使用maven管理依赖，spring版本冲突解决 java.lang.NoSuchMethodError: org.springframework.core.GenericTypeResolver.r

报错异常堆栈：

java.lang.NoSuchMethodError: org.springframework.core.GenericTypeResolver.resolveTypeArguments(Ljava/lang/Class;Ljava/lang/Class;)[Ljava/lang/Class;at org.springframework.core.convert.support.GenericConversionService.getRequiredTypeInfo(GenericConversionService.java:275)at org.springframework.core.convert.support.GenericConversionService.addConverter(GenericConversionService.java:93)at org.springframework.core.convert.support.DefaultConversionService.addScalarConverters(DefaultConversionService.java:61)at org.springframework.core.convert.support.DefaultConversionService.addDefaultConverters(DefaultConversionService.java:53)at org.springframework.core.convert.support.DefaultConversionService.<init>(DefaultConversionService.java:42)at org.springframework.core.env.AbstractPropertyResolver.<init>(AbstractPropertyResolver.java:44)at org.springframework.core.env.PropertySourcesPropertyResolver.<init>(PropertySourcesPropertyResolver.java:42)at org.springframework.core.env.AbstractEnvironment.<init>(AbstractEnvironment.java:101)at org.springframework.core.env.StandardEnvironment.<init>(StandardEnvironment.java:54)at org.springframework.web.context.support.StandardServletEnvironment.<init>(StandardServletEnvironment.java:43)at org.springframework.web.servlet.HttpServletBean.<init>(HttpServletBean.java:90)at org.springframework.web.servlet.FrameworkServlet.<init>(FrameworkServlet.java:211)at org.springframework.web.servlet.DispatcherServlet.<init>(DispatcherServlet.java:323)at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)at java.lang.reflect.Constructor.newInstance(Constructor.java:513)at java.lang.Class.newInstance0(Class.java:357)at java.lang.Class.newInstance(Class.java:310)at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:140)at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1148)at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5210)at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5493)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)at java.util.concurrent.FutureTask.run(FutureTask.java:138)at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)at java.lang.Thread.run(Thread.java:695)

原因是maven的dependency中，依赖了不同版本的spring，spring2.5和3.1的冲突导致的。

解决办法是将使用了srping2.5的dependency加上exclusion，例如：

    <dependency>   <groupId>com.alibaba.cobar</groupId>    <artifactId>cobar-client</artifactId>    <version>1.0.5</version>        <exclusions>    <exclusion>       <groupId>org.springframework</groupId>       <artifactId>spring</artifactId>    </exclusion> </exclusions>    </dependency>