http（S）系列之（五）：android之Http（s）URLConnection（6）:流程图

前言

讲个题外话：大概小学四年级，老师会讲解写作文要有大纲，可惜，自始至终都没有认真对待这件事情。现在认真对待我相信应该不算晚，不只是写文章，做所有的事情都应该有大纲，这样不会在过程中手忙脚乱。

demo

package com.fosheng.originaltec.urlconnection;

import org.junit.Test;

/**
 * Copyright (C), 2019-2020, 佛生
 * FileName: InterfaceUtilTest
 * Author: 佛学徒
 * Date: 2020/12/2 10:08
 * Description:
 * History:
 */
public class InterfaceUtilTest {

    @Test
    public void testURLConnection() {
        String result = InterfaceUtil.gethttp("https://www.baidu.com/");
        System.out.println("輸出結果：" + result);
    }
}

package com.fosheng.originaltec.urlconnection;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

/**
 * Copyright (C), 2019-2020, 佛生
 * FileName: InterfaceUtil
 * Author: 佛学徒
 * Date: 2020/12/2 9:48
 * Description: 調用網絡請求接口，測試post
 * History:
 */
public class InterfaceUtil {

    public static String gethttp(String urlStr) {
        String result;
        HttpURLConnection connection = null;
        try {
            URL url = new URL(urlStr);
            //得到connection对象。
            connection = (HttpURLConnection) url.openConnection();
            //设置请求方式
            connection.setRequestMethod("GET");
            //连接
            connection.connect();
            //得到响应码
            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                //得到响应流
                InputStream inputStream = connection.getInputStream();
                //将响应流转换成字符串
                result = is2String(inputStream);//将流转换为字符串。
            } else {
                result = "當前狀態信息：" + responseCode;
            }

        } catch (Exception e) {
            e.printStackTrace();
            result = e.getMessage();
        } finally {
            if (connection != null) {
                connection.disconnect();
            }
        }

        return result;
    }

    private static String is2String(InputStream inputStream) throws IOException {
        ByteArrayOutputStream result = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int length;
        while ((length = inputStream.read(buffer)) != -1) {
            result.write(buffer, 0, length);
        }
        String str = result.toString(StandardCharsets.UTF_8.name());
        return str;
    }
}

代码先贴出来，流程图就是按照该demo实现

流程图

好吧，我的流程图（独一无二，这么丑的图片也当得起这个称呼了！！！），绘了好久，对照一下我在网上找的流程图

标签：URLConnection,http,String,java,connection,result,import,Http,流程图
来源： https://blog.csdn.net/foshengtang/article/details/111355559