编辑jsp页面获取文件
<html>
<head>
<base href="<%=basePath%>"> <title>My JSP 'upload.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
--> </head> <body>
<form action="upload1" method="post" enctype="Multipart/form-data">
file:<input type="file" name="upload">
<input type="submit" value="上传">
</form>
</body>
</html>
servlet上传：
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.UUID; import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
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;
@WebServlet("/upload1") public class Upload1 extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
} public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
/**
* 1、创建文件项工厂
*/ DiskFileItemFactory factory = new DiskFileItemFactory();
/**
* 2、创建解析请求 数据的ServletFileUpload对象
*/
ServletFileUpload upload = new ServletFileUpload(factory);
try {
/**
* 3、解析请求数据 返回FileItem 列表
*/
List<FileItem> list = upload.parseRequest(request);
/**
* 4、解析获取每一个FileItem 对象
*/ FileItem item = list.get(0); //验证当前FileItem 是否是表单字段 如果fales 则取到的是文件
item.isFormField();
/**
* 5、文件名及路径处理
*/
//处理文件
String filename= item.getName();
//截取文件扩展名
String extName = filename.substring(filename.lastIndexOf("."));
//生成UUID作为文件名
String newName= UUID.randomUUID().toString();
//获取服务器上自定义的存放文件的目录
String rootPath = request.getSession().getServletContext().getRealPath("/upload");
//生成完整的文件路径
String newPath = rootPath+"/"+newName+extName;
System.out.println(newPath);
/**
* 6、文件写入
*/
item.write(new File(newPath)); } catch (FileUploadException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
} }