Android端用户登录

布满荆棘的人生 2022-08-04 12:45 117阅读 0赞

这个注册比较简单，没有对各个输入内容格式的判断。Android端注册需要的servlet和web端雷同，代码如下：

package cn.edu.hpu.android;
    
    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import cn.edu.model.competitor;
    import cn.edu.service.impl.CompetitorManager;
    import cn.edu.service.impl.CompetitorManagerImpl;
    
    public class Register extends HttpServlet {
    
    	public void doGet(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    
    		doPost(request, response);
    		
    	}
    
    	public void doPost(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    		
    		response.setContentType("text/plain");
    		request.setCharacterEncoding("UTF-8");
    		response.setCharacterEncoding("UTF-8");
    		
    		String username = request.getParameter("username");
    		String password = request.getParameter("password");
    		String realname = request.getParameter("realname");
    		//System.out.println(request.getParameter("Matchage"));
    		int Matchage = Integer.parseInt(request.getParameter("Matchage"));
    		String birth = request.getParameter("birth");
    		String address = request.getParameter("address");
    		String sex = request.getParameter("sex");		
    		//实例化
    		CompetitorManager cm = new CompetitorManagerImpl();
    		competitor c = new competitor();
    		c.setUsername(username);
    		c.setPassword(password);
    		c.setRealname(realname);
    		c.setMatchage(Matchage);
    		c.setBirth(birth);
    		c.setAddress(address);
    		c.setSex(sex);
    		
    		cm.addcompetitor(c);
    		
    		response.getOutputStream().write("success".getBytes());		
    	}
    }

Android端RegisterActivity.java

package com.example.login;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import org.apache.http.HttpResponse;
    import org.apache.http.NameValuePair;
    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 org.apache.http.protocol.HTTP;
    import org.apache.http.util.EntityUtils;
    
    import android.app.Activity;
    import android.app.ProgressDialog;
    import android.content.Intent;
    import android.os.Bundle;
    import android.os.Handler;
    import android.os.Message;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.ImageButton;
    import android.widget.Toast;
    
    @SuppressWarnings("deprecation")
    public class RegisterActivity extends Activity {
    	
    	private ImageButton back;
    	private Button ok;
    	private EditText uname, pass, rname, mage, bir, add, s;
    	private String responseMsg;
    	ProgressDialog progressDialog;
    	Handler handler;
    	String path = "http://192.168.0.49:8080/tennis_game/Register";
    	
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_register);
    		
    		this.setContentView(R.layout.activity_register);
    		
    		uname = (EditText)findViewById(R.id.username);
    		pass = (EditText)findViewById(R.id.password);
    		rname = (EditText)findViewById(R.id.realname);
    		mage = (EditText)findViewById(R.id.Matchage);
    		bir = (EditText)findViewById(R.id.birth);
    		add = (EditText)findViewById(R.id.address);
    		s = (EditText)findViewById(R.id.sex);
    		
    		ok = (Button)findViewById(R.id.ok);
    		ok.setOnClickListener(new OnClickListener() {
    			
    			@Override
    			public void onClick(View v) {
    				registerFun();
    			}
    		});
    		
    		//Handler
    		handler = new Handler() {
    			public void handleMessage(Message msg) {
    				if(msg.what == 0) {//注册成功，跳转页面
    					Toast.makeText(RegisterActivity.this, "注册成功", Toast.LENGTH_SHORT).show();
    					Intent intent = new Intent(RegisterActivity.this, ZhuYeActivity.class);
    					startActivity(intent);
    				}else {
    					progressDialog.dismiss();//.............
    					Toast.makeText(RegisterActivity.this, "注册失败", Toast.LENGTH_SHORT).show();					
    				}
    				finish();
    			}
    		};//Handler结束
    		
    		back = (ImageButton) findViewById(R.id.back);
    		back.setOnClickListener(new OnClickListener() {
    			
    			public void onClick(View v) {
    				// TODO Auto-generated method stub
    				Intent intent = new Intent(RegisterActivity.this,MainActivity.class);
    				startActivity(intent);		
    			}
    		});
    		
    	}//onCreate结束
    	//注册函数
    	public void registerFun() {
    		// TODO Auto-generated method stub
    		new Thread() {
    			public void run() {
    				String username = uname.getText().toString().trim();
    				String password = pass.getText().toString().trim();
    				String realname = rname.getText().toString().trim();
    				//因为web端Matchage为int型，所以要进行类型转换
    				int Matchage = Integer.parseInt(mage.getText().toString().trim());
    				String birth = bir.getText().toString().trim();
    				String address = add.getText().toString().trim();
    				String sex = s.getText().toString().trim();
    				//registerValidate 定义为Boolean型，表示注册是否合法
    				boolean registerValidate = registerToHost(username, password, realname, Matchage, birth, address, sex);
    				//调用Handler
    				Message msg = handler.obtainMessage();
    				if(registerValidate) {
    					if(responseMsg.equals("success")) {
    						msg.what = 0;
    						handler.sendMessage(msg);
    					}else {
    						msg.what = 1;
    						handler.sendMessage(msg);
    					}
    				}
    			}
    		}.start();
    	}//注册函数结束
    
    	//处理客户端与服务器之间的请求
    	private boolean registerToHost(String username, String password,
    			String realname, int matchage, String birth, String address,
    			String sex) {
    		
    		boolean flag = false;
    		//建立HttpPost对象
    		HttpPost httpRequest = new HttpPost(path);
    		HttpResponse httpResponse = null;
    		//建立一个NameValuePair数组，用于存储传送的参数
    		//本类位于System.Data.dll中，名为：System.Data.Common.NameValuePair。主要用途是在DBConnectionString类中，解析ConnectionString时存储并串联Name/Value对
    		List<NameValuePair> params = new ArrayList<NameValuePair>();
    		if(!username.equals("")&&!password.equals("")&&!realname.equals("")&&!(matchage==0)&&!birth.equals("")&&!address.equals("")&&!sex.equals("")){
    			//添加参数
    			params.add(new BasicNameValuePair("username", username));
    			params.add(new BasicNameValuePair("password", password));
    			params.add(new BasicNameValuePair("realname", realname));
    			String smatchage = matchage+"";
    			//System.out.println(smatchage+"jkjk");
    			params.add(new BasicNameValuePair("Matchage", smatchage));
    			params.add(new BasicNameValuePair("birth", birth));
    			params.add(new BasicNameValuePair("address", address));
    			params.add(new BasicNameValuePair("sex", sex));
    		}
    		try {
    			//设置请求参数
    			httpRequest.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
    			//发送post，并返回一个httpResponse对象
    			httpResponse = new DefaultHttpClient().execute(httpRequest);
    		
    			//处理从服务器端传来的数据
    			if(httpResponse.getStatusLine().getStatusCode() == 200){
    				flag = true;
    				System.out.println("Connection OK");
    				responseMsg  = EntityUtils.toString(httpResponse.getEntity());
    				handler.sendEmptyMessage(0);
    			}
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		return flag;
    	}
    }

xml中代码省略.......