文章摘要
本文介绍了名为`CkeditorUploadAction`的JavaServlet Action类，用于处理文件上传操作。该类的主要功能包括：
1. **上传验证**：在`execute()`方法中，首先验证上传的文件是否存在以及文件类型和格式是否符合要求（如`.jpg`、`.png`、`.gif`、`.bmp`等）。
2. **文件路径处理**：根据配置文件`wxConfig`获取保存路径，并确保该路径为有效目录。
3. **文件命名**：使用系统时间生成唯一文件名，并将文件扩展名与上传文件名结合，生成最终的文件路径。
4. **文件保存**：通过`InputStream`和`FileOutputStream`将上传文件写入目标路径。
5. **调用CKEditor工具**：在成功上传后，通过`callFunction`方法调用CKEditor的相应功能。
该类通过参数获取、路径处理和文件操作，实现了对上传文件的完整生命周期管理。
//CkeditorUploadAction类源码
public class CkeditorUploadAction extends ActionSupport {
private static final long serialVersionUID=1L;
private File upload;
private String uploadContentType;
private String uploadFileName;
//文件大小
private long fileSize;
//取文件路径
private String fileType;
public String getFileType() {
return fileType;
}
public void setFileType(String fileType) {
this.fileType=fileType;
}
public long getFileSize() {
return fileSize;
}
public void setFileSize(long fileSize) {
this.fileSize=fileSize;
}
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 {
try {
HttpServletResponse response=ServletActionContext.getResponse();
response.setContentType(“text/html;charset=UTF-8”);
PrintWriter out=response.getWriter();
String callback=ServletActionContext.getRequest().getParameter(“CKEditorFuncNum”);
//对文件进行校验
if(upload==null || uploadContentType==null || uploadFileName==null){
//out.print(“<font color=”red” size=”2″>*请选择上传文件</font>”);
String path=””;
String alt_msg=”*请选择上传文件”;
out.print(“<script type=’text/javascript’>window.parent.CKEDITOR.tools.callFunction(”
+ callback
+ “, ‘”
+ path
+ “‘ , ‘”
+ alt_msg
+ “‘);</script>”);
return null;
}
if ((uploadContentType.equals(“image/pjpeg”) || uploadContentType.equals(“image/jpeg”)) && (uploadFileName.substring(uploadFileName.length() – 4).toLowerCase().equals(“.jpg”)||uploadFileName.substring(uploadFileName.length() – 5).toLowerCase().equals(“.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
}else if((uploadContentType.equals(“image/x-png”) || uploadContentType.equals(“image/png”)) && uploadFileName.substring(uploadFileName.length() – 4).toLowerCase().equals(“.png”)){
}else if(uploadContentType.equals(“image/gif”) && uploadFileName.substring(uploadFileName.length() – 4).toLowerCase().equals(“.gif”)){
}else if(uploadContentType.equals(“image/bmp”) && uploadFileName.substring(uploadFileName.length() – 4).toLowerCase().equals(“.bmp”)){
}else{
//out.print(“<script language=”javascript”>alert(“*文件格式不正确（必须为.jpg/.gif/.bmp/.png文件）”);return false;</script>”);
String path=””;
String alt_msg=”*请选择图片文件格式（必须为.jpg/.jpeg/.gif/.bmp/.png文件）”;
out.print(“<script type=’text/javascript’>window.parent.CKEDITOR.tools.callFunction(”
+ callback
+ “, ‘”
+ path
+ “‘ , ‘”
+ alt_msg
+ “‘);</script>”);
return null;
}
if(upload.length() > this.getFileSize()){
//out.print(“<font color=”red” size=”2″>*文件大小不得大于”+this.getFileSize()/(1000*1024)+”m</font>”);
String path=””;
String alt_msg=”*请选择上传”+this.getFileSize()/(1000*1024)+”M以内的图片文件”;
out.print(“<script type=’text/javascript’>window.parent.CKEDITOR.tools.callFunction(”
+ callback
+ “, ‘”
+ path
+ “‘ , ‘”
+ alt_msg
+ “‘);</script>”);
return null;
}
String imagePath=””;
//imagePath路径的设置
WebApplicationContext wac=ContextLoader.getCurrentWebApplicationContext();
WxConfig wxConfig=(WxConfig)wac.getBean(“wxConfig”);
//if(fileType.equals(PubParaConstants.DC_CK_UPLOAD_PATTH_PARAM.DC_CK_UPLOAD_PATTH_PARAM_PROSELECT)) {
imagePath=wxConfig.getFilePath();
//}
//WxConfig wxConfig;
File directory=new File(imagePath);
if(!directory.isDirectory()) {
directory.mkdirs();
}
//将文件保存到项目目录下
InputStream is=new FileInputStream(upload);
Date date=new Date(); // 获得系统时间，用于生成文件名
long lTime=date.getTime();
String fileName=DateUtil.toStringNoInterval(date, 8)+”_”+lTime;
fileName +=FileUtil.getFileSuffix(uploadFileName);
File toFile=new File(imagePath, 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();
//设置返回“图像”选项卡
String callbackUrl=ServletActionContext.getRequest().getContextPath() +”/fckImageReader.servlet?fold=”+this.getFileType()+”&imageName=”+fileName;
out.println(“<script type=”text/javascript”>”);
out.println(“window.parent.CKEDITOR.tools.callFunction(” + callback + “,'”+ callbackUrl + “‘,”)”);
out.println(“</script>”);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}