CKEditor图片上传实现详细步骤(使用Struts 2)

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>");
}
}