tomcat6数据源配置及数据源使用

1.全局数据源：服务器上所有应用都可以使用

${TOMCAT_HOME}/conf/context.xml 文件中增加

<Resource name="jdbc/logDataSource"
auth="Container"
type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/localhost?autoReconnect=true"
username="xxx"
password="xxx"
maxActive="100"
maxIdle="30"
maxWait="10000" />

在web项目web.xml文件中配置如下：

<resource-ref>
<res-ref-name>jdbc/logDataSource</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>

context.xml文件中

<WatchedResource>WEB-INF/web.xml</WatchedResource>

是干嘛用的呢？tomcat服务器会顶起扫描这个文件，查找WEB/INF/web.xml文件中引用上述jdbc/logDataSource数据源的应用，这样就可以动态配置数据源

2.指定虚拟主机上数据源:

${TOMCAT_HOME}/conf/Catalina/${hostname}/context.xml.default 按照上述配置

3.指定应用下数据源：

${TOMCAT_HOME}/conf/Catalina/${hostname}/${appName}.xml 按照上述配置

4.新建一个spring-config-ds-jndi.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 
<bean id="logDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="java:comp/env/jdbc/logDataSource">

</property>
<property name="expectedType" value="javax.sql.DataSource"></property>
</bean>

</beans>

jdbc/logDataSource就是web.xml中res-ref-name

5.新建一个spring-config-dao.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd" default-autowire="byName">

<bean id="logSqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
<property name="configLocation" value="classpath:sqlmap-config-log.xml"/>
</bean>

<bean id="userActionLogDao" class="actions.dispatcher.testSql.UserActionLog" >
<property name="sqlMapClient" ref="logSqlMapClient"/>
<property name="dataSource" ref="logDataSource"/>
</bean>

</beans>

logDataSource就是spring-config-ds-jndi.xml中的jndi数据源bean id

6.新建sql-map-config-log.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMapConfig  PUBLIC "-//iBATIS.com//DTD SQL Map
Config 2.0/" "http://www.ibatis.com/dtd/sql-map-config-2.dtd">

<sqlMapConfig>

<settings cacheModelsEnabled="true" enhancementEnabled="true"
lazyLoadingEnabled="false" errorTracingEnabled="true" maxRequests="32"
maxSessions="10" maxTransactions="5" useStatementNamespaces="true" />

<sqlMap resource="sqlmap/UserActionLog.xml"/>

</sqlMapConfig>

7.新建Dao层类UserActionLog

public class UserActionLog extends  org.springframework.orm.ibatis.SqlMapClientTemplate{
public void testSql(Student student){
this.insert("UserActionLog.testSql",student);
}
}

8.新建UserActionLog.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN"
"http://www.ibatis.com/dtd/sql-map-2.dtd">

<sqlMap namespace="UserActionLog">

<insert id="testSql" parameterClass="actions.dispatcher.exec.Student">
insert into userActionLog(age,name) values(#age#,#name#)
</insert>
</sqlMap>

9.新建service类，通过调用

package actions.dispatcher.exec;

import actions.dispatcher.testSql.UserActionLog;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class TestSqlExecute {
private UserActionLog userActionLogDao ;
private Log log = LogFactory.getLog(TestSqlExecute.class);
@Override
public void execute() {
Student student = new Student();
student.setAge(111);
student.setName("liujin");
try {
userActionLogDao.testSql( student);
} catch (Exception e) {
log.error("TestSqlExecute",e);

}

}

public void setUserActionLogDao(UserActionLog userActionLogDao) {
this.userActionLogDao = userActionLogDao;
}
}

userActionLogDao 这个bean是在 spring-config-dao.xml中配置好的

10.通过以上配置就可以使用数据源了，记住mysql-connector-java-5.0.8.jar需要放到${TOMCAT_HOME}/lib中

依赖jar包如下

<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>system</scope>
<systemPath>C:\Users\userName\.m2\repository\javax\servlet\servlet-api\servlet-api.jar</systemPath>
</dependency>

<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>

<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.14</version>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>2.3.5</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.1.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.0.8</version>
<scope>runtime</scope>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>
</dependencies>

可以在pom文件中配置

11.log4j配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="[%7r] %6p - %30.30c - %m \n"/>
</layout>
</appender>
<appender name="LOG-MAIN" class="org.apache.log4j.DailyRollingFileAppender">
<param name="DatePattern" value="'.'yyyy-MM-dd"/>
<!--<param name="file" value="${app.server.log.path}/main.log"/>-->
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%7r] %6p - %30.30c - %m \n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="INFO"/>
<!--<param name="LevelMax" value="FATAL "/>-->
</filter>
</appender>
<root>
<priority value="INFO"/>
<appender-ref ref="CONSOLE"/>
</root>
</log4j:configuration>