半壁江山009的博客

org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is...

// 告诉spring mvc这是一个控制器类 @Controller @RequestMapping("") public class CategoryController { @Autowired CategoryService categoryService; @RequestMapping("listCategory") public ModelAndVi...