错误

Error creating bean with name 'transactionManager' defined in class path resource [spring-dao.xml]:
 Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Property 'dataSource' is required

原因：配合事物的时候，没有注入值

 

错误代码

 

 解决办法：给他把值注入

正确代码

 

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