Springboot（十）jpa

前言：

    springboot整合jpa

代码：

 application.yml

spring:
  datasource:
    username: xuhaixing
    password: xuhaixing
    url: jdbc:mysql://192.168.94.151:3306/mytest?useUnicode=true&characterEncoding=utf8&characterSetResults=utf8
    driver-class-name: com.mysql.jdbc.Driver
  jpa:
    hibernate:
      ddl-auto: update
    show-sql: true

Dao层：

package com.xhx.springboot.dao;

import com.xhx.springboot.entity.Account;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

/**
 * @author xuhaixing
 * @date 2018/5/2 11:19
 */
@Repository
public interface AccountDao extends JpaRepository<Account, Integer> {


}

Service层

package com.xhx.springboot.service.impl;

import com.xhx.springboot.dao.AccountDao;
import com.xhx.springboot.entity.Account;
import com.xhx.springboot.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author xuhaixing
 * @date 2018/5/2 9:53
 */
@Service
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    @Override
    public int add(Account account) {
        accountDao.save(account);
        return 1;
    }

    @Override
    public int update(Account account) {
        accountDao.save(account);  //插入和更新同一个方法，内部原理先根据id查一下，没有insert,有update
        return 1;
    }

    @Override
    public int delete(int id) {
        accountDao.deleteById(id);
        return 1;
    }

    @Override
    public Account findById(int id) {
        return accountDao.findById(id).get();

    }

    @Override
    public List<Account> findList() {
        return accountDao.findAll();
    }
}

Controller层：

package com.xhx.springboot.controller;

import com.xhx.springboot.entity.Account;
import com.xhx.springboot.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @author xuhaixing
 * @date 2018/5/2 9:55
 */
@RestController
@RequestMapping("account")
public class AccountController {

    @Autowired
    private AccountService accountService;

    @RequestMapping(value = "add", method = RequestMethod.POST)
    public int add(@RequestBody Account account) {
        return accountService.add(account);
    }

    @RequestMapping(value = "update", method = RequestMethod.POST)
    public int update0(@RequestBody Account account) {
        return accountService.update(account);
    }

    @RequestMapping(value = "delete", method = RequestMethod.POST)
    public int delete(@RequestParam int id) {
        return accountService.delete(id);
    }

    @RequestMapping(value = "findById", method = RequestMethod.POST)
    public Account findById(@RequestParam int id) {
        return accountService.findById(id);
    }

    @RequestMapping(value = "findList", method = RequestMethod.POST)
    public List<Account> findList() {
        return accountService.findList();
    }

}

entity实体类：

package com.xhx.springboot.entity;

import javax.persistence.Entity;
import javax.persistence.Id;

/**
 * @author xuhaixing
 * @date 2018/4/28 10:29
 */
@Entity
public class Account {
    @Id
    private int id;
    private String name;
    private Double money;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }
}

启动类：

package com.xhx.springboot;

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

@SpringBootApplication
public class Springboot5Application {

    public static void main(String[] args) {
        SpringApplication.run(Springboot5Application.class, args);
    }
}

运行结果：

我的github代码