data.java~15~

新闻发布系统

package dsp.web;

/**
 * <p>Title: DSP实验室</p>
 * <p>Description: DSP教学网
 *                 数据相关操作
 * </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author 李艳生
 * @version 1.0
 */

import java.io.*;
import java.sql.*;
import dsp.utils.*;
import java.util.*;
import dsp.database.*;

public class Data {
	//文章的标题
	private String title;
	//作者
	private String author;
	//文章的ID号
	private int id;
	//文章的内容
	private String content;

	//图片文件名
	private String imgfile;
	//文章的来源
	private String source;
	//文件大小
	private int size;
	//文件内容简介
	private String information;
	//文件名
	private String filename;

	private boolean status;
	private String msg;
	//分隔符
	private String s= File.separator;

	public Data() {
		title = "";
		author = "";
		id = 0;
		content = "";
		source = "";
		imgfile = "";
		status = false;
		msg = "";
	}
	public String getAuthor() {
		return author;
	}
	public void setAuthor(String author) {
		this.author = author;
	}
	public String getContent() {
		return content;
	}
	public void setContent(String content) {
		this.content = content;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getMsg() {
		return msg;
	}
	public String getSource() {
		return source;
	}
	public void setSource(String source) {
		this.source = source;
	}
	public boolean isStatus() {
		return status;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}

	public String getImgfile() {
		return imgfile;
	}
	public void setImgfile(String imgfile) {
		this.imgfile = imgfile;
	}
	public String getInformation() {
		return information;
	}
	public void setInformation(String information) {
		this.information = information;
	}
	public int getSize() {
		return size;
	}
	public void setSize(int size) {
		this.size = size;
	}
	public String getFilename() {
		return filename;
	}
	public void setFilename(String filename) {
		this.filename = filename;
	}



	/** 读取模板文件
	 *  pathName：主目录
	 *  fileName:模板文件
	 */
	public synchronized String readTemplate(String pathName, String fileName, String flag[]) throws IOException{
		String con = null;
		pathName += "web" + s + "admin" + s + "templates" +s + fileName;
		FileInputStream in = new FileInputStream(pathName);
		int len = in.available();
		byte template[] = new byte[len];
		in.read(template);
		in.close();
		con = new String(template);

		//替代模板
		con = ReplaceAll.replace(con, flag[0], title);
		con = ReplaceAll.replace(con, flag[1], author);
		con = ReplaceAll.replace(con, flag[2], GetDate.getStringDate());
		con = ReplaceAll.replace(con, flag[3], source);
		con = ReplaceAll.replace(con, flag[4], content);

		//con = con.replaceAll(flag[0], title);
		//con = con.replaceAll(flag[1], author);
		//con = con.replaceAll(flag[2], GetDate.getStringDate());
		//con = con.replaceAll(flag[3], source);
		//con = con.replaceAll(flag[4], content);

		return con;
	}


	/** 生成SHTML页面
	 *  path:主目录
	 */
	public void genShtml(String con, String pathName) throws IOException,ClassNotFoundException,SQLException{
		pathName += "web" + s + "articles" + s;
		Calendar calendar = Calendar.getInstance();
		String fileName = String.valueOf(calendar.getTimeInMillis()) +".shtml";
		pathName += calendar.get(Calendar.YEAR) + s + (calendar.get(Calendar.MONTH)+1) + s + calendar.get(Calendar.DAY_OF_MONTH);

		//shtml相关信息写入数据库
		String path = calendar.get(Calendar.YEAR) + "/" +
			(calendar.get(Calendar.MONTH)+1) + "/" +
			calendar.get(Calendar.DAY_OF_MONTH) + "/" +
			fileName;
		addNews(path);

		if(!status){
			if(!imgfile.equals("")){
				File img = new File(pathName + "web" + s + "articles" +
									s + "images" + s , imgfile);
				if (img.exists()) {
					img.delete();
				}
			}
			status = false;
			return;
		}

		File f1 = new File(pathName);
		if(!f1.exists()){
			f1.mkdirs();
		}
		FileOutputStream fos = new FileOutputStream(pathName + s + fileName);
		byte contentByte[] = con.getBytes();
		fos.write(contentByte);
		fos.close();


		status = true;
	}

	/** shtml相关信息写入数据库
	 *
	 */
	public void addNews(String newsfile) throws ClassNotFoundException,SQLException{
		Operation conn = new Operation();
		String sql = "SELECT * FROM web_data WHERE title='" + title +"'";
		ResultSet rs = null;
		try{
			rs = conn.query(sql);
			if(rs.next()){
				status = false;
				msg = "你要添加的新闻已经存在！";
				return;
			}

			sql = "INSERT INTO web_data(class, author, title, newsfile,date,imgflag, imgfile) " +
				"VALUES ("+id+", '"+author+"','"+title+"','"+newsfile+"','"+GetDate.getStringDate()+"',0, '')";

			if(!imgfile.equals("")){
				sql = "INSERT INTO web_data(class, author, title, newsfile,date,imgflag, imgfile) " +
					"VALUES ("+id+", '"+author+"','"+title+"','"+newsfile+"','"+GetDate.getStringDate()+"',1, '"+imgfile+"')";
			}


			conn.update(sql);
			status = true;
		}
		catch(Exception e){
			status = false;
			msg = e.getMessage();
		}
		finally{
			conn.closestmt();
			conn.closeconn();
		}
	}

	/** 删除文章(包括该文章的相关图片)
	 *  path:主目录
	 *  id:文章的ID
	 */
	public void delFiles(String path, int id) throws ClassNotFoundException,SQLException,IOException{
		Operation conn = new Operation();
		String sql = "SELECT * FROM web_data WHERE id=" + id;
		ResultSet rs = null;
		String news = ""; //文章文件
		String img = ""; //图片文件
		int iflag =0;
		int b = 0;


		try{
			rs = conn.query(sql);
			rs.next();
			news = rs.getString("newsfile");
			img = rs.getString("imgfile");
			iflag = rs.getInt("imgflag");
			b = rs.getInt("flag");

			status = true;
		}
		catch(Exception e){
			status = false;
			msg = e.getMessage();
		}
		finally{
			conn.closestmt();
			conn.closeconn();
		}

		if(!status)
			return;
		if(b == 0){
			path += "web" + s + "articles" + s;
		}
		else{
			path += "web" + s + "resources" + s;
		}
		File nf = new File(path + news);
		if(nf.exists()){
			nf.delete();
		}
		if(iflag != 0){
			String imgfiles[] = new String[100];
			imgfiles = img.split("+");
			File imgf = null;
			for(int i = 0; i < imgfiles.length; i++){
				imgf = null;
				imgf = new File(path + "images" + s + imgfiles[i]);
				if (imgf.exists()) {
					imgf.delete();
				}
			}
		}

		status = true;
	}

	/** 删除数据库中的文章信息
	 *  path:主目录
	 *  id:文章的ID
	 */
	public void delNews(String path, int id) throws ClassNotFoundException,SQLException,IOException{
		Operation conn = new Operation();
		String sql = "DELETE FROM web_data WHERE id=" + id;

		try{
			conn.update(sql);
			status = true;
		}
		catch(Exception e){
			status = false;
			msg = e.getMessage();
		}
		finally{
			conn.closestmt();
			conn.closeconn();
		}
	}

	/** 删除文章
	 *
	 */
	public void del(String path, int id) throws ClassNotFoundException,SQLException,IOException{
		delFiles(path, id);
		delNews(path, id);
	}

	/** 添加文件
	 *
	 */
	public void addFile() throws ClassNotFoundException, SQLException{
		Operation conn = new Operation();
		String sql = "INSERT INTO web_data(class, title, newsfile, date,flag, size, information) " +
			"VALUES ("+id+",'"+title+"','"+filename+"','"+GetDate.getStringDate()+"',1, "+size+",'"+information+"')";

		try{
			conn.update(sql);
			status = true;
		}
		catch(Exception e){
			status = false;
			msg = e.getMessage();
		}
		finally{
			conn.closestmt();
			conn.closeconn();
		}
	}
}