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Android上傳文件至服務(wù)器


轉載原文:http://www.cnblogs.com/linjiqin/archive/2011/11/09/2242579.html

本實(shí)例實(shí)現每隔5秒上傳一次,通過(guò)服務(wù)器端獲取手機上傳過(guò)來(lái)的文件信息并做相應處理;采用Android+Struts2技術(shù)。

          

一、Android端實(shí)現文件上傳

1)、新建一個(gè)Android項目命名為androidUpload,目錄結構如下:

         

2)、新建FormFile類(lèi),用來(lái)封裝文件信息

package com.ljq.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;

/**
* 上傳文件
*/
public class FormFile {
/* 上傳文件的數據 */
private byte[] data;
private InputStream inStream;
private File file;
/* 文件名稱(chēng) */
private String filname;
/* 請求參數名稱(chēng)*/
private String parameterName;
/* 內容類(lèi)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)、新建SocketHttpRequester類(lèi),封裝上傳文件到服務(wù)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;

/**
* 上傳文件到服務(wù)器
*
*
@author Administrator
*
*/
public class SocketHttpRequester {
/**
* 直接通過(guò)HTTP協(xié)議提交數據到服務(wù)器,實(shí)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(注:避免使用localhost或127.0.0.1這樣的路徑測試,因為它會(huì )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 上傳文件
*/
public static boolean post(String path, Map<String, String> params, FormFile[] files) throws Exception{
final String BOUNDARY = "---------------------------7da2137580612"; //數據分隔線(xiàn)
final String endline = "--" + BOUNDARY + "--\r\n";//數據結束標志

int fileDataLength = 0;
for(FormFile uploadFile : files){//得到文件類(lèi)型數據的總長(cháng)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()) {//構造文本類(lèi)型參數的實(shí)體數據
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");
}
//計算傳輸給服務(wù)器的實(shí)體數據總長(cháng)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請求頭的發(fā)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(xiě)完HTTP請求頭后根據HTTP協(xié)議再寫(xiě)一個(gè)回車(chē)換行
outStream.write("\r\n".getBytes());
//把所有文本類(lèi)型的實(shí)體數據發(fā)送出來(lái)
outStream.write(textEntity.toString().getBytes());
//把所有文件類(lèi)型的實(shí)體數據發(fā)送出來(lái)
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(fā)送數據結束標志,表示數據已經(jīng)結束
outStream.write(endline.getBytes());

BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
if(reader.readLine().indexOf("200")==-1){//讀取web服務(wù)器返回的數據,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;
}

/**
* 提交數據到服務(wù)器
*
@param path 上傳路徑(注:避免使用localhost或127.0.0.1這樣的路徑測試,因為它會(huì )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 上傳文件
*/
public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception{
return post(path, params, new FormFile[]{file});
}
}

        

4)、新建MainActivity類(lèi),實(shí)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, "照片文件是否存在:"+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);
}

};

/**
* 上傳圖片到服務(wù)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";
//請求普通信息
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());
//上傳文件
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)、修改清單文件

<?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(dòng)模擬器,運行如下:

               

        

二、服務(wù)器端用來(lái)獲取Android端上傳過(guò)來(lái)的文件信息

1)、新建一個(gè)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)、新建action類(lèi),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;

/**
* 獲取Android端上傳過(guò)來(lái)的信息
*
*
@author Administrator
*
*/
@SuppressWarnings("serial")
public class UploadAction extends ActionSupport {
// 上傳文件域
private File image;
// 上傳文件類(lèi)型
private String imageContentType;
// 封裝上傳文件名
private String imageFileName;
// 接受依賴(lài)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("獲取Android端傳過(guò)來(lái)的普通信息:");
System.out.println("用戶(hù)名:"+request.getParameter("username"));
System.out.println("密碼:"+request.getParameter("pwd"));
System.out.println("年齡:"+request.getParameter("age"));
System.out.println("文件名:"+request.getParameter("fileName"));
System.out.println("獲取Android端傳過(guò)來(lái)的文件信息:");
System.out.println("文件存放目錄: "+getSavePath());
System.out.println("文件名稱(chēng): "+imageFileName);
System.out.println("文件大小: "+image.length());
System.out.println("文件類(lèi)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("文件上傳成功");
} catch (Exception e) {
System.out.println("文件上傳失敗");
e.printStackTrace();
} finally {
close(fos, fis);
}
return SUCCESS;
}

/**
* 文件存放目錄
*
*
@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(guān)閉失敗");
e.printStackTrace();
}
}
if (fos != null) {
try {
fos.close();
fis=null;
} catch (IOException e) {
System.out.println("FileOutputStream關(guān)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處理的請求后綴,該屬性的默認值是action,即所有匹配*.action的請求都由Struts2處理。
如果用戶(hù)需要指定多個(gè)請求后綴,則多個(gè)后綴之間以英文逗號(,)隔開(kāi)。
-->
<constant name="struts.action.extension" value="do"/>
<!-- 設置瀏覽器是否緩存靜態(tài)內容,默認值為true(生產(chǎn)環(huán)境下使用),開(kāi)發(fā)階段最好關(guān)閉 -->
<constant name="struts.serve.static.browserCache" value="false"/>
<!-- 當struts的配置文件修改后,系統是否自動(dòng)重新加載該文件,默認值為false(生產(chǎn)環(huán)境下使用),開(kāi)發(fā)階段最好打開(kāi) -->
<constant name="struts.configuration.xml.reload" value="true"/>
<!-- 開(kāi)發(fā)模式下使用,這樣可以打印出更詳細的錯誤信息 -->
<constant name="struts.devMode" value="true"/>
<!-- 默認的視圖主題 -->
<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"/>
<!-- 指定允許上傳的文件最大字節數。默認值是2097152(2M) -->
<constant name="struts.multipart.maxSize" value="22097152"/>
<!-- 設置上傳文件的臨時(shí)文件夾,默認使用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(dòng)態(tài)設置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:

獲取Android端傳過(guò)來(lái)的普通信息:
用戶(hù)名:張三
密碼:zhangsan
年齡:21
文件名:123.rmvb
獲取Android端傳過(guò)來(lái)的文件信息:
文件存放目錄: D:\apache-tomcat-6.0.18\webapps\upload\image
文件名稱(chēng): 123.rmvb
文件大小: 3962649
文件類(lèi)型: application/octet-stream
文件上傳成功

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