请问谁有文件上传或下载的jsp源代码实例。最好是不用struts的,用struts的也要。
源代码最好说明用到了哪些包,谢谢。
jsp1:
<form action="imgUpLoad2.jsp" enctype="multipart/form-data" method="post">
<input type="file" name="myfile">
<input type="submit" value="上传">
</form>
jsp2:
<%@ page contentType="text/html;charset=gb2312"%>
<jsp:useBean id="Upload" scope="page" class="imis.ImgUpload"/>
<%
Upload.doPost(request);
%>java:
package imis;
import 。。//请补充
public class ImgUpload{
//请补充
}
源代码最好说明用到了哪些包,谢谢。
jsp1:
<form action="imgUpLoad2.jsp" enctype="multipart/form-data" method="post">
<input type="file" name="myfile">
<input type="submit" value="上传">
</form>
jsp2:
<%@ page contentType="text/html;charset=gb2312"%>
<jsp:useBean id="Upload" scope="page" class="imis.ImgUpload"/>
<%
Upload.doPost(request);
%>java:
package imis;
import 。。//请补充
public class ImgUpload{
//请补充
}
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import java.io.File;
import java.io.IOException;
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 UploadServlet extends HttpServlet { private static final long serialVersionUID = 1L; private String relativePath; public void init() {
//在web.xml中配置上传目录的相对路径
relativePath = getServletConfig().getInitParameter("relativePath");
} public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
} @SuppressWarnings("unchecked")
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String realPath=getServletContext().getRealPath(relativePath);
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload uploader = new ServletFileUpload(factory);
try {
List<FileItem> fileItems = uploader.parseRequest(request); for (int i = 0; i < fileItems.size(); i++) {
FileItem fileItem = fileItems.get(i);
if (fileItem.isFormField()) {
System.out.println(fileItem.getFieldName() + "="+ fileItem.getString("UTF-8"));
} else {
if (!"".equals(fileItem.getName())&& fileItem.getName() != null) {
File file = new File(fileItem.getName());
File saveDir = new File(realPath+ File.separator, file.getName());
fileItem.write(saveDir);
response.setContentType("text/html;charset=utf-8");
response.getWriter().println("上传成功");
}
}
}
} catch (FileUploadException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}}
web.xml配置<servlet>
<servlet-name>uploadServlet</servlet-name>
<servlet-class>servlet.UploadServlet</servlet-class>
<init-param>
<param-name>relativePath</param-name>
<param-value>/attachment</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>uploadServlet</servlet-name>
<url-pattern>/uploadServlet</url-pattern>
</servlet-mapping>
或者用fileupload组件package com.qhit.servlet;import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import com.jspsmart.upload.*;public class UploadServlet extends HttpServlet { /**
* Destruction of the servlet. <br>
*/
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 {
this.doPost(request, response);
} public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
// 新建一个SmartUpload对象
SmartUpload su = new SmartUpload();
// 上传初始化
su.initialize(this.pageContext);
// 设定上传限制
// 1.限制每个上传文件的最大长度。
// su.setMaxFileSize(10000);
// 2.限制总上传数据的长度。
// su.setTotalMaxFileSize(20000);
// 3.设定允许上传的文件(通过扩展名限制),仅允许doc,txt文件。
// su.setAllowedFilesList("doc,txt");
// 4.设定禁止上传的文件(通过扩展名限制),禁止上传带有exe,bat,
//jsp,htm,html扩展名的文件和没有扩展名的文件。
// su.setDeniedFilesList("exe,bat,jsp,htm,html,,");
// 上传文件
su.upload();
// 将上传文件全部保存到指定目录
int count = su.save("/upload");
out.println(count+"个文件上传成功!<br>");
// 利用Request对象获取参数之值
out.println("TEST="+su.getRequest().getParameter("TEST")
+"<BR><BR>"); // 逐一提取上传文件信息,同时可保存文件。
for (int i=0;i<su.getFiles().getCount();i++)
{
com.jspsmart.upload.File file = su.getFiles().getFile(i);
// 若文件不存在则继续
if (file.isMissing()) continue; // 显示当前文件信息
out.println("<TABLE BORDER=1>");
out.println("<TR><TD>表单项名(FieldName)</TD><TD>"
+ file.getFieldName() + "</TD></TR>");
out.println("<TR><TD>文件长度(Size)</TD><TD>" +
file.getSize() + "</TD></TR>");
out.println("<TR><TD>文件名(FileName)</TD><TD>"
+ file.getFileName() + "</TD></TR>");
out.println("<TR><TD>文件扩展名(FileExt)</TD><TD>"
+ file.getFileExt() + "</TD></TR>");
out.println("<TR><TD>文件全名(FilePathName)</TD><TD>"
+ file.getFilePathName() + "</TD></TR>");
out.println("</TABLE><BR>"); // 将文件另存
// file.saveAs("/upload/" + myFile.getFileName());
// 另存到以WEB应用程序的根目录为文件根目录的目录下
// file.saveAs("/upload/" + myFile.getFileName(), su.SAVE_VIRTUAL);
// 另存到操作系统的根目录为文件根目录的目录下
// file.saveAs("c:\\temp\\" + myFile.getFileName(), su.SAVE_PHYSICAL);
} } public void init() throws ServletException {
}}
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
在MyEclipse软件显示无这个包,请问哪位大哥有,我qq710255169,传给我或者发邮件,谢谢