HttpClient的错误 [英] HttpClient error
本文介绍了HttpClient的错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我特林使用HTTP客户端通过一个PHP脚本的Web服务器上执行一些简单的SNMP操作。所以PHP脚本听GET参数。这里是我的code：
I'm tring to use http client to perform some simple snmp operations via a php script on a web server. So the php script listen to GET parameters. Here is my code:
EditText host = (EditText)findViewById(R.id.editText);
EditText port = (EditText)findViewById(R.id.editText2);
EditText community = (EditText)findViewById(R.id.editText3);
String url = "http://192.168.0.102/za/getstatus.php?host=" + host.getText().toString() + "&port=" + port.getText().toString() + "&com=" + community.getText().toString() + "&oid=" + 2 + "&port1=" + 2;
// here is my url = http://192.168.0.102/za/getstatus.php?
// host=192.168.0.101&port=10100&com=private&oid=2&port1=2
HttpClient httpclient = new DefaultHttpClient();
// Prepare a request object
HttpPost httpPost = new HttpPost(url);
try {
HttpResponse response = httpclient.execute(httpPost);
// writing response to log
Log.d("Http Response:", response.toString());
} catch (ClientProtocolException e) {
// writing exception to log
e.printStackTrace();
} catch (IOException e) {
// writing exception to log
e.printStackTrace();
}
这时候我发送HTTP POST我应该得到的响应是INTEGER：0或INTEGER：1，所以我应该检查结果
The response that I should get when I send the Http post is INTEGER: 0 or INTEGER: 1 so I should check that result.
错误日志，当我尝试发送一个HTTP POST：
Error Log when I try to send a http post:
12-29 06:48:21.979 1545-1545/com.example.test.test1 E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.test.test1, PID: 1545
java.lang.IllegalStateException: Could not execute method of the activity
at android.view.View$1.onClick(View.java:3823)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3818)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1145)
at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
at libcore.io.IoBridge.connect(IoBridge.java:112)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
at java.net.Socket.connect(Socket.java:843)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
at com.example.zara.sunsannici.MainActivity.selfDestruct(MainActivity.java:51)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at android.view.View$1.onClick(View.java:3818)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
12-29 06:48:24.919 1545-1545/com.example.test.test1 I/Process﹕ Sending signal. PID: 1545 SIG: 9
也许有，我可以用一些其他的方法。例如在C＃我使用Web客户端是更容易使用，并获得返回的文本
Maybe there is some other methods that I can use. For example in C# I use WebClient that is more easy to use and to get the returned text.
感谢您的帮助。
推荐答案
你不能让它在UI线程
下面是使用AsyncTask的一个例子
Here is an example using AsyncTask
EditText host = (EditText)findViewById(R.id.editText);
EditText port = (EditText)findViewById(R.id.editText2);
EditText community = (EditText)findViewById(R.id.editText3);
String url = "http://192.168.0.102/za/getstatus.php?host=" + host.getText().toString() + "&port=" + port.getText().toString() + "&com=" + community.getText().toString() + "&oid=" + 2 + "&port1=" + 2;
new Task(url).execute();
}
class Task extends AsyncTask<Void, Void, HttpResponse>{
private String url;
Task(String url) {
this.url = url;
}
@Override
protected HttpResponse doInBackground(Void... voids) {
HttpClient httpclient = new DefaultHttpClient();
// Prepare a request object
HttpPost httpPost = new HttpPost(url);
try {
return httpclient.execute(httpPost);
} catch (ClientProtocolException e) {
// writing exception to log
e.printStackTrace();
} catch (IOException e) {
// writing exception to log
e.printStackTrace();
return null;
}
@Override
protected void onPostExecute(HttpResponse httpResponse) {
super.onPostExecute(httpResponse);
if(httpResponse != null){
Log.d("Http Response:", response.toString());
}
}
}
这篇关于HttpClient的错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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