JavaWeb项目配置Hibernate

2018-05-28

2.将lib目录下的所有jar包拷贝到WEB-INF的lib目录下

3.新建一个测试实体

/**
 * 
 */
package com.example.entity.Test;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
/**
 * @author pantao
 *
 */
@Entity
@Table(name = "test")
public class Test {
	/**
	 * 
	 */
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	@Column(name = "id")
	private int id;
	@Column(name = "create_time")
	private Date ceateTime = new Date();
	public Test() {
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	
	public Date getCeateTime() {
		return ceateTime;
	}
	public void setCeateTime(Date ceateTime) {
		this.ceateTime = ceateTime;
	}
}

4.在src文件夹下新建hibernate.cfg.xml，并添加如下代码

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM 
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
	<session-factory>
		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1/databasename</property>
		<property name="hibernate.connection.username">username</property>
		<property name="hibernate.connection.password">password</property>
		<property name="current_session_context_class">thread</property>
		<property name="hibernate.show_sql">true</property>
		<property name="hibernate.hbm2ddl.auto">update</property>
		<property name="c3p0.max_size">100</property>
		<property name="c3p0.min_size">10</property>
		<property name="c3p0.timeout">5000</property>
		<property name="c3p0.max_statements">100</property>
		<property name="c3p0.idle_test_period">3000</property>
		<property name="c3p0.acquire_increment">10</property>
		<property name="c3p0.validate">false</property>
	    <!-- 映射实体 -->
		<mapping class="com.example.entity.Test" />
	</session-factory>
</hibernate-configuration>

注意修改连数据库的url（ip地址和域名均可）和数据库名，以及用户名和密码