cqh.service.impl;
import com.cqh.entity.AccountInfo;
import com.cqh.mapper.AccountInfoMapper;
import com.cqh.service.AccountInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class AccountInfoServiceImpl implements AccountInfoService {
@Autowired
private AccountInfoMapper accountInfoMapper;
public List<AccountInfo> getAll() {
return accountInfoMapper.selectAll();
}
}
7、编写控制器
package com.cqh.controller;
import com.cqh.entity.AccountInfo;
import com.cqh.service.AccountInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("/accountInfo")
public class AccountInfoController {
@Autowired
private AccountInfoService accountInfoService;
@GetMapping("/getAll")
public List<AccountInfo> getAll(){
return accountInfoService.getAll();
}
}
使用注解方式搭建SSM
1、创建Web项目入口配置类替换web.xml
package com.cqh.config;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import javax.servlet.Filter;
public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
//加载spring配置类
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[]{SpringConfig.class};
}
//加载springmvc配置类
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class[]{SpringMvcConfig.class};
}
//指定spring要管哪些地址
//设置SpringMVC请求地址拦截规则
/*
/所有地址
*/
@Override
protected String[] getServletMappings() {
return new String[]{"/"};
}
//设置post请求中文乱码过滤器
@Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter filter = new CharacterEncodingFilter();
filter.setEncoding("utf-8");
return new Filter[]{filter};
}
}
2、创建SpringMVC配置类替换springmvc.xml
package com.cqh.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
//表明这是配置类
@Configuration
//开启包扫描
@ComponentScan("com.cqh.controller")
//开启mvc注解驱动
@EnableWebMvc
public class SpringMvcConfig {
}
3、创建SpringConfig配置类替换applicationContext.xml
package com.cqh.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.transaction.annotation.EnableTransactionManagement;
//表明这是配置类
@Configuration
//开启包扫描
@ComponentScan("com.cqh.service")
//开启事务平台管理器
@EnableTransactionManagement
//引入数据库配置类
@Import({MybatisConfig.class,JdbcConfig.class})
public class SpringConfig {
}
4、创建JdbcConfig配置类
package com.cqh.config;
import com.alibaba.druid.pool.DataSourceClosedException;
import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.PropertySource;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import javax.sql.DataSource;
//从resources下引入jdbc.properties
@PropertySource("classpath:jdbc.properties")
public class JdbcConfig {
@Value("${jdbc.driver}")
//把配置文件中的jdbc.driver对应的字符串值 附值给 被修饰前的变量
private String driver;
@Value("${jdbc.url}")
private String url;
@Value("${jdbc.username}")
private String username;
@Value("${jdbc.password}")
private String password;
//数据源
@Bean
public DataSource dataSource(){
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName(driver);
dataSource.setUrl(url);
dataSource.setUsername(username);
dataSource.setPassword(password);
return dataSource;
}
//平台事务管理器
@Bean
public PlatformTransactionManager transactionManager(DataSource dataSource){
//创建数据事务管理器
DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();
//设置事务源
dataSourceTransactionManager.setDataSource(dataSource);
return dataSourceTransactionManager;
}
}
5、创建MybatisConfig配置类
package com.cqh.config;
import org.apache.ibatis.session.Configuration;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;
import javax.sql.DataSource;
public class MybatisConfig {
@Bean
public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource){
SqlSessionFactoryBean factoryBean= new SqlSessionFactoryBean();
//设置数据源
factoryBean.setDataSource(dataSource);
//给实体类设置别名
factoryBean.setTypeAliasesPackage("com.cqh.entity");
//开启驼峰命名
Configuration configuration = new Configuration();
//下划线转驼峰
configuration.setMapUnderscoreToCamelCase(true);
factoryBean.setConfiguration(configuration);
return factoryBean;
}
@Bean
public MapperScannerConfigurer mapperScannerConfigurer(){
MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
//扫描mapper所在的包
mapperScannerConfigurer.setBasePackage( "com.cqh.mapper");
return mapperScannerConfigurer;
}
}
Xml方式
1、配置jdbc.properties
2、applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
">
<context:component-scan base-package="com.cqh.service"></context:component-scan>
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="ds" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value= "${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean id="sqlSessionFactory" class=" org.mybatis.spring.SqlSessionFactoryBean ">
<property name="dataSource" ref="ds" />
<property name="typeAliasesPackage" value="com.cqh.entity"/>
<property name="configuration">
<bean class="org.apache.ibatis.session.Configuration">
<property name="mapUnderscoreToCamelCase" value="true"/>
</bean>
</property>
</bean>
<bean class=" org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.cqh.mapper"/>
</bean>
</beans>
3、 spring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="com.cqh.controller"></context:component-scan>
<mvc:annotation-driven />
</beans>
4、web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--向核心控制器告知spring的配置文件在哪-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext*.xml</param-value>
</context-param>
<!--配置spring的监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<servlet-name>dispatcherServlet</servlet-name>
</filter-mapping>
</web-app>
测试效果