requesthandler.java

一个完整的代码管理系统的源代码

/*
 * Copyright (c) 2007-2010 Tanming1003 Inc.
 * All rights reserved.
 * 
 * tanming1003<[e-mail]>
 * 
 * 
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * Redistributions of source code must retain the above copyright 
 * notice, this list of conditions and the following disclaimer. 
 * Redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution. 
 * Neither the name of tanming1003 nor the names of its contributors 
 * may be used to endorse or promote products derived from this 
 * software without specific prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
 * REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 */
package hunnu.edu.cn.product.common.upload;

import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import java.util.StringTokenizer;

/**
 * @author [e-mail]
 * @date Oct 14, 2008
 * @time 9:06:39 PM
 * @project_name Product
 * @package_name hunnu.edu.cn.product.upload
 * @file_name    Context.java
 * @version      1.0
 */
public abstract class RequestHandler
{   
    protected List<FileItem> fileItems;
    protected Context context;
    protected String contentType;
    protected String boundary;
	protected String lastboundary;
	protected Hashtable<String,Object> fields;
	
	public RequestHandler()
	{
		super();
	}
    
    public RequestHandler(Context context)
    {
    	this.context=context;
    }
    
    public void setContext(Context context)
    {
    	this.context=context;
    }
    
    public Context getContext()
    {
    	return this.context;
    }

	public List<FileItem> getFileItems()
	{
		return fileItems;
	}

	public void setFileItems(List<FileItem> fileItems)
	{
		this.fileItems = fileItems;
	}
	
	public void addFileItem(FileItem item)
	{
		if(this.fileItems==null)
			this.fileItems=new ArrayList<FileItem>();
		fileItems.add(item);
	}
	
	public void addField(String key,Object value)
	{
		if(this.fields==null)
			this.fields=new Hashtable<String,Object>();
		fields.put(key,value);
	}
	
	public String getContentType() throws Exception
	{
		String contentType=this.context.getContentType();
		System.out.println(contentType);
		StringTokenizer token=new StringTokenizer(contentType,";");
		List<String> tokens=new ArrayList<String>();
		while(token.hasMoreTokens())
		{
			String element=(String)token.nextToken();
			tokens.add(element);
		}
		if(tokens.size()==0)
			throw new Exception("没有选择文件！请先选择要上传的文件.......");
		if(!(((String)tokens.get(0))).equals("multipart/form-data"))
			throw new Exception("该文件不是multipart/form-data格式，不能上传....... ");
		this.setContentType((String)tokens.get(0));
		String s=(String)tokens.get(1).substring("boundary=".length()+1);
		this.setBoundary("--"+s);
		this.setLastBoundary("--"+s+"--");
		return tokens.get(0);
	}
	
	public void setBoundary(String boundary)
	{
		this.boundary=boundary;
	}
	
	public void setContentType(String contentType)
	{
		this.contentType=contentType;
	}
	
	public void setLastBoundary(String lastboundary)
	{
		this.lastboundary=lastboundary;
	}
	
	public String getBoundary()
	{
		return this.boundary;
	}
	
	public String getLastBoundary()
	{
		return this.lastboundary;
	}
    
    public abstract void parseRequest();

	public Hashtable<String, Object> getFields() 
	{
		return fields;
	}

	public void setFields(Hashtable<String, Object> fields) 
	{
		this.fields= fields;
	}
}