gsdspdownload.java

一个日本流行的,功能较全的开源Web办公管理(Groupware)系统。

package jp.co.sjts.gsession.tools;


import java.io.File;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.FileNotFoundException;
import javax.servlet.http.HttpServletResponse;

/**
 * <p>僶僀僫儕僼傽僀儖僟僂儞儘乕僪僋儔僗
 * <p>僽儔僂僓偱昞帵弌棃傞暔偼丄昞帵偡傞
 *
 * @author   Satoru K   &lt;[e-mail]&gt;
 */
public class GSDspDownLoad{

    /** 僼傽僀儖 */
    private File file;
    /** 僼傽僀儖柤 */
	private String dstFilename;
    /** ContentType */
	private String contentType=null;

    /**
     * <p>僐儞僗僩儔僋僞
     *
     * @param   path            僷僗
     * @param   dstFilename     僼傽僀儖柤
     */
	public GSDspDownLoad(String path,String dstFilename){
		file = new File(path);
		this.dstFilename = dstFilename;
	}

    /**
     * <p>僐儞僗僩儔僋僞
     *
     * @param   path
     * @param   dstFilename
     * @param   contentType
     */
	public GSDspDownLoad(String path,String dstFilename,String contentType){
		file = new File(path);
		this.dstFilename = dstFilename;
		this.contentType = contentType;
	}

    /**
     * <p>ContentType傪僙僢僩偟傑偡丅
     *
     * @param contentType ContentType
     */
	public void setContentType(String contentType){
		this.contentType = contentType;
	}

    /**
     * <p>弌椡
     */
	public void write(HttpServletResponse res) throws GSException{
		try{
			BufferedInputStream in = new BufferedInputStream(new FileInputStream(file));
			BufferedOutputStream out = new BufferedOutputStream(res.getOutputStream());
			if(contentType!=null)
				res.setContentType(contentType);

			int i;
			while((i=in.read()) >= 0){
				out.write(i);
			}
			out.flush();
			in.close();
			out.close();
		}catch(FileNotFoundException e){
		}catch(IOException e){
		}
	}
}