1. 專案介紹

專案包括首頁，列表頁，內容頁以及後臺管理四個部分。

2. 專案準備

2.1 資料庫

2.2 jar包

2.3 html頁面

3.專案建立

3.1 建立web專案

建立web專案 EduPro

3.2 匯入jar包

3.3 配置C3P0資料連線池

在src根目錄下，建立c3p0-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<c3p0-config>
	<default-config>
		<property name="driverClass">com.mysql.jdbc.Driver</property>
		<property name="jdbcUrl">jdbc:mysql://localhost:3306/education</property>
		<property name="user">root</property>
		<property name="password">root</property>
	</default-config> 
</c3p0-config> 
 

3.4 建立JavaBean

建立包cn.lctvu.bean包，建立News類

public class News {
    private int id;
    private String title;
    private String content;
    private String item;
    private Date tdate;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getItem() {
        return item;
    }

    public void setItem(String item) {
        this.item = item;
    }

    public Date getTdate() {
        return tdate;
    }

    public void setTdate(Date tdate) {
        this.tdate = tdate;
    }
}
 

3.5 建立工具類

建立包cn.lctvu.utils包，在包中建立資料庫連線工具類DataSourceUtils

package cn.itcast.itcaststore.utils;
import java.sql.Connection;
import java.sql.SQLException;
import javax.sql.DataSource;
import com.mchange.v2.c3p0.ComboPooledDataSource;
/**
 * 資料來源工具
 */
public class DataSourceUtils {
	private static DataSource dataSource = new ComboPooledDataSource();
	private static ThreadLocal<Connection> tl = new ThreadLocal<Connection>();

	public static DataSource getDataSource() {
		return dataSource;
	}
	/**
	 * 當DBUtils需要手動控制事務時，呼叫該方法獲得一個連線
	 * @return
	 * @throws SQLException
	 */
	public static Connection getConnection() throws SQLException {
		Connection con = tl.get();
		if (con == null) {
			con = dataSource.getConnection();
			tl.set(con);
		}
		return con;
	}
	/**
	 * 開啟事務
	 * @throws SQLException
	 */
	public static void startTransaction() throws SQLException {
		Connection con = getConnection();
		if (con != null)
			con.setAutoCommit(false);
	}
	/**
	 * 從ThreadLocal中釋放並且關閉Connection,並結束事務
	 * @throws SQLException
	 */
	public static void releaseAndCloseConnection() throws SQLException {
		Connection con = getConnection();
		if (con != null) {
			con.commit();
			tl.remove();
			con.close();
		}
	}
	/**
	 * 事務回滾
	 * @throws SQLException 
	 */
	public static void rollback() throws SQLException {
		Connection con = getConnection();
		if (con != null) {
			con.rollback();
		}
	}
}