问SpringBoot的pom.xml使用exclusions标签禁用无效？

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>

   <groupId>com.hxm</groupId>
   <artifactId>jiwuyou</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <packaging>jar</packaging>

   <name>shop</name>
   <description>Demo project for Spring Boot</description>

   <!--工程继承spring-boot-starter-parent-->
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>1.4.7.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>

   <properties>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <java.version>1.8</java.version>
      <tomcat.version>8.5.32</tomcat.version>
   </properties>

   <dependencies>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
         <!-- 排除内置容器，排除内置容器导出成war包可以让外部容器运行spring-boot项目-->
         <!--<exclusions>-->
            <!--<exclusion>-->
               <!--<groupId>org.springframework.boot</groupId>-->
               <!--<artifactId>spring-boot-starter-tomcat</artifactId>-->
            <!--</exclusion>-->
         <!--</exclusions>-->
         <exclusions>
            <exclusion>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
         </exclusions>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-log4j</artifactId>
         <version>1.3.8.RELEASE</version>
      </dependency>

      <dependency>
         <groupId>com.alipay</groupId>
         <artifactId>sdk-java</artifactId>
         <version>20170307171631</version>
      </dependency>

      <dependency>
         <groupId>cn.springboot</groupId>
         <artifactId>best-pay-sdk</artifactId>
         <version>1.2.0</version>
      </dependency>

      <dependency>
         <groupId>com.github.wxpay</groupId>
         <artifactId>wxpay-sdk</artifactId>
         <version>0.0.3</version>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-configuration-processor</artifactId>
         <optional>true</optional>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>

      <!-- java日志依赖 -->
      <dependency>
         <groupId>commons-logging</groupId>
         <artifactId>commons-logging</artifactId>
         <version>1.1.3</version>
      </dependency>

      <!-- hateoas插件 -->
      <dependency>
         <groupId>org.springframework.hateoas</groupId>
         <artifactId>spring-hateoas</artifactId>
         <version>0.16.0.RELEASE</version>
      </dependency>

      <!-- 官方模板接口 -->
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-thymeleaf</artifactId>
      </dependency>

      <!-- 加载SpringBoot JPA 数据操作接口 -->
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-data-jpa</artifactId>
      </dependency>

      <!-- 加载MySQL驱动 -->
      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
      </dependency>

      <!-- 加载SpringBoot AOP 编程方式接口 -->
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-aop</artifactId>
      </dependency>

      <!-- 添加devtools依赖包. 热部署 -->
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-devtools</artifactId>
         <!-- optional=true,依赖不会传递，该项目依赖devtools；之后依赖myboot项目的项目如果想要使用devtools，需要重新引入 -->
         <optional>true</optional>
         <scope>true</scope>
      </dependency>

      <!-- 添加fastjson依赖包. -->
      <dependency>
         <groupId>com.alibaba</groupId>
         <artifactId>fastjson</artifactId>
         <version>1.2.15</version>
      </dependency>

   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
               <fork>true</fork><!-- 如果没有该项配置，devtools不会起作用，即应用不会restart -->
               <!-- 自定义引入项目本地JAR包，必须开启 -->
               <includeSystemScope>true</includeSystemScope>
            </configuration>
         </plugin>
      </plugins>
   </build>


</project>