Struts2上传下载(转)(二)

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Struts 2

Struts JSP Tomcat OS Apache

文件上传：

1,upload.jsp如下:

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>

<title>My JSP 'upload.jsp' starting page</title>

<script type ="text/javascript">

   function onMore(){
    var td =document.getElementById("more");
    var br = document.createElement("br");
    var input = document.createElement("input");
    var button = document.createElement("input");

    input.type = "file";
    input.name="file";
    button.type="button";
    button.value="删除";
    //当点击删除时，删除一行。
    button.onclick = function(){

     td.removeChild(br);
     td.removeChild(input);
     td.removeChild(button);
    }

    // 下面三句增加一行。
    td.appendChild(br);
    td.appendChild(input);
    td.appendChild(button);
   }

   </script>

</head>

2.struts.xml配置：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<constant name="struts.custom.i18n.resources" value="message"></constant>
   
   <constant name="struts.i18n.encoding" value="gbk"></constant>
   
   <constant name="struts.multipart.saveDir" value="c:\"></constant>

<action name="upload" class = "com.struct2.test.UploadAction">
     <result name = "success">/UpLoad/uploadresult.jsp</result>
     <result name = "input">/UpLoad/upload.jsp</result>
     <interceptor-ref name="fileUpload">
      
      <param name="maximumSize">409600</param>
      
      <param name="allowedTypes">text/html</param>
     </interceptor-ref>
     <interceptor-ref name="defaultStack"></interceptor-ref>
    </action>

</package>

3.UploadAction.jsp：

package com.struct2.test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class UploadAction extends ActionSupport {

private String username;
private String password;
private List<File> file;
private List<String> fileFileName;//文件名+FileName
private List<String> fileContentType;//文件名+ContentType
public String getUsername() {
   return username;
}
public void setUsername(String username) {
   this.username = username;
}
public String getPassword() {
   return password;
}
public void setPassword(String password) {
   this.password = password;
}
public List<File> getFile() {
   return file;
}
public void setFile(List<File> file) {
   this.file = file;
}
public List<String> getFileFileName() {
   return fileFileName;
}
public void setFileFileName(List<String> fileFileName) {
   this.fileFileName = fileFileName;
}
public List<String> getFileContentType() {
   return fileContentType;
}
public void setFileContentType(List<String> fileContentType) {
   this.fileContentType = fileContentType;
}

@Override
public String execute() throws Exception {
   for(int i = 0 ;i<file.size();++i){
    System.out.println(file.get(i));
    if(!file.get(i).exists())
    {return INPUT;}
    //拿到上传的文件
    InputStream is = new FileInputStream(file.get(i));
    //设置文件存储位置.
    String root = ServletActionContext.getRequest().getRealPath("/UpLoad");
    File destFile = new File(root,this.getFileFileName().get(i));
    //将上传得到的文件输出.
    OutputStream os = new FileOutputStream(destFile);
    byte[] buffer = new byte[400];
    int length = 0;
    while((length=is.read(buffer))>0){
     os.write(buffer,0,length);
    }
    is.close();
    os.close();
   }
   return SUCCESS;
}
}
</struts>

4.uploadresult.jsp

...............................

<body>
      username:<s:property value="username"/><br>
      password:<s:property value = "password"/><br>
      file:<s:property value = "fileFileName"/>
</body>

文件下载：

1.download.jsp:

2.struts.xml中配置：

<action name="download" class = "com.struct2.test.DownloadAction">
     <result name = "success" type = "stream">
     
      <param name="contentDisposition">attachment;filename=${fileName}</param>
      
      <param name="inputName">downloadFile</param>
      
      <param name="contentType">text/html</param>
      
      <param name="bufferSize">4096</param>


     </result>

3.DowmloadAction.java

package com.struct2.test;

import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class DownloadAction extends ActionSupport {
//String fileName = "";
public InputStream getDownloadFile(){

   return ServletActionContext.getServletContext().getResourceAsStream("/下载中文文件测试.html");
}

@Override
public String execute() throws Exception {
   //这里添加下载权限设置.
   return SUCCESS;
}

public String getFileName() {
        // DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
         String fileName = "下载中文文件测试.html";
       // fileName = "序列号(" + df.format(new Date()) + ").html";
         try {
             //设置下载文件名编码

     return new String(fileName.getBytes(), "ISO8859-1");
        } catch (UnsupportedEncodingException e) {
            return "impossible.txt";
        }
}

}

国际化资源文件message.properties:

xwork.default.invalid.fieldvalue={0}\u8f93\u5165\u9519\u8bef

struts.messages.error.file.too.large=File too large
struts.messages.error.content.type.not.allowed=file type not be allowed

分享到：

Struts2 blob（转） | Hibernate3 struts2 spring2 clob操作

2011-02-27 22:13
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