{"id":774,"date":"2023-11-26T23:31:45","date_gmt":"2023-04-02T19:41:37","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/spring%e3%81%aevalue%e3%82%a2%e3%83%8e%e3%83%86%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3%e3%82%92%e6%97%a5%e6%9c%ac%e8%aa%9e%e3%81%a7%e8%a8%80%e3%81%84%e6%8f%9b%e3%81%88%e3%82%8b%e3%80%82\/"},"modified":"2025-08-01T02:21:48","modified_gmt":"2025-07-31T17:21:48","slug":"spring%e3%81%aevalue%e3%82%a2%e3%83%8e%e3%83%86%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3%e3%82%92%e6%97%a5%e6%9c%ac%e8%aa%9e%e3%81%a7%e8%a8%80%e3%81%84%e6%8f%9b%e3%81%88%e3%82%8b%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/spring%e3%81%aevalue%e3%82%a2%e3%83%8e%e3%83%86%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3%e3%82%92%e6%97%a5%e6%9c%ac%e8%aa%9e%e3%81%a7%e8%a8%80%e3%81%84%e6%8f%9b%e3%81%88%e3%82%8b%e3%80%82\/","title":{"rendered":"Spring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3002"},"content":{"rendered":"

Spring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u5909\u6570\u3084\u30e1\u30bd\u30c3\u30c9\u5f15\u6570\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001Spring\u306e\u74b0\u5883\u5909\u6570\u3084\u30b7\u30b9\u30c6\u30e0\u5909\u6570\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001Spring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306fSpEL\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u4f7f\u7528\u4f8b\u3092\u3044\u304f\u3064\u304b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n

Spring\u306e @Value – \u30c7\u30d5\u30a9\u30eb\u30c8\u5024<\/h2>\n

\u300c@Value\u300d\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30b9\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

@Value(\"Default DBConfiguration\")\r\nprivate String defaultName;\r\n<\/code><\/pre>\n
@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u5f15\u6570\u306f\u6587\u5b57\u5217\u306e\u307f\u3067\u3059\u304c\u3001Spring\u306f\u6307\u5b9a\u3055\u308c\u305f\u578b\u306b\u5909\u63db\u3057\u3088\u3046\u3068\u8a66\u307f\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306f\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u3001\u5909\u6570\u306b\u30d6\u30fc\u30eb\u5024\u3068\u6574\u6570\u5024\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002<\/p>\n
@Value(\"true\")\r\nprivate boolean defaultBoolean;\r\n\r\n@Value(\"10\")\r\nprivate int defaultInt;\r\n<\/code><\/pre>\n
Spring\u306e@Value – Spring\u74b0\u5883\u30d7\u30ed\u30d1\u30c6\u30a3<\/h2>\n
@Value(\"${APP_NAME_NOT_FOUND}\")\r\nprivate String defaultAppName;\r\n<\/code><\/pre>\n
\u3082\u3057\u3001\u6625\u306e\u74b0\u5883\u30d7\u30ed\u30d1\u30c6\u30a3\u5185\u3067\u30ad\u30fc\u304c\u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u5834\u5408\u3001\u305d\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u5024\u306f${APP_NAME_NOT_FOUND}\u3068\u306a\u308a\u307e\u3059\u3002\u6625\u306e\u74b0\u5883\u30d7\u30ed\u30d1\u30c6\u30a3\u304b\u3089\u30ad\u30fc\u304c\u6b20\u843d\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
@Value(\"${APP_NAME_NOT_FOUND:Default}\")\r\nprivate String defaultAppName;\r\n<\/code><\/pre>\n
Spring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3 – \u30b7\u30b9\u30c6\u30e0\u74b0\u5883<\/h2>\n
Spring\u306e\u74b0\u5883\u304c\u6e96\u5099\u3055\u308c\u305f\u3068\u304d\u3001\u3059\u3079\u3066\u306e\u30b7\u30b9\u30c6\u30e0\u74b0\u5883\u5909\u6570\u3092\u8aad\u307f\u8fbc\u307f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u3057\u3066\u4fdd\u5b58\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001@Value\u6ce8\u91c8\u3092\u4f7f\u7528\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u5909\u6570\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
@Value(\"${java.home}\")\r\nprivate String javaHome;\r\n\t\r\n@Value(\"${HOME}\")\r\nprivate String homeDir;\r\n<\/code><\/pre>\n
\u30b9\u30d7\u30ea\u30f3\u30b0\u306e@Value – SpEL<\/h2>\n
\u79c1\u305f\u3061\u306f@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u4e00\u7dd2\u306bSpring Expression Language\u3092\u4f7f\u3046\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001SpEL\u3092\u4f7f\u3063\u3066Java\u30db\u30fc\u30e0\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8aad\u3080\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
@Value(\"#{systemProperties['java.home']}\")\r\nprivate String javaHome;\r\n<\/code><\/pre>\n
Spring\u306e@Value\u3092\u4f7f\u3063\u305f\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u306e\u30d1\u30e9\u30d5\u30ec\u30fc\u30ba\u306f\u6b21\u306e\u901a\u308a\u3067\u3059:
\nSpring\u306e\u30e1\u30bd\u30c3\u30c9\u306b@Value\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/h2>\n
\u30e1\u30bd\u30c3\u30c9\u306b@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u898b\u3064\u304b\u308b\u3068\u3001Spring\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306f\u3001\u3059\u3079\u3066\u306eSpring\u306e\u8a2d\u5b9a\u3068\u30d3\u30fc\u30f3\u304c\u30ed\u30fc\u30c9\u3055\u308c\u308b\u969b\u306b\u305d\u308c\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002\u30e1\u30bd\u30c3\u30c9\u306b\u8907\u6570\u306e\u5f15\u6570\u304c\u3042\u308b\u5834\u5408\u3001\u3059\u3079\u3066\u306e\u5f15\u6570\u306e\u5024\u306f\u30e1\u30bd\u30c3\u30c9\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304b\u3089\u30de\u30c3\u30d4\u30f3\u30b0\u3055\u308c\u307e\u3059\u3002\u7570\u306a\u308b\u5f15\u6570\u306b\u7570\u306a\u308b\u5024\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u5f15\u6570\u3068\u76f4\u63a5@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n
@Value(\"Test\")\r\npublic void printValues(String s, String v){} \/\/both 's' and 'v' values will be 'Test' \r\n<\/code><\/pre>\n
@Value(\"Test\")\r\npublic void printValues(String s, @Value(\"Data\") String v){}\r\n\/\/ s=Test, v=Data\r\n<\/code><\/pre>\n
Spring\u306e@Value\u306e\u4f8b<\/h2>\n
\u7c21\u5358\u306aSpring\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3057\u307e\u3057\u3087\u3046\u3002\u3053\u306e\u4e2d\u3067\u3001@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8aad\u307f\u53d6\u308a\u3001\u30af\u30e9\u30b9\u5909\u6570\u306b\u5272\u308a\u5f53\u3066\u307e\u3059\u3002Maven\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001spring core\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
<dependency>\r\n\t<groupId>org.springframework<\/groupId>\r\n\t<artifactId>spring-context<\/artifactId>\r\n\t<version>5.0.6.RELEASE<\/version>\r\n<\/dependency>\r\n<\/code><\/pre>\n
\"Spring<\/div>\n
package com.scdev.spring;\r\n\r\nimport org.springframework.beans.factory.annotation.Value;\r\n\r\npublic class DBConnection {\r\n\r\n\t@Value(\"${DB_DRIVER_CLASS}\")\r\n\tprivate String driverClass;\r\n\t@Value(\"${DB_URL}\")\r\n\tprivate String dbURL;\r\n\t@Value(\"${DB_USERNAME}\")\r\n\tprivate String userName;\r\n\t@Value(\"${DB_PASSWORD}\")\r\n\tprivate char[] password;\r\n\r\n\tpublic DBConnection() {\r\n\t}\r\n\r\n\tpublic void printDBConfigs() {\r\n\t\tSystem.out.println(\"Driver Class = \" + driverClass);\r\n\t\tSystem.out.println(\"DB URL = \" + dbURL);\r\n\t\tSystem.out.println(\"User Name = \" + userName);\r\n\r\n\t\t\/\/ Never do below in production environment :D\r\n\t\tSystem.out.println(\"Password = \" + String.valueOf(password));\r\n\t}\r\n}\r\n<\/code><\/pre>\n
\u4eca\u3001\u6211\u3005\u306f Configuration \u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001DBConnection \u30af\u30e9\u30b9\u306e\u305f\u3081\u306b @Bean \u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
package com.scdev.spring;\r\n\r\nimport org.springframework.beans.factory.annotation.Value;\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.context.annotation.PropertySource;\r\n\r\n@Configuration\r\n@PropertySource(\"classpath:db.properties\")\r\n@PropertySource(value = \"classpath:root.properties\", ignoreResourceNotFound = true)\r\npublic class DBConfiguration {\r\n\r\n\t@Value(\"Default DBConfiguration\")\r\n\tprivate String defaultName;\r\n\r\n\t@Value(\"true\")\r\n\tprivate boolean defaultBoolean;\r\n\r\n\t@Value(\"10\")\r\n\tprivate int defaultInt;\r\n\r\n\t@Value(\"${APP_NAME_NOT_FOUND:Default}\")\r\n\tprivate String defaultAppName;\r\n\r\n\t\/\/ @Value(\"#{systemProperties['java.home']}\")\r\n\t@Value(\"${java.home}\")\r\n\tprivate String javaHome;\r\n\r\n\t@Value(\"${HOME}\")\r\n\tprivate String homeDir;\r\n\r\n\t@Bean\r\n\tpublic DBConnection getDBConnection() {\r\n\t\tDBConnection dbConnection = new DBConnection();\r\n\t\treturn dbConnection;\r\n\t}\r\n\r\n\t@Value(\"Test\")\r\n\tpublic void printValues(String s, @Value(\"another variable\") String v) {\r\n\t\tSystem.out.println(\"Input Argument 1 =\" + s);\r\n\t\tSystem.out.println(\"Input Argument 2 =\" + v);\r\n\r\n\t\tSystem.out.println(\"Home Directory = \" + homeDir);\r\n\t\tSystem.out.println(\"Default Configuration Name = \" + defaultName);\r\n\t\tSystem.out.println(\"Default App Name = \" + defaultAppName);\r\n\t\tSystem.out.println(\"Java Home = \" + javaHome);\r\n\t\tSystem.out.println(\"Boolean = \" + defaultBoolean);\r\n\t\tSystem.out.println(\"Int = \" + defaultInt);\r\n\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u3053\u3061\u3089\u306f\u3001\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u30d9\u30fc\u30b9\u306eSpring\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u4e3b\u8981\u306a\u30af\u30e9\u30b9\u3067\u3059\u3002<\/p>\n
package com.scdev.spring;\r\n\r\nimport java.sql.SQLException;\r\n\r\nimport org.springframework.context.annotation.AnnotationConfigApplicationContext;\r\n\r\npublic class SpringMainClass {\r\n\r\n\tpublic static void main(String[] args) throws SQLException {\r\n\t\tAnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();\r\n\t\tcontext.scan(\"com.scdev.spring\");\r\n\t\tcontext.refresh();\r\n\t\tSystem.out.println(\"Refreshing the spring context\");\r\n\t\tDBConnection dbConnection = context.getBean(DBConnection.class);\r\n\r\n\t\tdbConnection.printDBConfigs();\r\n\t\t\r\n\t\t\/\/ close the spring context\r\n\t\tcontext.close();\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u30af\u30e9\u30b9\u3092\u5b9f\u884c\u3059\u308c\u3070\u3001\u6b21\u306e\u51fa\u529b\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n
Input Argument 1 =Test\r\nInput Argument 2 =another variable\r\nHome Directory = \/Users\/scdev\r\nDefault Configuration Name = Default DBConfiguration\r\nDefault App Name = Default\r\nJava Home = \/Library\/Java\/JavaVirtualMachines\/jdk-10.0.1.jdk\/Contents\/Home\r\nBoolean = true\r\nInt = 10\r\nRefreshing the spring context\r\nDriver Class = com.mysql.jdbc.Driver\r\nDB URL = jdbc:mysql:\/\/localhost:3306\/Test\r\nUser Name = scdev\r\nPassword = scdev\r\n<\/code><\/pre>\n
\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u304c\u30e6\u30fc\u30b6\u30fc\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3059\u308b\u6e96\u5099\u304c\u6574\u3046\u524d\u306b\u3001Configuration\u30af\u30e9\u30b9\u306eprintValues()\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u304cSpring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u4f8b\u3067\u3059\u3002\u79c1\u305f\u3061\u306eGitHub\u30ea\u30dd\u30b8\u30c8\u30ea\u304b\u3089\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u3002<\/p>\n
Spring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30b8\u30a7\u30af\u30c8<\/p>\n","protected":false},"excerpt":{"rendered":"
Spring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u5909\u6570\u3084\u30e1\u30bd\u30c3\u30c9\u5f15\u6570\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u5272\u308a\u5f53\u3066\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001Spring\u306e\u74b0\u5883\u5909\u6570\u3084\u30b7\u30b9\u30c6\u30e0\u5909\u6570\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001 […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-774","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nSpring\u306e@Value\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3002 - 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