Question

我怎么能解决这个问题我无法得到我的InputStream InputStream inputStream = connection.getInputStream();

功能：

StringBuffer result = new StringBuffer("");
    try {
        URL url = new URL(urlString);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("User_Agent", "");
        connection.setRequestMethod("POST");
        connection.setDoInput(true);
        connection.connect();
        InputStream inputStream = connection.getInputStream();
        BufferedReader rd = new BufferedReader(new InputStreamReader(inputStream));

        String line = "";
        while ((line = rd.readLine()) != null) {
            result.append(line);
        }

    } catch (IOException e) {
        e.printStackTrace();
        Log.e("REQUEST Result", "IOException = " + e.getMessage());
    }
    Log.d("REQUEST Result", "result = " + result);
    return result;
}

logcat的：

05-04 18:18:31.190 5027-5093/? W/System.err: java.io.EOFException
05-04 18:18:31.194 5027-5093/? W/System.err:     at libcore.io.Streams.readAsciiLine(Streams.java:203)
05-04 18:18:31.194 5027-5093/? W/System.err:     at libcore.net.http.HttpEngine.readHeaders(HttpEngine.java:621)
05-04 18:18:31.194 5027-5093/? W/System.err:     at libcore.net.http.HttpEngine.readResponseHeaders(HttpEngine.java:574)
05-04 18:18:31.194 5027-5093/? W/System.err:     at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:821)
05-04 18:18:31.194 5027-5093/? W/System.err:     at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:283)
05-04 18:18:31.194 5027-5093/? W/System.err:     at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:177)
05-04 18:18:31.198 5027-5093/? W/System.err:     at com.example.sabrine123.carhapaty.Fragments.AddCarFragment.request(AddCarFragment.java:206)
05-04 18:18:31.198 5027-5093/? W/System.err:     at com.example.sabrine123.carhapaty.Fragments.AddCarFragment$AddAnnonce.doInBackground(AddCarFragment.java:154)
05-04 18:18:31.198 5027-5093/? W/System.err:     at com.example.sabrine123.carhapaty.Fragments.AddCarFragment$AddAnnonce.doInBackground(AddCarFragment.java:122)
05-04 18:18:31.198 5027-5093/? W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:287)
05-04 18:18:31.202 5027-5093/? W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
05-04 18:18:31.202 5027-5093/? W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
05-04 18:18:31.202 5027-5093/? W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
05-04 18:18:31.202 5027-5093/? W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
05-04 18:18:31.202 5027-5093/? W/System.err:     at java.lang.Thread.run(Thread.java:856)
05-04 18:18:31.202 5027-5093/? E/REQUEST Result: IOException = null
05-04 18:18:31.206 5027-5093/? D/REQUEST Result: result = 
05-04 18:18:31.206 5027-5027/? I/System.out: erreur = End of input at character 0 of

Answer 1

在尝试从中获取InputStream之前，应检查HttpURLConnection是否为null。

从HttpURLConnection获取输入流时：

InputStream inputStream = new BufferedInputStream(connection.getInputStream());

在您完成connection.connect()之后，我认为您url.openConnection()完全没必要这样做;

我还注意到你发布了内容。来自Android开发人员page on HttpURLConnection：

为了获得最佳性能，您应该在事先知道体长时调用setFixedLengthStreamingMode（int），否则调用setChunkedStreamingMode（int）。否则，HttpURLConnection将被强制在传输之前缓冲内存中的完整请求主体，浪费（并可能耗尽）堆并增加延迟。

该页面可能会解决您使用该课程的任何其他问题。

java.io.EOFException和connection.getInputStream（）

1 个答案: