jquery之ajaxfileupload异步上传插件
2020-12-13 04:41
标签:style blog class c java tar 来自:http://www.blogjava.net/sxyx2008/archive/2010/11/02/336826.html 由于项目需求,在处理文件上传时需要使用到文件的异步上传。这里使用Jquery Ajax File Uploader这个组件下载地址:http://www.phpletter.com/download_project_version.php?version_id=6 @SuppressWarnings( @SuppressWarnings( } struts.xml 注意结合Action观察struts.xml中result的配置。 contentType参数是一定要有的,否则浏览器总是提示将返回的JSON结果另存为文件,不会交给ajaxfileupload处理。这是因为struts2
JSON Plugin默认的contentType为application/json,而ajaxfileupload则要求为text/html。
} 注意观察 jquery之ajaxfileupload异步上传插件,搜素材,soscw.com jquery之ajaxfileupload异步上传插件 标签:style blog class c java tar 原文地址:http://www.cnblogs.com/helloxiaoxiang/p/3732773.html
服务器端采用struts2来处理文件上传。
所需环境:
jquery.js
ajaxfileupload.js
struts2所依赖的jar包
及struts2-json-plugin-2.1.8.1.jar
编写文件上传的Action
import java.io.FileInputStream;
import java.io.FileOutputStream;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;
public class FileAction extends ActionSupport {
private String fileFileName;
private String fileFileContentType;
public String getMessage() {
return message;
}
this.message = message;
}
return file;
}
this.file = file;
}
return fileFileName;
}
this.fileFileName = fileFileName;
}
return fileFileContentType;
}
this.fileFileContentType = fileFileContentType;
}
@Override
public String execute() throws Exception {
String path = ServletActionContext.getRequest().getRealPath("/upload");
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;
}
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>
文件上传的jsp页面
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 heretitle>
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
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action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;
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>