HttpHostConnectException:连接被拒绝Android
我试图通过HttpPost连接并发送用户名和密码到网站,然后从该网站接收到一个字符串。我曾尝试在过去为我工作,但现在各种方法,当我发送的用户名和密码识别出应用时间长达4分钟,然后吐出来的是以下情况例外:HttpHostConnectException:连接被拒绝Android
07-16 16:32:32.897: W/System.err(632): Unable to connect to the server
07-16 16:32:32.907: W/System.err(632): org.apache.http.conn.HttpHostConnectException: Connection to http://devdashboard.company refused
07-16 16:32:32.917: W/System.err(632): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:183)
07-16 16:32:32.917: W/System.err(632): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
07-16 16:32:32.917: W/System.err(632): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
07-16 16:32:32.917: W/System.err(632): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
07-16 16:32:32.917: W/System.err(632): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
07-16 16:32:32.917: W/System.err(632): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
07-16 16:32:32.927: W/System.err(632): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
07-16 16:32:32.927: W/System.err(632): at company.android.dashboard.app.HttpHelperAndroid.sendToHttp(HttpHelperAndroid.java:66)
07-16 16:32:32.927: W/System.err(632): at company.android.dashboard.app.DashboardAppActivity.goToDashboard(DashboardAppActivity.java:62)
07-16 16:32:32.927: W/System.err(632): at java.lang.reflect.Method.invokeNative(Native Method)
07-16 16:32:32.937: W/System.err(632): at java.lang.reflect.Method.invoke(Method.java:511)
07-16 16:32:32.937: W/System.err(632): at android.view.View$1.onClick(View.java:3039)
07-16 16:32:32.947: W/System.err(632): at android.view.View.performClick(View.java:3511)
07-16 16:32:32.947: W/System.err(632): at android.view.View$PerformClick.run(View.java:14105)
07-16 16:32:32.947: W/System.err(632): at android.os.Handler.handleCallback(Handler.java:605)
07-16 16:32:32.957: W/System.err(632): at android.os.Handler.dispatchMessage(Handler.java:92)
07-16 16:32:32.957: W/System.err(632): at android.os.Looper.loop(Looper.java:137)
07-16 16:32:32.967: W/System.err(632): at android.app.ActivityThread.main(ActivityThread.java:4424)
07-16 16:32:32.977: W/System.err(632): at java.lang.reflect.Method.invokeNative(Native Method)
07-16 16:32:32.977: W/System.err(632): at java.lang.reflect.Method.invoke(Method.java:511)
07-16 16:32:32.977: W/System.err(632): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
07-16 16:32:32.987: W/System.err(632): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
07-16 16:32:32.987: W/System.err(632): at dalvik.system.NativeStart.main(Native Method)
07-16 16:32:32.987: W/System.err(632): Caused by: java.net.ConnectException: failed to connect to /50.19.240.232 (port 80): connect failed: ETIMEDOUT (Connection timed out)
07-16 16:32:32.997: W/System.err(632): at libcore.io.IoBridge.connect(IoBridge.java:114)
07-16 16:32:32.997: W/System.err(632): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
07-16 16:32:32.997: W/System.err(632): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
07-16 16:32:33.007: W/System.err(632): at java.net.Socket.connect(Socket.java:842)
07-16 16:32:33.007: W/System.err(632): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
07-16 16:32:33.017: W/System.err(632): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
07-16 16:32:33.017: W/System.err(632): ... 22 more
07-16 16:32:33.027: W/System.err(632): Caused by: libcore.io.ErrnoException: connect failed: ETIMEDOUT (Connection timed out)
07-16 16:32:33.047: W/System.err(632): at libcore.io.Posix.connect(Native Method)
07-16 16:32:33.047: W/System.err(632): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:85)
07-16 16:32:33.047: W/System.err(632): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
07-16 16:32:33.057: W/System.err(632): at libcore.io.IoBridge.connect(IoBridge.java:112)
07-1
6 16:32:33.057: W/System.err(632): ... 27 more
上网权限在我的XML清单文件启用
我当前的实现是这样的:
String LOGIN = "[email protected]";
String PASSWORD ="password1";
//JSONObject to send the username and pw
JSONObject json = new JSONObject();
//put the path in the JSONArray object
JSONArray vect = new JSONArray();
vect.put("company Android Library");
vect.put("Rocket Ship");
int duration = 50;
try {
json.put("email", LOGIN);
json.put("password", PASSWORD);
json.put("json", "true");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.d(TAG, "ABOUT TO SEND:" + json.toString());
JSONObject inJson = HttpHelperAndroid.sendToHttp(json, "http://devdashboard.company/login");
if(inJson != null)
{
Log.d(TAG, "RECIEVED the JSON:" + inJson.toString());
}
else
Log.d(TAG, "THE RESPONSE WAS NULL");
}
而且HttpHelperAndroid类看起来像这样:
public class HttpHelperAndroid
{
private static final String TAG = "HttpHelperAndroid";//TAG for the LogCat(debugging)
private static boolean responseSuccessful = true;
/**
* sends the JSONObject parameter to the desired URL parameter and gets the response
*
* @param url the URL to which the JSONObject should be sent
* @param jsonObjOut the JSONObject that is to be sent
* @return the response from the server as a JSONObject
*/
public static JSONObject sendToHttp(JSONObject jsonObjOut, String url) {
responseSuccessful = true;
try
{
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpRequest = new HttpPost(url);
//convert the JSONObject to a string
StringEntity se;
//set our StringEntity to the JSONObject as a string
se = new StringEntity(jsonObjOut.toString());
// Set HTTP params
httpRequest.setEntity(se);
httpRequest.setHeader("Accept", "application/json");
httpRequest.setHeader("Content-type", "application/json");
httpRequest.setHeader("Accept-Encoding", "gzip"); //for gzip compression
//get the current time
long oldTime = System.currentTimeMillis();
HttpResponse response = null;
try
{
//execute the http request and get the response
response = (HttpResponse) httpClient.execute(httpRequest);
}
catch(HttpHostConnectException e)
{
System.err.println("Unable to connect to the server");
e.printStackTrace();
responseSuccessful = false;
}
//only continue executing if we got a response from the server
if(responseSuccessful)
{
//print how long the response took to the LogCat if it's on
Log.i(TAG, "HTTPResponse received in [" + (System.currentTimeMillis()-oldTime) + "ms]");
// Get hold of the response entity (-> the data):
HttpEntity entity = response.getEntity();
if (entity != null) {
// Read the content stream
InputStream in = entity.getContent();
Header contentEncoding = response.getFirstHeader("Content-Encoding");
if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {
in = new GZIPInputStream(in);
}
// convert content stream to a String
String resultString= streamToString(in);
//close the stream
in.close();
// convert the String into a JSONObject
JSONObject jsonObjRecv = new JSONObject(resultString);
//take a peak at the JSONObject we got back if the LogCat is on
Log.i(TAG,"<JSONObject>\n"+jsonObjRecv.toString()+"\n</JSONObject>");
//return the JSONObject we got back from the server
return jsonObjRecv;
}
}
}
//catch any exception that was thrown
catch (Exception e)
{
//Print the exception
e.printStackTrace();
}
return null;
}
private static String streamToString(InputStream is)
{
//create a new BufferedReader for the input stream
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
//create a new StringBuilder to append the lines
StringBuilder sb = new StringBuilder();
//initialize an empty string
String line = null;
try
{
//iterate as long as there is still lines to be read
while ((line = reader.readLine()) != null)
{
//append the line and a newline character to our StringBuilder
sb.append(line + "\n");
}
}
//catch an IOException and print it
catch (IOException e) {
e.printStackTrace();
}
//close the stream when we're done
finally
{
try
{
is.close();
}
//catch and print an exception if it's thrown
catch (IOException e)
{
e.printStackTrace();
}
}
//return the stream converted to a string
return sb.toString();
}
}
这里是我的XML只是踢:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="company.android.dashboard.app"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-sdk android:minSdkVersion="7" />
<application
android:icon="@drawable/company_android_ico"
android:label="@string/app_name" >
<activity
android:name=".DashboardAppActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
我已经使用了HttpHelper类在过去的项目,它很适合我,除了我试图实现这个使用namevaluepairs中:
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("email", "[email protected]"));
nameValuePairs.add(new BasicNameValuePair("password", "password1"));
nameValuePairs.add(new BasicNameValuePair("json", "true"));
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
这产生了相同的结果。
难道这不知是一个证书的事情吗?或者可能与某个损坏的XML文件有关(我尝试重新制作该项目和xml文件)Android HTTP Connection refused 或者某种Android主机文件问题?
我愿意接受任何建议!
我从很多角度对此进行了研究,我很乐意提供任何其他有用的信息!我非常感谢你的时间!
注意:该网址是一个虚拟网址,而不是我连接到的实际网址,出于安全原因。我可以从命令行使用参数控制实际的网站,它可以正常工作,我也可以通过Web浏览器正常登录。
编辑我发现了问题!但不幸的是解决方案。所以问题是我正在使用在全局DNS服务器上没有域项的开发服务器url。所以要解决这个问题,我需要编辑我的Android设备/模拟器上的主机文件...有谁知道这可以做到合理吗?
我发现了这个问题!所以问题是我正在使用在全局DNS服务器上没有域项的开发服务器url。
所以有这个问题有两个可能的解决方案:
1)编辑hosts文件在Android设备上(需要生根您的电话):How to change the hosts file on android
2)获取在全球DNS注册的服务器服务器。 (也很难做到如果你不负责的网址)
反正我希望这也能帮助别人!
有几个可能性
1)的网址是不正确“http://devdashboard.company/login”是不正确的。至少检查浏览器。 也可以ping主机。
2)这应该是一个https连接。
3)有一些认证要求。
4)您缺少端口号。或域没有正确设置。 也许端口80的默认值是不正确的?
5)该电话不应该是一个职位。
一般来说,您要么负责服务器,要么不负责。看来,这是一些elses的责任,你应该问他们什么是正确的网址和参数。所以它可能没有任何错误,但你需要询问他们关于连接的验证。
您可以做的另一件事是尝试在成功连接的应用程序中查看url的样子。看看这个。
问题出在wifi睡眠。 请使用
WifiManager wm = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifiLock = wm.createWifiLock(WifiManager.WIFI_MODE_FULL , "MyWifiLock");
wifiLock.acquire();
和权限:
uses-permission android:name="android.permission.WAKE_LOCK";
请遵循这些解决方案可能是其中之一中解决您的问题。
1>检查你的清单文件的互联网许可有没有。
2>通过休息客户端浏览器检查您的URL并传递适当的请求。
3>打开手机一样的网址: - http://your IP地址/端口这只是为了检查你是否有许可或不移动,打开这个网址。
这篇文章已经过时了,但它是使用googling这个错误时的第一个结果。我遇到了同样的异常,并且在我的代码中一切都完全正确。我在AndroidManifest.xml文件中注释了包含INTERNET许可权的行,运行了应用程序,单击/点击了我的按钮以发送HTTP请求并获取异常,关闭了应用程序,返回清单,取消注释权限行,运行该应用程序再次,并且异常已解决!
2015年的这种错误(以及像“Android API 21”和Intellij IDEA 14的最新编译工具等“高级”工具)令我发疯!你正在接近你的最后期限,这种错误彻底破坏了你的工作!
根据你的logcat的第二行: > 07-16 16:32:32.907:W/System.err的(632):org.apache.http.conn.HttpHostConnectException:连接到http:// devdashboard 。公司拒绝。 你确定这不仅仅是一个网络问题,而不是你的代码问题? 您是否检查过服务器配置? – 2012-07-16 23:34:05
你也确定它应该是一个职位? – 2012-07-16 23:38:45
也请限制你发布的内容。您应该编辑特定于您的环境的信息。 – 2012-07-16 23:47:15