Full Data Binding Example
suggest changeJSON data
{
"name" : { "first" : "Joe", "last" : "Sixpack" },
"gender" : "MALE",
"verified" : false,
"userImage" : "keliuyue"
}
It takes two lines of Java to turn it into a User instance:
ObjectMapper mapper = new ObjectMapper(); // can reuse, share globally
User user = mapper.readValue(new File("user.json"), User.class);
User.class
public class User {
public enum Gender {MALE, FEMALE};
public static class Name {
private String _first, _last;
public String getFirst() {
return _first;
}
public String getLast() {
return _last;
}
public void setFirst(String s) {
_first = s;
}
public void setLast(String s) {
_last = s;
}
}
private Gender _gender;
private Name _name;
private boolean _isVerified;
private byte[] _userImage;
public Name getName() {
return _name;
}
public boolean isVerified() {
return _isVerified;
}
public Gender getGender() {
return _gender;
}
public byte[] getUserImage() {
return _userImage;
}
public void setName(Name n) {
_name = n;
}
public void setVerified(boolean b) {
_isVerified = b;
}
public void setGender(Gender g) {
_gender = g;
}
public void setUserImage(byte[] b) {
_userImage = b;
}
}
Marshalling back to JSON is similarly straightforward:
mapper.writeValue(new File("user-modified.json"), user);
Found a mistake? Have a question or improvement idea?
Let me know.
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