struts2文件异步上传

2023-10-16 20:41:34

代码结构

用到的js文件：

用到的jar包：

jar和js库文件下载地址：下载地址

首先我们写FileAction类

package com.ajaxfile.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings("serial")
public class FileAction extends ActionSupport {

    private File file;
    private String fileFileName;
    private String fileFileContentType;

    private String message = "你已成功上传文件";
    
    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public File getFile() {
        return file;
    }

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

    public String getFileFileName() {
        return fileFileName;
    }

    public void setFileFileName(String fileFileName) {
        this.fileFileName = fileFileName;
    }

    public String getFileFileContentType() {
        return fileFileContentType;
    }

    public void setFileFileContentType(String fileFileContentType) {
        this.fileFileContentType = fileFileContentType;
    }

    @SuppressWarnings("deprecation")
    @Override
    public String execute() throws Exception {
        
        String path = ServletActionContext.getRequest().getRealPath("/upload");

        try {
            File f = this.getFile();
            if(this.getFileFileName().endsWith(".exe")){
                message="对不起,你上传的文件格式不允许!!!";
                return ERROR;
            }
            FileInputStream inputStream = new FileInputStream(f);
            FileOutputStream outputStream = new FileOutputStream(path + "/"+ this.getFileFileName());
            byte[] buf = new byte[1024];
            int length = 0;
            while ((length = inputStream.read(buf)) != -1) {
                outputStream.write(buf, 0, length);
            }
            inputStream.close();
            outputStream.flush();
        } catch (Exception e) {
            e.printStackTrace();
            message = "对不起,文件上传失败了!!!!";
        }
        return SUCCESS;
    }

}

struts.xml配置

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <package name="struts2" extends="json-default">
        <action name="fileUploadAction" class="com.ajaxfile.action.FileAction">
            <result type="json" name="success">
                <param name="contentType">
                    text/html
                </param>
            </result>
            <result type="json" name="error">
                <param name="contentType">
                    text/html
                </param>
            </result>
        </action>
    </package>
</struts>

web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <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>*.action</url-pattern>
  </filter-mapping>
</web-app>

index.jsp文件内容

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Insert title here</title>
        <script type="text/javascript" src="js/jquery.js"></script>
        <script type="text/javascript" src="js/ajaxfileupload.js"></script>
        <script type="text/javascript">
    function ajaxFileUpload()
    {
        
        $("#loading")
        .ajaxStart(function(){
            $(this).show();
        })//开始上传文件时显示一个图片
        .ajaxComplete(function(){
            $(this).hide();
        });//文件上传完成将图片隐藏起来
        
        $.ajaxFileUpload
        (
            {
                url:‘fileUploadAction.action‘,//用于文件上传的服务器端请求地址
                secureuri:false,//一般设置为false
                fileElementId:‘file‘,//文件上传空间的id属性  <input type="file" id="file" name="file" />
                dataType: ‘json‘,//返回值类型 一般设置为json
                success: function (data, status)  //服务器成功响应处理函数
                {
                    alert(data.message);//从服务器返回的json中取出message中的数据,其中message为在struts2中定义的成员变量
                    
                    if(typeof(data.error) != ‘undefined‘)
                    {
                        if(data.error != ‘‘)
                        {
                            alert(data.error);
                        }else
                        {
                            alert(data.message);
                        }
                    }
                },
                error: function (data, status, e)//服务器响应失败处理函数
                {
                    alert(e);
                }
            }
        )
        
        return false;

    }
    </script>
    </head>
    <body>
        <img src="loading.gif" id="loading" style="display: none;">
        <input type="file" id="file" name="file" />
        <br />
        <input type="button" value="上传" onclick="return ajaxFileUpload();">
    </body>
</html>

测试一下！！！选择文件点击上传~~

上传成功了有木有点点小小的兴奋~~~

再看看刚刚上传的！！！

完整代码下载：代码下载

struts2文件异步上传

码农公寓

相关文章