服务端和安卓端主要是通过json来进行数据的交互
废话不多说，大家一起来看安卓端的源码，里面的备注都很详细：
[代码]xml代码：
package com.example.jsonandroid; import java.io.IOException; import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.json.JSONException;import org.json.JSONObject; import android.app.Activity;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.content.DialogInterface;import android.os.Bundle;import android.os.StrictMode;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.EditText; public class MainActivity extends Activity { /** Called when the activity is first created. */ //模拟器自己把自己当成localhost了，服务器应该为10.0.2.2 private static String url="http://10.0.2.2:8080/JsonWeb/login.action?"; private final String url_constant="http://10.0.2.2:8080/JsonWeb/login.action?"; private EditText txUserName; private EditText txPassword; private Button btnLogin; @Override public void onCreate(Bundle savedInstanceState) { ///在Android2.2以后必须添加以下代码 //本应用采用的Android4.0 //设置线程的策略 StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() .detectDiskReads() .detectDiskWrites() .detectNetwork() // or .detectAll() for all detectable problems .penaltyLog() .build()); //设置虚拟机的策略 StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder() .detectLeakedSqlLiteObjects() //.detectLeakedClosableObjects() .penaltyLog() .penaltyDeath() .build()); super.onCreate(savedInstanceState); //设置页面布局 setContentView(R.layout.main); //设置初始化视图 initView(); //设置事件监听器方法 setListener(); } /** * 创建初始化视图的方法 */ private void initView() { btnLogin=(Button)findViewById(R.id.btnLogin); txUserName=(EditText)findViewById(R.id.UserName); txPassword=(EditText)findViewById(R.id.textPasswd); } /** * 设置事件的监听器的方法 */ private void setListener() { btnLogin.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String userName=txUserName.getText().toString(); Log.v("userName = ", userName); String password=txPassword.getText().toString(); Log.v("passwd = ",password); loginRemoteService(userName,password); } }); } /** * 获取Struts2 Http 登录的请求信息 * @param userName * @param password */ public void loginRemoteService(String userName,String password){ String result=null; try { //创建一个HttpClient对象 HttpClient httpclient = new DefaultHttpClient(); //远程登录URL //下面这句是原有的 //processURL=processURL+"userName="+userName+"&password="+password; url= url_constant+"userName="+userName+"&password="+password; Log.d("远程URL", url); //创建HttpGet对象 HttpGet request=new HttpGet(url); //请求信息类型MIME每种响应类型的输出（普通文本、html 和 XML，json）。允许的响应类型应当匹配资源类中生成的 MIME 类型 //资源类生成的 MIME 类型应当匹配一种可接受的 MIME 类型。如果生成的 MIME 类型和可接受的 MIME 类型不 匹配，那么将 //生成 com.sun.jersey.api.client.UniformInterfaceException。例如，将可接受的 MIME 类型设置为 text/xml，而将 //生成的 MIME 类型设置为 application/xml。将生成 UniformInterfaceException。 request.addHeader("Accept","text/json"); //获取响应的结果 HttpResponse response =httpclient.execute(request); //获取HttpEntity HttpEntity entity=response.getEntity(); //获取响应的结果信息 String json =EntityUtils.toString(entity,"UTF-8"); //JSON的解析过程 if(json!=null){ JSONObject jsonObject=new JSONObject(json); result=jsonObject.get("message").toString(); } if(result==null){ json="登录失败请重新登录"; } //创建提示框提醒是否登录成功 AlertDialog.Builder builder=new Builder(MainActivity.this); builder.setTitle("提示") .setMessage(result) .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }).create().show(); } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } |
界面布局省略。
服务端是采用struts2框架，源码如下：
action文件：
[代码]xml代码：
package com.dongzi.action; import java.util.HashMap;import java.util.Map; import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse; import org.apache.struts2.interceptor.ServletRequestAware;import org.apache.struts2.interceptor.ServletResponseAware; import com.opensymphony.xwork2.ActionSupport; import com.dongzi.daoimp.UserDaoImp; public class loginAction extends ActionSupport implements ServletRequestAware,ServletResponseAware {/*** */private static final long serialVersionUID = 1L; HttpServletRequest request;HttpServletResponse response; public void setServletRequest(HttpServletRequest request) {this.request=request;} public void setServletResponse(HttpServletResponse response) {this.response=response;} public void login(){ try { this.response.setContentType("text/html;charset=utf-8");this.response.setCharacterEncoding("UTF-8"); Map<String,String> json=new HashMap<String,String>(); String username=this.request.getParameter("userName");String password=this.request.getParameter("password");UserDaoImp userDaoImp=new UserDaoImp();boolean b=userDaoImp.login(username,password);if (b) { json.put("message", "登录成功！");}else { json.put("message","登录失败！");} byte[] jsonBytes = json.toString().getBytes("utf-8");response.setContentLength(jsonBytes.length);response.getOutputStream().write(jsonBytes);response.getOutputStream().flush();response.getOutputStream().close();} catch (Exception e) { e.printStackTrace();} }} |
bean文件：
[代码]xml代码：
package com.dongzi.bean; public class User { private String userName; private String password; //private String sex; //private String age; //private String photo; public String getUsername() { return userName; } public void setUsername(String userName) { this.userName = userName; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } //public String getSex() { // return sex; //} //public void setSex(String sex) { // this.sex = sex; //} //public String getAge() { // return age; //} //public void setAge(String age) { // this.age = age; //} //public String getPhoto() { // return photo; //} //public void setPhoto(String photo) { // this.photo = photo; //} //public User(String username, String password, String sex,String age, String photo) { public User(String userName, String password) { super(); this.userName = userName; this.password = password; //this.sex = sex; //this.age = age; //this.photo = photo; } public User() { super(); // TODO Auto-generated constructor stub } } |
daoimp文件：
[代码]xml代码：
package com.dongzi.daoimp; import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException; import com.dongzi.db.GetConn; public class UserDaoImp { public boolean login(String username,String password) { boolean b = false; GetConn getConn=new GetConn(); ResultSet rs = null; Connection conn=getConn.getConnection(); try { PreparedStatement ps=conn.prepareStatement("select * from usermsg where username=? and password=?"); ps.setString(1,username); ps.setString(2,password); rs=ps.executeQuery(); if (rs.next()) { b=true; } else { b=false; } } catch (SQLException e) { e.printStackTrace(); } return b; } } |
db文件：
[代码]xml代码：
package com.dongzi.db; import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException; public class GetConn { public Connection getConnection() { Connection connection = null; try { Class.forName("com.mysql.jdbc.Driver"); connection=DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/此处填DB名","DB帐号","DB密码"); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); } return connection; } public void closeconn(Connection connection) { try { connection.close(); } catch (SQLException e) { e.printStackTrace(); } }} |
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