struts2.0文件上传及展示_struts2 实现上传文件列表展示-优快云博客

本文链接：https://blog.youkuaiyun.com/luozw_123/article/details/52040909

本文介绍了一个使用Struts2框架进行文件上传的例子，详细展示了web配置、struct.xml配置、FileUploadAction类实现、jsp上传页面及展示页面的实现过程。

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1.sturts的web文件的配置

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

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

2.struct.xml中的配置

<action name="fileuploadAction_*" class="cn.ecit.xtzs.web.controller.FileUploadAction" method="{1}">
           
           <interceptor-ref name="fileUpload">
             
             <param name="allowedTypes">application/vnd.ms-excel，image/bmp,image/png,image/gif,image/jpeg
</param>
             
             <param name="maximumSize">2000000</param>
             
             
           </interceptor-ref>
           <interceptor-ref name="defaultStack"/>
            <result name="success">/common/success.jsp</result>
            <result name="input">/common/failure.jsp</result>
</action>

3.FileUploadAction类的实现

ublic class FileUploadAction extends ActionSupport implements ModelDriven<User>{

   private User user=new User();
   private File fileUpload;
    private String fileUploadContextType;
    private String fileUploadFileName;

   public File getFileUpload() {
       return fileUpload;
   }

   public void setFileUpload(File fileUpload) {
       this.fileUpload = fileUpload;
   }

   public String getFileUploadContextType() {
       return fileUploadContextType;
   }

   public void setFileUploadContextType(String fileUploadContextType) {
       this.fileUploadContextType = fileUploadContextType;
   }

   public String getFileUploadFileName() {
       return fileUploadFileName;
   }

   public void setFileUploadFileName(String fileUploadFileName) {
       this.fileUploadFileName = fileUploadFileName;
   }
   public String upload()
    {
       ServletContext servletContext= ServletActionContext.getServletContext();
       String path=servletContext.getRealPath("/upload");
       File file=new File(path,fileUploadFileName);
       if(file.exists())
       {
           file.mkdirs();
       }
       try {
           FileUtils.copyFile(fileUpload, file);
       } catch (Exception e) {
           e.printStackTrace();
           return "INPUT";
       }
        ServletActionContext.getRequest().setAttribute("user", user);;
       return SUCCESS;
    }
   @Override
   public User getModel() {
       return user;
   }

}

4.jsp上传页面:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>

<html>
<head>
    <title>My JSP 'upload.jsp' starting page</title>
</head>
<body>
   <s:form action="/upload/fileuploadAction_upload.action" enctype="multipart/form-data" method="post">
            <s:file name="fileUpload"></s:file>
            <s:submit value="上传"></s:submit>
   </s:form>
</body>
</html>

5.展示页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
    <title>My JSP 'success.jsp' starting page</title>
    </head>
<body>
    <img alt="" src="${fileUploadFileName}"/>
</body>
</html>