@SpringBootConfiguration重复加载报错问题解决

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
public class PortalApplication {
    public static void main(String[] args) {
        SpringApplication.run(PortalApplication.class, args);
    }
}

// 主配置类
@SpringBootApplication
public class PortalApplication {
    public static void main(String[] args) {
        SpringApplication.run(PortalApplication.class, args);
    }
}
// 测试配置类
@SpringBootApplication
public class TestApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }
}

import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.junit.runner.RunWith;
import org.junit.Test;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = TestApplication.class)
public class PortalApplicationTest {
    @Test
    public void contextLoads() {
        // 测试内容
    }
}

import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.context.annotation.Bean;
@TestConfiguration
public class TestConfig {
    @Bean
    public SomeBean someBean() {
        return new SomeBean();
    }
}

import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.context.annotation.Import;
import org.junit.runner.RunWith;
import org.junit.Test;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = PortalApplication.class)
@Import(TestConfig.class)
public class PortalApplicationTest {
    @Test
    public void contextLoads() {
        // 测试内容
    }
}