JSON Names from SpringFramework #Controller, #ResponseBody - json

Question

I've got a simple Spring Controller who's purpose is to return a RESTful JSON response of my entity objects. Its returning the data in standard camelCase names which match my entity. However, I'd like the JSON names to match the database fields, which is simply TitleCase. Is there a simple way to do this? Below is a sample of the Controller and the JSON returned.
#Controller
#RequestMapping(path="/Users")
public class UserController {
#Autowired
private UserRepository userRepository;
#GetMapping(path="/List")
public #ResponseBody Iterable<User> getAllUsers() {
// This returns a JSON or XML with the users
return userRepository.findAll();
}
}
Resulting JSON:
{"id":1,"userName":"SYSTEM","password":"xxxxx","firstName":"System","lastName":"System","phone":"XXX-XXX-XXXX","email":"system#test.com","reviewer":false,"admin":false}
Here's my User entity class:
package com.prs.business;
import java.io.Serializable;
import java.sql.Timestamp;
import java.time.LocalDateTime;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonProperty;
#Entity
public class User implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private int id;
#Column(name="username")
#JsonProperty("UserName")
private String userName;
private String password;
#Column(name="firstname")
private String firstName;
#Column(name="lastname")
private String lastName;
private String phone;
private String email;
#Column(name="isreviewer")
private boolean reviewer;
#Column(name="isadmin")
private boolean admin;
#Column(name="isactive")
private boolean active;
#Column(name="datecreated")
#JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSS")
private Timestamp dateCreated;
public User() {
userName = "";
password = "";
}
public User(int id, String userName, String password, String firstName, String lastName, String phoneNumber,
String email, boolean reviewer, boolean admin) {
super();
this.id = id;
this.userName = userName;
this.password = password;
this.firstName = firstName;
this.lastName = lastName;
this.phone = phoneNumber;
this.email = email;
this.reviewer = reviewer;
this.admin = admin;
}
public User(String un, String pw, String fn, String ln, String pn, String e, boolean m, boolean a) {
setUserName(un);
setPassword(pw);
setFirstName(fn);
setLastName(ln);
setPhoneNumber(pn);
setEmail(e);
setReviewer(m);
setAdmin(a);
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getPhone() {
return phone;
}
public void setPhoneNumber(String phoneNumber) {
this.phone = phoneNumber;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public boolean isReviewer() {
return reviewer;
}
public void setReviewer(boolean inReviewer) {
this.reviewer = inReviewer;
}
public boolean isAdmin() {
return admin;
}
public void setAdmin(boolean inAdmin) {
this.admin = inAdmin;
}
public boolean isActive() {
return admin;
}
public void setActive(boolean inActive) {
this.admin = inActive;
}
public Timestamp getDateCreated() {
return dateCreated;
}
public void setDateCreated(Timestamp dateCreated) {
this.dateCreated = dateCreated;
}
#Override
public String toString() {
return "User [id=" + id + ", userName=" + userName + ", password=" + password + ", firstName=" + firstName
+ ", lastName=" + lastName + ", phoneNumber=" + phone + ", email=" + email + ", reviewer="
+ reviewer + ", admin=" + admin + "]";
}
}

Answer 1

How to enable pascal case for all JSON property names?
Put the following setting in your application.properties
spring.jackson.property-naming-strategy=UPPER_CAMEL_CASE

Answer 2

userRepository.findAll() will probably return a POJO, right?
In that pojo, before the getters or before the fields declaratin, you can add an annotion like
#JsonProperty("<hereYouWriteTheNameYouPrefer>")
private String userName;
or
private String userName;
#JsonProperty("<hereYouWriteTheNameYouPrefer>")
public String getUserName(){
return userName;
}