android studio-android客戶端解析json，出現亂碼 ( 沒有中文 ) ，請大神指點

android客戶端解析json，出現亂碼 ( 沒有中文 ) ，請大神指點

本人使用Tomcat apache-tomcat-8.0.28虛擬服務器，默認utf-8編碼

update.json

{"versionName":"2.0","versionCode":2,"description":"Hello word!!","downloadUrl":"http://www.baidu.com"}

android studio 1.3.1 做了個客戶端：部分編碼如下:

private void checkVersion(){
new Thread(){
@Override
public void run() {

            try {
                URL url = new URL("http://10.0.2.2:8080/update.json");
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.setRequestMethod("GET");
                conn.setConnectTimeout(5000);
                conn.setReadTimeout(5000);
                conn.connect();

                int responseCode = conn.getResponseCode();

                if(responseCode==200){
                    InputStream inputStream = conn.getInputStream();
                    String result = StreamUtils.readFromSteam(inputStream);
                    Log.e("System.Out.Print", "result:"+result);

                    //解析Json

                    JSONObject jo = new JSONObject(result);
                    mVersionName = jo.getString("versionName");
                    mVersionCode = jo.getInt("versionCode");
                    mDescription = jo.getString("description");
                    mDownloadUrl = jo.getString("downloadUrl");


                    Log.e("System.Out.Print", "run "+mVersionName+";"+mVersionCode);
                    Log.e("System.Out.Print", "run "+mDescription+";"+mDownloadUrl);
                }

            } catch (MalformedURLException e) {
               // utl錯誤的異常

                e.printStackTrace();
            } catch (IOException e) {
                //網絡錯誤的異常

                e.printStackTrace();
            }
            catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }.start();
}

public class StreamUtils {

/**
 * readFromSteam() 將輸入流讀成String後返回
 * @return
 */
public static String readFromSteam(InputStream in) throws IOException {

    ByteArrayOutputStream out = new ByteArrayOutputStream();
    int len = 0;
    byte[] buffer = new byte[1024];

    while((len=in.read())!=-1){
        out.write(buffer,0,len);
    }
        String result = out.toString();
        in.close();
        out.close();
    return result;
    }

}


    每次運行後的結果如下：

    ![圖片說明](http://img.ask.csdn.net/upload/201602/21/1456069188_115538.jpg)


    請大神指點

最佳回答：

在用HttpURLConnection的時候，沒有設置默認編碼，可能是utf-8和 "ISO-8859-1"混淆了。
然後模擬器和手機不一樣的原因是；Android版本不一樣導致HttpURLConnection的具體實現不一樣，記得Android4.4之後，HttpURLConnection底層采用HttpOK了。