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139 lines
5.2 KiB
139 lines
5.2 KiB
5 years ago
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<%--
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温馨提示:
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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。
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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。
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--%>
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<%@ page session="false" pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %>
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<%@ page import="java.io.*"%>
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<%@ page import="java.util.*"%>
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<%@ page import="java.text.*"%>
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<%@ page import="org.apache.commons.fileupload.*"%>
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<%@ page import="org.apache.commons.fileupload.disk.*"%>
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<%@ page import="org.apache.commons.fileupload.servlet.*"%>
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<%@ page import="org.apache.commons.fileupload.util.*"%>
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<%@ page import="com.alibaba.fastjson.*"%>
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<%
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String contentType = request.getContentType();
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if ( contentType.indexOf("multipart/form-data") >= 0 )
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{
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Result result = new Result();
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result.avatarUrls = new ArrayList();
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result.success = false;
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result.msg = "Failure!";
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FileItemFactory factory = new DiskFileItemFactory();
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ServletFileUpload upload = new ServletFileUpload(factory);
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FileItemIterator fileItems = upload.getItemIterator(request);
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//定义一个变量用以储存当前头像的序号
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int avatarNumber = 1;
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//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。
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SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmssS");
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String fileName = simpleDateFormat.format(new Date());
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Random random = new Random();
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String randomCode = "";
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for ( int i = 0; i < 8; i++ )
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{
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randomCode += Integer.toString(random.nextInt(36), 36);
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}
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fileName = fileName + randomCode;
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//基于原图的初始化参数
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String initParams = "";
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BufferedInputStream inputStream;
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BufferedOutputStream outputStream;
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//遍历表单域
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while( fileItems.hasNext() )
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{
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FileItemStream fileItem = fileItems.next();
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String fieldName = fileItem.getFieldName();
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//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)
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Boolean isSourcePic = fieldName.equals("__source");
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//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
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//String name = fileItem.getName();
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//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。
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//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。
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if ( fieldName.equals("__initParams") )
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{
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inputStream = new BufferedInputStream(fileItem.openStream());
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byte[] bytes = new byte [inputStream.available()];
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inputStream.read(bytes);
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initParams = new String(bytes, "UTF-8");
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inputStream.close();
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}
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//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
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else if ( isSourcePic || fieldName.startsWith("__avatar") )
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{
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String virtualPath = "/upload/jsp_avatar" + avatarNumber + "_" + fileName + ".jpg";
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//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)。
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if( isSourcePic )
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{
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result.sourceUrl = virtualPath = "/upload/jsp_source_" + fileName + ".jpg";
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}
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//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)。
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else
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{
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result.avatarUrls.add(virtualPath);
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avatarNumber++;
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}
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inputStream = new BufferedInputStream(fileItem.openStream());
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outputStream = new BufferedOutputStream(new FileOutputStream(application.getRealPath("/") + virtualPath.replace("/", "\\")));
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Streams.copy(inputStream, outputStream, true);
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inputStream.close();
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outputStream.flush();
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outputStream.close();
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}
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/*else
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{
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附加在接口中的其他参数...
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如下代码在上传接口upload.jsp中定义了一个user=xxx的参数:
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var swf = new fullAvatarEditor("swf", {
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id: "swf",
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upload_url: "Upload.asp?user=xxx"
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});
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即可如下获取user的值xxx
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inputStream = new BufferedInputStream(fileItem.openStream());
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byte[] bytes = new byte [inputStream.available()];
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inputStream.read(bytes);
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String user = new String(bytes, "UTF-8");
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inputStream.close();
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}*/
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}
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if ( result.sourceUrl != null )
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{
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result.sourceUrl += initParams;
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}
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result.success = true;
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result.msg = "Success!";
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/*
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To Do...可在此处处理储存事项
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*/
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//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)
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out.println(JSON.toJSONString(result));
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}
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%>
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<%!
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/**
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* 表示上传的结果。
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*/
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private class Result
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{
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/**
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* 表示图片是否已上传成功。
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*/
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public Boolean success;
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/**
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* 自定义的附加消息。
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*/
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public String msg;
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/**
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* 表示原始图片的保存地址。
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*/
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public String sourceUrl;
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/**
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* 表示所有头像图片的保存地址,该变量为一个数组。
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*/
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public ArrayList avatarUrls;
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}
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%>
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