linkpic.java

基于struct结构的jsp

package com.ntsky.bbs.file;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.PageContext;
import org.apache.log4j.Logger ;

import com.ntsky.bbs.file.FILE;
import com.ntsky.xml.bbs.XMLCreator;
import com.ntsky.xml.bbs.LinkXML;
/**
 * <p>Title: Ntsky OpenSource BBS</p>
 * <p>Description: 链接图片的上传</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: WWW.FM880.COM</p>
 * @author 姚君林
 * @version 1.0
 */

public class LinkPic implements FILE{

    private String fileDir = null;
    private String fileName = null;
    private String picPath = null;
    private String contextPath = null;
    private FileConfig fileConfig = null;
    private XMLCreator xmlCreator = XMLCreator.getInstance();
    private LinkXML linkXML = xmlCreator.getlinkXML();
    private final static Logger logger = Logger.getLogger(LinkPic.class);

    public LinkPic(){
        fileConfig = xmlCreator.getFileXML().getFileXMLInfo("linkPic");
    }

    /**
     * 文件目录
     */
    public void setFileDir(String fileDir){
        this.fileDir = fileDir;
    }

    /**
     * 文件名
     */
    public void setFileName(String fileName){
        this.fileName = fileName;
    }
    /**
     * 当由系统选择路径时候servletContext对应的路径(jsp)
     */
    public void setContextPath(PageContext pageContext){
        contextPath = pageContext.getServletContext().getRealPath("/");
        System.out.println("contextPath = " + contextPath);
        this.contextPath = contextPath;
    }

    /**
     * 附加的方法用于jsp中显示链接图片
     */
    public void setDataPicPath(String picPath){
        this.picPath = picPath;
    }
    public String getDataPath(){
        return picPath;
    }
    /**
     * 执行上传(保证同时只有一个上传)
     */
    public synchronized int upload(HttpServletRequest request){
        Upload upload = new UploadService();
        upload.setFileDir(fileDir);
        upload.setContextPath(contextPath);
        upload.setFileConfig(fileConfig);
        try {
            int isSuccess = upload.readWriteFile(request);
            setDataPicPath(upload.getDataFilePath());
            return isSuccess;
        }
        catch (Exception ex) {
            logger.info("上传链接图片发生错误 " + ex.getMessage());
        }
        return 0;
    }
}