java上传求求的方法

标签：java   upload   

首先封装一个Map,当Map可以一键多值

public class ArrayMap {
	
	private HashMap<String, List<String>> map = null ;  
	
	private static final long serialVersionUID = 7760971972716111286L;
	
	public ArrayMap(){
		map = new HashMap<String, List<String>>();
	}
	
	public List<String> put(String key, List<String> arg1) {
		return map.put(key, arg1);
	}
	
	public List<String> put(String key, String value) {
		List<String>values=map.get(key);
		if(values == null){
			values = new Vector<String>();
		}
		values.add( value );
		return map.put(key, values ) ; 
	}
	
	public String getItem(String key){
		List<String>values=map.get(key);
		if(Helper.isEmpty(values)){ 
			return null;
		}
		return values.get(0) ; 
	}
	
	public List<String> getItems(String key){
		return map.get(key) ; 
	}
}

然后每次请求后调用次方法。

public ArrayMap upload(HttpServletRequest request){
		ArrayMap map = new ArrayMap();
		ServletRequestContext requestContext = new ServletRequestContext(request);
		boolean isMultipart = ServletFileUpload.isMultipartContent( requestContext ) ;  
		if(isMultipart){
			try{
			 String basePath = "../goodImg/" + DateFormatUtils.format(Calendar.getInstance() , "yyyyMM") + "/" ;
			 FileItemFactory factory = new DiskFileItemFactory();
			 ServletFileUpload upload = new ServletFileUpload(factory);
			 List<?> fileItems = upload.parseRequest(request);
			 for(Object item : fileItems){
				 FileItem fileItem = (FileItem) item ; 
				 if(fileItem.isFormField()){
					 map.put( fileItem.getFieldName() , new String(TransformUtils.toString(fileItem.getString()).getBytes("ISO-8859-1") , "GBK") );
				 }else{
					 String filePath = request.getSession().getServletContext().getRealPath("/") ; 
					 String uploadName = TransformUtils.toString(fileItem.getName());
					 
					 if(!Helper.isEmpty(uploadName)){
						 int index = uploadName.lastIndexOf(".") ; 
						 String ext = ".jpg" ;
						 if(index != -1){
							 ext = uploadName.substring( index ) ;
						 }
						 
						 String fileName = basePath+TransformUtils.toString(System.currentTimeMillis()) + ext ;
						 
						 java.io.File file = new java.io.File(filePath + fileName); 
						 file.getParentFile().mkdirs() ; 
						 
						 FileUtil.write( fileItem.getInputStream() , new FileOutputStream( file )) ; 
						 
						 map.put( fileItem.getFieldName() , fileName ); 
					 }
				 }
			 }
			}catch(Exception e){
				e.printStackTrace() ;
			}
		}else{
			Enumeration<?> enumeration = request.getParameterNames(); 
			while(enumeration.hasMoreElements()){
				String name = TransformUtils.toString(enumeration.nextElement());
				String[]values = request.getParameterValues( name ) ; 
				if(null != values){
					for(String value : values ){
						map.put(name , value ) ; 
					}
				}
			}
		}
		return map;
	}

java上传求求的方法

标签：java   upload   

原文地址：http://blog.csdn.net/hfmbook/article/details/41348859