struts2修改Fileupload文件大小限制

struts.xml配置：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"    "http://struts.apache.org/dtds/struts-2.3.dtd"><struts>    <constant name="struts.action.extension" value="action,do.org,,"></constant>    <constant name="struts.configuration.xml.reload" value="true"></constant>    <constant name="struts.multipart.maxSize" value="55000000"/>    <package name="default" namespace="/" extends="struts-default">        <!--可以为一个Action写多个方法进行对应，这样可以减少Action类的数量，但是无法减少配置的数量  -->        <!-- <action name="user_addInput" class="com.my.action.UserAction" method="addInput">            <result name="success">/WEB-INF/user/addInput.jsp</result>        </action>        <action name="user_add" class="com.my.action.UserAction" method="add">            <result name="success">/WEB-INF/user/add.jsp</result>        </action>        <action name="user_list" class="com.my.action.UserAction" method="list">            <result name="success">/WEB-INF/user/list.jsp</result>        </action> -->        <!-- 一下方式仅仅写一个Action，之后通过在调用的时候确定方法;        这个方法虽然减少了action的配置，但是依然需要增加大量的结果集进行配置 -->        <!-- <action name="user" class="com.my.action.UserAction">            <result name="addInput">/WEB-INF/user/addInput.jsp</result>            <result name="add">/WEB-INF/user/add.jsp</result>            <result name="list">/WEB-INF/user/list.jsp</result>        </action> -->        <!--基于通配符的方式({n}代表第n哥*)  -->        <action name="*_*" class="com.my.action.{1}Action" method="{2}">            <result>/WEB-INF/{1}/{2}.jsp</result>            <result type="redirect" name="re_list">/{1}_list</result>            <interceptor-ref name="fileUpload">                <param name="maximumSize">52428800</param>             </interceptor-ref>            <interceptor-ref name="defaultStack"></interceptor-ref>        </action>    </package></struts>

MessageAction.java:

package com.my.action;import java.io.File;import java.io.IOException;import java.lang.reflect.InvocationTargetException;import java.util.Date;import org.apache.commons.beanutils.BeanUtils;import org.apache.commons.io.FileUtils;import com.my.dao.MessageDao;import com.my.model.Message;import com.my.model.Point;import com.opensymphony.xwork2.ModelDriven;public class MessageAction implements ModelDriven<Message> {    private Message message;    private java.io.File[] photo;    private String[] photoFileName;    private String[] photoContentType;    public Message getMessage() {        return message;    }    public void setMessage(Message message) {        this.message = message;    }    public String[] getPhotoFileName() {        return photoFileName;    }    /**     * 上传的文件名会通过该方法设置     * @param photoFileName     */    public void setPhotoFileName(String[] photoFileName) {        this.photoFileName = photoFileName;    }    public String[] getPhotoContentType() {        return photoContentType;    }    /**     * 设置文件类型；不论是文件名还是文件格式，所使用的格式是固定的[xxxFileName,xxxContentType]     * @param photoContentType     */    public void setPhotoContentType(String[] photoContentType) {        this.photoContentType = photoContentType;    }    public java.io.File[] getPhoto() {        return photo;    }    public void setPhoto(java.io.File[] photo) {        this.photo = photo;    }    public String fileInput() {        return "success";    }    public String file() {        System.out.println(this);//      System.out.println(photo.getName());//      System.out.println(photoFileName+", "+photoContentType);        //copy the tmp file to the real file        try {            for(int i=0; i<photo.length; ++i) {                File file=photo[i];                String name="E:\\EclipseWorkspace\\uploadFiles\\"+photoFileName[i];                FileUtils.copyFile(file, new File(name));            }        } catch (IOException e) {            e.printStackTrace();        }        return "success";    }    @Override    public Message getModel() {        if(null==message) message=new Message();        return message;    }}

fileInput.jsp:

<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>file Input</title></head><body>    <h1>Message fileInput</h1>    <form action="Message_file" method="post" enctype="multipart/form-data">        Title:<input type="text" name="title"/><br />        File:<input type="file" name="photo" /><br />        File:<input type="file" name="photo" /><br />        File:<input type="file" name="photo" /><br />        File:<input type="file" name="photo" /><br />        File:<input type="file" name="photo" /><br />        File:<input type="file" name="photo" /><br />        <input type="submit" value="提交"/>    </form>    <s:debug></s:debug></body></html>