下面是我的LoginActivity
package textview.exam;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import java.util.HashMap;
import java.util.Map;
public class LoginActivity extends Activity {
Button okbutton;
EditText id;
EditText pass;
String uname;
HttpClient httpClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
final ActionBar actionBar = getActionBar();
actionBar.hide();
httpClient=new DefaultHttpClient();
okbutton=(Button)findViewById(R.id.ok);
okbutton.setOnClickListener(loginokListener);
id = (EditText)findViewById(R.id.login_id);
pass = (EditText)findViewById(R.id.login_password);
Button loginback=(Button)findViewById(R.id.backlogin);
loginback.setOnClickListener(backloginListener);
}
View.OnClickListener backloginListener=new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent in = getIntent();
in.putExtra( "result","欢迎登录家友" );
LoginActivity.this.setResult(1, in);
LoginActivity.this.finish();
}
};
View.OnClickListener loginokListener=new View.OnClickListener() {
@Override
public void onClick(View v) {
// 执行输入校验
if (validate()) // ①
{
// 如果登录成功
if (loginPro()) // ②
{
Log.i("LoginServlet","1561161");
Intent in = getIntent();
in.putExtra( "result", uname );
LoginActivity.this.setResult(0, in);
LoginActivity.this.finish();
}
else
{
Toast.makeText(LoginActivity.this,
"用户名或密码错误!", Toast.LENGTH_LONG).show();
}
}
}
};
private boolean loginPro()
{
// 获取用户输入的用户名、密码
String uid = id.getText().toString();
String upass = pass.getText().toString();
try
{
uname=loginyanzheng(uid, upass);
Log.i("服务器的问题"+uname,"");
// 如果uname不为空
if (uname!=null)
{
return true;
}
}
catch (Exception e)
{
Toast.makeText(this,"服务器响应异常，请稍后重试!", Toast.LENGTH_LONG).show();
e.printStackTrace();
}
return false;
}
// 对用户输入的用户名、密码进行校验
private boolean validate()
{
String uid = id.getText().toString().trim();
if (uid.equals(""))
{
Toast.makeText(this,"账号不许为空!", Toast.LENGTH_LONG).show();
return false;
}
String upass = pass.getText().toString().trim();
if (upass.equals(""))
{
Toast.makeText(this,"请输入密码!", Toast.LENGTH_LONG).show();
return false;
}
return true;
}
// 定义发送请求的方法
private String loginyanzheng(String id, String pass) throws Exception
{
// 使用Map封装请求参数
Map<String, String> map = new HashMap<>();
map.put("id", id);
map.put("pass", pass);
Log.i("按时吃饭三coin啊搜in粗偶i","1");
// 定义发送请求的URL
String url = HttpUtil.BASE_URL+"LoginServlet";
Log.i("爱上擦擦实现擦拭小","2");
// 发送请求
return HttpUtil.postRequest(url, map);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
Intent in = getIntent();
in.putExtra( "result", "欢迎登录家友");
LoginActivity.this.setResult(1, in);
LoginActivity.this.finish();
}
return false;
}
//返回动画
protected void onPause() {
super.onPause();
overridePendingTransition(R.anim.in_from_down,
R.anim.out_to_up);
}
}
下面是我HttpUitl
package textview.exam;
import android.util.Log;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
public class HttpUtil
{
// 创建HttpClient对象
public static HttpClient httpClient = new DefaultHttpClient();
public static final String BASE_URL =
"http://192.168.1.88:8888/auction/android/";
/**
*
* @param url 发送请求的URL
* @return 服务器响应字符串
* @throws Exception
*/
public static String getRequest(final String url)
throws Exception
{
FutureTask task = new FutureTask(
new Callable()
{
@Override
public String call() throws Exception
{
// 创建HttpGet对象。
HttpGet get = new HttpGet(url);
// 发送GET请求
HttpResponse httpResponse = httpClient.execute(get);
// 如果服务器成功地返回响应
if (httpResponse.getStatusLine()
.getStatusCode() == 200)
{
// 获取服务器响应字符串
String result = EntityUtils
.toString(httpResponse.getEntity());
return result;
}
return null;
}
});
new Thread(task).start();
return task.get();
}
/**
* @param url 发送请求的URL
* @param请求参数
* @return 服务器响应字符串
* @throws Exception
*/
public static String postRequest(final String url
, final Map<String ,String> rawParams)throws Exception
{
FutureTask<String> task = new FutureTask<String>(
new Callable<String>()
{
@Override
public String call() throws Exception
{
// 创建HttpPost对象。
HttpPost post = new HttpPost(url);
// 如果传递参数个数比较多的话可以对传递的参数进行封装
List<NameValuePair> params = new ArrayList<>();
for(String key : rawParams.keySet())
{
//封装请求参数
params.add(new BasicNameValuePair(key
, rawParams.get(key)));
}
// 设置请求参数
post.setEntity(new UrlEncodedFormEntity(
params, "gbk"));
// 发送POST请求
HttpResponse httpResponse = httpClient.execute(post);
Log.i("所发生的初三大四","按时打算");
// 如果服务器成功地返回响应
if (httpResponse.getStatusLine()
.getStatusCode() == 200)
{
// 获取服务器响应字符串
String result = EntityUtils
.toString(httpResponse.getEntity());
return result;
}
Log.i("暗示法撒旦吃撒多长","按时打算");
return null;
}
});
new Thread(task).start();
return task.get();
}
}
下面是我服务端Servlet代码
package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import dao.factory.DAOFactory;
import vo.Users;
public class LoginServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=GBK");
request.setCharacterEncoding("utf-8");
Users users = new Users();
//客户端的账号以及密码
users.setUserid(request.getParameter("id"));
users.setUpwd(request.getParameter("pass"));
try {
if(DAOFactory.getUserDAOInstance().findLogin(users)){
request.getSession().setAttribute("name", users.getUname());
//request.getRequestDispatcher("index.jsp").forward(request, response);
//向客户端发送字符串
response.getWriter().println("aisd");
System.out.println("登录成功");
}
else{
response.getWriter().print("对不起，用户名、密码不符合!");
System.out.println("对不起，用户名、密码不符合!");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
