Struts 上传功能实现

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Struts JSP Apache CSS XML

Struts2上传文件示例

源代码：

１.包如下：请自行下载
     础上添加 commouns_fileupload-1.2.jar

２.Action类

package com.sterning;

import java.io.File;

import javax.servlet.ServletContext;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.util.ServletContextAware;

import com.opensymphony.xwork2.ActionSupport;

public class StrutsFileUpload extends ActionSupport implements
        ServletContextAware {

    private File upload;// 实际上传文件

    private String uploadContentType; // 文件的内容类型

    private String uploadFileName; // 上传文件名

    private String fileCaption;// 上传文件时的备注

    private ServletContext context;

    public String execute() throws Exception {

        try {

            String targetDirectory = context.getRealPath("/upload");
            String targetFileName = uploadFileName;
            File target = new File(targetDirectory, targetFileName);
            FileUtils.copyFile(upload, target);

            setUploadFileName(target.getPath());//保存文件的存放路径
        } catch (Exception e) {

            addActionError(e.getMessage());

            return INPUT;
        }

        return SUCCESS;

    }

    public String getFileCaption() {
        return fileCaption;
    }

    public void setFileCaption(String fileCaption) {
        this.fileCaption = fileCaption;
    }

    public File getUpload() {
        return upload;
    }

    public void setUpload(File upload) {
        this.upload = upload;
    }

    public String getUploadContentType() {
        return uploadContentType;
    }

    public void setUploadContentType(String uploadContentType) {
        this.uploadContentType = uploadContentType;
    }

    public String getUploadFileName() {
        return uploadFileName;
    }

    public void setUploadFileName(String uploadFileName) {
        this.uploadFileName = uploadFileName;
    }

    public void setServletContext(ServletContext context) {
        this.context = context;
    }

}

３.页面

上传页面：upload.jsp

<%@ page language="java" contentType="text/html; charset=GB2312"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
    <head>
        <title>文件上传示例</title>
        <link href="<s:url value="/css/main.css"/>" rel="stylesheet"
            type="text/css" />

    </head>

    <body>

        <s:actionerror />
        <s:fielderror />
        <s:form action="doUpload" method="POST" enctype="multipart/form-data">
            <tr>
                <td colspan="2">
                    <h1>
                        文件上传示例
                    </h1>
                </td>
            </tr>

            <s:file name="upload" label="上传的文件" />
            <s:textfield name="fileCaption" label="备注" />
            <s:submit value="上   传"/>
        </s:form>
    </body>
</html>

上传成功页面：upload_success.jsp

<%@ page language="java" contentType="text/html; charset=GB2312"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
    <head>
        <title>上传成功</title>
        <link href="<s:url value="/css/main.css"/>" rel="stylesheet"
            type="text/css" />
    </head>

    <body>
        <table class="wwFormTable">
            <tr>

                <td colspan="2">
                    <h1>
                        上传成功
                    </h1>
                </td>
            </tr>

            <tr>
                <td class="tdLabel">
                    <label for="doUpload_upload" class="label">
                        内容类型:
                    </label>
                </td>
                <td>
                    <s:property value="uploadContentType" />
                </td>
            </tr>

            <tr>
                <td class="tdLabel">
                    <label for="doUpload_upload" class="label">
                        文件路径:
                    </label>
                </td>
                <td>
                    <s:property value="uploadFileName" />
                </td>
            </tr>

            <tr>
                <td class="tdLabel">
                    <label for="doUpload_upload" class="label">
                        临时文件:
                    </label>
                </td>
                <td>
                    <s:property value="upload" />
                </td>
            </tr>

            <tr>
                <td class="tdLabel">
                    <label for="doUpload_upload" class="label">
                        备注:
                    </label>
                </td>
                <td>
                    <s:property value="fileCaption" />
                </td>
            </tr>

        </table>

    </body>
</html>

４.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.i18n.encoding" value="GB2312" />

    <package name="NG" namespace="/" extends="struts-default">
        <action name="showUpload">
            <result>/upload.jsp</result>
        </action>

        <action name="doUpload" class="com.sterning.StrutsFileUpload">
            <result name="input">/upload.jsp</result>
            <result>/upload_success.jsp</result>
        </action>
    </package>

</struts>

５.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <display-name>customization</display-name>

    <filter>
        <filter-name>struts-cleanup</filter-name>
        <filter-class>
            org.apache.struts2.dispatcher.ActionContextCleanUp
        </filter-class>
    </filter>

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>
            org.apache.struts2.dispatcher.FilterDispatcher
        </filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts-cleanup</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

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2010-09-16 19:39
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