{"id":14107,"date":"2024-03-15T08:27:41","date_gmt":"2024-03-15T08:27:41","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-does-spring-boot-test-load-the-main-application-class\/"},"modified":"2025-08-06T03:57:09","modified_gmt":"2025-08-06T03:57:09","slug":"how-does-spring-boot-test-load-the-main-application-class","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-does-spring-boot-test-load-the-main-application-class\/","title":{"rendered":"Spring Boot Test: Load Main Class"},"content":{"rendered":"

When conducting unit tests using Spring Boot, it is necessary to load the main class in order to access the Spring Boot context environment and its corresponding configurations. There are various methods for loading the main class for testing, here are a few commonly used ones:<\/p>\n

    \n
  1. By using the @SpringBootTest annotation in a test class, the Spring Boot context environment will be automatically loaded by starting the class.<\/li>\n<\/ol>\n
    @SpringBootTest<\/span>\r\npublic<\/span> class<\/span> MyTest<\/span> {\r\n    \/\/ \u6d4b\u8bd5\u4ee3\u7801<\/span>\r\n}\r\n<\/code><\/pre>\n
      \n
    1. Specify the startup class using the @SpringBootTest annotation: If there are multiple startup classes, you can use the classes attribute to specify which one to load.<\/li>\n<\/ol>\n
      @SpringBootTest(classes = MyApplication.class)<\/span>\r\npublic<\/span> class<\/span> MyTest<\/span> {\r\n    \/\/ \u6d4b\u8bd5\u4ee3\u7801<\/span>\r\n}\r\n<\/code><\/pre>\n
        \n
      1. Using the @ContextConfiguration annotation: load the startup class with the @ContextConfiguration annotation and specify its location.<\/li>\n<\/ol>\n
        @RunWith(SpringRunner.class)<\/span>\r\n@ContextConfiguration(classes = MyApplication.class)<\/span>\r\npublic<\/span> class<\/span> MyTest<\/span> {\r\n    \/\/ \u6d4b\u8bd5\u4ee3\u7801<\/span>\r\n}\r\n<\/code><\/pre>\n
          \n
        1. The SpringApplicationConfiguration annotation can be used to load the main class in earlier versions of Spring Boot.<\/li>\n<\/ol>\n
          @RunWith(SpringJUnit4ClassRunner.class)<\/span>\r\n@SpringApplicationConfiguration(classes = MyApplication.class)<\/span>\r\npublic<\/span> class<\/span> MyTest<\/span> {\r\n    \/\/ \u6d4b\u8bd5\u4ee3\u7801<\/span>\r\n}\r\n<\/code><\/pre>\n
          All of these methods can be used to load the startup class for testing, simply choose the appropriate method based on the specific circumstances.<\/p>\n","protected":false},"excerpt":{"rendered":"
          When conducting unit tests using Spring Boot, it is necessary to load the main class in order to access the Spring Boot context environment and its corresponding configurations. There are various methods for loading the main class for testing, here are a few commonly used ones: By using the @SpringBootTest annotation in a test class, […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[18993,132,18992,18994,134],"class_list":["post-14107","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-springboottest","tag-java-testing","tag-spring-boot-testing","tag-spring-context","tag-unit-testing"],"yoast_head":"\nSpring Boot Test: Load Main Class - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn essential methods to load main application class in Spring Boot tests using @SpringBootTest for effective context access.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-does-spring-boot-test-load-the-main-application-class\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spring Boot Test: Load Main Class\" \/>\n<meta property=\"og:description\" content=\"Learn essential methods to load main application class in Spring Boot tests using @SpringBootTest for effective context access.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-does-spring-boot-test-load-the-main-application-class\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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