CKEditor图片上传实现详细步骤(使用Struts 2)
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。
“预览”中有一大堆鸟语,看得很不爽。可以打开ckeditor/plugins/image/dialogs/image.js文件,搜索"b.config.image_previewText"就能找到这段鸟语了,(b.config.image_previewText||'')单引号中的内容全删了。
下面研究图片上传。
step 1:
首先,还是image.js这个文件,搜索“upload”可以找到这一段
id:'Upload',hidden:
实际上上传功能被隐藏了,把上面的true改成false,再打开编辑器,就能找到上传功能了。
step 2:
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。可以在ckeditor/config.js中配置。
加入:
config.filebrowserUploadUrl="actions/ckeditorUpload";
"ckeditorUpload"是请求的URL,也就是点击这个按钮就会post到ckeditorUpload地址进行处理,这里指向的是Struts 2的一个Action
- <package name="actions" extends="struts-default" namespace="/actions">
- <action name="ckeditorUpload" class="com.xxx.CkeditorUpload ">
- </action>
- </package>
step 3:
文件上传的控件相当于<input type="file" name="upload" .../>,其name是”upload”,知道了name那么就可以在Action中获取这个文件。
- private File upload; //文件
- private String uploadContentType; //文件类型
- private String uploadFileName; //文件名
以上三个私有变量都要有set方法。如果不了解的话可以先学习一下Struts
2文件上传。
step 4:
如果上传的图片格式不正确,可以在上传界面进行提示。
这个提示不是ckeditor提示的,要在Action中响应。
- String callback = ServletActionContext.getRequest().getParameter("CKEditorFuncNum");
- if([判断条件]){
- 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;
- }
step 5:
这段代码是Struts 2上传图片的核心代码,把图片上传后保存在项目的某个目录下,并随机重命名。
step 6:
图片上传成功,在目录下也可以看到图片,至此图片上传成功。但是如何将图片发到编辑器中呢?
点“确定”按钮会有以下提示。
到这里,要在Action中返回一段JS脚本。
有了这段代码,图片上传成功后,根据这里的
"img/postImg/" + filename
相对地址,就可以使用这个图片,直接转到“图像”页面。
附:Struts 2 Action代码
-
package com.nos.java.action.teacher;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.commons.lang.StringUtils;
import org.apache.struts2.ServletActionContext;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;
import org.springframework.beans.factory.annotation.Autowired;
import org.springside.modules.orm.hibernate.Page;
import com.nos.base.action.BaseAction;
import com.nos.base.pojo.MyVisit;
import com.nos.base.pojo.UserVo;
import com.nos.commons.util.ConstComm;
import com.nos.commons.util.InterFaceConstComm;
import com.nos.commons.util.LoggerUtils;
import com.nos.commons.util.PubTool;
import com.nos.commons.util.ResolveXml;
import com.nos.java.action.downl.IcpInformatAction;
import com.nos.java.pojo.Pro;
import com.nos.java.pojo.ProModule;
import com.nos.java.pojo.Task;
import com.nos.java.service.icp.IProModuleService;
import com.nos.java.service.icp.IProService;
import com.nos.java.service.icp.ISystemConfigService;
import com.nos.java.service.icp.ITaskService;
import com.nos.java.utils.WriteUtils;
import com.nos.java.vo.CompanyVo;
import com.nos.java.vo.ZtreeVo;
-
@SuppressWarnings("serial")
@Results({
@Result(name = "list", location = "task_list.jsp"),
@Result(name = "edit", location = "task_edit.jsp")
})
public class TaskManagerAction extends BaseAction{ -
private File upload; //文件
private String uploadContentType; //文件类型
private String uploadFileName; //文件名
// private String imgeArray [] = {".bmp", ".gif", ".jpe", ".jpeg", ".jpg", ".png"};
private static List<String> imgList = new ArrayList<>();
static{
imgList.add(".bmp");
imgList.add(".gif");
imgList.add(".jpe");
imgList.add(".jpeg");
imgList.add(".jpg");
imgList.add(".png");
} -
public void uploadImg() throws IOException{
String postfix = uploadFileName.substring(uploadFileName.lastIndexOf("."));
boolean flag = imgList.contains(postfix);
System.out.println(flag);
HttpServletResponse response = ServletActionContext.getResponse();
HttpServletRequest request = ServletActionContext.getRequest();
response.setContentType("text/html;charset=utf-8");
// ServletOutputStream out = response.getOutputStream();
PrintWriter out = response.getWriter();
String callback =ServletActionContext.getRequest().getParameter("CKEditorFuncNum");
if(!flag){
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/.jpe/.png文件)');");
// out.println("window.parent.CKEDITOR.tools.callFunction(" + callback
// + ",' '," + "'\u6587\u4ef6\u683c\u5f0f\u4e0d\u6b63\u786e\uff08\u5fc5\u987b\u4e3a\u002e\u006a\u0070\u0067\u002f\u002e\u0067\u0069\u0066\u002f\u002e\u0062\u006d\u0070\u002f\u002e\u0070\u006e\u0067\u6587\u4ef6\uff09');");
out.println("</script>");
return;
}
//按时间保存图片
Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH) + 1;
int day = calendar.get(Calendar.DAY_OF_MONTH);
//获取保存时间
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String uploadDate = sdf.format(new Date());
String uploadPath = ServletActionContext.getServletContext().getRealPath("/uploadImages") + "\\" + year;
// + "\\" + month + "\\" + day; //取得真实路径
if(month < 10){
uploadPath = uploadPath + "\\0" + month;
}else {
uploadPath = uploadPath + "\\" + month;
}
if(day < 10){
uploadPath = uploadPath + "\\0" + day;
}else {
uploadPath = uploadPath + "\\" + day;
}
File relPath = new File(uploadPath);
if(!relPath.exists()){
relPath.mkdirs();
}
File saveFilePath = new File(relPath,new Date().getTime() + postfix);
String imagePath = saveFilePath.getPath();
int index = imagePath.indexOf("uploadImages");
imagePath = imagePath.substring(index);
InputStream is = new FileInputStream(upload);
OutputStream os = new FileOutputStream(saveFilePath);
byte[] buffer = new byte[1024];
int length = 0;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
is.close();
os.close();
// String projectName = request.getContextPath();
imagePath = request.getScheme()+"://"+request.getLocalAddr()+":"+request.getServerPort()+request.getContextPath()+"/"+imagePath;
// imagePath = (imagePath).replaceAll("\\\\", "\\\\\\\\");
imagePath = (imagePath).replaceAll("\\\\", "/");
out.println("<script type=\"text/javascript\">");
out.println("window.parent.CKEDITOR.tools.callFunction("+ callback + ",'" +imagePath + "','')");
out.println("</script>");
} -
}