struts2文件上传

最新推荐文章于 2021-05-31 23:17:54 发布

原创最新推荐文章于 2021-05-31 23:17:54 发布 · 894 阅读

2 ·

CC 4.0 BY-SA版权

文章标签：

#struts #exception #upload #file #buffer #class

1.UploadAction代码:多文件上传

package com.hxz.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.struts2.ServletActionContext;
import com.hxz.exception.NameException;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
@SuppressWarnings("serial")
public class UploadAction extends ActionSupport {
    private String title;
    private File[] upload;
    private String[] uploadContentType;
    private String[] uploadFileName;
    private String savePath;
    
    
    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 String getSavePath() throws Exception {
        return ServletActionContext.getRequest().getRealPath(savePath);
    }
    public void setSavePath(String savePath) {
        this.savePath = savePath;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String execute() throws Exception {
        File[] files = getUpload();
        for(int i=0;i<files.length;i++){
        try {
            InputStream is = new FileInputStream(files[i]);
            File file = new File(this.getSavePath(), this.getUploadFileName()[i]);
            OutputStream os = new FileOutputStream(file);
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = is.read(buffer)) > 0) {
                os.write(buffer, 0, len);
            }
            os.close();
            is.close();
        } catch (Exception e) {
            e.printStackTrace();
            throw new NameException("上传文件错误!");
        }
        }
        return "zhe";
    }
}

2.upload.jsp

<%@ page language="java"  pageEncoding="GBK"%>
<%@ taglib prefix ="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>Upload File</title>
    
  </head>
  
  <body>
  
    <form action="uploadMany.action" method="post" enctype="multipart/form-data">
     <s:fielderror/>
     ${requestScope.typeError} <br>
      文件标题:<input type="text" name="title"/><br>
      选择1文件:<input type="file" name="upload"/><br>
      选择2文件:<input type="file" name="upload"/><br>
      选择3文件:<input type="file" name="upload"/><br>
     <input type="submit" value="上传"/> 
    </form>
  </body>
</html>

3.strust.xml,采用fileUpload拦截器实现文件类型和大小验证

<?xml version="1.0" encoding="GBK"?>
<!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.custom.i18n.resources" value="globalMessages"/>
    <constant name="struts.i18n.encoding" value="utf-8"/>
    <package name="lee" extends="json-default">
        <global-exception-mappings>
            <!-- 指Action抛出AuctionException异常时，转入名为exception的结果。 -->
            <exception-mapping exception="com.hxz.excepton.NameException" result="exception"/>
            <!-- 指Action抛出Exception异常时，转入名为exception的结果。 -->
            <exception-mapping exception="java.lang.Exception" result="exception"/>
        </global-exception-mappings>
        <action name="readName" class="com.hxz.action.NameAction">
            <result name="success">/testJstl.jsp</result>
            <result name="error">/error.jsp</result>
        </action>
        <action name="getNameById" class="com.hxz.action.NameAction" method="getNameById">
            <result name="success" type="json">/name.html</result>
            <result name="error">/error.jsp</result>
        </action>
         <action name="updateName" class="com.hxz.action.NameAction" method="updateName">
            <result name="success" >/name.html</result>    
            <result name="error">/error.jsp</result>
        </action>
        <action name="upload" class="com.hxz.action.UploadAction">
          <interceptor-ref name="fileUpload">
            <param name="allowedTypes">image/bmp,image/x-png,image/gif,image/pjpeg</param>
            <param name="maximumSize">2000</param>
          </interceptor-ref>
          <interceptor-ref name="defaultStack"/>
            <param name="savePath">/upload</param>
            <result name="zhe">/upload/succ.jsp</result>
            <result name="input">/upload/upload.jsp</result>
        </action>
           </package> 
</struts>

4.成功页面succ.jsp

<%@ page language="java"  pageEncoding="GBK"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
    
    <title>succ.jsp</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="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
  </head>
  <body>
    文件标题:<s:property value="+title"/><br>
   <img  src="<s:property value="uploadFileName[0]"/>" />
   <img  src="<s:property value="uploadFileName[1]"/>" />
   <img  src="<s:property value="uploadFileName[2]"/>" />
  </body>
</html>