struts-文件上传

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Action:

/* * Generated by MyEclipse Struts * Template path: templates/java/JavaClass.vtl */package com.yourcompany.struts.action;import java.io.BufferedReader;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;import org.apache.struts.upload.FormFile;import com.yourcompany.struts.form.UploadForm;public class UploadAction extends Action {public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,HttpServletResponse response) {UploadForm uploadForm = (UploadForm) form;// TODO Auto-generated method stubFormFile myfile=uploadForm.getMyfile();/*//得到文件的基本信息String type=myfile.getContentType();//得到文件类型String name=myfile.getFileName();//得到文件名称,如果不选而提交，名称为空字符串int size=myfile.getFileSize();//得到文件大小System.out.println(type);System.out.println(name);System.out.println(size);*///保存文件在服务器段FileOutputStream fos=null;try {byte[] data=myfile.getFileData();//得到文件数据String fileName=myfile.getFileName();System.out.println(this.getServlet().getServletContext().getRealPath("/"));//Java如果要访问服务器硬盘，一定要提供逻辑路径（硬盘上的路径c:\..）//怎样将URL相对路径转换成硬盘上的绝对路径?用applicationServletContext application=this.getServlet().getServletContext();String realPath=application.getRealPath("/Files/");fos=new FileOutputStream(realPath+"/"+fileName);fos.write(data);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {fos.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}/*try {InputStream is=myfile.getInputStream();//得到文件的输入流，可以对文件进行分析BufferedReader br=new BufferedReader(new InputStreamReader(is));//通过BufferedReader来分析文件} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}*/return new ActionForward("/upload.jsp");}}

<%@ page language="java" pageEncoding="UTF-8"%><%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%> <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%> <html> <head><title>JSP for UploadForm form</title></head><body><html:form action="/upload" method="post" enctype="multipart/form-data">请你选择一个文件惊醒上传：<html:file property="myfile"></html:file><html:submit value="上传"/><html:cancel/></html:form></body></html>

多文件上传：

/* * Generated by MyEclipse Struts * Template path: templates/java/JavaClass.vtl */package com.yourcompany.struts.action;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.ArrayList;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;import org.apache.struts.action.ActionForm;import org.apache.struts.action.ActionForward;import org.apache.struts.action.ActionMapping;import org.apache.struts.upload.FormFile;import com.yourcompany.struts.form.UploadManyFlesForm;public class UploadManyFlesAction extends Action {public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,HttpServletResponse response) {UploadManyFlesForm uploadManyFlesForm = (UploadManyFlesForm) form;// TODO Auto-generated method stubSystem.out.println("得到myfiles");ArrayList myfiles=uploadManyFlesForm.getMyfiles();for(int a=0;a<myfiles.size();a++){System.out.println(((FormFile)myfiles.get(a)).getFileName());}//FileOutputStream fos=null;//try {//byte msg[]=myfiles.getFileData();//String dizhi=this.getServlet().getServletContext().getRealPath("/");//fos=new FileOutputStream(dizhi+"/"+myfiles.getFileName());//fos.write(msg);//} catch (Exception e) {//// TODO Auto-generated catch block//e.printStackTrace();//}finally{//try {//fos.close();//} catch (IOException e) {//// TODO Auto-generated catch block//e.printStackTrace();//}//}return new ActionForward("/uploadManyFles.jsp");}}

<%@ page language="java" pageEncoding="UTF-8"%><%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%> <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%> <html> <head><title>JSP for UploadManyFlesForm form</title></head><body><html:form action="/uploadManyFles" method="post" enctype="multipart/form-data">请你选择一个文件进行上传：<html:file property="myfile[0]"></html:file><br>请你选择一个文件进行上传：<html:file property="myfile[1]"></html:file><br>请你选择一个文件进行上传：<html:file property="myfile[2]"></html:file><br><html:submit/><html:cancel/></html:form></body></html>

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