在Android遠程上傳以及下載圖片---XFire框架
https://blog.csdn.net/haha_mingg/article/details/6347588
有時我們可以看到,圖片往往被提交到服務器端,這裏我通過XFire框架來實現遠程上傳以及下載圖片的功能。
首先我們來看看從服務器端下載圖片的功能:
我用的是KSOAP框架,我之前的文章有講述過。在這裏不要多說,貼上代碼。
首先我們看看Acitivity中的代碼:
[java] view plaincopyprint?
- package com.net.connect.app;
- import java.io.File;
- import java.io.FileInputStream;
- import android.app.Activity;
- import android.graphics.Bitmap;
- import android.graphics.BitmapFactory;
- import android.os.Bundle;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- import android.widget.ImageView;
- import android.widget.Toast;
- import com.base.encry.decry.app.Base64;
- import com.base.file.util.FileOperate;
- import com.cn.blogs.ksoap.app.MyWebServiceHelper;
- public class UpAndDownPicFileActivity extends Activity {
- ImageView imageView;
- public static final String filename = "xfire.png";
- public static final String fileDir = "/sdcard/xmlfile/";
- public MyWebServiceHelper myWebServiceHelper = new MyWebServiceHelper();
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- // TODO Auto-generated method stub
- super.onCreate(savedInstanceState);
- setContentView(R.layout.upanddownpic);
- imageView = (ImageView) this.findViewById(R.id.imageView1);
- // Bitmap
- // bitmap=BitmapFactory.decodeFile("/sdcard/xmlfile/"+"xfire.png");
- // imageView.setImageBitmap(bitmap);
- Button downButton = (Button) findViewById(R.id.downbutton);
- downButton.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- // TODO Auto-generated method stub
- myWebServiceHelper.getTranferFileString(filename);
- // 收到服務器端發送過來的圖片,然後顯現在圖片框中
- Bitmap bitmap = BitmapFactory.decodeFile(fileDir + filename);
- imageView.setImageBitmap(bitmap);
- }
- });
- Button upButton = (Button) findViewById(R.id.upbutton);
- upButton.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- // TODO Auto-generated method stub
- String fileContent = "";
- FileOperate.OpenOrCreateFile(filename);
- fileContent = FileOperate.bin2XmlString(fileDir+filename);
- // Toast.makeText(UpAndDownPicFileActivity.this, fileContent, Toast.LENGTH_LONG).show();
- String result=myWebServiceHelper.upToServerOfFileStringWithEncode(filename,
- fileContent);
- try {
- Thread.currentThread().sleep(2000);
- } catch (InterruptedException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- Toast.makeText(UpAndDownPicFileActivity.this, result, Toast.LENGTH_LONG).show();
- // 收到服務器端發送過來的圖片,然後顯現在圖片框中
- //imageView.setImageBitmap(null);
- }
- });
- }
- }
分別實現了遠程上傳和下載圖片的功能。它的處理類集中在MyWebServiceHelper,它實現了遠程獲取和上傳的細節功能。
這個功能都是通過KSOAP框架實現的。下麵貼上它的代碼,如下所示:
- // WSDL文檔中的命名空間
- private static final String targetNameSpace = "https://android.googlepages.com/";
- // WSDL文檔中的URL
- private static final String WSDL = "https://10.10.178.71:8888/WSDLApp/services/MyService";
- // 需要調用的方法名(獲得Myervices中的helloWorld方法)
- private static final String getHelloworld = "helloWorld";
- //需要調用的方法名(獲得Myervices中的login方法)
- private static final String getLogin="login";
- //獲取加密圖片的字符串
- private static final String getTranferFileStringWithEncode="tranferFileStringWithEncode";
- //獲取加密圖片的字符串
- private static final String upToServerOfFileContent="fetchFileStringWithEncode";
- public String getTranferFileString(String filename) {
- String fileContent = "";
- SoapObject soapObject = new SoapObject(targetNameSpace,getTranferFileStringWithEncode);
- SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
- envelope.dotNet = false;
- envelope.setOutputSoapObject(soapObject);
- HttpTransportSE httpTranstation=new HttpTransportSE(WSDL);
- try {
- httpTranstation.call(targetNameSpace + getTranferFileStringWithEncode, envelope);
- SoapObject result = (SoapObject ) envelope.bodyIn;//getResponse();
- fileContent=(String) result.getProperty(0).toString();
- //String strFile="downfromserive"+Math.random()+".png";
- FileOperate.OpenOrCreateFile(filename);
- FileOperate.xmlString2Bin(fileContent, new File(filename));
- // 也可以通過下麵方式獲得str
- // SoapPrimitive result = (SoapPrimitive ) envelope.getResponse();
- // str=result.toString();
- // 直指value字符串值
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- } catch (XmlPullParserException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- return fileContent;
- }
- public String upToServerOfFileStringWithEncode(String filename,String fileContent) {
- String str = "";
- SoapObject soapObject = new SoapObject(targetNameSpace,upToServerOfFileContent);
- soapObject.addProperty("filename", filename);
- soapObject.addProperty("fileContent", fileContent);
- SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
- envelope.dotNet = false;
- envelope.setOutputSoapObject(soapObject);
- HttpTransportSE httpTranstation=new HttpTransportSE(WSDL);
- try {
- httpTranstation.call(targetNameSpace + upToServerOfFileContent, envelope);
- SoapObject result = (SoapObject ) envelope.bodyIn;//getResponse();
- str=(String) result.getProperty(0).toString();
- //返回上傳成功0,1標誌位
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- return e.getMessage();
- } catch (XmlPullParserException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- return e.getMessage();
- }
- return str;
- }
在第二個函數中有:
- SoapObject soapObject = new SoapObject(targetNameSpace,upToServerOfFileContent);
- soapObject.addProperty("filename", filename);
- soapObject.addProperty("fileContent", fileContent);
這個是android客戶端傳送服務器端的參數參數。
而裏麵有個FileOperate.java類,這個類負責對文件操作。我封裝在這個類中,方便集中處理以及調用。
下麵貼上代碼。如下所示:
- package com.base.file.util;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import com.base.encry.decry.app.Base64;
- public class FileOperate {
- //在SD卡中創建文件
- public static void OpenOrCreateFile(String filename){
- // 獲取擴展SD卡設備狀態
- String sDStateString = android.os.Environment
- .getExternalStorageState();
- if (sDStateString.equals(android.os.Environment.MEDIA_MOUNTED)) {
- // String strFile="downfromserive"+Math.random()+".png";
- // 獲取擴展存儲設備的文件目錄
- File SDFile = android.os.Environment
- .getExternalStorageDirectory();
- File destDir = new File("/sdcard/xmlfile");
- // File destDir = new File(SDFile.getAbsolutePath() +
- // destDirStr);
- if (!destDir.exists())
- destDir.mkdir();
- // Toast.makeText(SDCardTest., text, duration)
- // 打開文件
- File myFile = new File(destDir + File.separator + filename);
- // 判斷是否存在,不存在則創建
- if (!myFile.exists()) {
- try {
- myFile.createNewFile();
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }
- }
- }
- //刪除指定文件,比如臨時文件
- public static void removeFile(String filename){
- if(new File(filename).exists())
- new File(filename).delete();
- }
- //解密,並將內容寫入至指定文件中
- public static boolean xmlString2Bin(String base64String, File file) {
- byte[] data;
- FileOutputStream output = null;
- boolean ret = false;
- try {
- data = Base64.decode(base64String);
- output = new FileOutputStream(file);
- output.write(data);
- output.close();
- ret = true;
- } catch (Exception e) {
- e.printStackTrace();
- }
- return ret;
- }
- //將文件內容加密
- public static String bin2XmlString(String filename) {
- byte[] data = null;
- FileInputStream input = null;
- String ret = null;
- int n;
- try {
- data = new byte[(int) new File(filename).length()];
- input = new FileInputStream(new File(filename));
- n = input.read(data);//這個就是一個文件讀取過程。沒有寫while,一次性讀完
- input.close();
- ret = new String(Base64.encode(data));
- } catch (Exception e) {
- e.printStackTrace();
- }
- return ret;
- }
- }
當然,我們還在看看這個Activity.java中的布局文件。
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="https://schemas.android.com/apk/res/android"
- android:orientation="vertical" android:layout_width="fill_parent"
- android:layout_height="fill_parent">
- <TextView android:layout_width="fill_parent"
- android:layout_height="wrap_content" android:text="@string/hello" />
- <Button android:id="@+id/downbutton" android:layout_width="fill_parent"
- android:layout_height="wrap_content" android:text="下載" />
- <Button android:id="@+id/upbutton" android:layout_width="fill_parent"
- android:layout_height="wrap_content" android:text="上傳" />
- <ImageView android:id="@+id/imageView1" android:layout_width="fill_parent"
- android:layout_height="wrap_content" />
- </LinearLayout>
而服務器端用的是XFire框架,這在之前的文章中講過。不必多說。
看下麵的代碼:
在AccountImp.java中實現IAccount.java方法。
- public String tranferFileStringWithEncode() {
- // TODO Auto-generated method stub
- return FileOperate.bin2XmlString("E://Workspaces//workspace//WSDLApp//"+"girl.png");
- }
- public String fetchFileStringWithEncode(String filename, String fileContent) {
- // TODO Auto-generated method stub
- //創建該新文件,並返回成功
- try {
- //打開並創建文件
- FileOperate.OpenOrCreateFile(filename);
- String pathFile="E://Workspaces//workspace//WSDLApp";
- //解密,並將內容添加至該文件中
- FileOperate.xmlString2Bin(fileContent, new File("E://Workspaces//workspace//WSDLApp//xfire.png"));
- return "上傳成功";
- } catch (Exception e) {
- // TODO: handle exception
- return "上傳失敗";
- }
- }
IAccount.java
- //將 POJO 發布成 Web 服務:有兩種方法,接口和實現類是其中之一
- public interface IAccount {
- public int account(int x,int y);
- public String helloWorld(String str);
- //訪問mysql數據庫
- public int login(String username,String password);
- //傳送圖片字符串
- public String tranferFileStringWithEncode();
- //接收遠程傳送過來的圖片字符串
- public String fetchFileStringWithEncode(String username,String filename);
- }
而這個XFIRE要在web.xml中注冊.
- <?xml version="1.0" encoding="UTF-8"?>
- <web-app xmlns="https://java.sun.com/xml/ns/j2ee" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="https://java.sun.com/xml/ns/j2ee https://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
- <servlet>
- <servlet-name>XFireServlet</servlet-name>
- <servlet-class>org.codehaus.xfire.transport.http.XFireConfigurableServlet</servlet-class>
- <load-on-startup>0</load-on-startup>
- </servlet>
- <servlet-mapping>
- <servlet-name>XFireServlet</servlet-name>
- <url-pattern>/services/*</url-pattern>
- </servlet-mapping>
- <welcome-file-list>
- <welcome-file>index.jsp</welcome-file>
- </welcome-file-list>
- </web-app>
這樣Web服務就用去查找services目錄下。所以還要在WebServices目錄下(在該服務器端要目錄下)創建
services.xml文件。如下所示:
- <!-- 服務一:簡單計算,直接輸出 -->
- <service>
- <name>MyService</name>
- <serviceClass>test.IAccount</serviceClass>
- <implementationClass>test.AccountImp</implementationClass>
- <mce:style><!--
- wrapped
- --></mce:style><style mce_bogus="1">wrapped</style>
- <use>literal</use>
- <scope>application</scope>
- <namespace>http://android.googlepages.com/</namespace>
- </service>
最終實現效果如下所示:
點擊上傳按鈕
點擊下載按鈕
最後更新:2017-04-04 07:03:48