Hướng dẫn thiết kế phần mềm Dependency Injection (DI) trong Java

{"success":true,"head":"<title>Thiết kế phần mềm Dependency Injection (DI) trong Java</title>\n<meta name=\"description\" content=\"Dependency Injection không chỉ là một kỹ thuật thiết kế phần mềm, mà còn là tư duy giúp tách biệt các mối quan hệ phức tạp trong hệ thống.\"/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-video-preview:-1, max-image-preview:large\"/>\n<link rel=\"canonical\" href=\"https://blog.cystack.org/tutorial/2025/04/17/thiet-ke-phan-mem-d/\" />\n<meta property=\"og:locale\" content=\"en_US\" />\n<meta property=\"og:type\" content=\"article\" />\n<meta property=\"og:title\" content=\"Thiết kế phần mềm Dependency Injection (DI) trong Java\" />\n<meta property=\"og:description\" content=\"Dependency Injection không chỉ là một kỹ thuật thiết kế phần mềm, mà còn là tư duy giúp tách biệt các mối quan hệ phức tạp trong hệ thống.\" />\n<meta property=\"og:url\" content=\"https://blog.cystack.org/tutorial/2025/04/17/thiet-ke-phan-mem-d/\" />\n<meta 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/>\n<meta name=\"twitter:title\" content=\"Thiết kế phần mềm Dependency Injection (DI) trong Java\" />\n<meta name=\"twitter:description\" content=\"Dependency Injection không chỉ là một kỹ thuật thiết kế phần mềm, mà còn là tư duy giúp tách biệt các mối quan hệ phức tạp trong hệ thống.\" />\n<meta name=\"twitter:image\" content=\"https://s2.cystack.net/tutorial/05100725/Dependency-Injection-trong-Java-1024x538.jpg\" />\n<meta name=\"twitter:label1\" content=\"Written by\" />\n<meta name=\"twitter:data1\" content=\"Bao Tran\" />\n<meta name=\"twitter:label2\" content=\"Time to read\" />\n<meta name=\"twitter:data2\" content=\"11 minutes\" />\n<script type=\"application/ld+json\" class=\"rank-math-schema\">{\"@context\":\"https://schema.org\",\"@graph\":[{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https://blog.cystack.org/tutorial/#person\",\"name\":\"CyStack 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