关于Struts2的多文件上传

2019-11-14 20:58:01

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关于Struts2的多文件上传

之前写过一篇文章，关于Struts2文件上传：http://www.VEVb.com/lichenwei/p/3927964.html

现在来说下多文件上传，其实就把上传文件当成是一个数组去处理，和单文件上传是一样的思路，直接贴一段代码：

uploads.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%><%@ taglib PRefix="s" uri="/struts-tags" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>上传文件示例</title></head><body><s:actionerror/><s:fielderror/><s:form action="uploads.action" theme="simple" namespace="/" method="post" enctype="multipart/form-data">    <s:file label="上传文件：" name="upload"></s:file>    <s:file label="上传文件：" name="upload"></s:file>    <s:file label="上传文件：" name="upload"></s:file>    <s:submit value="提交上传"></s:submit></s:form></body></html>

UploadsAction.java

package com.lcw.struts2.upload;import java.io.File;import java.io.IOException;import org.apache.commons.io.FileUtils;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;public class UploadsAction extends ActionSupport {    // <s:file label="上传文件：" name="upload"></s:file>    private File[] upload;// 命名应该和上传页面name属性值保持一致    private String[] uploadContentType;// 属性值+ContentType    private String[] uploadFileName;// 属性值+FielName    public void setUpload(File[] upload) {        this.upload = upload;    }    public void setUploadContentType(String[] uploadContentType) {        this.uploadContentType = uploadContentType;    }    public void setUploadFileName(String[] uploadFileName) {        this.uploadFileName = uploadFileName;    }    public String upload() {        for (int i = 0; i < upload.length; i++) {            File destFile = new File(ServletActionContext.getServletContext()                    .getRealPath("/uploads")                    + "/" + uploadFileName[i]);            try {                // 工具类                FileUtils.copyFile(upload[i], destFile);            } catch (IOException e) {                e.printStackTrace();            }        }        return SUCCESS;    }}

struts.xml

<?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.devMode" value="true" />    <constant name="struts.multipart.maxSize" value="20000000000"></constant>        <!-- 全局国际化配置 -->    <constant name="struts.custom.i18n.resources" value="messages"></constant>    <package name="struts2test" extends="struts-default">        <action name="uploads" class="com.lcw.struts2.upload.UploadsAction" method="upload">            <result name="success">/index.jsp</result>            <result name="input">/upload.jsp</result>        </action>    </package></struts>

来看下效果图：