[英]Sending an HTTP POST request through the android emulator doesn't work
[英]android http request doesn't work on device, in emulator works
我知道还有其他类似的帖子,但没有帮助。
我的代码在模拟器中运行,但是在设备上却出现异常:java.lang.IllegalArgumentException:主机名不能为null
权限设置:
<uses-permission android:name="android.permission.INTERNET" />
这是代码:
package com.example.testapp;
import java.net.URI;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import android.annotation.TargetApi;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
public class mainAct extends Activity {
public void onCreate(Bundle savedState) {
super.onCreate(savedState);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
ARequestTask task = new ARequestTask();
task.execute(new String[] {});
}
class ARequestTask extends AsyncTask<String, String, String> {
@Override
protected String doInBackground(String... params) {
String hallo = "test";
Log.d("EMAIL", hallo);
try {
HttpClient client = new DefaultHttpClient();
URI uri = new URI("http://.../android/index.php");
HttpGet get = new HttpGet(uri);
HttpResponse responseGET = client.execute(get);
HttpEntity resEntity = responseGET.getEntity();
if (resEntity != null) {
Log.i("RESPONSE", EntityUtils.toString(resEntity));
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
// use the result as you wish
}
}
}
每次执行HttpGet时,仅在设备上出现异常。
尝试使用:
URI uri = URI.parse("http://.../android/index.php");
完成后,在调试器中查找uri对象。 检查它是否有效。 祝好运。
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