最近做一個springmvc ajax多文件上傳,倒騰了下,查閱了部分資料搞定了!現在分享:
1.Spring mvc
a.xml配置:
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver" >
<!-- set the max upload size1MB 1048576 -->
<property name="maxUploadSize">
<value>52428800</value>
</property>
<property name="maxInMemorySize">
<value>2048</value>
</property>
</bean>
b. 服務器端接收解析 public void imgUpload(
MultipartHttpServletRequest multipartRequest,
HttpServletResponse response) throws Exception {
response.setContentType("text/html;charset=UTF-8");
Map<String, Object> result = new HashMap<String, Object>();
//獲取多個file
for (Iterator it = multipartRequest.getFileNames(); it.hasNext();) {
String key = (String) it.next();
MultipartFile imgFile = multipartRequest.getFile(key);
if (imgFile.getOriginalFilename().length() > 0) {
String fileName = imgFile.getOriginalFilename();
//改成自己的對象哦!
Object obj = new Object();
//Constant.UPLOAD_GOODIMG_URL 是一個配置文件路徑
try {
String uploadFileUrl = multipartRequest.getSession().getServletContext().getRealPath(Constant.UPLOAD_GOODIMG_URL);
File _apkFile = saveFileFromInputStream(imgFile.getInputStream(), uploadFileUrl, fileName);
if (_apkFile.exists()) {
FileInputStream fis = new FileInputStream(_apkFile);
} else
throw new FileNotFoundException("apk write failed:" + fileName);
List list = new ArrayList();
//將obj文件對象添加到list
list.add(obj);
result.put("success", true);
} catch (Exception e) {
result.put("success", false);
e.printStackTrace();
}
}
}
String json = new Gson().toJson(result,
new TypeToken<Map<String, Object>>() {
}.getType());
response.getWriter().print(json);
}
//保存文件
private File saveFileFromInputStream(InputStream stream, String path,
String filename) throws IOException {
File file = new File(path + "/" + filename);
FileOutputStream fs = new FileOutputStream(file);
byte[] buffer = new byte[1024 * 1024];
int bytesum = 0;
int byteread = 0;
while ((byteread = stream.read(buffer)) != -1) {
bytesum += byteread;
fs.write(buffer, 0, byteread);
fs.flush();
}
fs.close();
stream.close();
return file;
}
2.關於前端代碼
a.修改ajaxfileupload.js
先到官網下載該插件.
將源文件的createUploadForm的代碼替換如下:
createUploadForm: function(id, fileElementId, data)
{
//create form
var formId = 'jUploadForm' + id;
var fileId = 'jUploadFile' + id;
var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
if (data) {
for ( var i in data) {
jQuery(
'<input type="hidden" name="' + i + '" value="'
+ data[i] + '" />').appendTo(form);
}
}
for (var i = 0; i < fileElementId.length; i ++) {
var oldElement = jQuery('#' + fileElementId[i]);
var newElement = jQuery(oldElement).clone();
jQuery(oldElement).attr('id', fileElementId[i]);
jQuery(oldElement).attr('name', fileElementId[i]);
jQuery(oldElement).before(newElement);
jQuery(oldElement).appendTo(form);
}
//set attributes
jQuery(form).css('position', 'absolute');
jQuery(form).css('top', '-1200px');
jQuery(form).css('left', '-1200px');
jQuery(form).appendTo('body');
return form;
}
第一步高定
b. 頁面代碼
html:
<input type="button" value="添加附件" onclick="createInput('more');" />
<div id="more"></div>
js:這裏可以專門寫封裝類,以及給file加onchange事件判斷文件格式。由於時間有限,未修改var count = 1;
/**
* 生成多附件上傳框
*/
function createInput(parentId){
count++;
var str = '<div name="div" ><font style="font-size:12px;">附件</font>'+
' '+ '<input type="file" contentEditable="false" id="uploads' + count + '' +
'" name="uploads'+ count +'" value="" style="width: 220px"/><input type="button" value="刪除" onclick="removeInput(event)" />'+'</div>';
document.getElementById(parentId).insertAdjacentHTML("beforeEnd",str);
}
/**
* 刪除多附件刪除框
*/
function removeInput(evt, parentId){
var el = evt.target == null ? evt.srcElement : evt.target;
var div = el.parentNode;
var cont = document.getElementById(parentId);
if(cont.removeChild(div) == null){
return false;
}
return true;
}
下面是2個修改多file用的js,用於顯示和刪除,可以於上面的合併精簡代碼:
function addOldFile(data){
var str = '<div name="div' + data.name + '" ><a href="#" style="text-decoration:none;font-size:12px;color:red;" onclick="removeOldFile(event,' + data.id + ')">刪除</a>'+
' ' + data.name +
'</div>';
document.getElementById('oldImg').innerHTML += str;
}
function removeOldFile(evt, id){
//前端隱藏域,用來確定哪些file被刪除,這裏需要前端有個隱藏域
$("#imgIds").val($("#imgIds").val()=="" ? id :($("#imgIds").val() + "," + id));
var el = evt.target == null ? evt.srcElement : evt.target;
var div = el.parentNode;
var cont = document.getElementById('oldImg');
if(cont.removeChild(div) == null){
return false;
}
return true;
}
ajax上傳文件:function ajaxFileUploadImg(id){
//獲取file的全部id
var uplist = $("input[name^=uploads]");
var arrId = [];
for (var i=0; i< uplist.length; i++){
if(uplist[i].value){
arrId[i] = uplist[i].id;
}
}
$.ajaxFileUpload({
url:'xxxxx',
secureuri:false,
fileElementId: arrId, //這裏不在是以前的id了,要寫成數組的形式哦!
dataType: 'json',
data: {
//需要傳輸的數據
},
success: function (data){
},
error: function(data){
}
});
}
親們,一個spingmvc +ajax多文件上傳有搞定了,功能很簡單,有問題聯繫本人