为什么applicationContext.xml属性加载两次外部Tomcat作为Spring Web项目？

Question

我有一个正在运行的Spring Web项目（A）与外部Tomcat，现在，我想转移到Spring云，需要支持（A），当我作为Spring引导Web项目与外部Tomcat运行时， applicationContext.xml加载两次。

代码如下：

package com.pa.openapi.gateway.core;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.data.jpa.JpaRepositoriesAutoConfiguration;
import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

@EnableWebMvc
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class,
    HibernateJpaAutoConfiguration.class, JpaRepositoriesAutoConfiguration.class })
@EnableDiscoveryClient
public class Application extends SpringBootServletInitializer {

    public static void main(String[] args) {
        System.out.println("*********************Application***************************************");
        SpringApplication.run(Application.class, args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(this.getClass());
    }
}


package com.pa.openapi.gateway.core;

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;

@Configuration
@ImportResource("classpath*:applicationContext.xml")
public class ConfigurationClass { }

Tomcat as apache-tomcat-8.0.24

如果您有任何疑问，请告诉我。