R<T> (返回页面数据载体)

public class R<T> implements Serializable {

    private static final long serialVersionUID = 1L;

    public static final int NO_LOGIN = -1;

    public static final int SUCCESS = 0;

    public static final int FAIL = 1;

    public static final int NO_PERMISSION = 2;

    private String msg = "success";

    private int code = SUCCESS;

    private T data;

    public R() {
        super();
    }

    public R(final T data) {

        super();
        if (data instanceof Boolean) {
            if (!(Boolean) data) {
                this.msg = "error";
                this.code = 1;
            }
        }
        this.data = data;
    }

    public R(final T data, final String msg) {
        super();
        if (data instanceof Boolean) {
            if (!(Boolean) data) {
                this.msg = msg;
                this.code = 1;
            }
        }
        this.data = data;
    }

    public R(final Throwable e) {
        super();
        this.msg = e.getMessage();
        this.code = FAIL;
    }

    public String getMsg() {
        return msg;
    }

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

    public int getCode() {
        return code;
    }

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

    public T getData() {
        return data;
    }

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