Jackson的对象与json之间的转换
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;}}?