当我调用rest api时,我会得到EOFException
。我知道上面写着回应是无效的。但不应该。我在ios应用程序中使用相同的api没有任何问题。
这是我的代码:
try {
url = new URL(baseUrl);
}
// Thrown when URL could not be parsed
catch (MalformedURLException me) {
Log.e(TAG, "URL could not be parsed. URL : " + baseUrl, me);
}
try {
// System.setProperty("http.keepAlive", "false");
// Set connection properties
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod(method);
urlConnection.setConnectTimeout(TIMEOUT * 1000);
urlConnection.setChunkedStreamingMode(0);
urlConnection.setRequestProperty("Accept", "*/*");
urlConnection.setRequestProperty("Content-type", "application/x-www-form-urlencoded");
// urlConnection.setRequestProperty("Connection", "close");
if (method.equals("POST") || method.equals("PUT")) {
// Set to true when posting data
urlConnection.setDoOutput(true);
// Write data to post to connection output stream
OutputStream out = urlConnection.getOutputStream();
out.write(postParameters.getBytes("UTF-8"));
Log.d(TAG, "Data written to output stream.");
}
// urlConnection.connect();
try {
// Get response
in = new BufferedInputStream(urlConnection.getInputStream());
} catch (IOException e) {
Log.e(TAG,
"Exception in getting connection input stream. Input stream : "
+ in, e);
}
Log.d(TAG, "content length : " + urlConnection.getContentLength());
Log.d(TAG, "content type : " + urlConnection.getContentType());
// Read the input stream that has response
statusCode = urlConnection.getResponseCode();
Log.d(TAG, "Status code : " + statusCode);
if (statusCode >= 400) {
Log.e(TAG, "Error stream : " + urlConnection.getErrorStream().toString());
}
// Passing input stream to a function.
readStream(in, statusCode);
} catch (ProtocolException pe) {
Log.e(TAG,
"Make sure HTTP method is set before connecting to URL. Line : "
+ getLineNumber(), pe);
} catch (IllegalStateException ie) {
Log.e(TAG,
"Set connection properties before connecting to URL. Line : "
+ getLineNumber(), ie);
}
// Thrown when connecting to URL times out
catch (SocketTimeoutException se) {
Log.e(TAG, "Timeout before connecting to URL : " + baseUrl
+ ". Line : " + getLineNumber(), se);
} catch (IOException e) {
Log.e(TAG, "Exception while connecting to URL : " + baseUrl, e);
} finally {
urlConnection.disconnect();
}
我试过跟踪,但没有成功。这些是用代码注释掉的。以下内容:
1)
System.setProperty("http.keepAlive", "false");
2)
urlConnection.setRequestProperty("Connection", "close");
3)
urlConnection.connect();
语句
Log.d(TAG, "Status code : " + statusCode);
未被记录。正常情况下可以。Logcat屏幕截图:
最佳答案
显然,这是由于httpurlconnection中的一个错误造成的(请参见this answer on StackOverflow)。我建议您实现一个重试机制。这就是我所实现的,例如:
/** POST an object on the server using the REST API. */
private int httpPOST(String path, JSONObject json) {
final static int MAX_RETRIES = 3;
int numTries = 0;
int responseCode = 0;
HttpsURLConnection urlConnection = null;
final long startTime = System.currentTimeMillis();
while (numTries < MAX_RETRIES) {
if (numTries != 0) {
LOGV(TAG, "Retry n°" + numTries);
}
// Create (POST) object on server
try {
byte[] bytes = json.toString().getBytes("UTF-8");
URL url = new URL(path);
urlConnection = (HttpsURLConnection) url.openConnection();
urlConnection.setDoOutput(true);
urlConnection.setFixedLengthStreamingMode(bytes.length);
urlConnection.setRequestProperty("Content-Type", "application/json;charset=utf-8");
LOGV(TAG, "HTTP POST " + url.toString());
OutputStream out = urlConnection.getOutputStream();
out.write(bytes);
out.close();
responseCode = urlConnection.getResponseCode();
LOGV(TAG, "HTTP POST response code: " + responseCode + " (" + (System.currentTimeMillis() - startTime)
+ "ms)");
return responseCode;
} catch (UnsupportedEncodingException e) {
LOGV(TAG, "Unsupported encoding exception");
} catch (MalformedURLException e) {
LOGV(TAG, "Malformed URL exception");
} catch (IOException e) {
LOGV(TAG, "IO exception: " + e.toString());
// e.printStackTrace();
} finally {
if (urlConnection != null)
urlConnection.disconnect();
}
numTries++;
}
LOGV(TAG, "Max retries reached. Giving up...");
return responseCode;
}
关于java - 使用HttpUrlConnection获取java.io.EOFException,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/17208336/