用php搭建了个简单的服务器端，然后在android中使用httpclient来调用．
String httpurl="http://192.168.1.100/http/httptest.php?para=hello";
HttpGet httpGet=new HttpGet(httpurl);
HttpParams httpParameters = new BasicHttpParams();// Set the timeout in milliseconds until a connection is established.
HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);// Set the default socket timeout (SO_TIMEOUT) // in milliseconds which is the timeout for waiting for data.
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
HttpClient httpclient = new DefaultHttpClient(httpParameters);
try{
HttpResponse httpResponse=httpclient.execute(httpGet);
if (httpResponse.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
String strResult=EntityUtils.toString(httpResponse.getEntity());
txtHello.setText(strResult);
mWebView.loadUrl(httpurl);
}
else{
txtHello.setText("no response");
}
}catch(IOException e){
e.printStackTrace();
}
刚开始发现在执行httpclient.execute的时候就没有了响应，程序没有继续执行，也没有报告错误，后来一查，需要加入相应的权限才可以：
<uses-permission android:name="android.permission.INTERNET" />
这样就可以正确的返回信息了．
接下来的问题是返回的信息中有中文，在android中显示为乱码，估计是服务器端的问题，于是在php中加入了编码：
header("Content-Type: text/html;charset=utf-8");
可以正常显示了．