struts1.x文件下传

struts1.x文件上传
jsp表单页面（upload.jsp）

<!-- form表单必须是post提交，且要配置enctype="multipart/form-data" -->   <form action="upload.do" method="post" enctype="multipart/form-data">   文件路径：<input type="file" name="file"><br>   <input type="submit" value="提交"><br>   </form>   ${msg }

import org.apache.struts.action.ActionForm;import org.apache.struts.upload.FormFile;public class UploadForm extends ActionForm {//注意类型private FormFile file;public FormFile getFile() {return file;}public void setFile(FormFile file) {this.file = file;}}

public ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {UploadForm uf = (UploadForm) form;FormFile ff = uf.getFile();System.out.println("源文件名："+ff.getFileName());System.out.println("源文件大小："+ff.getFileSize());                  //写到磁盘FileOutputStream fout = new FileOutputStream(new File("d://"+ff.getFileName()));fout.write(ff.getFileData());fout.flush();fout.close();                   //添加页面返回信息request.setAttribute("msg", "上传成功");return mapping.findForward("success");}

<form-beans>   <form-bean name="uploadForm" type="com.cao.form.UploadForm" /></form-beans><action-mappings>   <action path="/upload" type="com.cao.action.UpLoadAction" name="uploadForm" scope="request"><forward name="success" path="/upload.jsp" /></action></action-mappings><!-- 此标签可以配置上传文件的大小 --><controller maxFileSize="3M" />