转载自   tomcat7.0.42如何设置mysql数据库连接池

如何在tomcat7.0.42中设置mysql数据库连接池????eclipse如何绑定tomcat??按网上教程总不成功!怎么办

server.xml

<Resource name="jdbc/test" auth="Container" type="javax.sql.DataSource" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" testWhileIdle="true" testOnBorrow="true" testOnReturn="false" validationInterval="30000" timeBetweenEvictionRunsMillis="30000" maxActive="100" minIdle="10" maxWait="10000" initialSize="10" removeAbandonedTimeout="60" removeAbandoned="true" logAbandoned="false" minEvictableIdleTimeMillis="30000" jmxEnabled="true" jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"  username="root" password="123" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/test"/><Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true">
<Context docBase="blog3" path="/blog3" reloadable="true" source="org.eclipse.jst.jee.server:blog3"/>
</Host>

context.xml

<ResourceLink global="jdbc/test" name="jdbc/test" type="javax.sql.DataSource" />

Java代码：

public class DBconn {private static String datasoucename = "java:comp/env/jdbc/test";Context context = null;DataSource ds = null;Connection conn = null;public Connection getconn() {return initConnection();}public DataSource getDataSource() {try {context = new InitialContext();} catch (NamingException e) {System.err.println("连接池上下文不存在! " + e.getMessage());}try {ds = (DataSource) context.lookup(datasoucename);} catch (NamingException e) {System.err.println("数据源没发现! " + e.getMessage());}return ds;}private Connection initConnection() {try {context = new InitialContext();} catch (NamingException e) {System.err.println("连接池上下文不存在! " + e.getMessage());}try {ds = (DataSource) context.lookup(datasoucename);} catch (NamingException e) {System.err.println("数据源没发现! " + e.getMessage());}try {conn = ds.getConnection();} catch (SQLException e) {System.err.println("获取连接失败! " + e.getMessage());}return conn;}public void freeConnection() {try {conn.close();} catch (Exception e) {System.err.println("释放连接出错! ");e.printStackTrace();}}}