关于Spring Boot对jdbc的支持问题

项目结构

pom.xml

pom.xml：

<?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">
    <parent>
        <artifactId>spring-boot-02</artifactId>
        <groupId>com.keafmd</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>spring-boot-08</artifactId>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- 解析jsp类库  -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
        </dependency>

        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- JDBC-启动器, 默认的数据源 HikariCP -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <!-- JDBC-启动器, 默认的数据源 HikariCP -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

    </dependencies>

</project>

application.yml

server:
  port: 80

spring:
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/ssm-java1?useSSL=false
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    password: 18044229

启动类

package com.keafmd;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * Keafmd
 *
 * @ClassName: App08
 * @Description:
 * @author: 牛哄哄的柯南
 * @Date: 2021-04-08 11:48
 * @Blog: https://keafmd.blog.csdn.net/
 */


@SpringBootApplication
public class App08 {

    public static void main(String[] args) {
        SpringApplication.run(App08.class, args);
    }

}

Dao层

UserDao：

package com.keafmd.dao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * Keafmd
 *
 * @ClassName: UserDao
 * @Description:
 * @author: 牛哄哄的柯南
 * @Date: 2021-04-08 11:47
 * @Blog: https://keafmd.blog.csdn.net/
 */
@Repository
public class UserDao {

    @Autowired
    JdbcTemplate jdbcTemplate;

    public List userList(){
        String sql ="select * from user";
        return jdbcTemplate.queryForList(sql);

    }
}

Service层

IUserService ：

 

package com.keafmd.service;

import java.util.List;

/**
 * Keafmd
 *
 * @ClassName: IUserService
 * @Description:
 * @author: 牛哄哄的柯南
 * @Date: 2021-04-08 11:59
 * @Blog: https://keafmd.blog.csdn.net/
 */
public interface IUserService {

    List list();
}

UserServiceImpl：

package com.keafmd.service.impl;

import com.keafmd.dao.UserDao;
import com.keafmd.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * Keafmd
 *
 * @ClassName: UserServiceImpl
 * @Description:
 * @author: 牛哄哄的柯南
 * @Date: 2021-04-08 12:00
 * @Blog: https://keafmd.blog.csdn.net/
 */
@Service
public class UserServiceImpl implements IUserService {

    @Autowired
    UserDao userDao;

    @Override
    public List list() {
        return userDao.userList();
    }
}

Controller层

UserController：

package com.keafmd.controller;

import com.keafmd.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * Keafmd
 *
 * @ClassName: UserController
 * @Description:
 * @author: 牛哄哄的柯南
 * @Date: 2021-04-08 18:04
 * @Blog: https://keafmd.blog.csdn.net/
 */
@RestController
public class UserController {

    @Autowired
    IUserService userService;

    /**
     * http://127.0.0.1/userlist
     * @return
     */
    @RequestMapping("userlist")
    List UserList(){
        return userService.list();
    }
}

测试类测试

UserDaoTest：

 

package com.keafmd.dao;

import com.keafmd.App08;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import java.util.List;

import static org.junit.jupiter.api.Assertions.*;

@SpringBootTest(classes = App08.class)
class UserDaoTest {

    @Autowired
    UserDao userDao;

    @Test
    public void test(){
        List userlist = userDao.userList();
        for (Object o : userlist) {
            System.out.println(o);
        }
    }

}

运行test方法的效果：

运行启动类，测试效果

运行启动类，访问：http://127.0.0.1/userlist

到此这篇关于Spring Boot对jdbc的支持的文章就介绍到这了,更多相关Spring Boot支持jdbc内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家！

原文链接：https://blog.csdn.net/weixin_43883917/article/details/115511007