Java后端返回结果统一封装

毕设做的是后台管理系统，需要前端接收后端的数据，为了前后端交互的方便，前端接收的数据都是同一种数据格式，这个数据格式就是结果统一封装类，代码如下：

public class TableResult extends LinkedHashMap implements Serializable {
    private static final long serialVersionUID = 1L;
    public static final int CODE_SUCCESS = 0;
    public static final int CODE_ERROR = -1;

    public TableResult(int code, int count,String msg, Object data) {
        this.setCode(code);
        this.setMsg(msg);
        this.setData(data);
        this.setCount(count);
    }
    public TableResult(int count,Object data){
        this.setCode(0);
        this.setCount(count);
        this.setMsg("");
        this.setData(data);
    }

    public Integer getCode() {
        return (Integer)this.get("code");
    }

    public String getMsg() {
        return (String)this.get("msg");
    }

    public Object getData() {
        return this.get("data");
    }

    public Integer getCount(){
        return (Integer)this.get("count");
    }

    public TableResult setCode(int code) {
        this.put("code", code);
        return this;
    }

    public TableResult setMsg(String msg) {
        this.put("msg", msg);
        return this;
    }

    public TableResult setData(Object data) {
        this.put("data", data);
        return this;
    }

    public TableResult setCount(int count){
        this.put("count",count);
        return this;
    }

    public TableResult set(String key, Object data) {
        this.put(key, data);
        return this;
    }

    public TableResult setMap(Map map) {
        Iterator var2 = map.keySet().iterator();

        while(var2.hasNext()) {
            String key = (String)var2.next();
            this.put(key, map.get(key));
        }

        return this;
    }

    public static TableResult ok() {
        return new TableResult(0, 0,"ok", (Object)null);
    }

    public static TableResult ok(String msg) {
        return new TableResult(0,0, msg, (Object)null);
    }

    public static TableResult error() {
        return new TableResult(-1, 0,"error", (Object)null);
    }

    public static TableResult error(String msg) {
        return new TableResult(-1,0, msg, (Object)null);
    }

    public static TableResult get(int code, int count,String msg, Object data) {
        return new TableResult(code,count, msg, data);
    }

    public String toString() {
        return "{"code": " + this.getCode() +", "count": " + this.getCount() + ", "msg": "" + this.getMsg() + "", "data": "" + this.getData() + ""}";
    }
}

统一结果封装有四个字段：

• code
• count
• msg
• data

code是状态码，在上面的代码中，0代表成功，-1代表出错 

count是记录总条数

msg是对应的提示消息

data是列表数据

这个类是模仿sa-token里面的SaResult统一结果封装