最近在寫webservice介面 給客戶端提供資料和接收客戶端發來的資料。當資料型別為圖片型別的檔案時候，先把檔案轉為流，然後用Base64編碼成位元組流的字串，傳輸的還是字串。

客戶端程式碼：

	
	public static void main(String[] args) throws IOException {
		 File file=new File("d:/272.jpg");
	     FileInputStream fis = new FileInputStream(file);
	     ByteArrayOutputStream baos = new ByteArrayOutputStream();  
	     byte[] buffer = new byte[1024];  
         int count = 0;  
         while((count = fis.read(buffer)) >= 0){  
             baos.write(buffer, 0, count);  
         }  
         String uploadBuffer = new String(Base64.encode(baos.toByteArray()));  //進行Base64編碼  
         fis.close();  
         writeSmilFile(uploadBuffer);
		System.out.println("uploadBuffer:"+uploadBuffer);
	}
	
	//寫到txt
	public static void writeSmilFile(String content) {
		File file1 = new File( "d:/123.txt");
		try {
			file1.createNewFile();
		} catch (IOException e) {
			e.printStackTrace();
		}
		PrintWriter pw;
		try {
			 OutputStreamWriter os = null;
			 os = new OutputStreamWriter(new FileOutputStream(file1),"UTF-8");
			  os.write(content);
		        os.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}


 

	//獲取客戶端傳來的圖片檔案 （  客戶端處理是檔案轉換為流  Base64編碼成字串）
	public String getPhotoByAndroid(String photoPath){
		
		//圖片存放路徑 放到正式需要修改
		String newFilePath="D:/";
		
		String newFileName =UUID.randomUUID().toString()+"jpg";
		 	FileOutputStream fos = null;
	        byte[] buffer;
			try {
				buffer = new BASE64Decoder().decodeBuffer(photoPath);
			 
			//對android傳過來的圖片字串進行解碼   
	        File destDir = new File(newFilePath);    
	        if(!destDir.exists()) destDir.mkdir();  
	        fos = new FileOutputStream(new File(destDir,newFileName));   //儲存圖片  
	        fos.write(buffer);  
	        fos.flush();  
	        fos.close(); 
	        } catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} 
	        System.out.println("上傳圖片成功!" + newFilePath+newFileName);   
		return newFileName;
		
	}