项目中自定义返回任意数据或者消息

public class AjaxMessage implements Serializable {

    private String state;
    private String msg;
    private Object data;

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }

    public String getMsg() {
        return msg;
    }

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

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

    public String toJson() {
        return JSON.toJSONString(this);
    }


    public static Builder SYS_ERR() {
        return new Builder(ResponseCode.SYS_ERR);
    }

    public static Builder SUCC() {
        return new Builder(ResponseCode.SUCC);
    }


    public static Builder ERR(ResponseCode responseCode) {
        return new Builder(responseCode);
    }

    public static Builder ERR(String state, String msg) {
        return new Builder(state, msg);
    }

    public static Builder ERR(String msg) {
        return new Builder("00001", msg);
    }


    public AjaxMessage(Builder builder) {
        this.state = builder.state;
        this.msg = builder.msg;
        this.data = builder.data;
    }

    public static class Builder {

        private String state;
        private String msg;
        private Object data;

        public Builder(ResponseCode responseCode) {
            this.state = responseCode.getState();
            this.msg = responseCode.getMsg();
        }

        public Builder(String state, String msg) {
            this.state = state;
            this.msg = msg;
        }


        public Builder code(String state) {
            this.state = state;
            return this;
        }

        public Builder message(String msg) {
            this.msg = msg;
            return this;
        }

        public Builder data(Object data) {
            this.data = data;
            return this;
        }

        public AjaxMessage build() {
            return new AjaxMessage(this);
        }
    }


}