spring+ibatis+jetty+mysql 启动时出现异常

spring+ibatis+jetty+mysql 启动时出现异常，不是每次都会有这个问题，启动失败的时候，是可以连网的，大神们知道这是什么问题吗。
启动失败时，用mysql是可以连接上的服务器。

2015-10-29 17:33:54.008:INFO:oejs.Server:jetty-8.1.9.v20130131
2015-10-29 17:33:54.102:INFO:oejpw.PlusConfiguration:No Transaction manager found - if your webapp requires one, please configure one.
2015-10-29 17:33:54.441:INFO:/:No Spring WebApplicationInitializer types detected on classpath
2015-10-29 17:33:54.572:INFO:/:Set web app root system property: 'aijiazu.root' = [D:\cxjy\cxjy\code\aijiazu-server\src\main\webapp]
2015-10-29 17:33:54.623:INFO:/:Initializing log4j from [classpath:log4j.properties]
2015-10-29 17:33:54.632:INFO:/:Initializing Spring root WebApplicationContext
2015-10-29 17:35:07,342 [main] ERROR org.springframework.web.context.ContextLoader: 319 - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlMapClient' defined in class path resource [conf/spring-db.xml]: Invocation of init method failed; nested exception is com.ibatis.common.exception.NestedRuntimeException: Error occurred. Cause: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.net.ConnectException: Connection timed out: connect
Caused by: java.net.ConnectException: Connection timed out: connect
Caused by: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.net.ConnectException: Connection timed out: connect
Caused by: java.net.ConnectException: Connection timed out: connect
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1482)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:610)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:775)
at org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:424)
at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:767)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:249)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:710)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:492)
at org.mortbay.jetty.plugin.JettyWebAppContext.doStart(JettyWebAppContext.java:293)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:229)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:172)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:229)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.Server.doStart(Server.java:280)
at org.mortbay.jetty.plugin.JettyServer.doStart(JettyServer.java:65)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:520)
at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:365)
at org.mortbay.jetty.plugin.JettyRunMojo.execute(JettyRunMojo.java:523)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:534)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: com.ibatis.common.exception.NestedRuntimeException: Error occurred. Cause: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.net.ConnectException: Connection timed out: connect
Caused by: java.net.ConnectException: Connection timed out: connect
Caused by: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.net.ConnectException: Connection timed out: connect
Caused by: java.net.ConnectException: Connection timed out: connect
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser.parse(SqlMapConfigParser.java:81)
at com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(SqlMapClientBuilder.java:62)
at org.springframework.orm.ibatis.SqlMapClientFactoryBean.buildSqlMapClient(SqlMapClientFactoryBean.java:329)
at org.springframework.orm.ibatis.SqlMapClientFactoryBean.afterPropertiesSet(SqlMapClientFactoryBean.java:280)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1541)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1479)
... 54 more
Caused by: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: java.net.ConnectException: Connection timed out: connect
Caused by: java.net.ConnectException: Connection timed out: connect
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:53)
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser.parse(SqlMapConfigParser.java:78)
... 59 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:378)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:473)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:598)

sqlmapclient的配置文件有问题，首先，你可能没有配置事务管理，如果你项目中用到了事务，则需要配置一个。
其次，你的数据库配置文件有问题，导致无法创建SqlMapClient类的实例。

检查数据库配置是否正确，另外检查是否正常连接到数据库，连接超时了。

听说随便回答就有分？楼上说得对

数据库是可以连接成功的，这是我的配置文件，配置有问题吗？

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

<!-- DataSource定义 -->
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
    <property name="driverClassName">
        <value>${jdbc_driverClassName}</value>
    </property>
    <property name="url">
        <value>${jdbc_url}</value>
    </property>
    <property name="username">
        <value>${jdbc_username}</value>
    </property>
    <property name="password">
        <value>${jdbc_password}</value>
    </property>
    <!-- 连接属性 -->
    <property name="connectionProperties">
        <value>clientEncoding=UTF-8</value>
    </property>
    <!-- 初始化连接大小 -->
    <property name="initialSize">
        <value>5</value>
    </property>
    <!-- 连接池最大使用连接数 -->
    <property name="maxTotal">
        <value>50</value>
    </property>
    <property name="maxWaitMillis">
        <value>500</value>
    </property>
    <property name="maxIdle">
        <value>5</value>
    </property>
</bean>

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

<bean id="transactionTemplate"
    class="org.springframework.transaction.support.TransactionTemplate">
    <property name="transactionManager" ref="transactionManager" />
</bean>

<!-- iBatis SQL map定义 -->
<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="configLocation" value="classpath:conf/sqlmap-config.xml"/>
</bean>

<!-- JdbcTemplate正是为了减少繁琐的代码而设计出来的。它是对 JDBC 的一种封装 -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <property name="dataSource">
        <ref local="dataSource" />
    </property>
</bean>