struts2文件异步上传

代码结构

struts2文件异步上传

用到的js文件：

struts2文件异步上传

用到的jar包：

struts2文件异步上传

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~~

struts2文件异步上传

上传成功了有木有点点小小的兴奋~~~

struts2文件异步上传

再看看刚刚上传的！！！

struts2文件异步上传

完整代码下载：代码下载

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struts2文件异步上传

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