当从 SpringMVC 以 JSON 格式发送时，动态忽略 Java 对象中的字段
我有这样的模型班，用来冬眠的
@Entity
@Table(name = "user", catalog = "userdb")
@JsonIgnoreProperties(ignoreUnknown = true)
public class User implements java.io.Serializable {
private Integer userId;
private String userName;
private String emailId;
private String encryptedPwd;
private String createdBy;
private String updatedBy;
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "UserId", unique = true, nullable = false)
public Integer getUserId() {
return this.userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
@Column(name = "UserName", length = 100)
public String getUserName() {
return this.userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
@Column(name = "EmailId", nullable = false, length = 45)
public String getEmailId() {
return this.emailId;
}
public void setEmailId(String emailId) {
this.emailId = emailId;
}
@Column(name = "EncryptedPwd", length = 100)
public String getEncryptedPwd() {
return this.encryptedPwd;
}
public void setEncryptedPwd(String encryptedPwd) {
this.encryptedPwd = encryptedPwd;
}
public void setCreatedBy(String createdBy) {
this.createdBy = createdBy;
}
@Column(name = "UpdatedBy", length = 100)
public String getUpdatedBy() {
return this.updatedBy;
}
public void setUpdatedBy(String updatedBy) {
this.updatedBy = updatedBy;
}
}
在 Spring MVC 控制器中，使用 DAO，我能够获取对象，并返回为 JSON 对象。
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping(value = "/getUser/{userId}", method = RequestMethod.GET)
@ResponseBody
public User getUser(@PathVariable Integer userId) throws Exception {
User user = userService.get(userId);
user.setCreatedBy(null);
user.setUpdatedBy(null);
return user;
}
}
视图部分是使用 AngularJS 完成的，因此它将得到这样的 JSON
{
"userId" :2,
"userName" : "john",
"emailId" : "john@gmail.com",
"encryptedPwd" : "Co7Fwd1fXYk=",
"createdBy" : null,
"updatedBy" : null
}
如果我不想设置加密密码，我将设置该字段也为空。
但是我不想这样，我不想发送所有字段到客户端。如果我不想密码，updatedby，createdby 字段发送，我的结果 JSON 应该像
{
"userId" :2,
"userName" : "john",
"emailId" : "john@gmail.com"
}
我不想从其他数据库表发送到客户端的字段列表。因此，它将根据登录的用户进行更改。我该怎么做？
我希望你明白我的问题。
