在Tomcat中部署Spring，配置时需要注意的一些问题

 

今天上午从svn上checkout一个项目，里面用到了ZK和Spring框架，本来这个项目是部署在Jboss上的，现在我需要在Tomcat中部署它。下面把我部署时出现的问题及解决方法记录下来：

1.checkout之后，我首先改了Spring的配置文件：applicationContext.xml

将数据源的配置：

<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>java:hgbids</value>
</property>
</bean>

替换为：

<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:application.config.properties"/>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${db.driver}" />
<property name="url" value="${db.url}" />
<property name="username" value="${db.username}" />
<property name="password" value="${db.password}" />
</bean>

并在项目同目录下增加application.config.properties文件，内容为：

# db server config
db.driver=oracle.jdbc.driver.OracleDriver

db.url=jdbc:oracle:thin:@ip:1521:serverName
db.username=loginName

db.password=loginPassword

其中粗体代表需要替换你的实际参数的地方。

本以为这样就可以了，发布，启动Tomcat，报错：

NoClassDefFoundError: javax/transaction/Synchronization

......

Caused by:
java.lang.NoClassDefFoundError: javax/transaction/Synchronization
at java.lang.Class.getDeclaredConstructors0(Native Method)

这个是因为缺少jta.jar包的原因，到网上下了一个jta.jar包，放到lib目录下。

启动又报错：

IllegalStateException: Either 'userTransaction' or 'userTransactionName' or 'transactionManager' or 'transactionManagerName' must be specified

到网上查查看，关于这个错误有这样的说法：

You use JTA so re-introducte the jta.jar when running on Tomcat. As you correctly mentioned, JTA is provided by JBoss out-of-the-box (which is has to because it is a a full J2EE server), tomcat otoh doesn't provide that because it is merely a JSP/Servlet container. (This is the part you already fixed).
Tomcat also doesn't provide anything for distributed transaction, you will need to introduce something yourself, the are standalone JTA providers/manager available wich work perfectly well with Tomcat).

我到配置文件（applicationContext.xml）里看看，发现有这样的配置： <bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager"></bean>

把它换成：

<bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource">
<ref bean="dataSource"/>
</property>
</bean>

重新发布，启动，又报错：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'txAdvice': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in class path resource [META-INF/commonContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Either 'userTransaction' or 'userTransactionName' or 'transactionManager' or 'transactionManagerName' must be specified

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in class path resource [META-INF/commonContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Either 'userTransaction' or 'userTransactionName' or 'transactionManager' or 'transactionManagerName' must be specified

要解决这个问题，请按照下面的方法进行（转自：http://zkgale.javaeye.com/blog/210421）

java.lang.NoClassDefFoundError: org/objectweb/asm/CodeVisito
错误：java.lang.NoClassDefFoundError: org/objectweb/asm/CodeVisitor的解决方法
在使用Spring的AOP编程时，会用到这几个lib：
asm-2.2.2.jar
asm-commons-2.2.2.jar
asm-util-2.2.2.jar
Hibernate使用如下lib：
asm.jar
asm-attrs.jar
其中asm-2.2.2.jar与asm.jar存在类上的冲突！！！
使用其中之一或两者都使用，可能会出现如下错误：
java.lang.NoClassDefFoundError: org/objectweb/asm/CodeVisitor
java.lang.NoClassDefFoundError: org/objectweb/asm/commons/EmptyVisitor
java.lang.NoSuchMethodError: org.objectweb.asm.ClassVisitor.visit。。。。。。
解决办法是：
1.去掉类路径上的关于Hibernate的3个lib
asm.jar
asm-attrs.jar
cglib-2.1.3.jar
2.加入Spring中的以下4个lib
asm-2.2.2.jar
asm-commons-2.2.2.jar
asm-util-2.2.2.jar
cglib-nodep-2.1_3.jar

好了，到这里，问题就解决完了，发布、启动Tomcat，成功。