基于Struts1.2的动态多文件上传

飞熊 — Fri, 25 Jun 2010 01:26:00 GMT

test.jsp

<%@ page language="java" pageEncoding="utf-8"%>

    <%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
    <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
    <%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
    <%@ taglib uri="http://jakarta.apache.org/struts/tags-tiles" prefix="tiles" %>

    <br />    multiUploadDemo<br />

2.form

我把下面2个文件放在FORM包中

UploadFile .java

package com.hb.struts.form;
import java.io.Serializable;

import org.apache.struts.upload.FormFile;

    public class UploadFile implements Serializable {
      private FormFile file;
         public FormFile getFile() {
                 System.out.println("run in uploadFile.getFile()");
                 return file;
         }
         public void setFile(FormFile file) {
                 this.file = file;
         }
    }

MultiUploadForm .java

    package com.hb.struts.form;
    import java.util.ArrayList;
    import java.util.List;

import org.apache.struts.action.ActionForm;

import com.hb.struts.UploadFile;

public class MultiUploadForm extends ActionForm {
private List myFiles;

        public MultiUploadForm(){
                myFiles = new ArrayList();
                myFiles.add(new UploadFile());
        }
        public List getMyFiles() {
                return myFiles;
        }

//注意这个方法的定义不加中间的循环是会出错的

      public UploadFile getUploadFile(int index){
                int size = myFiles.size();
                if(index>size-1){
                 for(int i=0;i                        myFiles.add(new UploadFile());
                 }
                }
                return (UploadFile)myFiles.get(index);
        }
        public void setMyFiles(List myFiles) {
                this.myFiles = myFiles;
        }

}

3.action

package com.hb.struts.action;

    import java.io.IOException;
    import java.io.PrintWriter;
    import java.util.List;

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;

    public class MultiUploadAction extends Action {
     public ActionForward execute(ActionMapping mapping, ActionForm form,
       HttpServletRequest request, HttpServletResponse response) {
      MultiUploadForm multiUploadForm = (MultiUploadForm) form;

      List myFiles = multiUploadForm.getMyFiles();
      String fileStr = "";
      for (int i = 0; i < myFiles.size(); i++) {
       UploadFile uploadFile = (UploadFile) myFiles.get(i);
       FormFile file = uploadFile.getFile();

       if (file == null) {
        System.out.println("file is null");
       } else {

        // 能运行到这里，就可以使用单个文件上传的方法进行上传了。循环而已
        System.out.println("filename>>>>>>>>>>" + file.getFileName());
        System.out.println("file size>>>>>>>>>>" + file.getFileSize());
        fileStr += "filename:::" + file.getFileName() + "file size:::"
          + file.getFileSize();

       }
      }
      // 返回文本
      try {
       response.setHeader("ContentType", "text/html;charset=gbk");
       PrintWriter out = response.getWriter();
       out.write("");
      } catch (IOException e) {
       e.printStackTrace();
      }

return null;
}

}
转自：http://hi.baidu.com/yanglu_168/blog/item/12c1382a4bc35028d42af1bd.html

飞熊 2010-06-25 09:26 发表评论

文件下载

飞熊 — Tue, 12 Jan 2010 08:11:00 GMT

文件下载：
public ActionForward execute(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  String inPutFileName = "附件2-2010年探亲路途费报销申请表.xls";
        response.reset();
        response.setContentType("application/vnd.ms-excel;charset=GBK");
        response.setHeader("Content-Disposition", "attachment;filename=" + new String(inPutFileName.getBytes("gb2312"),"ISO8859-1"));

        System.out.println("下载文件的路径：" + request.getRealPath(inPutFileName));

        //System.out.println(CustgradeinputDownLoadAction.class.getClassLoader().getResource(""));
        //打开指定文件的流信息
       // InputStream is = new FileInputStream(request.getContextPath() + "/" +inPutFileName);
        InputStream is = new FileInputStream(request.getRealPath(inPutFileName));
        //写出流信息

int data = -1;
OutputStream outputstream = response.getOutputStream();

while ( (data = is.read()) != -1)
outputstream.write(data);

        outputstream.flush();
        outputstream.close();
        is.close();

        return null;
}

飞熊 2010-01-12 16:11 发表评论

BlogJava-黑咖啡-随笔分类-上传下载

基于Struts1.2的动态多文件上传

文件下载