java.lang.NoClassDefFoundError: org/springframework/dao/support/DaoSupport

错误描述：练习springboot整合mybatis时添加mybatis 与 mysql的依赖后，启动服务报错。

报错信息：

java.lang.NoClassDefFoundError: org/springframework/dao/support/DaoSupport
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at java.lang.ClassLoader.defineClass1(Native Method)	

解决办法：在网上查到说是缺少了spring.tx的jar包
添加如下jar包

       <dependency>
		    <groupId>org.springframework</groupId>
		    <artifactId>spring-tx</artifactId>
		    <version>3.0.5.RELEASE</version>
		</dependency>

又出现错误：Caused by: java.lang.IllegalStateException: No persistence exception translators found in bean factory. Cannot perform exception translation.

出错原因：jar包版本不对

解决办法：

   <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>4.3.18.RELEASE</version>
   </dependency>

问题解决！