EOFException类和FileNotFoundException异常的HttpURLConnection类的getInputStream（）

问题描述

在尝试与后连接到使用数据 HttpURLConnection类，我得到（随机）

  EOFException类
 

或

  FileNotFoundException异常：http://ws.audioscrobbler.com/2.0/
 

在我的Nexus 4运行Android 4.2.2。

任何人都可以帮忙吗？

修改

我升级到4.3：同样的问题

 公众的InputStream的getData（字符串URL_STR，列表与LT;＆的NameValuePair GT; POSTDATA）{    地图＆LT;弦乐，对象＆gt;响应=新的HashMap＆LT;弦乐，对象＆gt;（）;    InputStream为= NULL;
    HttpURLConnection的康恩= NULL;    尝试{        网址URL =新的URL（URL_STR）;        康恩=（HttpURLConnection类）url.openConnection（）;
        conn.setReadTimeout（CONNECTION_TIMEOUT）;
        conn.setConnectTimeout（READ_TIMEOUT）;
        conn.setRequestMethod（POST）;
        conn.setDoInput（真）;        如果（POSTDATA！= NULL）{            conn.setDoOutput（真）;            OutputStream的OS = conn.getOutputStream（）;
            但是BufferedWriter作家=新的BufferedWriter（新OutputStreamWriter（OS，UTF-8））;
            writer.write（getQuery（POSTDATA））;
            writer.close（）;
            os.close（）;
        }
        //开始查询        conn.connect（）;
        //获取并返回响应        是= conn.getInputStream（）;        回报;    }赶上（IOException异常五）{        // ...    } {最后        如果（参数conn！= NULL）{
            conn.disconnect（）;
        }        如果（是！= NULL）{
            尝试{
                is.close（）;
            }赶上（IOException异常五）{
                e.printStackTrace（）;
            }
        }
    }
}
私有String getQuery（列表＆LT;＆的NameValuePair GT; PARAMS）抛出UnsupportedEncodingException
{
    StringBuilder的结果=新的StringBuilder（）;
    布尔第一= TRUE;    对（对的NameValuePair：PARAMS）
    {
        如果（第一）
            第一= FALSE;
        其他
            result.append（与＆amp;）;        result.append（URLEn coder.en code（pair.getName（），UTF-8））;
        result.append（=）;
        result.append（URLEn coder.en code（pair.getValue（），UTF-8））;
    }    返回result.toString（）;
}
 

解决方案

我检查 conn.getResponse code（）并获得了403例外可能是由于这一点。

When trying to connect to http://ws.audioscrobbler.com/2.0/ with post data using HttpURLConnection, I get (randomly)

EOFException

or

FileNotFoundException: http://ws.audioscrobbler.com/2.0/

on my Nexus 4 running Android 4.2.2.

Anybody can help?

EDIT

I upgraded to 4.3: same issue.

public InputStream getData(String url_str, List<NameValuePair> postData) {

    Map<String, Object> response = new HashMap<String, Object>();

    InputStream is = null;
    HttpURLConnection conn = null;

    try {

        URL url = new URL(url_str);

        conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(CONNECTION_TIMEOUT);
        conn.setConnectTimeout(READ_TIMEOUT);
        conn.setRequestMethod("POST");
        conn.setDoInput(true);

        if(postData != null){

            conn.setDoOutput(true);

            OutputStream os = conn.getOutputStream();
            BufferedWriter writer = new BufferedWriter( new OutputStreamWriter(os, "UTF-8"));
            writer.write(getQuery(postData));
            writer.close();
            os.close();
        }


        // Starts the query

        conn.connect();


        // Get and return response

        is = conn.getInputStream();

        return is;

    } catch (IOException e) {

        // ...

    } finally {

        if(conn != null){
            conn.disconnect();
        }

        if (is != null) {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}


private String getQuery(List<NameValuePair> params) throws UnsupportedEncodingException
{
    StringBuilder result = new StringBuilder();
    boolean first = true;

    for (NameValuePair pair : params)
    {
        if (first)
            first = false;
        else
            result.append("&");

        result.append(URLEncoder.encode(pair.getName(), "UTF-8"));
        result.append("=");
        result.append(URLEncoder.encode(pair.getValue(), "UTF-8"));
    }

    return result.toString();
}

解决方案

I checked conn.getResponseCode() and get a 403. The exception might be due to that.

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