SSM之JSON通用返回格式

/**
 * 通用的返回的类
 * 
 */
public class Result {
    //状态码   100-成功    200-失败
    private int code;
    //提示信息
    private String msg;
    
    //用户要返回给浏览器的数据
    private Map<String, Object> extend = new HashMap<String, Object>();

    public static Result success(){
        Result result = new Result();
        result.setCode(100);
        result.setMsg("处理成功！");
        return result;
    }
    
    public static Result fail(){
        Result result = new Result();
        result.setCode(200);
        result.setMsg("处理失败！");
        return result;
    }
    
    public Result add(String key,Object value){
        this.getExtend().put(key, value);
        return this;
    }
    
    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Map<String, Object> getExtend() {
        return extend;
    }

    public void setExtend(Map<String, Object> extend) {
        this.extend = extend;
    }