tomcat啟動的時候沒有錯誤，但是進行數據庫操作就會有錯誤。
在網上找了很久 好不容易找到解決方法
轉自 http://blog.csdn.net/ro_bot/article/details/51659502
出現以上錯誤原因是：數據源的錯誤配置：
錯誤的jdbc.properties
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/seckill username=root password=root
錯誤的spring.xml
<?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"> <context:property-placeholder location="jdbc.properties"/> <bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource" > <property name="driverClass" value="${driver}"/> <property name="url" value="${url}" /> <property name="username" value="${username}" /> <property name="password" value="${password}" /> </beans>
將配置修改為：
jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/seckill jdbc.username=root jdbc.password=root
spring-dao.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <context:property-placeholder location="jdbc.properties"/> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClass" value="${jdbc.driver}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </bean> </beans>
配置完后成功運行。