ckeditor上传图片

ckeditor版本4.4.7

CKEditor的编辑器工具栏中有一项“图片域”，该工具可以贴上图片地址来在文本编辑器中加入图片，但是没有图片上传功能。

去掉预览中的英文，在ckeditor/config.js中加上一个配置项：

config.image_previewText = ' '; 注意引号里面一定要有个空格，不能是空字符串。

图片上传实现

第一步：

要开启图片上传功能。

找到ckeditor/plugins/image/dialogs/image.js这个文件，CTRL+F搜索下面一段JS：

id:'Upload',hidden:!0 把感叹号去掉

这个时候编辑器上已经有上传功能了

第二步：（这里用struct2实现上传）

下面是action的代码

package com.sdhf.eam.web.action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import com.sdhf.action._BaseAction;
public class CkeditorUploadAction extends _BaseAction{
	private File upload;  
    private String uploadContentType;  
    private String uploadFileName;  
  
    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;  
    }  
  
    public String execute() throws Exception {  
          
        HttpServletResponse response = ServletActionContext.getResponse();  
        response.setCharacterEncoding("GBK");  
        PrintWriter out = response.getWriter();  
  
        // CKEditor提交的很重要的一个参数  
        String callback = ServletActionContext.getRequest().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/jpeg  
            expandedName = ".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);  
        String uploadPath = ServletActionContext.getServletContext().getRealPath("/images/ckeditor");  
        String fileName = java.util.UUID.randomUUID().toString(); // 采用UUID的方式命名保证不会重复  
        fileName += expandedName;  
        File toFile = new File(uploadPath, fileName);  
        OutputStream os = new FileOutputStream(toFile);  
          
        // 文件复制到指定位置  
        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  
        out.println("<script type="text/javascript">");  
        out.println("window.parent.CKEDITOR.tools.callFunction(" + callback  
                + ",'"+ServletActionContext.getRequest().getContextPath()+"/images/ckeditor/"+ fileName + "','')"); // 相对路径用于显示图片  
        out.println("</script>");  
        return null;  
    }  
	
}

这里有几个注意的地方：

1、 String uploadPath = ServletActionContext.getServletContext().getRealPath("/images/ckeditor");

"/images/ckeditor" 为服务器存放的目录，目录一定要存在，不然会报错

2、

这个是上传完后前台显示的路径，即下图

如果路径没有设置好，预览就会没有图片显示，如图

第三步：写xml配置文件，我这里是spring+struct2

applicationContext.xml文件加上

<!-- ckeditor 图片上传action -->
	<bean id="ckeditorUpload" class="com.sdhf.eam.web.action.CkeditorUploadAction" parent="_baseAction"
		scope="prototype">
	</bean>

struts.xml文件加上

<!-- CKEditor 上传图片 -->
<action name="ckeditorUpload" class="ckeditorUpload" method="execute">  
</action>

第四步：

在ckeditor/config.js加上配置项

config.filebrowserUploadUrl = ctx+"/ckeditorUpload.action";

来自为知笔记(Wiz)