封裝一個統一返回json結果類JsonResult

import java.io.Serializable;

public class JsonResult implements Serializable{
 
    private static final long serialVersionUID = -4800793124936904868L;
    public static final int SUCCESS=200;
    public static final int ERROR=201;
 
    /** 
     * 返回是否成功的狀態,200表示成功, 
     * 201或其他值 表示失敗
     */
    private int state;
    /**
     * 成功時候,返回的JSON數據
     */
    private Object data;
    /**
     * 是錯誤時候的錯誤消息
     */
    private String message;
 
 
    public JsonResult() {
    }
 
 
    public JsonResult(int state, Object data, String message) {
        this.state = state;
        this.data = data;
        this.message = message;
    }
 
    public JsonResult(Throwable e){
        state = ERROR;
        data=null;
        message=e.getMessage();
    }
 
    public JsonResult(Object data){
        state = SUCCESS;
        this.data=data;
        message="";
    }
 
    public int getState() {
        return state;
    }
 
 
    public void setState(int state) {
        this.state = state;
    }
 
 
    public Object getData() {
        return data;
    }
 
 
    public void setData(Object data) {
        this.data = data;
    }
 
 
    public String getMessage() {
        return message;
    }
 
 
    public void setMessage(String message) {
        this.message = message;
    }
 
 
    @Override
    public String toString() {
        return "JsonResult [state=" + state + ", data=" + data + ", message=" + message + "]";
    }
 
}