IntelliJ IDEA Spring Boot
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Spring Boot
Spring Boot 是一个基于 Spring 的框架，旨在简化 Spring 应用的配置和开发过程，通过自动配置和约定大于配置的原则，使开发者能够快速搭建独立、生产级别的应用程序。
- Environment: IntelliJ IDEA 2023.1 (Ultimate Edition)
- Features: web, mysql
- Course:
- New project -> Spring Initializr -> type: maven: testSprintBoot
- Dependency -> Web: Spring Web，SQL: MyBatis Framework, MySQL Driver/H2 Database
- src/main/resources: application.properties -> application.yml
- src/main/resources/static: index.html
- com.example.testspringboot: bean, controller, mapper, service
application.yml
spring.application.name:
testSprintBoot
server:
port: 8083
spring:
datasource:
url: jdbc:mysql://192.168.0.83:3306/mysql?serverTimezone=Asia/Shanghai&characterEncoding=utf-8
username: root
password: 123456
driver-class-name: com.mysql.cj.jdbc.Driver
mybatis:
type-aliases-package: com.example.testspringboot.bean
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
This is a test web page.
</body>
</html>
TestSprintBootApplication
# main.java/com.example.testspringboot.TestspringbootApplication
package com.example.testspringboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class TestspringbootApplication {
public static void main(String[] args) {
SpringApplication.run(TestspringbootApplication.class, args);
}
}
bean
SysUser
package com.example.testsprintboot.bean;
import org.springframework.format.annotation.DateTimeFormat;
import java.time.LocalDateTime;
import java.util.Date;
public class SysUser {
private String host;
private String user;
private String passwordLastChanged;
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
public String getPasswordLastChanged() {
return passwordLastChanged;
}
public void setPasswordLastChanged(String passwordLastChanged) {
this.passwordLastChanged = passwordLastChanged;
}
}
mapper
SysUserMapper
package com.example.testsprintboot.mapper;
import com.example.testsprintboot.bean.SysUser;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import java.util.List;
@Mapper
public interface SysUserMapper {
@Select({
"select",
"host, user, date_format(password_last_changed, '%Y-%m-%d %H:%i:%s') password_last_changed",
"from user"
})
List<SysUser> selectAll();
}
service
SysUserService
package com.example.testsprintboot.service;
import com.example.testsprintboot.bean.SysUser;
import java.util.List;
public interface SysUserService {
public List<SysUser> selectAll();
}
# service: SysUserServiceImpl
package com.example.testsprintboot.service;
import com.example.testsprintboot.bean.SysUser;
import com.example.testsprintboot.mapper.SysUserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service("SysUserService")
public class SysUserServiceImpl implements SysUserService {
@Autowired
private SysUserMapper sysUserMapper;
@Override
public List<SysUser> selectAll() {
return sysUserMapper.selectAll();
}
}
controller
SysUserController
package com.example.testsprintboot.controller;
import com.example.testsprintboot.bean.SysUser;
import com.example.testsprintboot.service.SysUserService;
import com.example.testsprintboot.service.SysUserServiceImpl;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import jakarta.annotation.Resource;
import java.util.List;
@RestController
@RequestMapping("/sysuser")
public class SysUserController {
@Resource
private SysUserService sysUserService = new SysUserServiceImpl();
@RequestMapping(value = "/selectAll", method = RequestMethod.GET)
public List<SysUser> selectAll() {
List<SysUser> list = sysUserService.selectAll();
return list;
}
}
Test
http://127.0.0.1:8083/sysuser/selectAll
[{"host":"%","user":"root","passwordLastChanged":null},{"host":"localhost","user":"mysql.infoschema","passwordLastChanged":null},{"host":"localhost","user":"mysql.session","passwordLastChanged":null},{"host":"localhost","user":"mysql.sys","passwordLastChanged":null},{"host":"localhost","user":"root","passwordLastChanged":null}]