Android HttpPost 请求问题

Question

目前碰到一个HttpPost请求的问题，代码如下@Override
public void onClick(View v) {

NameValuePair nameValuePair1 = new BasicNameValuePair("name", "zhangsan");
NameValuePair nameValuePair2 = new BasicNameValuePair("age", "18");
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(nameValuePair1);
nameValuePairs.add(nameValuePair2);

try {
HttpEntity requestHttpEntity = new UrlEncodedFormEntity(nameValuePairs,HTTP.UTF_8);
HttpPost httpPost = new HttpPost("http://www.*.cn/test.aspx");
httpPost.setEntity(requestHttpEntity);
HttpClient httpClient = new DefaultHttpClient();

//使用Http客户端发送请求对象
try {
System.out.println("1111111111111");
httpResponse = httpClient.execute(httpPost);
System.out.println("2222222222222");
httpEntity = httpResponse.getEntity();
System.out.println("33333333333333");
System.out.println(EntityUtils.toString(httpResponse.getEntity()));
System.out.println("44444444444444");
} catch (Exception e) {
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}

}经过测试
----------------
在Android2.3、模拟器及手机上没出现问题，是可以正常输出的
----------------
在android2.2手机及模拟器，android2.1模拟器上运行到
System.out.println(EntityUtils.toString(httpResponse.getEntity()));
就卡不会立即运行了，等待很久.偶尔弹出提示应用程序无响应的提示，偶尔也会输出“44444444444444”，但System.out.println(EntityUtils.toString(httpResponse.getEntity()));内容始终输不出来，正常情况下是会有响应内容的。因此又在android2.2手机及模拟器，android2.1模拟器上做了几个测试
测试一：
如果把http://www.*.cn/test.aspx改成http://www.baidu.com,是可以正常运行的
测试二：
如果把httpPost.setEntity(requestHttpEntity); 这行注释掉，还是请求代码里的URL，也就是post请求不带请求参数，也是可以正常运行的。
请各位指点！

Answer 1

把System.out.println(EntityUtils.toString(httpResponse.getEntity()));换成
System.out.println(EntityUtils.toString(httpEntity));试试

Answer 2

EntityUtils.toString是需要从InputStream中读取数据的，是不是你的网站或网络有问题，导致一直在等待数据

Answer 3

如何走断点？ 只能看logcat吧

Answer 4

你需要在单独的线程中创建HttpPost。如果用户点击，会冻结UI。我找到一个HttpPost示例代码。
public class ConnectionManager{
    private Context context;    public ConnectionManager(Context ctx){
        this.context = ctx;
    }    public boolean networkInfo(){
        ConnectivityManager connMgr = (ConnectivityManager)this.context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
        if (networkInfo != null && networkInfo.isConnected()) {
            return true;
        } else {
            return false;
        }
    }    public void showAlert(String title,String message){
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
                this.context);        // set title
        alertDialogBuilder.setTitle(title);        // set dialog message
        alertDialogBuilder
        .setMessage(message)
        .setCancelable(false)
        .setNegativeButton("OK",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {
                // if this button is clicked, just close
                // the dialog box and do nothing
                dialog.cancel();
            }
        });        // create alert dialog
        AlertDialog alertDialog = alertDialogBuilder.create();        // show it
        alertDialog.show();    }
    public String execute_get(String url) {
        // TODO Auto-generated method stub
        HttpResponse response  = null;
        String str_response = "";                       if(networkInfo()){
            DefaultHttpClient httpsClient = getHTTPSClient();            try {
                HttpGet httpget = new HttpGet(url);
                response = httpsClient.execute(httpget);
                if (response != null) {
                    str_response = EntityUtils.toString(response.getEntity());
                    Log.d("Connection Manager","Response: "+str_response);
                }
            }catch(Exception e){
                e.printStackTrace();
            }
        }else{
            showAlert("Connection Error","Please connect to wifi/3g to continue");
        }        return str_response;
    }    public DefaultHttpClient getHTTPSClient() {
        SchemeRegistry schemeRegistry = new SchemeRegistry();
        schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));        HttpParams params = new BasicHttpParams();
        params.setParameter(ConnManagerPNames.MAX_TOTAL_CONNECTIONS, 30);
        params.setParameter(ConnManagerPNames.MAX_CONNECTIONS_PER_ROUTE, new ConnPerRouteBean(30));
        params.setParameter(HttpProtocolParams.USE_EXPECT_CONTINUE, false);
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);        ClientConnectionManager cm = new SingleClientConnManager(params, schemeRegistry);
        DefaultHttpClient httpsClient= new DefaultHttpClient(cm, params);
        return httpsClient;
    }    public String execute_post(String url,String request){
        HttpResponse response  = null;
        String str_response = "";               
        if(networkInfo()){
            DefaultHttpClient httpsClient = getHTTPSClient();            try {
                HttpPost httppost = new HttpPost(url);                List<BasicNameValuePair> nameValuePairs = new ArrayList<BasicNameValuePair>(2);
                nameValuePairs.add(new BasicNameValuePair("jsonData", request));
                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));   
                response = httpsClient.execute(httppost);                if (response != null) {
                    str_response = EntityUtils.toString(response.getEntity());
                    Log.d("ConnectionManager", "Response: "+str_response);
                }
            }catch(Exception e){
                e.printStackTrace();
            }
        }else{
            showAlert("Connection Error","Please connect to wifi/3g to continue");
        }
        return str_response;
    }   
}
// Use the above like this                               new Thread() {
                    @Override
                    public void run() {
                        try {
                            String input = "Your post data"
                            Log.d("POSTDATA",input);
                            String response = execute_post(URLS.LOGIN_AUTH,input);                            Message responseMsg = new Message();
                            Bundle b = new Bundle();
                            b.putString("response", response);
                            responseMsg.setData(b);                            handler.sendMessage(responseMsg);
                        }catch(Exception e){                        }
                    }
                }.start(); 

Answer 5

目前确实用的子线程在走 new Thread(){
         public void run() {具体代码实现。