复杂更新Sql语句(Complex Update Sql Statement)

 我找到了一个解决方案，但我不确定为什么这会产生问题。 如果您知道为什么会这样，请发布您的答案。 
 
 问题是@EnableWebMvc注释 
 
@Configuration
// @EnableWebMvc
@Import(MyServiceConfiguration.class)
    public class MyRestServiceConfiguration {

}
 
 删除后，一切正常。 
 
 从Spring Boot指南： 
 
 通常你会为Spring MVC应用程序添加@EnableWebMvc，但Spring Boot会在类路径上看到spring-webmvc时自动添加它。 这会将应用程序标记为Web应用程序并激活关键行为，例如设置DispatcherServlet。 
 
 很明显， @EnableWebMvc注释，但为什么会出现问题呢？ 
 
 编辑： 
 
 从Spring Boot参考： 
 
 完全控制MVC配置的最简单方法是使用@EnableWebMvc注释提供您自己的@Configuration。 这将使所有MVC配置保留在您的手中。 
 
 来自Spring的@EnableWebMvc文档： 
 
 将此批注添加到@Configuration类可从WebMvcConfigurationSupport导入Spring MVC配置，例如： 
 
 @Configuration
 @EnableWebMvc
 @ComponentScan(basePackageClasses = { MyConfiguration.class })
 public class MyWebConfiguration {

 }
 
 所以，问题是@EnableWebMvc注释无法解决Spring Boot的默认配置，因为Spring不知道在哪里寻找静态资源。 如果我出错了，请纠正我。 

I have found a solution, but I am not really sure why this makes problem. Please post your answer if you know why is this happening.
 
The problem was @EnableWebMvc annotation in MyRestServiceConfiguration 
 
@Configuration
// @EnableWebMvc
@Import(MyServiceConfiguration.class)
    public class MyRestServiceConfiguration {

}
 
After removing it, everything works as it should.
 
From Spring Boot guide:
 
Normally you would add @EnableWebMvc for a Spring MVC app, but Spring Boot adds it automatically when it sees spring-webmvc on the classpath. This flags the application as a web application and activates key behaviors such as setting up a DispatcherServlet.
 
It's clear that @EnableWebMvc annotation is not needed, but why does it make problems?
 
EDIT:
 
From Spring Boot reference:
 
The easiest way to take complete control over MVC configuration is to provide your own @Configuration with the @EnableWebMvc annotation. This will leave all MVC configuration in your hands.
 
From Spring's @EnableWebMvc documentation:
 
Adding this annotation to an @Configuration class imports the Spring MVC configuration from WebMvcConfigurationSupport, e.g.:
 
 @Configuration
 @EnableWebMvc
 @ComponentScan(basePackageClasses = { MyConfiguration.class })
 public class MyWebConfiguration {

 }
 
So, the problem was that @EnableWebMvc annotation dissabled default Spring Boot's configuration and because of that Spring didn't know where to look for static resources. If I got something wrong, please correct me.