嗯哼，2018年7月18號特此記錄，使用java spring boot + jpa 開發後端，進行資料庫增刪改查（使用原生sql）進行。因為是第一次寫，僅僅是為了記錄，方便以後檢視，寫的不好還請見諒。

package com.jony.keer.repository;

import com.jony.keer.entity.PersonModel;
import com.jony.keer.entity.RegisterModel;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;

@Repository
public interface AccountRepository extends JpaRepository<RegisterModel, Long> {


    @Override
    RegisterModel save(RegisterModel s);


    /**
     * 自定義sql查詢（原生sql）
     * 查詢賬號是否已經存在
     */
    //根據手機號  賬號查找出相應賬號  1表示存在 >=1表示不存在
    @Query(value = "SELECT 1 FROM tab_register WHERE cellphone=?1 OR act=?1 ", nativeQuery = true)
    int getActIsExistByCellPhone(String cellphone);

    //新增一條（註冊）
    @Query(value = "INSERT IGNORE INTO tab_register (cellphone,psd) VALUES (?1, ?2)", nativeQuery = true)
    @Modifying
    int insertRegisterModelOne(String cellphone, String psd);

    //登入
    @Query(value = "SELECT * FROM tab_register WHERE  cellphone=?1 AND psd=?2 ", nativeQuery = true)
    RegisterModel loginAct(String act, String psd);

    //修改密碼
    @Query(value = "UPDATE tab_register SET psd=?2 WHERE id=?1", nativeQuery = true)
    @Modifying
    int upDateActPsdById(Integer id, String psd);

    //刪除賬號
    @Query(value = "DELETE FROM tab_register WHERE id=?1", nativeQuery = true)
    @Modifying
    int delAct(Integer id);

}

 下面是dao層（service）這裡面寫的是具體業務流程

package com.jony.keer.service;

import com.jony.keer.entity.CallBackBean;
import com.jony.keer.entity.RegisterModel;
import com.jony.keer.repository.AccountRepository;
import com.jony.keer.utils.MobileUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;


/**
 * 賬戶體系管理
 */
@Transactional
@Service
public class AccountService {

    @Autowired
    private AccountRepository accountRepository;

    /**
     * 根據賬號/手機號查詢，用來判斷該賬號/手機號是否已經被註冊過
     * 如果可以查到相關資訊，擇表示該賬號/手機號已經被註冊 否則反之
     */

    public int getActIsExist(String act){
        int success=-1;
        try {
            success=accountRepository.getActIsExistByCellPhone(act);
        }catch (Exception e){
            success=0;
        }
        return success;
    }

    /**
     * 插入資訊（註冊賬號）INSERT
     */

    public CallBackBean insertRegister(String cellphone,String psd){
        if (!MobileUtils.isMobileNO(cellphone)) {
            return new CallBackBean(false, "手機號不正確！");
        }
        int success = getActIsExist(cellphone);
        if (success == 1) {
            return new CallBackBean(false, "該手機號已經註冊，請前往登入。");
        }
        int i=0;
        try {
            i = accountRepository.insertRegisterModelOne(cellphone,psd);
        }catch (Exception e){
            i=0;
        }
        if (i > 0) {
            return new CallBackBean(true, "註冊成功！");
        } else {
            return new CallBackBean(false, "註冊失敗！");
        }
    }

    /**
     * 登入
     */

    public CallBackBean loginService(String cellphone,String psd){
        if (!MobileUtils.isMobileNO(cellphone)) {
            return new CallBackBean(false, "手機號不正確！");
        }
        if (cellphone.isEmpty()) {
            return new CallBackBean(false, "手機號不能為空");
        }
        if (psd.isEmpty()) {
            return new CallBackBean(false, "密碼不能為空");
        }
        RegisterModel registerModel;
        try {
            registerModel=accountRepository.loginAct(cellphone,psd);
        }catch (Exception e){
            registerModel=null;
        }
        if (registerModel==null){
            return new CallBackBean(false, "賬號/密碼不正確");
        }
        return new CallBackBean(false, "登入成功",registerModel);
    }

    /**
     * 修改密碼
     */
    public CallBackBean updateService(Integer id,String psd){
        if (id<=0) {
            return new CallBackBean(false, "賬號不存在");
        }
        if (psd.isEmpty()) {
            return new CallBackBean(false, "密碼不能為空");
        }
        int i=0;
        try {
            i=accountRepository.upDateActPsdById(id,psd);
        }catch (Exception e){
            i=0;
        }

        if (i<=0){
            return new CallBackBean(false, "修改失敗");
        }
        return new CallBackBean(true, "修改成功");
    }

    public CallBackBean deleteActService(Integer id){
        if (id<=0) {
            return new CallBackBean(false, "賬號不存在");
        }
        int i=0;
        try {
            i=accountRepository.delAct(id);
        }catch (Exception e){
            i=0;
        }
        if (i<=0){
            return new CallBackBean(false, "刪除失敗");
        }
        return new CallBackBean(true, "刪除成功");
    }
}

最後是 Controller

package com.jony.keer.controller;


import com.google.gson.Gson;
import com.jony.keer.entity.CallBackBean;
import com.jony.keer.entity.RegisterModel;
import com.jony.keer.service.AccountService;
import com.jony.keer.service.PersonService;
import com.jony.keer.utils.MobileUtils;
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.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

/**
 * Created by Song on 2017/2/15.
 * 賬戶管理介面類
 */
@Controller
@RequestMapping(value = "/account")
public class AccountController {
    @Autowired
    AccountService service;
    /**
     * 註冊
     * @param cellphone
     * @param psd
     * @return
     */
    @RequestMapping(value = "register", method = RequestMethod.POST)
    @ResponseBody
    public CallBackBean registerController(@RequestParam(value = "cellphone", required = true) String cellphone, @RequestParam(value = "psd", required = true) String psd) {
        return service.insertRegister(cellphone,psd);
    }
    /**
     * 登入
     * @param cellphone
     * @param psd
     * @return
     */
    @RequestMapping(value = "login", method = RequestMethod.POST)
    @ResponseBody
    public CallBackBean loginContorller(@RequestParam(value = "cellphone", required = true) String cellphone, @RequestParam(value = "psd", required = true) String psd) {
        return service.loginService(cellphone, psd);
    }
    /**
     * 修改密碼
     * @param id
     * @param psd
     * @return
     */
    @RequestMapping(value = "updatePsd", method = RequestMethod.POST)
    @ResponseBody
    public CallBackBean updateContorller(@RequestParam(value = "id", required = true) Integer id, @RequestParam(value = "psd", required = true) String psd) {
        return service.updateService(id, psd);
    }
    /**
     * 刪除賬號
     * @param id
     * @return
     */
    @RequestMapping(value = "deleteAct", method = RequestMethod.POST)
    @ResponseBody
    public CallBackBean deleteActContorller(@RequestParam(value = "id", required = true) Integer id) {
        return service.deleteActService(id);
    }

}