通过GET方式传递数据给服务器

来源：互联网发布：什么软件识别歌曲编辑：程序博客网时间：2024/06/10 09:12

1.web服务端的建立

建立Dynamic Web Project，名称为ServerGET

2.新建servlet

这里写图片描述
自动生成的ServerGET.java中有
@WebServlet(“/ServerGET”)
所以web.xml就不需要配置了

3.编写ServerGET.java

package com.example.servletGet;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Servlet implementation class ServerGET */@WebServlet("/ServerGET")public class ServerGET extends HttpServlet {    private static final long serialVersionUID = 1L;    /**     * @see HttpServlet#HttpServlet()     */    public ServerGET() {        super();    }    /**     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse     *      response)     */    protected void doGet(HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException {        String name = request.getParameter("name");        String age = request.getParameter("age");        System.out.println(name + "   " + age);    }    /**     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse     *      response)     */    protected void doPost(HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException {    }}

4.测试服务端

这里写图片描述

5.建立android客户端

布局文件main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/LinearLayout1"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.example.userinformation.MainActivity" >    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="name:" />    <EditText        android:id="@+id/name"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="age:" />    <EditText        android:id="@+id/age"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <Button        android:id="@+id/button1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="save" /></LinearLayout>

这里写图片描述

MainActivity.java

package com.example.userinformation;import android.app.Activity;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.Toast;public class MainActivity extends Activity {    private EditText nameText, ageText;    private Button button;    private Handler myHandler = new Handler() {        public void handleMessage(Message msg) {            String text = "";            if (msg.what == 1) {                text = "success";            } else if (msg.what == 2){                text = "fail";            }            Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT).show();        };    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        nameText = (EditText) findViewById(R.id.name);        ageText = (EditText) findViewById(R.id.age);        button = (Button) findViewById(R.id.button1);        button.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                final String name = nameText.getText().toString();                final String age = ageText.getText().toString();                new Thread(new Runnable() {                    @Override                    public void run() {                        try {                            //将EditText中的数据传到服务器                            boolean result = UserInfoService.save(name, age);                            if (result == true) {                                myHandler.sendEmptyMessage(1);                            } else {                                myHandler.sendEmptyMessage(2);                            }                        } catch (Exception e) {                            e.printStackTrace();                        }                    }                }).start();            }        });    }}

UserInfoService.java

package com.example.userinformation;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLEncoder;import java.util.HashMap;import java.util.Map;import java.util.Map.Entry;public class UserInfoService {    public static boolean save(String name, String age) throws Exception {        String path = "http://10.107.56.64:8080/ServerGET/ServerGET";        Map<String, String> params = new HashMap<String, String>();        params.put("name", name);        params.put("age", age);        return sendGETRequest(path, params, "UTF-8");    }    private static boolean sendGETRequest(String path,            Map<String, String> params, String encoding) throws Exception {        StringBuilder sb = new StringBuilder(path);        if (params != null && !params.isEmpty()) {            sb.append("?");            for (Entry<String, String> entry : params.entrySet()) {                sb.append(entry.getKey()).append("=");                sb.append(URLEncoder.encode(entry.getValue(), encoding))                        .append("&");            }            sb.deleteCharAt(sb.length() - 1);        }        // 上面的sb用来构造url        HttpURLConnection connection = (HttpURLConnection) new URL(sb.toString())                .openConnection();        connection.setConnectTimeout(5000);        connection.setRequestMethod("GET");        if (connection.getResponseCode() == 200) {            return true;        }        return false;    }}

测试效果：
这里写图片描述

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