我正在开发一个短信发送应用程序，出于登录目的，我想使用 POST 方法将用户名和密码从我的 Android 应用程序发送到 Web 服务器。
当我单击登录按钮时，应用程序没有响应，并且控制台打印以下消息来响应 Post 请求。
HTTP/1.1 500 内部服务器错误
虽然我的应用程序使用 GET 方法运行良好。
我无法弄清楚为什么这会导致......
整个代码在这里：
package com.vikas.httplogin;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
public class HttpLogin extends Activity {
TextView tv;
private static final String tag ="FATAL_ERROR";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
connecttoServer();
}
private void connecttoServer()
{
BufferedReader br = null;
try
{
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost("url of my site");
List<NameValuePair> params = new ArrayList<NameValuePair>(3);
params.add(new BasicNameValuePair("username","vikaspatidar"));
params.add(new BasicNameValuePair("password", "patidar"));
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(params);
request.setEntity(entity);
Log.v(tag,request.getMethod().toString());
HttpResponse response = client.execute(request);
Log.v(tag, response.getStatusLine().toString());
br = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = br.readLine()) != null) {
sb.append(line + NL);
}
br.close();
String result = sb.toString();
Log.v(tag, result);
} catch (ClientProtocolException e)
{
Log.v(tag, e.getMessage());
}
catch (IllegalStateException e) {
Log.v(tag, e.getMessage());
} catch (IOException e) {
Log.v(tag, e.getMessage());
}
}
}
这绝对看起来像服务器端错误，而不是 android 问题。查看服务器日志文件。
您设置请求参数的方式看起来很奇怪，请尝试设置如下参数：
HttpPost post = new HttpPost("url of my site");
BasicHttpParams basicHttpParams = new BasicHttpParams();
basicHttpParams.setParameter("username", "vikaspatidar");
basicHttpParams.setParameter("password", "patidar");
post.setParams(basicHttpParams);
//...
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