Tomcatc3p0配置jnid数据源2种实现方法解析
作者：Y_wee
这篇文章主要介绍了Tomcatc3p0配置jnid数据源2种实现方法解析,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
使用c3p0
导入c3p0jar包
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 --> <dependency> <groupId>com.mchange</groupId> <artifactId>c3p0</artifactId> <version>0.9.5.2</version> </dependency>
在tomcat的context.xml文件加入数据源配置
<Resource
auth="Container"
description="DB Connection"
driverClass="com.mysql.jdbc.Driver"
maxPoolSize="100" minPoolSize="2"
acquireIncrement="2"
name="jdbc/myDB"
user="root"
password="123456"
factory="org.apache.naming.factory.BeanFactory"
type="com.mchange.v2.c3p0.ComboPooledDataSource"
jdbcUrl="jdbc:mysql://localhost:3306/attendance_system?characterEncoding=utf8&serverTimezone=GMT%2B8" />
获取连接
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
//创建上下文
Context context=new InitialContext();
//获取数据源
ComboPooledDataSource comboPooledDataSource= (ComboPooledDataSource) context.lookup
("java:comp/env/jdbc/myDB");
//获取数据库连接
Connection connection=comboPooledDataSource.getConnection();
if(!connection.isClosed()){
System.out.println("已经连接成功");
}
} catch (NamingException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
使用druid
导入jar包
<!-- https://mvnrepository.com/artifact/com.alibaba/druid --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.16</version> </dependency>
在tomcat的context.xml文件加入数据源配置
<Resource name="jdbc/MysqlDataSource" factory="com.alibaba.druid.pool.DruidDataSourceFactory" auth="Container" type="javax.sql.DataSource" driverClassName="com.mysql.cj.jdbc.Driver" url="jdbc:mysql://localhost:3306/yl?characterEncoding=utf8&serverTimezone=GMT%2B8" username="root" password="123456" maxActive="50" maxWait="10000" removeabandoned="true" removeabandonedtimeout="60" logabandoned="false" filters="stat"/>
获取连接
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
//获取上下文对象
Context context=new InitialContext();
//获取数据源
DataSource ds= (DataSource) context.lookup("java:comp/env/jdbc/MysqlDataSource");
//获取Connection对象
Connection connection=ds.getConnection();
if(!connection.isClosed()){
System.out.println("连接成功");
}
} catch (NamingException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。