时间:2021-07-01 10:21:17 帮助过:11人阅读
2实体User.java
package pers.ly.entity; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity // This tells Hibernate to make a table out of this class public class User { @Id @GeneratedValue(strategy= GenerationType.AUTO) private Integer id; private String username; private String password; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; }
3JPA的dao层 UsersRespository.java
package pers.ly.dao; import org.springframework.data.repository.CrudRepository; import pers.ly.entity.User; import java.util.List; // This will be AUTO IMPLEMENTED by Spring into a Bean called userRepository // CRUD refers Create, Read, Update, Delete public interface UserRepository extends CrudRepository<User, Integer> { User findByUsername(String username); }
4控制层用来实现输出功能UserController.java
package pers.ly.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.*; import pers.ly.entity.User; import pers.ly.dao.UserRepository; import pers.ly.jsonify.jsondata; @Controller // This means that this class is a Controller @RequestMapping(path="/community") // This means URL‘s start with /demo (after Application path) public class UserController { @Autowired // This means to get the bean called userRepository // Which is auto-generated by Spring, we will use it to handle the data private UserRepository userRepository; String username,password; jsondata data =new jsondata(); @PostMapping(path = "/register") // Map ONLY POST Requests public @ResponseBody jsondata register( @RequestBody(required = false) User user) { data.setMsg("Saved"); username=user.getName(); password=user.getPassword(); User n = new User(); n.setUsername(username); n.setPassword(password); userRepository.save(n); return data; } @GetMapping(path = "/login") public @ResponseBody jsondata login(@RequestBody(required = false) User user) { username=user.getName(); password=user.getPassword(); User n=userRepository.findByUsername(username); if(n==null) data.setMsg("user is null"); else if(!n.getPassword().equals(password)) data.setMsg("password is wrong"); else data.setMsg("success"); return data; } }
5为了输出为json信息创建的json类jsondata.java
package pers.ly.jsonify; public class jsondata { private String msg; public void setMsg(String msg) { this.msg = msg; } public String getMsg() { return msg; } }
spring boot+jpa+mysql实现简单的登录注册
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