newsaddbean.java

已完成的jsp％2BjavaBean％2BServlet实例有增删改查很好的mvc源代码

package admin.manageBean;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.transaction.Transaction;

public class NewsAddBean {
	
	private String newsTitle;
	private String newsContent;
	private String author;
	
	Calendar calendar = new GregorianCalendar();  
	//取系统时间的年
	public int getYear(){
		return calendar.get(Calendar.YEAR);  
	}
	//取系统时间的月
	public int getMonth(){				
		return calendar.get(Calendar.MONTH)+1; 	
	}
	//取系统时间的日
	public int getDay(){
		return calendar.get(calendar.DATE);
	}
	private String year = String.valueOf(this.getYear());
	private String month = String.valueOf(this.getMonth());
	private String day = String.valueOf(this.getDay());
	private String issueDate = year+"-"+month+"-"+day;

	public NewsAddBean() {
		init();
	}
	private void init(){
		try {
			Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
	}
	private Connection getConnection(){
		
		try {
			return DriverManager.getConnection("jdbc:odbc:news");
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return null;
	}
	public int newsAdd(){
		Connection cn=getConnection();
		PreparedStatement ps;
		
		String addStr="insert into news(newsTitle,newsContent,issueDate,author) values(?,?,?,?)";
		try {
			ps=cn.prepareStatement(addStr);
			ps.setString(1,this.getNewsTitle());
			ps.setString(2, this.getNewsContent());
			ps.setString(3, this.issueDate);
			ps.setString(4,this.getAuthor());
			ps.execute();	
			cn.commit();
			return 1;
		} catch (SQLException e) {
			e.printStackTrace();
			try {
				cn.rollback();
				return 0;
			} catch (SQLException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
		}finally{
			try {
				cn.close();
				cn=null;
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		return -1;
	}
	public String getAuthor() {
		return author;
	}
	public void setAuthor(String author) {
		this.author = author;
	}
	
	public String getNewsContent() {
		return newsContent;
	}
	public void setNewsContent(String newsContent) {
		this.newsContent = newsContent;
	}
	public String getNewsTitle() {
		return newsTitle;
	}
	public void setNewsTitle(String newsTitle) {
		this.newsTitle = newsTitle;
	}
}