阿里云服务器怎么发布servlet啊，，

简介： 导包 commons-fileupload-1.3.1.jar commons-io-2.2.jar import java.io.File; import java.io.FileOutputStream; import java. 导包 commons-fileupload-1.3.1.jar commons-io-2.2.jar

import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.List;

import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class UploadHandleServlet extends HttpServlet {

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	
	String savePath=this.getServletContext().getRealPath("/WEB-INF/upload/");
	File file=new File(savePath);
	if(!file.exists()&&!file.isDirectory()){
		System.out.println(savePath+"目录不存在，需要创建");
		
		//创建目录
		file.mkdirs();
	}
	
	//消息提示
	String message="";
	
	//创建DiskFileItemFactory工厂
	DiskFileItemFactory factory=new DiskFileItemFactory();
	//创建一个文件上传解析器
	ServletFileUpload upload=new ServletFileUpload(factory);
	//解决文件上传乱码问题
	upload.setHeaderEncoding("UTF-8");
	
	if(!ServletFileUpload.isMultipartContent(request)){
		//按照传统方面获取数据
		return;
	}
	
	try {
		//使用ServletFileUpload解析器解析数据，返回来的是一个List<FileItem>集合,每一个FileItem对应一个表单输出
		List<FileItem> list=upload.parseRequest(request);
	
		for (FileItem item : list) {
			
			if(item.isFormField()){
				String name=item.getFieldName();
				String value=item.getString("UTF-8");
				System.out.println(name+"="+value);
			}else{
				String filename=item.getName();
				System.out.println(filename);
				if(filename==null||filename.trim().equals("")){
					continue;
				}
				//处理获取到的上传文件的文件名的路径部分，只保留文件名部分
				filename=filename.substring(filename.lastIndexOf("\\")+1);
				//获取item文件上传输入流
				InputStream in=item.getInputStream();
				
				//创建一个文件输出流
				FileOutputStream out=new FileOutputStream(savePath+"\\"+filename);
				
				byte[] buffer=new byte[1024];
				
				int len=0;
				
				while((len=in.read(buffer))>0){
					out.write(buffer,0,len);
				}
				in.close();
				out.close();
				item.delete();
			
				message="文件上传成功";
			}
		}
	} catch (FileUploadException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	
	request.setAttribute("message", message);
	request.getRequestDispatcher("/message.jsp").forward(request, response);
	
}


protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	// TODO Auto-generated method stub
	doGet(request, response);
}

}

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