有很多微信开发的项目在手机端需要传图片，但是又不想调用微信的上传图片接口，于是采取了如下做法：
使用ajaxForm提交文件所需js：jquery.form.js
页面代码：
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8" %>
<%@include file="/context/mytags.jsp"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="contextPath" value="${pageContext.request.contextPath}"></c:set>
<!DOCTYPE html>
<html lang="zh-cn">
<head>
<title>页面标题</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="description" content="Write an awesome description for your new site here. You can edit this line in _config.yml. It will appear in your document head meta (for Google search results) and in your feed.xml site description.
">
<link rel="stylesheet" href="${contextPath}/plug-in/distribution/lib/weui.min.css">
<link rel="stylesheet" href="${contextPath}/plug-in/distribution/css/jquery-weui.css">
<link rel="stylesheet" href="${contextPath}/plug-in/distribution/css/style.css">
<style type="text/css">
.file {
position: relative;
display: inline-block;
background: #D0EEFF;
border: 1px solid #99D3F5;
border-radius: 4px;
padding: 4px 12px;
overflow: hidden;
color: #1E88C7;
text-decoration: none;
text-indent: 0;
line-height: 20px;
}
.file input {
position: absolute;
font-size: 100px;
right: 0;
top: 0;
opacity: 0;
}
.file:hover {
background: #AADFFD;
border-color: #78C3F3;
color: #004974;
text-decoration: none;
}
</style>
<script>
$(document).ready(function(){
});
</script>
</head>
<body ontouchstart onload="addressList();">
<!--主体-->
<header class="wy-header">
<a href="#" onClick="javascript :history.back(-1);"><div class="wy-header-icon-back"><span></span></div></a>
<div class="wy-header-title">资料上传</div>
</header>
<div class="weui-content">
<form id="imageForm" name="imageForm" action="${webRoot}/agentPicController.do?doAdd" method="post" enctype="multipart/form-data">
<input type="hidden" name="agentId" id="agentId" value="${agent.id}" />
<div style="width:100%;height:80px;">
<span style="float: left;"> <font size="4" color="blue">我的收款码：</font></span><br/>
<input style="height:30px;" class="file" type="file" name="agentCollectionCodes" id="agentCollectionCodes" accept="image/*"/>
<div id="agentCollectionCodess" align="center"></div>
</div>
<div style="width:100%;height:80px;">
<span style="float: left;"> <font size="4" color="blue">我的身份证：</font></span><br/>
<input style="height:30px;" type="file" class="file" name="agentIdentitys" id="agentIdentitys" accept="image/*"/>
<div id="agentIdentityss" align="center"></div>
</div> <div class="weui-btn-area"><input id="buttonAdd" class="weui-btn weui-btn_primary" type="button" value="提交图片"/></div> </form>
</div> <jsp:include page="loading.jsp"></jsp:include>
<jsp:include page="footer.jsp"></jsp:include>
<jsp:include page="shareinfo.jsp"></jsp:include>
<script src="${contextPath}/plug-in/distribution/lib/jquery-2.1.4.js"></script>
<script src="${contextPath}/plug-in/distribution/lib/fastclick.js"></script>
<script type="text/javascript" src="${contextPath}/plug-in/distribution/js/jquery.Spinner.js"></script>
<script type="text/javascript" src="${contextPath}/plug-in/distribution/js/jquery.form.js"></script> <script>
var AllImgExt=".jpg|.jpeg|.gif|.bmp|.png|"//全部图片格式类型 $(function() {
FastClick.attach(document.body);
});
$("#buttonAdd").click(function() {
//身份证
var agentIdentitys = $("#agentIdentitys").val();
if (agentIdentitys==null||agentIdentitys=="") {
$.alert("请上传身份证图片","温馨提示");
return false;
}else{
//如果图片文件，则进行图片信息处理
var FileExt=agentIdentitys.substr(agentIdentitys.lastIndexOf(".")).toLowerCase();
if(AllImgExt.indexOf(FileExt+"|")==-1){
$.alert("该文件类型不允许上传。请上传"+AllImgExt+"类型的文件，\n当前文件类型为"+FileExt,"温馨提示");
return false;
}
}
//收款码
var agentCollectionCodes = $("#agentCollectionCodes").val();
if (agentCollectionCodes==null||agentCollectionCodes=="") {
$.alert("请上传收款码图片","温馨提示");
return false;
}else{
//如果图片文件，则进行图片信息处理
var FileExt=agentCollectionCodes.substr(agentCollectionCodes.lastIndexOf(".")).toLowerCase();
if(AllImgExt.indexOf(FileExt+"|")==-1){
$.alert("该文件类型不允许上传。请上传"+AllImgExt+"类型的文件，\n当前文件类型为"+FileExt,"温馨提示");
return false;
}
}
$("#loading").show();
var form = $("#imageForm");
var options = {
url:'${webRoot}/agentPicController.do?doAdd',
type:'post',
data:$('#imageForm').serialize(),
success:function(data)
{
window.location.href="${webRoot}/mpweixin/uploadImages.do";
//$("#loading").hide();
}
};
form.ajaxSubmit(options);
});
</script>
<script src="${contextPath}/plug-in/distribution/js/jquery-weui.js"></script>
</body>
</html>
java代码：
/**
* 添加图片
*
* @param ids
* @return
* @throws FileUploadException
*/
@RequestMapping(params = "doAdd")
@ResponseBody
public AjaxJson doAdd(AgentPicEntity agentPic, HttpServletRequest request) throws Exception {
String message = null;
AgentPicEntity agentpic = systemService.findUniqueByProperty(AgentPicEntity.class, "agentId", agentPic.getAgentId());
if (agentpic==null) {
agentpic = new AgentPicEntity();
}
agentpic.setAgentId(agentPic.getAgentId());
//身份证
String agentIdentity = "agentIdentity";
//付款码
String agentCollectionCode = "agentCollectionCode";
AjaxJson j = new AjaxJson();
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
//解析request，将结果放置在list中
Map<String, List<MultipartFile>> fileMap = multiRequest.getMultiFileMap();
// 获取实体类的所有属性，返回Field数组
Field[] field = agentpic.getClass().getDeclaredFields();
// 遍历所有属性
for (int i = 0; i < field.length; i++) {
// 获取属性的名字
String name = field[i].getName();
//身份证或付款码
if (agentIdentity.equals(name)||agentCollectionCode.equals(name)) {
List<MultipartFile> files = fileMap.get(name+"s");
MultipartFile file = files.get(0);
if (!file.isEmpty()) {
// 文件保存路径
String filePath = request.getSession().getServletContext().getRealPath("/") + "upload/agentpic/"+ file.getOriginalFilename();
// 转存文件
file.transferTo(new File(filePath)); // 将属性的首字符大写，方便构造get，set方法
name = name.substring(0, 1).toUpperCase() + name.substring(1);
// 获取属性的类型
String type = field[i].getGenericType().toString();
if (type.equals("class java.lang.String")) {
//拼装setter方法
Method set = agentpic.getClass().getMethod("set"+name,String.class);
//调用setter方法
set.invoke(agentpic,"upload/agentpic/"+ file.getOriginalFilename());
}
}
}
}
message = "图片添加成功";
try{
agentPicService.saveOrUpdate(agentpic);
}catch(Exception e){
e.printStackTrace();
message = "图片添加失败";
throw new BusinessException(e.getMessage());
}
j.setMsg(message);
return j;
}