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simple-yewu/frontend/web/assets/plugins/fullavatareditor/jsp/upload.jsp

138 lines
5.2 KiB

<%--
温馨提示:
在flash的参数名upload_url中可自行定义一些参数(请求方式:POST),定义后在服务器端获取即可,比如可以应用到用户验证,文件的保存名等。
本示例未作极致的用户体验与严谨的安全设计(如用户直接访问此页时该如何,万一客户端数据不可信时验证文件的大小、类型等),只保证正常情况下无误,请阁下注意。
--%>
<%@ page session="false" pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.text.*"%>
<%@ page import="org.apache.commons.fileupload.*"%>
<%@ page import="org.apache.commons.fileupload.disk.*"%>
<%@ page import="org.apache.commons.fileupload.servlet.*"%>
<%@ page import="org.apache.commons.fileupload.util.*"%>
<%@ page import="com.alibaba.fastjson.*"%>
<%
String contentType = request.getContentType();
if ( contentType.indexOf("multipart/form-data") >= 0 )
{
Result result = new Result();
result.avatarUrls = new ArrayList();
result.success = false;
result.msg = "Failure!";
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
FileItemIterator fileItems = upload.getItemIterator(request);
//定义一个变量用以储存当前头像的序号
int avatarNumber = 1;
//取服务器时间+8位随机码作为部分文件名,确保文件名无重复。
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmssS");
String fileName = simpleDateFormat.format(new Date());
Random random = new Random();
String randomCode = "";
for ( int i = 0; i < 8; i++ )
{
randomCode += Integer.toString(random.nextInt(36), 36);
}
fileName = fileName + randomCode;
//基于原图的初始化参数
String initParams = "";
BufferedInputStream inputStream;
BufferedOutputStream outputStream;
//遍历表单域
while( fileItems.hasNext() )
{
FileItemStream fileItem = fileItems.next();
String fieldName = fileItem.getFieldName();
//是否是原始图片 file 域的名称(默认的 file 域的名称是__source,可在插件配置参数中自定义。参数名:src_field_name)
Boolean isSourcePic = fieldName.equals("__source");
//文件名,如果是本地或网络图片为原始文件名(不含扩展名)、如果是摄像头拍照则为 *FromWebcam
//String name = fileItem.getName();
//当前头像基于原图的初始化参数(即只有上传原图时才会发送该数据),用于修改头像时保证界面的视图跟保存头像时一致,提升用户体验度。
//修改头像时设置默认加载的原图url为当前原图url+该参数即可,可直接附加到原图url中储存,不影响图片呈现。
if ( fieldName.equals("__initParams") )
{
inputStream = new BufferedInputStream(fileItem.openStream());
byte[] bytes = new byte [inputStream.available()];
inputStream.read(bytes);
initParams = new String(bytes, "UTF-8");
inputStream.close();
}
//如果是原始图片 file 域的名称或者以默认的头像域名称的部分“__avatar”打头
else if ( isSourcePic || fieldName.startsWith("__avatar") )
{
String virtualPath = "/upload/jsp_avatar" + avatarNumber + "_" + fileName + ".jpg";
//原始图片(默认的 file 域的名称是__source,可在插件配置参数中自定义。参数名:src_field_name)。
if( isSourcePic )
{
result.sourceUrl = virtualPath = "/upload/jsp_source_" + fileName + ".jpg";
}
//头像图片(默认的 file 域的名称:__avatar1,2,3...,可在插件配置参数中自定义,参数名:avatar_field_names)。
else
{
result.avatarUrls.add(virtualPath);
avatarNumber++;
}
inputStream = new BufferedInputStream(fileItem.openStream());
outputStream = new BufferedOutputStream(new FileOutputStream(application.getRealPath("/") + virtualPath.replace("/", "\\")));
Streams.copy(inputStream, outputStream, true);
inputStream.close();
outputStream.flush();
outputStream.close();
}
/*else
{
附加在接口中的其他参数...
如下代码在上传接口upload.jsp中定义了一个user=xxx的参数:
var swf = new fullAvatarEditor("swf", {
id: "swf",
upload_url: "Upload.asp?user=xxx"
});
即可如下获取user的值xxx
inputStream = new BufferedInputStream(fileItem.openStream());
byte[] bytes = new byte [inputStream.available()];
inputStream.read(bytes);
String user = new String(bytes, "UTF-8");
inputStream.close();
}*/
}
if ( result.sourceUrl != null )
{
result.sourceUrl += initParams;
}
result.success = true;
result.msg = "Success!";
/*
To Do...可在此处处理储存事项
*/
//返回图片的保存结果(返回内容为json字符串,可自行构造,该处使用fastjson构造)
out.println(JSON.toJSONString(result));
}
%>
<%!
/**
* 表示上传的结果。
*/
private class Result
{
/**
* 表示图片是否已上传成功。
*/
public Boolean success;
/**
* 自定义的附加消息。
*/
public String msg;
/**
* 表示原始图片的保存地址。
*/
public String sourceUrl;
/**
* 表示所有头像图片的保存地址,该变量为一个数组。
*/
public ArrayList avatarUrls;
}
%>