我使用了一个cos组件&＃xff0c;将cos.jar包拷贝到lib下

新建一个jsp页面 dcumentUpload.jsp


<%&＃64; page language&＃61;"java" contentType&＃61;"text/html; charset&＃61;UTF-8" pageEncoding&＃61;"UTF-8"%>







请上传要处理的文件&＃xff0c;过程可能需要几分钟&＃xff0c;请稍候片刻。






然后再建一个servlet来处理文件上传

package ytu.botao.servlet;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.oreilly.servlet.MultipartRequest;
import com.oreilly.servlet.multipart.DefaultFileRenamePolicy;
public class DoUploadServlet extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {process(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {process(request, response);}public void process(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html");PrintWriter out &＃61; response.getWriter();// 文件上传采用cos组件上传&＃xff0c;可更换为commons-fileupload上传&＃xff0c;文件上传后&＃xff0c;保存在upload文件夹// 获取文件上传路径String saveDirectory &＃61; getServletContext().getRealPath("/")&＃43; "resource";// 打印上传路径信息System.out.println(saveDirectory);// 每个文件最大50mint maxPostSize &＃61; 50 * 1024 * 1024;// 采用cos缺省的命名策略&＃xff0c;重名后加1,2,3...如果不加dfp重名将覆盖DefaultFileRenamePolicy dfp &＃61; new DefaultFileRenamePolicy();// response的编码为"UTF-8",同时采用缺省的文件名冲突解决策略,实现上传,如果不加dfp重名将覆盖MultipartRequest multi &＃61; new MultipartRequest(request, saveDirectory,maxPostSize, "UTF-8", dfp);// 输出反馈信息Enumeration files &＃61; multi.getFileNames();while (files.hasMoreElements()) {System.err.println("ccc");String name &＃61; (String) files.nextElement();File f &＃61; multi.getFile(name);if (f !&＃61; null) {// ----------打开文件所放文件夹 取出文件名字String fileName &＃61; multi.getFilesystemName(name);// 获取上传文件的扩展名String extName &＃61; fileName.substring(fileName.lastIndexOf(".") &＃43; 1);// 文件全路径String lastFileName &＃61; saveDirectory &＃43; "\\" &＃43; fileName;// 获取需要转换的文件名,将路径名中的&＃39;\&＃39;替换为&＃39;/&＃39;String converfilename &＃61; saveDirectory.replaceAll("\\\\", "/")&＃43; "/" &＃43; fileName;System.out.println("需要转换的文件&＃xff1a;" &＃43; converfilename);
// response.setContentType(arg0)out.print("上传完成................");}}}
}