Postman使用实例

Postman使用实例 实体类Emp package com.example.springboot_postman.pojo; import com.fasterxml.jackson.annotation.JsonIgnoreProperties; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import javax.persistence.*; import java.io.Serializable; /** * @Author moon * @Date 2023/10/2 18:29 * @Description */ @Entity @Table(name = "t_emp") @Data @AllArgsConstructor @NoArgsConstructor @JsonIgnoreProperties(value = { "hibernateLazyInitializer"}) public class Emp implements Serializable { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "emp_id") private int id; @Column(name = "emp_name") private String name; @Column(name = "age") private int age; @Column(name = "gender") private String gender; @Column(name = "email") private String email; } JPA接口EmpDao package com.example.springboot_postman.dao; import com.example.springboot_postman.pojo.Emp; import org.springframework.data.jpa.repository.JpaRepository; /** * @Author moon * @Date 2023/10/2 18:43 * @Description */ public interface EmpDao extends JpaRepository<Emp, Integer> { } 1. 分页查询

EmpService:

public Page<Emp> queryByPage(Integer page, Integer size) { Pageable pageable = PageRequest.of(page, size,Sort.by(Sort.Direction.DESC, "id")); return empDao.findAll(pageable); }

EmpController

@RequestMapping("/getByPage") public ResponseEntity<Page<Emp>> queryByPage(@RequestBody Map<String, Integer> map) { System.out.println(map.get("page") + map.get("size")); return ResponseEntity.ok(this.EmpService.queryByPage(map.get("page"), map.get("size"))); }

2. 根据id查询

EmpService:

public Emp queryById(Integer id) { Emp emp = new Emp(); emp.setId(id); return empDao.getOne(emp.getId()); }

EmpController

@PostMapping public ResponseEntity<Emp> add(Emp Emp) { return ResponseEntity.ok(this.EmpService.insert(Emp)); }

3. 增

EmpService

public Emp insert(Emp emp) { empDao.save(emp); return emp; }

EmpController

@PostMapping public ResponseEntity<Emp> add(@RequestBody Emp Emp) { System.out.println(Emp); return ResponseEntity.ok(this.EmpService.insert(Emp)); }

4. 删

EmpService

public Boolean deleteById(Integer id) { Emp emp = new Emp(); emp.setId(id); empDao.deleteById(emp.getId()); return true; }

EmpController

@DeleteMapping("{id}") public ResponseEntity<Boolean> deleteById(@PathVariable Integer id) { return ResponseEntity.ok(this.EmpService.deleteById(id)); }

5. 改

EmpService

public Emp update(Emp emp) { empDao.save(emp); return emp; }

EmpController

@PutMapping public ResponseEntity<Emp> edit(@RequestBody Emp Emp) { return ResponseEntity.ok(this.EmpService.update(Emp)); }

其中分页管理也可以这样写

@GetMapping public ResponseEntity<Page<Emp>> queryByPage(@RequestBody Map<String, Integer> map) { return ResponseEntity.ok(this.EmpService.queryByPage(map.get("page"), map.get("size"))); }

GET请求这样传参数

package com.example.springboot_logback.web; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/test") public class TestController { // getLogger()的入参是当前类，否则输出日志的类名会是错误的 private final Logger logger = LoggerFactory.getLogger(TestController.class); @RequestMapping(value = "/test", method = RequestMethod.GET) public String logTest(String name, String age) { System.out.println(name + ":" + age); logger.info("logTest,name:{},age:{}", name, age); return "success"; } }

POST请求才用这个格式