ajaxfileupload上传图片抱java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
ajaxfileupload上传图片抱java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
使用springmvc以及spring的标签，jquery1.7.1
尝试过在表单添加enctype="multipart/form-data"，但这样在提交表单时就传不了参数

页面表单

<form:form id="inputForm" modelAttribute="clazz" action="${ctx}/sys/clazz/save" method="post">
<input type="hidden" name="id" value="${clazz.id}"/>
<fieldset class="prepend-top">

<legend>班级管理</legend>

<div id="messageBox" class="error" style="display:none">输入有误，请先更正。</div>
<table>
<tr>
<td><label for="name" class="field">班级名称:</label></td>
<td><input id="name" name="name" type="text" value="${clazz.name}" class="required"/></td>
</tr>
<tr>
<td><label for="description" class="field">班级简介:</label></td>
<td><textarea id="description" name="description" style="width:550px;height:45px;" >${clazz.description}</textarea></td>
</tr>
<tr>
<td><label for="culture" class="field">班级文化:</label></td>
<td><textarea id="culture" name="culture" style="width:550px;height:45px;">${clazz.description}</textarea></td>
</tr>
<tr>
<td><label for="teacherWords" class="field">教师心语:</label></td>
<td><textarea id="teacherWords" name="teacherWords" style="width:550px;height:45px;">${clazz.description}</textarea></td>
</tr>
<tr>
<td><label for="name" class="field">班级图片:</label></td>
<td>
<img id="imgUrl" src="${clazz.iconUrl}" width="80" height="60" />
<input type="hidden" value="${clazz.iconUrl}" id="iconUrl" name="iconUrl" />
<input id="filePath" type="file" />
<span style="color:red;font-size:8;">只能上传jpg、png、gif格式的图片</span>
<input type="button" value="上  传 " onclick="uploadPhoto();" />
</td>
</tr>
</table>
</fieldset>
<div>
<input id="submit" class="button" type="submit" value="提 交"/> 
<input id="cancel" class="button" type="button" value="返 回" onclick="history.back()"/>
</div>
</form:form>

JS代码

function uploadPhoto() {
var filePath = $("#filePath").val();
if(filePath == null) {
alert("请先选择文件再上传！");
return;
}

var suffix = filePath.substring(filePath.length-3, filePath.length);
if(suffix != "jpg" && suffix != "png" && suffix != "gif") {
alert("请上传jpg、png、gif格式的图片！");
return;
}

$.ajaxFileUpload( {
url : context + "/sys/upload",
secureuri : false,
fileElementId : "filePath",
dataType : "json",
success : function(data, status) {
var url = context + "/upload/" + data.result + "." +suffix;
$("#imgUrl").attr('src', url); 
 
$("#iconUrl").attr('value', url);
},
error : function(data, status, e) {
alert(" upload error: " + data + " Status: " + status + " e: " + e);
}
});
}

后台java代码

@Controller
@RequestMapping("/sys")
public class UploadController {

@RequestMapping(value = "/upload", method = RequestMethod.POST)
@ResponseBody
public String create(RedirectAttributes redirectAttributes, HttpServletRequest request) {

String userPath = request.getSession().getServletContext().getRealPath("/") + "/upload";
System.out.println("userUploadPath: " + userPath);
File attachPath = new File(userPath);

if(!attachPath.exists()) {
attachPath.mkdir();
}

UploadHelper helper = new UploadHelper();
helper.setTmpPath(userPath);
helper.setSavePath(userPath);
List<String> resultList = new ArrayList<String>();
String result = "";
Map<String,String> map = new HashMap<String,String>();
try {
resultList = helper.handleUplodFile(request);
map.put("result", resultList.get(0));
result = "{\""+ "result" + "\":\"" + resultList.get(0) + "\"}";
System.out.println("result: " + result);
} catch (FileUploadException e) {
map.put("result", e.getMessage());
e.printStackTrace();
} catch (IOException e) {
map.put("result", e.getMessage());
e.printStackTrace();
}
return result;
}
}

--------------------------------
各位大哥大姐，又遇到过类似的没，帮忙一下咯，在此先谢过了
ajaxfileupload 数组越界
[解决办法]
form上加一个enctype="multipart/form-data"看下行不行
[解决办法]
你给file加一个name属性，我上次碰到过一次没有给file加name，上传不了文件。
[解决办法]
这是我以前写过的，看一下对你有没有用。

boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
try {
FileItemFactory factory = (FileItemFactory) new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> items = upload.parseRequest(request);// 得到所有的文件
Iterator<FileItem> itr = items.iterator();
while (itr.hasNext()) {// 依次处理每个文件
FileItem item = (FileItem) itr.next();
File savedFile = ......;
item.write(savedFile);
}
......