NetUtils_netutil.downloadbytes-优快云博客

本文介绍了一个简单的Java网络请求工具类，用于发起GET请求并获取JSON响应。该工具使用HttpURLConnection进行网络通信，从指定URL读取数据，并通过缓冲读取器逐行构建返回的JSON字符串。

package com.example.bawie.bannerdome;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * Created by fan on 2017/12/2.
 */

public class NetWorkUtils {

    public static String getJson(String uristring) {
        try {
            URL url = new URL(uristring);
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setRequestMethod("GET");

            urlConnection.setReadTimeout(8000);

            int responseCode = urlConnection.getResponseCode();

            if (responseCode == 200) {

                //请求成功得到输入流

                InputStream inputStream = urlConnection.getInputStream();

                StringBuilder builder = new StringBuilder();

                BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));

                String data = "";

                while ((data = bufferedReader.readLine()) != null) {



                    builder.append(data);

                }



                return builder.toString();

            }

        } catch (MalformedURLException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

        return "";

    }

}