SpringBoot整合SSM

火影 · 4 天前

1. SSM整合步骤

今天带各人学习一下基于SpringBoot的SSM整合案例，话不多说，咱们开始，要实现SSM整合，有以下这么几步

导入依赖
创建yml配置文件
dao层
静态页面
测试类举行测试

1.1 导入依赖

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>boot</artifactId>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.3.4</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.33</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
<version>2.7.3</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-spring-boot3-starter</artifactId>
<version>3.5.7</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-3-starter</artifactId>
<version>1.2.23</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>3.3.5</version>
<scope>test </scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.26</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>

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1.2 application.yml配置文件整合mysql

# 启动端口号
server:
port: 8080
spring:
# 整合 mysql数据源连接池
datasource:
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql:///db1
username: root
password: 1234
type: com.alibaba.druid.pool.DruidDataSource

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1.3 写业务

pojo

package com.it.pojo;
import lombok.Data;
@Data
public class Dept {
private int id;
private String dname;
private String loc;
}

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mapper

package com.it.mapper;
import com.it.pojo.Dept;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
//动态扫描代理
@Mapper
public interface DeptMapper {
@Select("select * from dept where id=#{id}")
public Dept findById(int id);
}

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1.4 测试

package com.it.mapper;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class DeptMapperTest {
@Autowired
public DeptMapper deptMapper;
@Test
void findById() {
System.out.println(deptMapper.findById(1));
}
}

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1.5 service

package com.it.service;
import com.it.pojo.Dept;
public interface DeptService {
public Dept findById(int id);
}

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1.6 Impl层

package com.it.service.impl;
import com.it.mapper.DeptMapper;
import com.it.pojo.Dept;
import com.it.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class DeptServiceImpl implements DeptService {
@Autowired
public DeptMapper deptMapper;
@Override
public Dept findById(int id) {
return deptMapper.findById(id);
}
}

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1.7 controller层

package com.it.controller;
import com.it.pojo.Dept;
import com.it.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class DeptController {
@Autowired
private DeptService deptService;
// 一个方法就是一个servlet
@RequestMapping("/getList")
@ResponseBody
public Dept getList(int id){
Dept dept = deptService.findById(id);
System.out.println(dept);
return dept;
}
}

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1.9 查询数据

启动项目，进入端口查询数据

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