Android實現上傳檔案到伺服器執行個體詳解_Android

本執行個體實現每隔5秒上傳一次，通過伺服器端擷取手機上傳過來的檔案資訊並做相應處理；採用Android+Struts2技術。

一、Android端實現檔案上傳
1)、建立一個Android項目命名為androidUpload，目錄結構如下：

2)、建立FormFile類，用來封裝檔案資訊

package com.ljq.utils;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;/** * 上傳檔案 */public class FormFile {  /* 上傳檔案的資料 */  private byte[] data;  private InputStream inStream;  private File file;  /* 檔案名稱 */  private String filname;  /* 請求參數名稱*/  private String parameterName;  /* 內容類型 */  private String contentType = "application/octet-stream";    public FormFile(String filname, byte[] data, String parameterName, String contentType) {    this.data = data;    this.filname = filname;    this.parameterName = parameterName;    if(contentType!=null) this.contentType = contentType;  }    public FormFile(String filname, File file, String parameterName, String contentType) {    this.filname = filname;    this.parameterName = parameterName;    this.file = file;    try {      this.inStream = new FileInputStream(file);    } catch (FileNotFoundException e) {      e.printStackTrace();    }    if(contentType!=null) this.contentType = contentType;  }    public File getFile() {    return file;  }  public InputStream getInStream() {    return inStream;  }  public byte[] getData() {    return data;  }  public String getFilname() {    return filname;  }  public void setFilname(String filname) {    this.filname = filname;  }  public String getParameterName() {    return parameterName;  }  public void setParameterName(String parameterName) {    this.parameterName = parameterName;  }  public String getContentType() {    return contentType;  }  public void setContentType(String contentType) {    this.contentType = contentType;  }  }

3）、建立SocketHttpRequester類，封裝上傳檔案到伺服器代碼

package com.ljq.utils;import java.io.BufferedReader;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.InetAddress;import java.net.Socket;import java.net.URL;import java.util.Map;/** * 上傳檔案到伺服器 *  * @author Administrator * */public class SocketHttpRequester {  /**   * 直接通過HTTP協議提交資料到伺服器,實現如下面表單提交功能:   *  <FORM METHOD=POST ACTION="http://192.168.1.101:8083/upload/servlet/UploadServlet" enctype="multipart/form-data">      <INPUT TYPE="text" NAME="name">      <INPUT TYPE="text" NAME="id">      <input type="file" name="imagefile"/>      <input type="file" name="zip"/>     </FORM>   * @param path 上傳路徑(註：避免使用localhost或127.0.0.1這樣的路徑測試，因為它會指向手機模擬器，你可以使用http://www.iteye.cn或http://192.168.1.101:8083這樣的路徑測試)   * @param params 請求參數 key為參數名,value為參數值   * @param file 上傳檔案   */  public static boolean post(String path, Map<String, String> params, FormFile[] files) throws Exception{       final String BOUNDARY = "---------------------------7da2137580612"; //資料分隔線    final String endline = "--" + BOUNDARY + "--\r\n";//資料結束標誌        int fileDataLength = 0;    for(FormFile uploadFile : files){//得到檔案類型資料的總長度      StringBuilder fileExplain = new StringBuilder();       fileExplain.append("--");       fileExplain.append(BOUNDARY);       fileExplain.append("\r\n");       fileExplain.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");       fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");       fileExplain.append("\r\n");       fileDataLength += fileExplain.length();      if(uploadFile.getInStream()!=null){        fileDataLength += uploadFile.getFile().length();       }else{         fileDataLength += uploadFile.getData().length;       }    }    StringBuilder textEntity = new StringBuilder();    for (Map.Entry<String, String> entry : params.entrySet()) {//構造文本型別參數的實體資料      textEntity.append("--");      textEntity.append(BOUNDARY);      textEntity.append("\r\n");      textEntity.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n");      textEntity.append(entry.getValue());      textEntity.append("\r\n");    }    //計算傳輸給伺服器的實體資料總長度    int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length;        URL url = new URL(path);    int port = url.getPort()==-1 ? 80 : url.getPort();    Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);          OutputStream outStream = socket.getOutputStream();    //下面完成HTTP要求標頭的發送    String requestmethod = "POST "+ url.getPath()+" HTTP/1.1\r\n";    outStream.write(requestmethod.getBytes());    String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*\r\n";    outStream.write(accept.getBytes());    String language = "Accept-Language: zh-CN\r\n";    outStream.write(language.getBytes());    String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "\r\n";    outStream.write(contenttype.getBytes());    String contentlength = "Content-Length: "+ dataLength + "\r\n";    outStream.write(contentlength.getBytes());    String alive = "Connection: Keep-Alive\r\n";    outStream.write(alive.getBytes());    String host = "Host: "+ url.getHost() +":"+ port +"\r\n";    outStream.write(host.getBytes());    //寫完HTTP要求標頭後根據HTTP協議再寫一個斷行符號換行    outStream.write("\r\n".getBytes());    //把所有文本類型的實體資料發送出來    outStream.write(textEntity.toString().getBytes());          //把所有檔案類型的實體資料發送出來    for(FormFile uploadFile : files){      StringBuilder fileEntity = new StringBuilder();       fileEntity.append("--");       fileEntity.append(BOUNDARY);       fileEntity.append("\r\n");       fileEntity.append("Content-Disposition: form-data;name=\""+ uploadFile.getParameterName()+"\";filename=\""+ uploadFile.getFilname() + "\"\r\n");       fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"\r\n\r\n");       outStream.write(fileEntity.toString().getBytes());       if(uploadFile.getInStream()!=null){         byte[] buffer = new byte[1024];         int len = 0;         while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1){           outStream.write(buffer, 0, len);         }         uploadFile.getInStream().close();       }else{         outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);       }       outStream.write("\r\n".getBytes());    }    //下面發送資料結束標誌，表示資料已經結束    outStream.write(endline.getBytes());        BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));    if(reader.readLine().indexOf("200")==-1){//讀取web伺服器返回的資料，判斷請求碼是否為200，如果不是200，代表請求失敗      return false;    }    outStream.flush();    outStream.close();    reader.close();    socket.close();    return true;  }    /**   * 提交資料到伺服器   * @param path 上傳路徑(註：避免使用localhost或127.0.0.1這樣的路徑測試，因為它會指向手機模擬器，你可以使用http://www.itcast.cn或http://192.168.1.10:8080這樣的路徑測試)   * @param params 請求參數 key為參數名,value為參數值   * @param file 上傳檔案   */  public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception{    return post(path, params, new FormFile[]{file});  }}

4)、建立MainActivity類，實現每隔5秒上傳一次

package com.ljq.activity;import java.io.File;import java.util.HashMap;import java.util.Map;import android.app.Activity;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.util.Log;import com.ljq.utils.FormFile;import com.ljq.utils.SocketHttpRequester;public class MainActivity extends Activity {  private File file;  private Handler handler;  private static final String TAG="MainActivity";  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    Log.i(TAG, "onCreate");        file = new File(Environment.getExternalStorageDirectory(), "123.rmvb");    Log.i(TAG, "照片檔案是否存在："+file);    handler=new Handler();    handler.post(runnable);  }    Runnable runnable=new Runnable() {      public void run() {      Log.i(TAG, "runnable run");      uploadFile(file);      handler.postDelayed(runnable, 5000);    }    };    /**   * 上傳圖片到伺服器   *    * @param imageFile 包含路徑   */  public void uploadFile(File imageFile) {    Log.i(TAG, "upload start");    try {      String requestUrl = "http://192.168.1.101:8083/upload/upload/execute.do";      //請求普通訊息      Map<String, String> params = new HashMap<String, String>();      params.put("username", "張三");      params.put("pwd", "zhangsan");      params.put("age", "21");      params.put("fileName", imageFile.getName());      //上傳檔案      FormFile formfile = new FormFile(imageFile.getName(), imageFile, "image", "application/octet-stream");            SocketHttpRequester.post(requestUrl, params, formfile);      Log.i(TAG, "upload success");    } catch (Exception e) {      Log.i(TAG, "upload error");      e.printStackTrace();    }    Log.i(TAG, "upload end");  }}

5)、修改資訊清單檔

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"   package="com.ljq.activity"   android:versionCode="1"   android:versionName="1.0">  <application android:icon="@drawable/icon" android:label="@string/app_name">    <activity android:name=".MainActivity"         android:label="@string/app_name">      <intent-filter>        <action android:name="android.intent.action.MAIN" />        <category android:name="android.intent.category.LAUNCHER" />      </intent-filter>    </activity>  </application>  <uses-sdk android:minSdkVersion="4" />  <uses-permission android:name="android.permission.INTERNET" /> </manifest> 

啟動模擬器，運行如下：

二、伺服器端用來擷取Android端上傳過來的檔案資訊

1)、建立一個web項目命名為upload，目錄結構如下

注意：記得加入struts2 jar包，需加入的jar如下

2)、建立action類，命名為UploadAction，內容如下

package com.ljq.action;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import javax.servlet.http.HttpServletRequest;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;/** * 擷取Android端上傳過來的資訊 *  * @author Administrator * */@SuppressWarnings("serial")public class UploadAction extends ActionSupport {  // 上傳檔案域  private File image;  // 上傳檔案類型  private String imageContentType;  // 封裝上傳檔案名稱  private String imageFileName;  // 接受依賴注入的屬性  private String savePath;  @Override  public String execute() {    HttpServletRequest request=ServletActionContext.getRequest();    FileOutputStream fos = null;    FileInputStream fis = null;    try {      System.out.println("擷取Android端傳過來的普通訊息：");      System.out.println("使用者名稱："+request.getParameter("username"));      System.out.println("密碼："+request.getParameter("pwd"));      System.out.println("年齡："+request.getParameter("age"));      System.out.println("檔案名稱："+request.getParameter("fileName"));      System.out.println("擷取Android端傳過來的檔案資訊：");      System.out.println("檔案存放目錄: "+getSavePath());      System.out.println("檔案名稱: "+imageFileName);      System.out.println("檔案大小: "+image.length());      System.out.println("檔案類型: "+imageContentType);            fos = new FileOutputStream(getSavePath() + "/" + getImageFileName());      fis = new FileInputStream(getImage());      byte[] buffer = new byte[1024];      int len = 0;      while ((len = fis.read(buffer)) != -1) {        fos.write(buffer, 0, len);      }      System.out.println("檔案上傳成功");    } catch (Exception e) {      System.out.println("檔案上傳失敗");      e.printStackTrace();    } finally {      close(fos, fis);    }    return SUCCESS;  }  /**   * 檔案存放目錄   *    * @return   */  public String getSavePath() throws Exception{    return ServletActionContext.getServletContext().getRealPath(savePath);   }  public void setSavePath(String savePath) {    this.savePath = savePath;  }  public File getImage() {    return image;  }  public void setImage(File image) {    this.image = image;  }  public String getImageContentType() {    return imageContentType;  }  public void setImageContentType(String imageContentType) {    this.imageContentType = imageContentType;  }  public String getImageFileName() {    return imageFileName;  }  public void setImageFileName(String imageFileName) {    this.imageFileName = imageFileName;  }  private void close(FileOutputStream fos, FileInputStream fis) {    if (fis != null) {      try {        fis.close();        fis=null;      } catch (IOException e) {        System.out.println("FileInputStream關閉失敗");        e.printStackTrace();      }    }    if (fos != null) {      try {        fos.close();        fis=null;      } catch (IOException e) {        System.out.println("FileOutputStream關閉失敗");        e.printStackTrace();      }    }  }}

3)、配置struts.xml

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC  "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"  "http://struts.apache.org/dtds/struts-2.0.dtd"><struts>  <!-- 該屬性指定需要Struts2處理的請求尾碼，該屬性的預設值是action，即所有匹配*.action的請求都由Struts2處理。    如果使用者需要指定多個請求尾碼，則多個尾碼之間以英文逗號（,）隔開。 -->  <constant name="struts.action.extension" value="do"/>  <!-- 設定瀏覽器是否緩衝靜態內容,預設值為true(生產環境下使用),開發階段最好關閉 -->  <constant name="struts.serve.static.browserCache" value="false"/>  <!-- 當struts的設定檔修改後,系統是否自動重新載入該檔案,預設值為false(生產環境下使用),開發階段最好開啟 -->  <constant name="struts.configuration.xml.reload" value="true"/>  <!-- 開發模式下使用,這樣可以列印出更詳細的錯誤資訊 -->  <constant name="struts.devMode" value="true"/>  <!-- 預設的視圖主題 -->  <constant name="struts.ui.theme" value="simple"/>  <!--<constant name="struts.objectFactory" value="spring" />-->  <!--解決亂碼  -->  <constant name="struts.i18n.encoding" value="UTF-8"/>  <!-- 指定允許上傳的檔案最大位元組數。預設值是2097152(2M) -->  <constant name="struts.multipart.maxSize" value="22097152"/>  <!-- 設定上傳檔案的臨時檔案夾,預設使用javax.servlet.context.tempdir -->  <constant name="struts.multipart.saveDir " value="d:/tmp"/>    <package name="upload" namespace="/upload" extends="struts-default">    <action name="execute" class="com.ljq.action.UploadAction">      <!-- 動態設定savePath的屬性值 -->      <param name="savePath">/image</param>      <result name="success">/WEB-INF/page/message.jsp</result>    </action>  </package></struts>

4)、配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app 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">  <filter>    <filter-name>struts2</filter-name>    <filter-class>      org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter    </filter-class>  </filter>  <filter-mapping>    <filter-name>struts2</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>    <filter>    <filter-name>strutsCleanup</filter-name>    <filter-class>      org.apache.struts2.dispatcher.ActionContextCleanUp    </filter-class>  </filter>  <filter-mapping>    <filter-name>strutsCleanup</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>    <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

運行結構如下：

擷取Android端傳過來的普通訊息：
使用者名稱：張三
密碼：zhangsan
年齡：21
檔案名稱：123.rmvb
擷取Android端傳過來的檔案資訊：
檔案存放目錄: D:\apache-tomcat-6.0.18\webapps\upload\image
檔案名稱: 123.rmvb
檔案大小: 3962649
檔案類型: application/octet-stream
檔案上傳成功

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