java使用CKEditor实现图片上传功能

java如何使用CKEditor实现图片上传功能，具体内容如下

1.根据实际需要下载指定的CKEditor

2.删除文件ckeditor/plugins/image/dialogs/image.js预览框中文本内容，并修改hidden属性值为显示上传选项卡

删除image.js中包含在双引号中的上述文本

将image.js中的hidden属性值改为0

3.修改ckeditor/config.js文件，配置“上传到服务器”按钮调用的controller接口

4.“上传到服务器”按钮调用的controller级别的接口

@Controller
@RequestMapping("publicutil")
public class PublicUtilController { 

@RequestMapping(value = "uploadImage")
private void uploadImage(HttpServletRequest request, HttpServletResponse response, HttpSession session,@RequestParam MultipartFile[] upload) { 

 response.setCharacterEncoding("UTF-8");
 PrintWriter out=null;
 try {
  out = response.getWriter();
 } catch (IOException e1) {
  logger.error("response.getWriter()异常="+e1);
  e1.printStackTrace();
 }
 String callback = request.getParameter("CKEditorFuncNum"); 

 // 获得response,request
 Map<String, Object> m = new HashMap<String, Object>(); 

 if (!ServletFileUpload.isMultipartContent(request)) {
  m.put("error", 1);
  m.put("message", "请选择文件!");
  //return m;
  logger.info("请选择文件!");
 } 

 String originalFileName=null;//上传的图片文件名
 String fileExtensionName=null;//上传图片的文件扩展名
 for (MultipartFile file : upload) {
  if (file.getSize()> 10*1024* 1024) {
   out.println("<script type=\"text/javascript\">");
   out.println("window.parent.CKEDITOR.tools.callFunction(" + callback
      + ",''," + "'文件大小不得大于10M');");
   out.println("</script>"); 

  } 

  originalFileName=file.getOriginalFilename();
  logger.info("上传的图片文件名="+originalFileName);
  fileExtensionName= originalFileName.substring(
  originalFileName.lastIndexOf(".") ,originalFileName.length()).toLowerCase();
  logger.info("图片文件扩展名="+fileExtensionName); 

  String[] imageExtensionNameArray= WebsiteConstant.IMAGE_EXTENSION_NAME_ARRAY; 

  String allImageExtensionName="";
  boolean isContain=false;//默认不包含上传图片文件扩展名
  for(int i=0;i<imageExtensionNameArray.length;i++){
   if(fileExtensionName.equals(imageExtensionNameArray[i])){
    isContain=true;
   }
   if(i==0){
    allImageExtensionName+=imageExtensionNameArray[i];
   }else{
    allImageExtensionName+=" , "+imageExtensionNameArray[i];
   } 

  } 

  String newFileName=java.util.UUID.randomUUID().toString()+fileExtensionName;
  String uploadPath =WebsiteConstant.PIC_APP_FILE_SYSTEM_CKEDITOR_LOCATION;
  if(isContain){//包含
   File pathFile = new File(uploadPath);
   if (!pathFile.exists()) { // 如果路径不存在，创建
    pathFile.mkdirs();
   }
   try {
    FileUtils.copyInputStreamToFile(file.getInputStream(), new File(uploadPath ,newFileName));
//    InputStream is=file.getInputStream();
//    File toFile = new File(uploadPath, newFileName);
//    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();
   } catch (IOException e) {
    logger.error("FileUtils.copyInputStreamToFile uploadPath="+uploadPath+" newFileName ="+newFileName+" exception="+e);
   }
   String imageUrl=WebsiteConstant.PIC_APP_SERVER_URL+"images/ckeditor/"+newFileName;
   // 返回"图像信息"选项卡并显示图片 ,在对应的文本框中显示图片资源url
   out.println("<script type=\"text/javascript\">");
   out.println("window.parent.CKEDITOR.tools.callFunction(" + callback
      + ",'" +imageUrl + "','')");
   out.println("</script>"); 

  }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"+allImageExtensionName+"文件）');");
   out.println("</script>");
  } 

 }
 } 

}

<span style="font-size:14px;">public class WebsiteConstant { 

 public static String[] IMAGE_EXTENSION_NAME_ARRAY={".jpg",".jpeg",".png",".gif",".bmp"};
 public static String PIC_APP_SERVER_URL="http://localhost:8090/Picture/";
 public static String PIC_APP_FILE_SYSTEM_CKEDITOR_LOCATION="/Users/abc/Documents/tomcat/webapps/Picture/images/ckeditor/";
 public static final int SUCCESS = 1; // 操作成功
</span>

5.若是在Maven项目中使用的CKEditor，需要在pom.xml中添加如下代码：

<dependency>
 <groupId>com.ckeditor</groupId>
 <artifactId>ckeditor-java-core</artifactId>
 <version>3.5.3</version>
</dependency>

6.最终效果图

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。