struts1.2 单文件上传-优快云博客

本文链接：https://blog.youkuaiyun.com/arj952116/article/details/83873277

jsp:

<%@ page language="java" pageEncoding="GBK"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%> 
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
 
<html> 
    <head>
        <title>JSP for UpfileForm form</title>
    </head>
    <body>
        <html:form action="/upfile" enctype="multipart/form-data">
            file : <html:file property="file" /><html:errors property="file"/><br/>
            <html:submit value="确定"/>
        </html:form>
    </body>
</html>

注意表单类型必须为:enctype="multipart/form-data".
Struts-Config.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
  <data-sources />
  <form-beans >
    <form-bean name="upfileForm" type="com.yourcompany.struts.form.UpfileForm" />

  </form-beans>

  <global-exceptions />
  <global-forwards />
  <action-mappings >
    <action
      attribute="upfileForm"
      input="/upfile.jsp"
      name="upfileForm"
      path="/upfile"
      scope="request"
      type="com.yourcompany.struts.action.UpfileAction" />

  </action-mappings>

  <message-resources parameter="com.yourcompany.struts.ApplicationResources" />
</struts-config>

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

UpfileForm.java:

/**//*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.yourcompany.struts.form;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;

/** *//** 
 * MyEclipse Struts
 * Creation date: 09-28-2007
 * 
 * XDoclet definition:
 * @struts.form name="upfileForm"
 */
public class UpfileForm extends ActionForm {
    /**//*
     * Generated fields
     */

    /** *//** file property */
    private FormFile file;


    /**//*
     * Generated Methods
     */

    /** *//** 
     * Method validate
     * @param mapping
     * @param request
     * @return ActionErrors
     */
    public ActionErrors validate(ActionMapping mapping,
            HttpServletRequest request) {
        // TODO Auto-generated method stub
        return null;
    }

    /** *//** 
     * Method reset
     * @param mapping
     * @param request
     */
    public void reset(ActionMapping mapping, HttpServletRequest request) {
        // TODO Auto-generated method stub
    }

    public FormFile getFile() {
        return file;
    }

    public void setFile(FormFile file) {
        this.file = file;
    }

    
}

UpfileAction.java:

/**//*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.yourcompany.struts.action;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

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;

import com.yourcompany.struts.form.UpfileForm;

/** *//** 
 * MyEclipse Struts
 * Creation date: 09-28-2007
 * 
 * XDoclet definition:
 * @struts.action path="/upfile" name="upfileForm" input="/upfile.jsp" scope="request" validate="true"
 */
public class UpfileAction extends Action {
    /**//*
     * Generated Methods
     */

    /** *//** 
     * Method execute
     * @param mapping
     * @param form
     * @param request
     * @param response
     * @return ActionForward
     */
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response) {
        UpfileForm upfileForm = (UpfileForm) form;
        FormFile file = upfileForm.getFile();
        FileOutputStream fileOutput;
        
        try {
            fileOutput = new FileOutputStream("d://" + file.getFileName());
            fileOutput.write(file.getFileData());
            fileOutput.flush();
            fileOutput.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        

        return null;
    }
}

当然对于Form我们也可以用动态的:

LazyValidatorForm uploadForm = (LazyValidatorForm) form;

然后FormFile可以直接通过form得到:

FormFile formFile = uploadForm.get("file");

相应的在web.xml中的配置：

<form-bean name="uploadForm" type="org.apache.struts.validator.lazyValidatorForm" />