我正在尝试使用支持客户端和作业的Spring Boot构建REST API。客户端可以有很多作业,并且作业属于客户端。然而,当我保存或者由CLIENT_ID或试图找到客户端对象的引用给客户一个工作,我得到这个错误:在Spring Boot中通过POST为创建实体创建引用
{
"timestamp" : 1479163164739,
"status" : 400,
"error" : "Bad Request",
"exception" : "org.springframework.http.converter.HttpMessageNotReadableException",
"message" : "Could not read document: Can not construct instance of com.core.model.Client: no String-argument constructor/factory method to deserialize from String value ('3')\n at [Source: [email protected]; line: 1, column: 12] (through reference chain: com.core.model.Job[\"client\"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of com.core.model.Client: no String-argument constructor/factory method to deserialize from String value ('3')\n at [Source: [email protected]; line: 1, column: 12] (through reference chain: com.core.model.Job[\"client\"])",
"path" : "/api/v1/jobs"
}
包括我的模型和控制器的工作和客户端:
我的工作模式:
package com.core.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.CascadeType;
import javax.persistence.Table;
import javax.persistence.Column;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Id;
@Entity
@Table(name="`job`")
public class Job {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="job_id")
private Long jobId;
@ManyToOne(cascade=CascadeType.ALL, targetEntity = Client.class)
@JoinColumn(name = "client_id", nullable = false)
private Client client;
private String address1;
private String address2;
private String city;
private String county;
private String state;
private String zip;
private String country;
private String description;
//Note: I tried Long client_id instead of using the Client object here and same thing
public Job(String description, String address1, String address2, String city, String county,
String state, String zip, String country, Client client) {
this.setDescription(description);
this.setAddress1(address1);
this.setAddress2(address2);
...
this.setClient(client);
}
public Job() {}
public Long getId() { return jobId; }
public void setId(Long id) { this.jobId = id; }
...
public Client getClient() { return client; }
public void setClient(Client client) { this.client = client; }
}
控制器的工作:
package com.core.controller;
import com.core.model.Job;
import com.core.repository.JobRepository;
import org.apache.catalina.connector.Response;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import com.core.repository.JobRepository;
import org.springframework.hateoas.Resource;
import java.util.Collection;
import java.util.List;
@RestController
@RequestMapping("/api/v1/jobs")
public class JobController {
@Autowired
private JobRepository repository;
@RequestMapping(method = RequestMethod.GET)
public ResponseEntity<Collection<Job>> getAllJob(){
return new ResponseEntity<>((Collection<Job>) repository.findAll(), HttpStatus.OK);
}
@RequestMapping(method = RequestMethod.GET, value = "/{id}")
public ResponseEntity<Job> getEquipmentWithId(@PathVariable Long id) {
return new ResponseEntity<>(repository.findOne(id),HttpStatus.OK);
}
@RequestMapping(value="", method=RequestMethod.POST)
public ResponseEntity createNew(@RequestBody Job job) {
repository.save(job);
return new ResponseEntity(job, HttpStatus.CREATED);
}
}
和客户端型号:
package com.core.model;
import javax.persistence.Entity;
import javax.persistence.Access;
import javax.persistence.AccessType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Table;
import javax.persistence.Column;
import javax.persistence.JoinColumn;
import javax.persistence.Id;
import javax.persistence.OneToMany;
@Entity
@Table(name="`client`")
public class Client {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="client_id")
@Access(AccessType.PROPERTY)
private Long clientId;
public Client(String description) {
this.setDescription(description);
}
public Client() {}
public Long getClientId() {
return clientId;
}
public void setClientId(Long id) { this.clientId = id; }
...
}
我只是想将该客户端ID保存到工作中,这里有什么正确的方法?
你能证明你的要求 – kuhajeyan