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

  <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <scope>runtime</scope>
    </dependency> 

spring:
 datasource:
  driver-class-name: com.mysql.jdbc.Driver
  url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&characterSetResults=utf8
  username: root
  password: 123456

 jpa:
  hibernate:
   ddl-auto: update # 第一次簡(jiǎn)表create 后面用update
  show-sql: true

@Entity
public class Account {
  @Id
  @GeneratedValue
  private int id ;
  private String name ;
  private double money;

... 省略getter setter
}

public interface AccountDao extends JpaRepository<Account,Integer> {
}

@RestController
@RequestMapping("/account")
public class AccountController {

  @Autowired
  AccountDao accountDao;

  @RequestMapping(value = "/list", method = RequestMethod.GET)
  public List<Account> getAccounts() {
    return accountDao.findAll();
  }

  @RequestMapping(value = "/{id}", method = RequestMethod.GET)
  public Account getAccountById(@PathVariable("id") int id) {
    return accountDao.findOne(id);
  }

  @RequestMapping(value = "/{id}", method = RequestMethod.PUT)
  public String updateAccount(@PathVariable("id") int id, @RequestParam(value = "name", required = true) String name,
                @RequestParam(value = "money", required = true) double money) {
    Account account = new Account();
    account.setMoney(money);
    account.setName(name);
    account.setId(id);
    Account account1 = accountDao.saveAndFlush(account);

    return account1.toString();

  }

  @RequestMapping(value = "", method = RequestMethod.POST)
  public String postAccount(@RequestParam(value = "name") String name,
               @RequestParam(value = "money") double money) {
    Account account = new Account();
    account.setMoney(money);
    account.setName(name);
    Account account1 = accountDao.save(account);
    return account1.toString();

  }


}