android客户端通过Get方式提交参数给服务器，使用URL和HttpURLConnection实现，以及乱码问题解决

服务器端的设置

服务器端采用Struts2来接收android端的请求，android版本为2.2.3配置如下：

1:web.xml的配置为

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
 3 
 4     <display-name>Struts Blank</display-name>
 5 
 6     <filter>
 7         <filter-name>struts2</filter-name>
 8         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
 9     </filter>
10 
11     <filter-mapping>
12         <filter-name>struts2</filter-name>
13         <url-pattern>/*</url-pattern>
14     </filter-mapping>
15 
16     <welcome-file-list>
17         <welcome-file>index.html</welcome-file>
18     </welcome-file-list>
19 
20 </web-app>

2：VideoManageAction类

 1 package com.capinfotech.android;
 2 
 3 import javax.servlet.http.HttpServletRequest;
 4 import javax.servlet.http.HttpServletResponse;
 5 
 6 import org.apache.struts2.interceptor.ServletRequestAware;
 7 import org.apache.struts2.interceptor.ServletResponseAware;
 8 
 9 import com.opensymphony.xwork2.ActionSupport;
10 
11 public class VideoManageAction extends ActionSupport implements ServletRequestAware, ServletResponseAware {
12 
13     private HttpServletRequest request;
14     private HttpServletResponse response;
15     
16     public void setServletRequest(HttpServletRequest request) {
17         this.request = request;
18     }
19 
20     public void setServletResponse(HttpServletResponse response) {
21         this.response = response;
22     }
23     
24     public void save() {
25         String method = this.request.getMethod();  //获得requst的方法
26         String  title = null;
27         Integer timelength = null;
28         if("GET".equals(method)) {
29             title = request.getParameter("title");  //获得参数title的值
30             timelength = new Integer(request.getParameter("timelength"));  //获得参数timelength的值
31             System.out.println("title: " + title);     //输出title的值
32             System.out.println("timelength: " + timelength.intValue());    //输出timelength的值
33             
34         } else {
35             title = request.getParameter("title");
36             timelength = new Integer(request.getParameter("timelength"));
37             System.out.println("title: " + title);
38             System.out.println("timelength: " + timelength.intValue());
39         } 
40     }
41 }

3：struts.xml的配置为

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE struts PUBLIC
 3         "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
 4         "http://struts.apache.org/dtds/struts-2.0.dtd">
 5 
 6 <struts>
 7 
 8    <package name="android" namespace="/android" extends="struts-default">
 9         
10           <action name="upload" class="com.capinfotech.android.VideoManageAction" method="save" >
11                
12           </action>
13           
14     </package>
15 </struts>

android端的配置

1：androidmanifest.xml的内容

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3       package="com.capinfotech.upload"
 4       android:versionCode="1"
 5       android:versionName="1.0">
 6     <application android:icon="@drawable/icon" android:label="@string/app_name">
 7      <uses-library android:name="android.test.runner" />  
 8         <activity android:name=".MainActivity"
 9                   android:label="@string/app_name">
10             <intent-filter>
11                 <action android:name="android.intent.action.MAIN" />
12                 <category android:name="android.intent.category.LAUNCHER" />
13             </intent-filter>
14         </activity>
15 
16     </application>
17     <uses-sdk android:minSdkVersion="8" />
18      <uses-permission android:name="android.permission.INTERNET" />
19      <instrumentation android:name="android.test.InstrumentationTestRunner"  
20      android:targetPackage="com.capinfotech.upload" android:label="Tests for My App" />
21 </manifest>

2：HttpRequest类的内容

 1 package com.capinfotech.net;
 2 
 3 import java.io.IOException;
 4 import java.net.HttpURLConnection;
 5 import java.net.MalformedURLException;
 6 import java.net.URL;
 7 import java.util.Map;
 8 
 9 import android.util.Log;
10 
11 public class HttpRequest {
12     private static final String TAG = "HttpRequest";
13     public static boolean sendGetRequest(String path, Map<String, String> params) throws IOException {
14         /*
15          * http://127.0.0.1/AndroidService/android/upload?title=aaa&timelength=90的形式
16          */
17         StringBuilder sb = new StringBuilder(path);
18         sb.append('?');
19         for(Map.Entry<String, String> entry : params.entrySet()) {
20             sb.append(entry.getKey()).append('=').append(entry.getValue()).append('&');
21         }
22         sb.deleteCharAt(sb.length()-1);
23         
24         try {
25             URL url = new URL(sb.toString());
26             HttpURLConnection conn = (HttpURLConnection)url.openConnection();
27             conn.setRequestMethod("GET");    //设置方法为GET
28             conn.setReadTimeout(5 * 1000);   //设置过期时间为5秒
29             if(conn.getResponseCode() == 200) {  //如果成功返回
30                 return true;
31             } 
32         } catch (MalformedURLException e) {
33             e.printStackTrace();
34             
35             Log.e(TAG, e.toString());
36             return false;
37         }
38         return false;
39     }
40 }

3：HttpRequestTest类

 1 package com.capinfotech.test;
 2 
 3 import java.io.IOException;
 4 import java.util.HashMap;
 5 import java.util.Map;
 6 
 7 import android.test.AndroidTestCase;
 8 import android.util.Log;
 9 
10 import com.capinfotech.net.HttpRequest;
11 
12 public class HttpRequestTest extends AndroidTestCase {
13     private static final String TAG = "HttpRequestTest";
14 
15     public void testSendGetRequest() throws IOException {
16         Map<String, String> params = new HashMap<String, String>();
17         params.put("title", "long");
18         params.put("timelength", "80");
19         
20         String path = "http://192.168.1.105/AndroidService/android/upload";
21         if(HttpRequest.sendGetRequest(path, params)) {
22             Log.i(TAG, "success");
23         } else {
24             Log.i(TAG, "failure");
25         }
26     }
27 }

4：测试结果页面

上传的参数中含有中文时

改变方法testSendGetRequest()方法里的几行程序：

1 Map<String, String> params = new HashMap<String, String>();
2         params.put("title", "变形金刚3");
3         params.put("timelength", "80");

测试结果页面为：

需要修改的程序：

1：HttpRequest类修改为：

 1 package com.capinfotech.net;
 2 
 3 import java.io.IOException;
 4 import java.net.HttpURLConnection;
 5 import java.net.MalformedURLException;
 6 import java.net.URL;
 7 import java.net.URLEncoder;
 8 import java.util.Map;
 9 
10 import android.util.Log;
11 
12 public class HttpRequest {
13     private static final String TAG = "HttpRequest";
14     public static boolean sendGetRequest(String path, Map<String, String> params, String enc) throws IOException {
15         
16         /*
17          * http://127.0.0.1/AndroidService/android/upload?title=aaa&timelength=90的形式
18          */
19         StringBuilder sb = new StringBuilder(path);
20         sb.append('?');
21         for(Map.Entry<String, String> entry : params.entrySet()) {
22             sb.append(entry.getKey()).append('=').append(URLEncoder.encode(entry.getValue(), enc)).append('&');  
23         }
24         sb.deleteCharAt(sb.length()-1);
25         
26         try {
27             URL url = new URL(sb.toString());
28             HttpURLConnection conn = (HttpURLConnection)url.openConnection();
29             conn.setRequestMethod("GET");    //设置方法为GET
30             conn.setReadTimeout(5 * 1000);   //设置过期时间为5秒
31             if(conn.getResponseCode() == 200) {  //如果成功返回
32                 return true;
33             } 
34         } catch (MalformedURLException e) {
35             e.printStackTrace();
36             
37             Log.e(TAG, e.toString());
38             return false;
39         }
40         return false;
41     }
42 }

主要是在函数中添加了一个表示编码的参数enc，用来控制编码的格式问题

2：HttpRequest类修改为

 1 public class HttpRequestTest extends AndroidTestCase {
 2     private static final String TAG = "HttpRequestTest";
 3 
 4     public void testSendGetRequest() throws IOException {
 5         Map<String, String> params = new HashMap<String, String>();
 6         params.put("title", "变形金刚3");
 7         params.put("timelength", "80");
 8         
 9         String path = "http://192.168.1.105/AndroidService/android/upload";
10         if(HttpRequest.sendGetRequest(path, params, "UTF-8")) {
11             Log.i(TAG, "success");
12         } else {
13             Log.i(TAG, "failure");
14         }
15     }
16 }

3：测试结果：

这时发现在tomcat控制台输出的参数还是乱码的，之后的工作就是修改服务器的程序

4：VideoManageAction类的内容改为

 1 package com.capinfotech.android;
 2 
 3 import java.io.UnsupportedEncodingException;
 4 
 5 import javax.servlet.http.HttpServletRequest;
 6 import javax.servlet.http.HttpServletResponse;
 7 
 8 import org.apache.struts2.interceptor.ServletRequestAware;
 9 import org.apache.struts2.interceptor.ServletResponseAware;
10 
11 import com.opensymphony.xwork2.ActionSupport;
12 
13 public class VideoManageAction extends ActionSupport implements ServletRequestAware, ServletResponseAware {
14 
15     private HttpServletRequest request;
16     private HttpServletResponse response;
17     
18     public void setServletRequest(HttpServletRequest request) {
19         this.request = request;
20     }
21 
22     public void setServletResponse(HttpServletResponse response) {
23         this.response = response;
24     }
25     
26     public void save() {
27         String method = this.request.getMethod();  //获得requst的方法
28         String  title = null;
29         Integer timelength = null;
30         try {
31         if("GET".equals(method)) {
32                 byte[] titleByte = request.getParameter("title").getBytes("iso-8859-1");  //获得title参数对应的二进制数据
33                 title = new String(titleByte, "UTF-8");
34                 timelength = new Integer(request.getParameter("timelength"));  //获得参数timelength的值
35                 System.out.println("title: " + title);     //输出title的值
36                 System.out.println("timelength: " + timelength.intValue());    //输出timelength的值
37             } else {
38                 title = request.getParameter("title");
39                 timelength = new Integer(request.getParameter("timelength"));
40                 System.out.println("title: " + title);
41                 System.out.println("timelength: " + timelength.intValue());
42             } 
43         } catch (UnsupportedEncodingException e) {
44                 e.printStackTrace();
45             }  
46     }
47     
48 }

5：测试结果

6：乱码问题总结造成中文乱码的原因有两个：首先，并没有对URL发送的参数进行编码，然后就是服务器端接受参数的问题，Tomcat服务器接收参数时默认为ISO-8859-1，这个编码并不包含中文的编码

android端的程序

1:strings.xml里的内容，定义用到的字符串资源

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <resources>
 3     <string name="hello">Hello World, MainActivity!</string>
 4     <string name="app_name">上传数据到服务器</string>
 5     <string name="title">视频名称</string>
 6     <string name="timelength">时长</string>
 7     <string name="button">保存</string>
 8     <string name="success">保存成功</string>
 9     <string name="error">保存失败</string>
10 </resources>

2：main.xml的内容，定义布局文件

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical"
 4     android:layout_width="fill_parent"
 5     android:layout_height="fill_parent"
 6     >
 7 <TextView  
 8     android:layout_width="fill_parent" 
 9     android:layout_height="wrap_content" 
10     android:text="@string/title"
11     />
12 <EditText
13     android:layout_width="fill_parent" 
14     android:layout_height="wrap_content" 
15     android:id="@+id/title"
16     />
17 
18 <TextView  
19     android:layout_width="fill_parent" 
20     android:layout_height="wrap_content" 
21     android:text="@string/timelength"
22     />
23 <EditText
24     android:layout_width="fill_parent" 
25     android:layout_height="wrap_content" 
26     android:id="@+id/timelength"
27     />
28 <Button
29     android:layout_width="wrap_content" 
30     android:layout_height="wrap_content" 
31     android:id="@+id/button"
32     android:text="@string/button"
33 />
34 </LinearLayout>

3：MainActivity的内容

 1 package com.capinfotech.upload;
 2 
 3 import java.io.IOException;
 4 import java.util.HashMap;
 5 import java.util.Map;
 6 
 7 import com.capinfotech.net.HttpRequest;
 8 
 9 import android.app.Activity;
10 import android.os.Bundle;
11 import android.util.Log;
12 import android.view.View;
13 import android.widget.Button;
14 import android.widget.EditText;
15 import android.widget.Toast;
16 
17 public class MainActivity extends Activity {
18     private static final String TAG = "MainActivity";
19     
20     private EditText titleEditText = null;
21     private EditText timeEditText = null;
22     private Button button = null;
23     
24     @Override
25     public void onCreate(Bundle savedInstanceState) {
26         super.onCreate(savedInstanceState);
27         setContentView(R.layout.main);
28         
29         titleEditText = (EditText)findViewById(R.id.title);
30         timeEditText = (EditText)findViewById(R.id.timelength);
31         button = (Button)findViewById(R.id.button);
32         
33         button.setOnClickListener(new View.OnClickListener() {
34             
35             @Override
36             public void onClick(View v) {
37                 Map<String, String> params = new HashMap<String, String>();
38                 params.put("title", titleEditText.getText().toString());   //获取输入的视频的名字
39                 params.put("timelength", timeEditText.getText().toString());   //获取输入的视频的时长
40                 
41                 String path = "http://192.168.1.105/AndroidService/android/upload";  //路径
42                 try {
43                     if(HttpRequest.sendGetRequest(path, params, "UTF-8")) {
44                         Log.i(TAG, "success");
45                         Toast.makeText(MainActivity.this, R.string.success, Toast.LENGTH_LONG).show(); //提示保存成功
46                     } else {
47                         Log.i(TAG, "failure");
48                         Toast.makeText(MainActivity.this, R.string.error, Toast.LENGTH_LONG).show(); //提示保存失败
49                     }
50                 } catch (IOException e) {
51                     Log.i(TAG, "failure");
52                     Toast.makeText(MainActivity.this, R.string.error, Toast.LENGTH_LONG).show();
53                 }
54             }
55         });
56     }
57 }

4：程序界面与运行效果

原文地址:http://blog.csdn.net/woshisap/article/details/6623284

posted @ 2013-07-20 22:17 Agrimony 阅读(328) 评论(0) 收藏举报

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android客户端通过Get方式提交参数给服务器，使用URL和HttpURLConnection实现，以及乱码问题解决

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