CKEditor实现图片上传

本人用的CKEditor版本为4.3 CKEditor配置和部署参考CKEditor4.x部署和配置。

CKEditor编辑器的工具栏中初始的时候应该是这样子的，没有图片上传按钮

并且预览中有一堆火星文，可以修改相应配置删除它。

第一种方法：打开ckeditor/plugins/image/dialogs/image.js文件，搜索“b.config.image_previewText”，(b.config.image_previewText||'')单引号中的内容全删了，注意别删多了。(由于ckeditor的很多js文件都是压缩过的，格式很难看，很容易删错，所以不推荐此种方法)

第二种方法：打开config.js文件，加入下面一句话

config.image_previewText=' '; //预览区域显示内容

下面研究图片上传

要想出现上传按钮，两种方法

第一种：还是刚才那个image.js
搜索“upload”可以找到这一段 id:'Upload',hidden:true，而我使用的4.3的是

id:"Upload",hidden:!0，反正改为false就行了，(遗憾的是此种方法对我这个版本不起作用)

第二种：打开config.js文件，加入下面一句话

config.filebrowserImageUploadUrl= "admin/UserArticleFileUpload.do"; //待会要上传的action或servlet

OK现在基本上是下面这个样子的了

上面的只是一个上传页面。也就相当于一个HTML的form表单，

要配置点击"上传到服务器上"按钮后请求的Action。已在ckeditor/config.js中配置。

就是上面的 config.filebrowserImageUploadUrl = "admin/UserArticleFileUpload.do";

可使用chrome审查元素查看代码

接下来就是action中的上传方法：

import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.io.PrintWriter;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts2.ServletActionContext;public class ImgUploadAction {private File upload; // 文件private String uploadContentType; // 文件类型private String uploadFileName; // 文件名/** * 图片上传 *  * @return * @throws IOException */public String imgUpload() throws IOException {// 获得response,requestHttpServletResponse response = ServletActionContext.getResponse();HttpServletRequest request = ServletActionContext.getRequest();response.setCharacterEncoding("utf-8");PrintWriter out = response.getWriter();// CKEditor提交的很重要的一个参数String callback = request.getParameter("CKEditorFuncNum");String expandedName = ""; // 文件扩展名if (uploadContentType.equals("image/pjpeg")|| uploadContentType.equals("image/jpeg")) {// IE6上传jpg图片的headimageContentType是image/pjpeg，而IE9以及火狐上传的jpg图片是image/jpegexpandedName = ".jpg";} else if (uploadContentType.equals("image/png")|| uploadContentType.equals("image/x-png")) {// IE6上传的png图片的headimageContentType是"image/x-png"expandedName = ".png";} else if (uploadContentType.equals("image/gif")) {expandedName = ".gif";} else if (uploadContentType.equals("image/bmp")) {expandedName = ".bmp";} else {out.println("<script type=\"text/javascript\">");out.println("window.parent.CKEDITOR.tools.callFunction(" + callback+ ",''," + "'文件格式不正确（必须为.jpg/.gif/.bmp/.png文件）');");out.println("</script>");return null;}if (upload.length() > 600 * 1024) {out.println("<script type=\"text/javascript\">");out.println("window.parent.CKEDITOR.tools.callFunction(" + callback+ ",''," + "'文件大小不得大于600k');");out.println("</script>");return null;}InputStream is = new FileInputStream(upload);//图片上传路径String uploadPath = ServletActionContext.getServletContext().getRealPath("/img/uploadImg");String fileName = java.util.UUID.randomUUID().toString(); // 采用时间+UUID的方式随即命名fileName += expandedName;File file = new File(uploadPath);if (!file.exists()) { // 如果路径不存在，创建file.mkdirs();}File toFile = new File(uploadPath, fileName);OutputStream os = new FileOutputStream(toFile);byte[] buffer = new byte[1024];int length = 0;while ((length = is.read(buffer)) > 0) {os.write(buffer, 0, length);}is.close();os.close();// 返回"图像"选项卡并显示图片  request.getContextPath()为web项目名 out.println("<script type=\"text/javascript\">");out.println("window.parent.CKEDITOR.tools.callFunction(" + callback+ ",'" + request.getContextPath() + "/img/uploadImg/" + fileName + "','')");out.println("</script>");return null;}public File getUpload() {return upload;}public void setUpload(File upload) {this.upload = upload;}public String getUploadContentType() {return uploadContentType;}public void setUploadContentType(String uploadContentType) {this.uploadContentType = uploadContentType;}public String getUploadFileName() {return uploadFileName;}public void setUploadFileName(String uploadFileName) {this.uploadFileName = uploadFileName;}}

config.js

CKEDITOR.editorConfig = function( config ) {     config.image_previewText=' '; //预览区域显示内容     config.filebrowserImageUploadUrl= "ImgUpload.action"; //要上传的action或servlet };

最后上传图片成功


PS：不同版本实现的方法与效果可能不太一样，只作参考。

项目完整源码下载:http://download.csdn.net/detail/itmyhome/7851265