1.springboot中有ApplicationRunner类，如果项目中的启动类名称也是ApplicationRunner，单元测试时需要注意：import不要import到springboot的类了
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = ApplicationRunner.class)
import org.springframework.boot.ApplicationRunner;
2.Could not open windows registry node SoftwareJavaSoftPrefs at root 0x80000002
=>regedit:HKEY_LOCAL_MACHINE->SOFTWARE->JavaSoft->Prefs
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration.errorPath;
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Cannot access specified node path [error.path:];
Caused by: java.util.prefs.BackingStoreException: Could not open windowsregistry node SoftwareJavaSoftPrefs at root 0x80000002.
参考：https://blog.csdn.net/u011393781/article/details/79930334