做项目是需要将本地图片上传到服务器，可是tiny_mce自带的image插件不能很好的实现， tiny_mce需要动的输入图片地址，这个地址还得是服务器上的地址。所以不满足需要，需要改进。

通常的办法就是使用ajax把图片提交到服务器，然后返回图片在服务器上的地址，然后再把返回的地址写到地址栏里，这就ok了。

下面给出我写的代码：

如果你不懂ajaxfileupload请看http://www.phpletter.com/Our-Projects/AjaxFileUpload/

jsp页面：需要引入jquery.js 和ajaxfileupload.js,注意jquery.js需要放在前面，如果放在后面的话，不会执行下面的方法。

<script type="text/javascript" src="../../../js/jquery.js"></script><script type="text/javascript" src="../../utils/ajaxfileupload.js"></script>

<script  type="text/javascript">function uploadFiles() {$.ajaxFileUpload({           url:'http://localhost:8080/fangdo/admin/uploadPhoto.action',        secureuri:false,fileElementId:'file',dataType: 'json',success: function (result, statu) {    if (result.status == 'success'){$("#src").val(result.src);ImageDialog.showPreviewImage(result.src);}else {alert(result.status);}},error: function (result, status, e) {    alert(e);}})}
</script>

<tr><td><a href="#" onClick="uploadFiles();"><script>document.write('\文件上传')</script></a></td>                          <td><input style="WIDTH: 250" id="file" name="file" type="file"></td>
</tr>

action中的方法：

// photo uploadpublic void uploadPhoto() throws ActionException {String realDir = getSession().getServletContext().getRealPath("");HttpServletRequest request = ServletActionContext.getRequest();String contextpath = request.getContextPath();String basePath = request.getScheme() + "://" + request.getServerName()+ ":" + request.getServerPort() + contextpath + "/";String status = "error";try {String filePath = "uploads";String imagePath = "image" ;String realPath = realDir + "\\" + filePath+"\\"+imagePath;// 判断路径是否存在，不存在则创建File dir = new File(realPath);if (!dir.isDirectory())dir.mkdir();Check that we have a file upload requestif (ServletFileUpload.isMultipartContent(request)) {//为什么要判断看后面注                 DiskFileItemFactory dff = new DiskFileItemFactory();dff.setRepository(dir);dff.setSizeThreshold(1024000);Create a new file upload handlerServletFileUpload servletFileUpload = new ServletFileUpload(dff);FileItemIterator fileItemIterator = null;// Parse the requestservletFileUpload.setHeaderEncoding("UTF-8"); // 设置编码，因为我的jsp页面的编码是utf-8的fileItemIterator = servletFileUpload.getItemIterator(request);String tilte = "";// 标题String url = "";String fileName = "";String realFileName = "";while (fileItemIterator.hasNext()) {FileItemStream fis = fileItemIterator.next();try {if (!fis.isFormField() && fis.getName().length() > 0) {fileName = fis.getName();Pattern reg = Pattern.compile("[.]jpg|png|jpeg|gif$");Matcher matcher = reg.matcher(fileName);if (!matcher.find()) {status = "文件格式不对";break;}realFileName = new Date().getTime()+ fileName.substring(fileName.lastIndexOf("."),fileName.length());url = realPath + "\\" + realFileName;BufferedInputStream in = new BufferedInputStream(fis.openStream());FileOutputStream fous = new FileOutputStream(new File(url));BufferedOutputStream out = new BufferedOutputStream(fous);Streams.copy(in, out, true);status="success";} /*else {String fname = fis.getFieldName();if (fname.indexOf("pictitle") != -1) {BufferedInputStream in = new BufferedInputStream(fis.openStream());byte c[] = new byte[10];int n = 0;while ((n = in.read()) != -1) {tilte = new String(c, 0, n);break;}}}
*/} catch (IOException e) {e.printStackTrace();}}HttpServletResponse respone = ServletActionContext.getResponse();respone.setContentType("text/html");respone.setCharacterEncoding("UTF-8");respone.setStatus(200);String retxt = "{src:'" +  contextpath +"/"+ filePath + "/"+imagePath+"/"+ realFileName + "',status:'"+status+"'}";respone.getWriter().print(retxt);}} catch (Exception e) {e.printStackTrace();}}

配置文件：

<action name="uploadPhoto" class="com.fangdo.action.CmsTitleAction" method="uploadPhoto"></action>

注：1、检查request是否是一个上传请求

// Check that we have a file upload request
boolean isMultipart = ServletFileUpload.isMultipartContent(request);

静态方法isMultipartContent代码：就是判断contentType是否是multipart/

这就是为什么form类型要设成multipart/form-data吧

public static final boolean isMultipartContent(HttpServletRequest request) {if (!"post".equals(request.getMethod().toLowerCase())) {return false;}String contentType = request.getContentType();if (contentType == null) {return false;}if (contentType.toLowerCase().startsWith(MULTIPART)) {return true;}return false;}

public static final String MULTIPART = "multipart/";