HTTP GET采用Android HttpURLConnection类 [英] Http Get using Android HttpURLConnection
问题描述
我是新来的Java和Android开发,并尝试创建一个简单的应用程序,它应该与Web服务器,并使用一些数据添加到数据库中的HTTP GET。
I'm new to Java and Android development and try to create a simple app which should contact a web server and add some data to a database using a http get.
当我使用网络浏览器调用在我的电脑它工作得很好。然而,当我在做Android模拟器运行应用程序调用没有数据被添加。
When I do the call using the web browser in my computer it works just fine. However, when I do the call running the app in the Android emulator no data is added.
我添加Internet权限的应用程序的清单。 logcat的没有报告任何问题。
I have added Internet permission to the app's manifest. Logcat does not report any problems.
谁能帮我弄清楚什么是错的?
Can anyone help me to figure out what's wrong?
下面是源$ C $ C:
Here is the source code:
package com.example.httptest;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
public class HttpTestActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv = new TextView(this);
setContentView(tv);
try {
URL url = new URL("http://www.mysite.se/index.asp?data=99");
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.disconnect();
tv.setText("Hello!");
}
catch (MalformedURLException ex) {
Log.e("httptest",Log.getStackTraceString(ex));
}
catch (IOException ex) {
Log.e("httptest",Log.getStackTraceString(ex));
}
}
}
推荐答案
尝试从这个获取输入流,那么你可以得到的文本数据,那么: -
Try getting the input stream from this you can then get the text data as so:-
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL("http://www.mysite.se/index.asp?data=99");
urlConnection = (HttpURLConnection) url
.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader isw = new InputStreamReader(in);
int data = isw.read();
while (data != -1) {
char current = (char) data;
data = isw.read();
System.out.print(current);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
您或许可以使用其他的InputStream读者如缓冲的读者也。
You can probably use other inputstream readers such as buffered reader also.
问题是,当你打开连接 - 它没有拉的任何数据。
The problem is that when you open the connection - it does not 'pull' any data.
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