后台对象，使用google json组件用json格式返回给前端的问题

public class A{
    private int id;
    pirvate Date createTime
    private B b;   
}

public class B{
    private int id;
    private String name;
    private Date createTime;
}

此时，如果用google json组件返回A对象时，会报declares multiple JSON fields named

异常，出现这个异常是因为，两个类都有createTime同名属性。

解决方案：

public class SomeClassWithFields {
   @SerializedName("name") private final String someField;
   private final String someOtherField;

   public SomeClassWithFields(String a, String b) {
     this.someField = a;
     this.someOtherField = b;
   }
 }

===== OUTPUT =====
 {"name":"a","someOtherField":"b"}

http://google-gson.googlecode.com/svn/trunk/gson/docs/javadocs/com/google/gson/annotations/SerializedName.html