FileUploadServlet 文件上传
package com.appdev.bsf.server.servlet;
importjava.io.File;
importjava.io.IOException;
importjava.util.Date;
importjava.util.HashMap;
importjava.util.Iterator;
importjava.util.List;
importjava.util.Map;
importjavax.servlet.ServletContext;
importjavax.servlet.ServletException;
importjavax.servlet.http.HttpServlet;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
importorg.apache.commons.fileupload.FileItem;
importorg.apache.commons.fileupload.FileItemFactory;
importorg.apache.commons.fileupload.FileUploadException;
importorg.apache.commons.fileupload.disk.DiskFileItemFactory;
importorg.apache.commons.fileupload.servlet.ServletFileUpload;
importorg.springframework.web.context.WebApplicationContext;
importorg.springframework.web.context.support.WebApplicationContextUtils;
importcom.appdev.bsf.common.client.datasource.DictionaryGwtRpcService;
importcom.ibm.icu.text.SimpleDateFormat;
publicclassFileUploadServletextendsHttpServlet{
privatestaticfinallongserialVersionUID=1L;
privateDictionaryGwtRpcServiceservice;
privateServletFileUploadupload;
privateStringyear;
privateStringmonth;
privateStringday;
@Override
publicvoidinit()throwsServletException{
FileItemFactoryfactory=newDiskFileItemFactory();
upload=newServletFileUpload(factory);
ServletContextapplication;
WebApplicationContextwac;
application=getServletContext();
wac=WebApplicationContextUtils.getWebApplicationContext(application);
service=(DictionaryGwtRpcService)wac.getBean("dictionaryGwtRpcServiceImpl");
Datedate=newDate();
SimpleDateFormatsdf=newSimpleDateFormat("yyyy-MM-dd");
String[]dateArr=sdf.format(date).split("-");
year=dateArr[0];
month=dateArr[1];
day=dateArr[2];
}
@Override
protectedvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,
IOException{
response.setContentType("text/html;charset=utf-8");
Integerid=null;
StringclsUrl=null;
Map<String,String>data=null;
try{
id=Integer.valueOf(request.getParameter("id"));
clsUrl=request.getParameter("clsUrl");
data=newHashMap<String,String>();
}catch(Exceptione){
e.printStackTrace();
}
List<?>items=null;
upload.setSizeMax(1024*1024*2);
try{
items=upload.parseRequest(request);
}catch(FileUploadExceptionex){
thrownewServletException(ex);
}
Iterator<?>iter=items.iterator();
while(iter.hasNext()){
FileItemitem=(FileItem)iter.next();
if(item.isFormField()==false){
operatorFile(item,id,clsUrl,data);
}
}
}
privatevoidoperatorFile(FileItemitem,Integerid,StringclsUrl,Map<String,String>data){
StringfileName=null;
//获得上传路径
Stringpath="/uploads/"+year+"/"+month+"/"+day;
StringsavePath=getServletContext().getRealPath(path);
//获得文件扩展名
Stringext=item.getName().substring(item.getName().lastIndexOf("."));
//取的file域的值的名字，不带路径
intpos=item.getName().lastIndexOf("\\");
StringfieldValue=item.getName().substring(pos+1);
//或直接保存成文件
//判断当天的文件夹是否存在,按年/月/日创建,如果不存在则创建
if(!newFile(savePath).isDirectory()){
newFile(savePath).mkdirs();
}
//判断是否有扩展名exe
if("exe".equals(ext)){
return;
}
Filefile=newFile(savePath,fieldValue);
try{
fileName=item.getFieldName();
//写文件
item.write(file);
//存路径
data.put(fileName,path+"/"+item.getName());
//数据库写值
service.updateFiledUrl(clsUrl,id,data);
}catch(Exceptione){
e.printStackTrace();
}//直接保存文件
}
}