基于SpringBoot的SSM整合案例

项目目录:

数据库表以及表结构

user表结构

user_info表结构

引入依赖

父模块依赖:

<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.2.12.RELEASE</version></parent>

<properties>中的版本管理

<!--mybatis版本--><mybatis.spring.version>2.2.2</mybatis.spring.version><!--Druid版本--><druid.version>1.2.11</druid.version><!--mysql版本--><mysql.version>5.1.38</mysql.version>

<dependences>依赖:

<!--应用程序的web起步依赖,包含了构建web应用程序所需的基本组件和依赖--><!--使用该依赖可以快速启动一个基于SpringMVC的应用程序--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--添加测试依赖,该依赖用于在SpringBoot应用程序中进行单元测试和继承测试--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>${mybatis.spring.version}</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><version>${druid.version}</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency>

添加配置文件

application.xml

spring:profiles:active: dev
server:port: 8088servlet:context-path: /ssm
mybatis:config-location: classpath:mybatis/mybatis-config.xmlmapper-locations: classpath:mybatis/**/*Mapper.xml

application-dev.xml

# 数据源配置
spring:datasource:type: com.alibaba.druid.pool.DruidDataSourcedriverClassName: com.mysql.jdbc.Driverurl: jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf-8&useSSL=falseusername: rootpassword: rootdruid:# 初始连接数initialSize: 5# 最小连接池数量minIdle: 10# 最大连接池数量maxActive: 20# 配置获取连接等待超时的时间maxWait: 60000# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒timeBetweenEvictionRunsMillis: 60000# 配置一个连接在池中最小生存的时间，单位是毫秒minEvictableIdleTimeMillis: 300000# 配置一个连接在池中最大生存的时间，单位是毫秒maxEvictableIdleTimeMillis: 900000# 配置检测连接是否有效validationQuery: SELECT 1 FROM DUALtestWhileIdle: truetestOnBorrow: falsetestOnReturn: falsewebStatFilter:enabled: truestatViewServlet:enabled: true# 设置白名单，不填则允许所有访问allow:# 指定访问druid监控页面的请求映射路径# 开发中一般通过：服务器映射路径/druid/index,来访问监控页面url-pattern: /druid/*# 监控默认是可以直接访问的# 如果有以下配置，那么访问监控页面时会跳转到，控制台管理页面进行登录控制# 控制台管理用户名和密码login-username: druidlogin-password: druidfilter:stat:enabled: true# 慢SQL记录（控制慢查询sql语句显示为红色提醒）log-slow-sql: trueslow-sql-millis: 1000merge-sql: truewall:config:multi-statement-allow: true

全局配置文件mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration><settings><setting name="logImpl" value="STDOUT_LOGGING"/></settings>
</configuration>

MybatisConfig配置类(用于扫描mapper接口包)

@Configuration
@MapperScan("com.yaorange.mapper")
public class MyBatisConfig {
}

公共类包

返回结果以及常量

public interface CommonConstant {/*** {@code 500 Server Error} (HTTP/1.0 - RFC 1945)*/Integer SC_INTERNAL_SERVER_ERROR_500 = 500;/*** {@code 200 OK} (HTTP/1.0 - RFC 1945)*/Integer SC_OK_200 = 2000;String ERROR_MSG = "操作失败";String OK_MSG = "操作成功";String LOGIN_ERROR_MSG = "用户名或密码错误";
}

@Data
public class PageInfo<T> {/*** 当前页*/private int pageNum;/*** 每页的数量*/private int pageSize;/*** 总记录数*/protected long total;/*** 结果集*/protected List<T> list;/*** 总页数*/private int pages;
}

数据层

entity实体类

@Data
public class User implements Serializable {/*** 用户Id*/private Integer userId;/*** 用户名*/private String userName;/*** 用户状态*/private Integer userState;/*** 用户详情id*/private UserInfo userInfo;private static final long serialVersionUID = 1L;
}

@Data
public class UserInfo implements Serializable {/*** 用户详情id*/private Integer infoId;/*** 家庭住址*/private String address;private static final long serialVersionUID = 1L;
}

mapper接口

public interface UserMapper {/**查询用户列表*/List<User> selectList();/**查询总记录数*/int countTotal();/**分页查询数据*/List<User> selectPage(@Param("start") int start,@Param("pageSize") Integer pageSize);/**通过Id查询用户信息*/User selectUserById(Integer userId);/**添加用户信息*/int insert(User user);/**批量删除用户*/int deleteUsers(Integer[] ids);
}

mapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yaorange.mapper.UserMapper"><resultMap id="BaseResultMap" type="com.yaorange.entity.User"><id property="userId" column="user_id" jdbcType="INTEGER"/><result property="userName" column="user_name" jdbcType="VARCHAR"/><result property="userState" column="user_state" jdbcType="VARCHAR"/></resultMap><resultMap id="User_UserInfo" type="com.yaorange.entity.User" extends="BaseResultMap"><association property="userInfo" javaType="com.yaorange.entity.UserInfo"><id property="infoId" column="user_info_id" jdbcType="INTEGER"/><result property="address" column="address" jdbcType="VARCHAR"/></association></resultMap><sql id="Base_Column_List">user_id,user_name,user_state,user_info_id</sql><insert id="insert" parameterType="com.yaorange.entity.User">INSERT INTO `ssm`.`user`( `user_name`, `user_state`, `user_info_id`)VALUES ( #{userName}, #{userState}, #{userInfo.infoId});</insert><delete id="deleteUsers">update user set user.user_state=1<where>user_id in<foreach collection="array" separator="," open="(" close=")" item="e">#{e}</foreach></where></delete><select id="selectList" resultMap="User_UserInfo">SELECTu.user_id,u.user_name,u.user_state,u.user_info_id,i.addressFROMuser AS u left joinuser_info AS ion u.user_info_id=i.info_idwhere u.user_state=0</select><select id="countTotal" resultType="java.lang.Integer">select Count(*) from user where user_state=0</select><select id="selectPage" resultMap="User_UserInfo">SELECTu.user_id,u.user_name,u.user_state,u.user_info_id,i.addressFROMuser AS u left joinuser_info AS ion u.user_info_id=i.info_idwhere u.user_state=0limit #{start},#{pageSize}</select><select id="selectUserById" resultMap="User_UserInfo">SELECTu.user_id,u.user_name,u.user_state,u.user_info_id,i.addressFROMuser AS u left joinuser_info AS ion u.user_info_id=i.info_idwhere u.user_state=0and u.user_id=#{userId}</select></mapper>

业务层

业务层接口

public interface UserService {/**查询用户列表数据*/List<User> selectList();/**分页查询用户数据*/PageInfo<User> page(Integer pageNum, Integer pageSize);User selectUserById(Integer userId);int insertUser(User user);int deleteUsers(Integer[] ids);
}

业务层实现类

@Service
@Transactional(rollbackFor = Exception.class)
public class UserServiceImpl implements UserService {@Autowiredprivate UserMapper userMapper;@Overridepublic List<User> selectList() {return userMapper.selectList();}@Overridepublic PageInfo<User> page(Integer pageNum, Integer pageSize) {//查询总条数int total=userMapper.countTotal();//总页数int pages=total%pageSize==0?total/pageSize:total/pageSize+1;//起始页int start=(pageNum-1)*pageSize;List<User> userList=userMapper.selectPage(start,pageSize);PageInfo<User> userPageInfo = new PageInfo<>();userPageInfo.setPageNum(pageNum);userPageInfo.setPageSize(pageSize);userPageInfo.setTotal(total);userPageInfo.setList(userList);userPageInfo.setPages(pages);return userPageInfo;}@Overridepublic User selectUserById(Integer userId) {return userMapper.selectUserById(userId);}@Overridepublic int insertUser(User user) {return userMapper.insert(user);}@Overridepublic int deleteUsers(Integer[] ids) {return userMapper.deleteUsers(ids);}}

控制层

@Controller
@ResponseBody
@RequestMapping("/user")
public class UserController {@Autowiredprivate UserService userService;@RequestMapping(value="/list",method = RequestMethod.GET)public Result<?> list(){List<User> userList =userService.selectList();return Result.ok(userList);}@RequestMapping(value = "/page",method = RequestMethod.GET)public Result<?> page(@RequestParam(defaultValue = "1") Integer pageNum,@RequestParam(defaultValue = "3") Integer pageSize){PageInfo<User> userPageInfo=userService.page(pageNum,pageSize);return Result.ok(userPageInfo);}@RequestMapping(method = RequestMethod.GET)public Result<?> selectUserById(@RequestParam Integer userId){User user=userService.selectUserById(userId);return Result.ok(user);}@RequestMapping(value="/add",method = RequestMethod.POST)public Result<?> addUser(@RequestBody  User user){int row=userService.insertUser(user);if(row>0){return Result.ok(CommonConstant.OK_MSG);}return Result.error(CommonConstant.ERROR_MSG);}@RequestMapping(value="/batchDelete",method=RequestMethod.POST)public Result<?> deleteUsers(@RequestBody Integer ids[]){int rows=userService.deleteUsers(ids);if(rows>0){return Result.ok(CommonConstant.OK_MSG);}return Result.error(CommonConstant.ERROR_MSG);}
}

数据层测试代码

@RunWith(SpringRunner.class)
@SpringBootTest
public class UserServiceImplTest {@Autowiredprivate UserService userService;@Testpublic void selectList() {List<User> users = userService.selectList();users.stream().forEach(System.out::println);}@Testpublic void page() {PageInfo<User> pageList = userService.page(1, 10);System.out.println(pageList);}@Testpublic void selectUserById() {User user = userService.selectUserById(2);System.out.println(user);}@Testpublic void insertUser() {User user = new User();user.setUserName("陈六");user.setUserState(1);UserInfo userInfo = new UserInfo();userInfo.setInfoId(2);user.setUserInfo(userInfo);int i = userService.insertUser(user);System.out.println(i);}@Testpublic void deleteUsers() {Integer[] ids={1,5};int i = userService.deleteUsers(ids);System.out.println(i);}
}

Postman测试结果

批量删除

查询用户列表

根据id查用户

添加用户