Struts多文件上传及N个文件上传

如何配置dwr

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9月10

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14:37Heck

编程杂谈 From: 本站原创

一.web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app
  PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
    <servlet>
        <servlet-name>actionServlet</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>2</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>actionServlet</servlet-name> 
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    
    <welcome-file-list>
         <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    
    <error-page>
         <error-code>404</error-code>
         <location>/error.jsp</location>
    </error-page>
</web-app>

二.struts-config.xml文件

<?xml version="1.0" encoding="ISO-8859-1" ?>    
<!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>
     
     <form-beans>
         <form-bean name="uploadForm" type="org.apache.struts.action.DynaActionForm">
            <form-property name="type" type ="java.lang.String[]"/>
            <form-property name="name" type ="java.lang.String[]"/>
              <form-property name="file0" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file1" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file2" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file3" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file4" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file5" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file6" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file7" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file8" type ="org.apache.struts.upload.FormFile"/>
            <form-property name="file9" type ="org.apache.struts.upload.FormFile"/>
         </form-bean>
     </form-beans>
     
     <global-forwards>
          <forward name= "successed" path="/index.jsp"></forward>    
          <forward name= "failed" path="/error.jsp"></forward>    
     </global-forwards>
     
     <action-mappings>
          <action path="/uploaded" type="com.fangchuang.action.UploadAction" 
                  name="uploadForm" scope="request" input="/upload.jsp">
                <forward name="uploaded" path="/upload.jsp"></forward>
          </action>
     </action-mappings>
</struts-config>

三.upload.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="gb2312" errorPage="error.jsp"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<%@ taglib uri="/WEB-INF/struts-tiles.tld" prefix="title"%>

<html>
<head>
<title>上传多个文件的jsp文件</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="struts,多个文件,上传">
<meta http-equiv="description" content="This is a test">
</head>
<body      >

<html:form action="uploaded.do" enctype="multipart/form-data" method="post">
    <table border="1" width="80%" align="center">
        <tr bgColor=#62bcff>
            <td align="left">文件类型</td>
            <td align="left">文件描述</td>
            <td align="left">文件名</td>
        </tr>

</table>
</html:form>

</body>
</html>

四.还有两个简单jsp文件index.jsp,error.jsp可以自己写。

五.action文件

package com.heck.action;
/**
 * 处理上传文件action
 */
public class UploadAction extends Action {
    public ActionForward execute(
            ActionMapping mapping, 
            ActionForm form,
            HttpServletRequest request, 
            HttpServletResponse response) {
        DynaActionForm fileForm = (DynaActionForm) form;
        String[] types = (String[]) fileForm.get("type");
        String[] names = (String[]) fileForm.get("name");

FormFile file0 = (FormFile) fileForm.get("file0");
        FormFile file1 = (FormFile) fileForm.get("file1");
        FormFile file2 = (FormFile) fileForm.get("file2");
        FormFile file3 = (FormFile) fileForm.get("file3");
        FormFile file4 = (FormFile) fileForm.get("file4");
        FormFile file5 = (FormFile) fileForm.get("file5");
        FormFile file6 = (FormFile) fileForm.get("file6");
        FormFile file7 = (FormFile) fileForm.get("file7");
        FormFile file8 = (FormFile) fileForm.get("file8");
        FormFile file9 = (FormFile) fileForm.get("file9");

Map<String, FormFile> fileMap = new HashMap<String, FormFile>();
        fileMap.put("file0" + "*" + types[0] + "*" + names[0], file0);
        fileMap.put("file1" + "*" + types[1] + "*" + names[1], file1);
        fileMap.put("file2" + "*" + types[2] + "*" + names[2], file2);
        fileMap.put("file3" + "*" + types[3] + "*" + names[3], file3);
        fileMap.put("file4" + "*" + types[4] + "*" + names[4], file4);
        fileMap.put("file5" + "*" + types[5] + "*" + names[5], file5);
        fileMap.put("file6" + "*" + types[6] + "*" + names[6], file6);
        fileMap.put("file7" + "*" + types[7] + "*" + names[7], file7);
        fileMap.put("file8" + "*" + types[8] + "*" + names[8], file8);
        fileMap.put("file9" + "*" + types[9] + "*" + names[9], file9);

Set fileSet = fileMap.entrySet();
        Iterator iter = fileSet.iterator();

// 取当前系统路径E:\Tomcat5\webapps\strutsUpload\ 其中strutsUpload为当前context
        String filePath = this.getServlet().getServletContext().getRealPath("/");
        // 保存文件的文件夹
        File savePath = new File(filePath + "UploadFiles/");
        filePath = filePath+ "UploadFiles/";
        if (!savePath.exists()) {
            savePath.mkdir();
        }
        while (iter.hasNext()) {
            Map.Entry unit = (Map.Entry) iter.next();
            String key = (String) unit.getKey();
            FormFile file = (FormFile) unit.getValue();    
            //文件大小符合要求，且是图片文件
            if ((file.getFileSize() >= 1)&& DealPhoto.isPhoto(file)) {
                //图片类别
                String photoType = key.substring(key.indexOf("*") + 1, key
                        .lastIndexOf("*"));
                //图片描述
                String photoName = key.substring(key.lastIndexOf("*") + 1, key
                        .length());
                
                //存数据库操作，在数据库中保存文件的名称，类型，及在服务器上的相对路径
                //判断是否重名
                if(DealPhoto.isFileExist(file.getFileName(),filePath))
                    DealPhoto.rename(file.getFileName(),filePath);
                try {
                 InputStream stream = file.getInputStream();// 把文件读入
                 // 建立一个上传文件的输出流 
                 OutputStream bos = new FileOutputStream(filePath+file.getFileName());
                 int bytesRead = 0;
                 byte[] buffer = new byte[8192];
                 while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
                  bos.write(buffer, 0, bytesRead);// 将文件写入服务器
                 }
                 bos.close();
                 stream.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

}
        return mapping.findForward("uploaded");
        //还有其他可以改正的地方，如错误信息提示，把照片处理函数放到一个公用类,写文件操作等
    }
}

六.照片处理类文件

package com.heck.run;
/**
 * 图片处理
 *
 */
public class DealPhoto {
    /**
     * 判断照片类型 .jpg .png .gif 目前只支持这三种格式
     * @param file
     * @return
     */
    public static boolean isPhoto(FormFile file) {
        String fileName = getString(file.getFileName());
        if (fileName.equals(""))
            return false;
        if ((fileName.toLowerCase().endsWith(".jpg"))
                || (fileName.toLowerCase().endsWith(".gif"))
                || (fileName.toLowerCase().endsWith(".png")))
            return true;
        else
            return false;
    }

/**
     * 
     * @param str
     * @return
     */
    public static String getString(String str) {
        if (str == null)
            str = "";
        if (str.equals("null"))
            str = "";
        str = str.trim();
        return str;
    }

/**
     * 判断文件是否存在
     * @param fileName
     * @param dir
     * @return
     */
    public static boolean isFileExist(String fileName, String dir) {
        File files = new File(dir + fileName);
        return (files.exists()) ? true : false;
    }

/**
     * 重命名
     * @param fileName
     * @param dir
     */
    public static void rename(String fileName, String dir) {
        String extendFile = "";
        if (isJpg(fileName))
            extendFile = ".jpg";
        else if (isGif(fileName))
            extendFile = ".gif";
        else if (isPng(fileName))
            extendFile = ".png";
        else
            extendFile = ".jpg";
        Random random = new Random();
        int add = random.nextInt(10000);
        String ret = fileName + add + extendFile;
        while (isFileExist(ret, dir)) {
            add = random.nextInt(10000);
            ret = fileName + add + extendFile;
        }
        File file = new File(dir + fileName);
        File reFile = new File(dir + ret);
        file.renameTo(reFile);
    }

public static boolean isGif(String file) {
        if (file.toLowerCase().endsWith(".gif")) {
            return true;
        } else {
            return false;
        }
    }

public static boolean isJpg(String file) {
        if (file.toLowerCase().endsWith(".jpg")) {
            return true;
        } else {
            return false;
        }
    }

public static boolean isPng(String file) {
        if (file.toLowerCase().endsWith(".png")) {
            return true;
        } else {
            return false;
        }
    }
}

来源：Heck's Blog
地址：https://www.heckjj.com/struts-multifile-upload-html/
转载时须以链接形式注明作者和原始出处及本声明，否则将追究法律责任，谢谢配合！

Tags: struts多文件上传 , n个文件上传

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