<!-- 添加Spring-data-jpa依赖. -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-data-jpa</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-jdbc</artifactId>        </dependency>

spring.datasource.url = jdbc:mysql://localhost:3306/AppleforWindows_test1?characterEncoding=utf8&useSSL=true说明：5.7的mysql必须加入：characterEncoding=utf8&useSSL=truespring.datasource.username = rootspring.datasource.password = AppleforWindowsspring.datasource.driverClassName = com.mysql.jdbc.Driverspring.datasource.max-active=20spring.datasource.max-idle=8spring.datasource.min-idle=8spring.datasource.initial-size=10自动在数据库创建table表spring.jpa.database = MYSQL# Show or not log for each sql queryspring.jpa.show-sql = true# Hibernate ddl auto (create, create-drop, update)spring.jpa.hibernate.ddl-auto = update# Naming strategy#[org.hibernate.cfg.ImprovedNamingStrategy  #org.hibernate.cfg.DefaultNamingStrategy]spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy# stripped before adding them to the entity manager)spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

package com.ld.bean;import java.util.Date;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.GenerationType;import javax.persistence.Id;import com.alibaba.fastjson.annotation.JSONField;/*创建了一个实体类。* * 如何持久化呢？* * 1、使用@Entity进行实体类的持久化操作，当JPA检测到我们的实体类当中有* * @Entity 注解的时候，会在数据库中生成对应的表结构信息。* * * 如何指定主键以及主键的生成策略？* * 2、使用@Id指定主键.*/@Entitypublic class SysUser {        /*设置为主键*/    @Id @GeneratedValue(strategy=GenerationType.AUTO)    private Long id;    private String name;    private String phone;    private String mail;    @JSONField(format="yyyy-MM-dd HH:mm")    private Date createTime;    private String remark;    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getPhone() {        return phone;    }    public void setPhone(String phone) {        this.phone = phone;    }    public String getMail() {        return mail;    }    public void setMail(String mail) {        this.mail = mail;    }    public Date getCreateTime() {        return createTime;    }    public void setCreateTime(Date createTime) {        this.createTime = createTime;    }    public String getRemark() {        return remark;    }    public void setRemark(String remark) {        this.remark = remark;    }    }

package com.ld.service;import javax.annotation.Resource;import javax.transaction.Transactional;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Service;import com.ld.bean.SysUser;import com.ld.repository.SysUserRepository;@Service("sysUserService")public class SysUserService {    static final Logger logger = LoggerFactory.getLogger(SysUserService.class);    @Resource    private SysUserRepository sysUserRepository;    public Iterable<SysUser> findAll() {        logger.info("=>：findAll");        return sysUserRepository.findAll();    }    public SysUser findOne(Integer id) {        logger.info("=>：findOne");        return sysUserRepository.findOne(id);    }        @Transactional    public SysUser save(SysUser sysUser) {        logger.info("=>：save");        return sysUserRepository.save(sysUser);    }    public long count() {        logger.info("=>：count");        return sysUserRepository.count();    }    @Transactional    public void delete(Integer id) {        logger.info("=>：delete");        sysUserRepository.delete(id);    }}

package com.ld.controller;import java.util.Date;import javax.annotation.Resource;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.servlet.ModelAndView;import com.ld.bean.SysUser;import com.ld.service.SysUserService;import com.ld.util.CommonTool;@RestController@RequestMapping("sysUserWeb")public class SysUserWeb {    @Resource    private  SysUserService sysUserService;    @RequestMapping("/index")    public ModelAndView index(){        ModelAndView mv = new ModelAndView("redirect:AmazeUI/error.html");        return mv;    }    @RequestMapping("/getAll")    @ResponseBody    public Iterable<SysUser> getAll(){        return sysUserService.findAll();    }    @RequestMapping("/save")    @ResponseBody    public SysUser save(){        SysUser sysUser = new SysUser();        sysUser.setName(CommonTool.getRandomString(6));        sysUser.setPhone(CommonTool.getRandomPhone());        sysUser.setMail(CommonTool.getRandomMail());        sysUser.setCreateTime(new Date());        sysUserService.save(sysUser);        return sysUser;    }    @RequestMapping("/queryOne")    @ResponseBody    public SysUser queryOne(){        return sysUserService.findOne(1);    }}