【发布时间】：2014-09-10 11:06:24
【问题描述】：
有一个奇怪的问题，不知道如何处理。 拥有简单的 POJO：
@Entity
@Table(name = "persons")
public class Person {
@Id
@GeneratedValue
private Long id;
@Column(name = "first_name")
private String firstName;
@Column(name = "middle_name")
private String middleName;
@Column(name = "last_name")
private String lastName;
@Column(name = "comment")
private String comment;
@Column(name = "created")
private Date created;
@Column(name = "updated")
private Date updated;
@PrePersist
protected void onCreate() {
created = new Date();
}
@PreUpdate
protected void onUpdate() {
updated = new Date();
}
@Valid
@OrderBy("id")
@OneToMany(mappedBy = "person", fetch = FetchType.EAGER, cascade = CascadeType.ALL, orphanRemoval = true)
private List<PhoneNumber> phoneNumbers = new ArrayList<>();
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getMiddleName() {
return middleName;
}
public void setMiddleName(String middleName) {
this.middleName = middleName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getComment() {
return comment;
}
public void setComment(String comment) {
this.comment = comment;
}
public Date getCreated() {
return created;
}
public Date getUpdated() {
return updated;
}
public List<PhoneNumber> getPhoneNumbers() {
return phoneNumbers;
}
public void addPhoneNumber(PhoneNumber number) {
number.setPerson(this);
phoneNumbers.add(number);
}
@Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
}
@Entity
@Table(name = "phone_numbers")
public class PhoneNumber {
public PhoneNumber() {}
public PhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
@Id
@GeneratedValue
private Long id;
@Column(name = "phone_number")
private String phoneNumber;
@ManyToOne
@JoinColumn(name = "person_id")
private Person person;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getPhoneNumber() {
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}
@Override
public String toString() {
return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
}
}
和休息端点：
@ResponseBody
@RequestMapping(method = RequestMethod.GET)
public List<Person> listPersons() {
return personService.findAll();
}
在 json 响应中，除了 Id 之外的所有字段，我需要在前端编辑/删除人员。如何配置 spring boot 来序列化 Id？
现在的响应是这样的：
[{
"firstName": "Just",
"middleName": "Test",
"lastName": "Name",
"comment": "Just a comment",
"created": 1405774380410,
"updated": null,
"phoneNumbers": [{
"phoneNumber": "74575754757"
}, {
"phoneNumber": "575757547"
}, {
"phoneNumber": "57547547547"
}]
}]
UPD 有双向休眠映射，可能与问题有关。
【问题讨论】：
-
您能否向我们提供有关您的弹簧设置的更多见解？您使用什么 json 编组器？默认的，杰克逊，...？
-
其实没有什么特别的设置。想尝试一下 spring boot :) 将 spring-boot-starter-data-rest 添加到 pom 并使用 @EnableAutoConfiguration 就是这样。阅读几个教程，似乎所有教程都必须开箱即用。它是，除了那个 Id 字段。更新了带有端点响应的帖子。
-
在 Spring 4 中，您还应该在控制器类上使用
@RestController并从方法中删除@ResponseBody。另外我建议让 DTO 类来处理 json 请求/响应而不是域对象。
标签： java json spring spring-boot