Tomcatc3p0配置jnid數(shù)據(jù)源2種實(shí)現(xiàn)方法解析
發(fā)布日期：2022-01-14 08:48 | 文章來源：站長(zhǎng)之家
使用c3p0
導(dǎo)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文件加入數(shù)據(jù)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" />
獲取連接
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
//創(chuàng)建上下文
Context context=new InitialContext();
//獲取數(shù)據(jù)源
ComboPooledDataSource comboPooledDataSource= (ComboPooledDataSource) context.lookup
("java:comp/env/jdbc/myDB");
//獲取數(shù)據(jù)庫(kù)連接
Connection connection=comboPooledDataSource.getConnection();
if(!connection.isClosed()){
System.out.println("已經(jīng)連接成功");
}
} catch (NamingException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
使用druid
導(dǎo)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文件加入數(shù)據(jù)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"/>
獲取連接
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
//獲取上下文對(duì)象
Context context=new InitialContext();
//獲取數(shù)據(jù)源
DataSource ds= (DataSource) context.lookup("java:comp/env/jdbc/MysqlDataSource");
//獲取Connection對(duì)象
Connection connection=ds.getConnection();
if(!connection.isClosed()){
System.out.println("連接成功");
}
} catch (NamingException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
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