用commons-fileupload进行文件上传,对于不同的系统有略微的差别
将得到的FileItem进行迭代,通过getName方式可以得到文件的文件名,但有如下问题需要注意
XP系统传输过来,得到的getName是全路径+文件名+后缀名,如:
C:\Documents and Settings\Administrator\My Documents\My Music\god.mp3
WIN7系统传输过来,得到的getName只是文件名+后缀名。如:
god.mp3
服务器是WIN7
一个小知识点,算是写下来,留个印象。
下面贴上源码
package com.cug.action;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
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.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class UploadAction extends HttpServlet {
public UploadAction() {
super();
}
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
List items = upload.parseRequest(request);
Iterator iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) { //是表单域
} else {
String fileName = item.getName();
System.out.println("fileName "+fileName);
if(fileName.indexOf("\\")!=-1){
int i = fileName.lastIndexOf("\\");
fileName = fileName.substring(i);
}
System.out.println("fileName "+fileName);
String path = this.getServletContext().getRealPath("\\upload");
System.out.println("path+fileName "+path+fileName);
File file = new File(path+"\\"+fileName);
try {
item.write(file);
} catch (Exception e) {
e.printStackTrace();
}
}
}
} catch (FileUploadException e) {
e.printStackTrace();
}
}
public void init() throws ServletException {
// Put your code here
}
}
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