package com.fanruan.api.web;

import com.fanruan.api.net.NetworkKit;
import com.fr.json.JSONArray;
import com.fr.json.JSONObject;

import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;

/**
 * @author richie
 * @version 10.0
 * Created by richie on 2019-09-19
 * 将内容输入到输出流中
 */
public class FlushKit {

    /**
     * 输出JSON类型的字符串
     *
     * @param res HTTP响应
     * @param jo  JSON对象
     * @throws Exception 输出出现错误则抛出此异常
     */
    public static void printAsJSON(HttpServletResponse res, JSONObject jo) throws Exception {
        printAsString(res, jo.toString());
    }

    /**
     * 输出JSON类型的字符串
     *
     * @param res HTTP响应
     * @param ja  JSON数组对象
     * @throws Exception 输出出现错误则抛出此异常
     */
    public static void printAsJSON(HttpServletResponse res, JSONArray ja) throws Exception {
        printAsString(res, ja.toString());
    }

    /**
     * 输出字符串，一般来说是JSON格式
     *
     * @param res HTTP响应
     * @param jo  JSON样式的字符串
     * @throws Exception 输出出现错误则抛出此异常
     */
    public static void printAsString(HttpServletResponse res, String jo) throws Exception {
        PrintWriter pw = NetworkKit.createPrintWriter(res);
        pw.print(jo);
        pw.flush();
        pw.close();
    }
}