xercesImpl.jar和xml-apis.jar (系统找不到指定的文件)

springboot内置的tomcat为8.5.23，我们需要指定springboot的内置tomcat版本
修改pom.xml文件，增加<tomcat.version>7.0.90</tomcat.version>
  <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>7.0.90</tomcat.version>
  </properties>
 <!-- 添加tomcat依赖jar包 -->
   <dependency> 
       <groupId>org.apache.tomcat</groupId> 
       <artifactId>tomcat-juli</artifactId> 
       <version>${tomcat.version}</version> 
   </dependency>