{"id":6373,"date":"2026-04-28T13:34:57","date_gmt":"2026-04-28T04:34:57","guid":{"rendered":"https:\/\/route-zero.com\/recruit\/?post_type=route&p=6373"},"modified":"2026-09-28T13:35:25","modified_gmt":"2026-09-28T04:35:25","slug":"spring-data-jpa-repository-entity-basics","status":"publish","type":"route","link":"https:\/\/route-zero.com\/recruit\/route\/6373\/","title":{"rendered":"Spring Data JPA\u306e\u5f79\u5272\u3092\u3064\u304b\u3080\uff5c\u57fa\u672c\u69cb\u6210"},"content":{"rendered":"

Spring Data JPA\u3092\u4f7f\u3063\u3066\u3044\u308b\u3068\u3001Entity\u3084Repository\u306f\u66f8\u3051\u308b\u3082\u306e\u306e\u3001\u300c\u3069\u3053\u307e\u3067\u304cJPA\u3067\u3001Spring Data JPA\u304c\u4f55\u3092\u8ffd\u52a0\u3057\u3066\u3044\u308b\u306e\u304b\u300d\u304c\u66d6\u6627\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u5f79\u5272\u3092\u5206\u3051\u3066\u7406\u89e3\u3059\u308b\u3068\u3001save\u3084Query\u3067\u8ff7\u3063\u305f\u3068\u304d\u306e\u5207\u308a\u5206\u3051\u304c\u901f\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u307e\u305a\u7d50\u8ad6\uff1aSpring Data JPA\u306fJPA\u306e\u4e0a\u3067Repository\u5b9f\u88c5\u3092\u7701\u529b\u5316\u3059\u308b<\/h2>\n

JPA\u306fJava\u3067\u6c38\u7d9a\u5316\u3092\u6271\u3046\u305f\u3081\u306e\u4ed5\u69d8\u3067\u3059\u3002Spring Data JPA\u306f\u3001\u305d\u306eJPA\u3092\u5229\u7528\u3057\u306a\u304c\u3089Repository\u62bd\u8c61\u5316\u3084\u30af\u30a8\u30ea\u751f\u6210\u306a\u3069\u3092\u63d0\u4f9b\u3057\u3001\u5178\u578b\u7684\u306a\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u30b3\u30fc\u30c9\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002<\/p>\n

\n

\u7528\u8a9e\u89e3\u8aac\uff1aRepository<\/strong>
\u30c9\u30e1\u30a4\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4fdd\u5b58\u30fb\u53d6\u5f97\u306a\u3069\u3001\u6c38\u7d9a\u5316\u30a2\u30af\u30bb\u30b9\u3092\u307e\u3068\u3081\u308b\u5883\u754c\u3067\u3059\u3002Spring Data\u3067\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9a\u7fa9\u3057\u3001\u57fa\u672cCRUD\u306e\u5b9f\u88c5\u3092\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3078\u59d4\u306d\u3089\u308c\u307e\u3059\u3002<\/p>\n<\/blockquote>\n

\uff08JPA\u81ea\u4f53\u3068JDBC\u306e\u9055\u3044\u304b\u3089\u6574\u7406\u3057\u305f\u3044\u5834\u5408\u306b\u3064\u3044\u3066\u306f\u300e\u3010\u4fdd\u5b58\u7248\u3011JPA vs JDBC\u3092\u5fb9\u5e95\u6bd4\u8f03\uff01\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u4f7f\u3044\u5206\u3051<\/a>\u300f\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\uff09<\/p>\n

\n

1. Entity\u306f\u6c38\u7d9a\u5316\u3059\u308b\u30af\u30e9\u30b9\u3092\u8868\u3059<\/h2>\n

Jakarta Persistence\u3067\u306f\u3001Entity\u30af\u30e9\u30b9\u306f@Entity\u3067\u793a\u3057\u3001\u4e3b\u30ad\u30fc\u3092\u6301\u3064\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Spring Boot 3\u7cfb\u4ee5\u964d\u306e\u30b3\u30fc\u30c9\u4f8b\u3067\u306fjakarta.persistence\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u3046\u69cb\u6210\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n

import jakarta.persistence.Entity;\r\nimport jakarta.persistence.GeneratedValue;\r\nimport jakarta.persistence.Id;\r\n\r\n@Entity\r\npublic class User {\r\n    @Id\r\n    @GeneratedValue\r\n    private Long id;\r\n    private String name;\r\n\r\n    protected User() {}\r\n\r\n    public void setName(String name) {\r\n        this.name = name;\r\n    }\r\n}<\/code><\/pre>\n
\n
2. Repository\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u57fa\u672cCRUD\u3092\u53d7\u3051\u53d6\u308b<\/h2>\n
Spring Data\u306eRepository\u62bd\u8c61\u5316\u3067\u306f\u3001CrudRepository\u3084JpaRepository\u306a\u3069\u3092\u7d99\u627f\u3057\u3066\u3001\u4fdd\u5b58\u30fb\u691c\u7d22\u30fb\u524a\u9664\u306e\u57fa\u672c\u64cd\u4f5c\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u5b9f\u88c5\u30af\u30e9\u30b9\u3092\u6bce\u56de\u624b\u66f8\u304d\u3057\u306a\u3044\u3053\u3068\u304c\u5927\u304d\u306a\u5229\u70b9\u3067\u3059\u3002<\/p>\n
import org.springframework.data.jpa.repository.JpaRepository;\r\n\r\npublic interface UserRepository\r\n        extends JpaRepository<User, Long> {\r\n}<\/code><\/pre>\n
\n
3. save\u306f\u65b0\u898fEntity\u3068\u65e2\u5b58Entity\u3067\u5185\u90e8\u51e6\u7406\u304c\u5206\u304b\u308c\u308b<\/h2>\n
Spring Data JPA\u306e\u516c\u5f0f\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3067\u306f\u3001save\u306fEntity\u304c\u65b0\u898f\u306a\u3089EntityManager.persist\u3001\u65e2\u5b58\u3068\u5224\u5b9a\u3055\u308c\u308c\u3070EntityManager.merge\u3092\u4f7f\u3046\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5358\u306b\u300c\u5fc5\u305aINSERT\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u300d\u3068\u899a\u3048\u306a\u3044\u65b9\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n
User user = new User();\r\nuser.setName("Sato");\r\n\r\nUser saved = userRepository.save(user);<\/code><\/pre>\n
\u5b9f\u969b\u306eSQL\u767a\u884c\u30bf\u30a4\u30df\u30f3\u30b0\u306fflush\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5883\u754c\u306b\u3082\u95a2\u4fc2\u3057\u307e\u3059\u3002save\u306e\u547c\u3073\u51fa\u3057\u4f4d\u7f6e\u3060\u3051\u3067SQL\u306e\u767a\u884c\u6642\u70b9\u3092\u65ad\u5b9a\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
4. \u5358\u7d14\u306a\u691c\u7d22\u306f\u30e1\u30bd\u30c3\u30c9\u540d\u304b\u3089Query\u3092\u7d44\u307f\u7acb\u3066\u3089\u308c\u308b<\/h2>\n
Spring Data JPA\u3067\u306f\u3001\u4e00\u5b9a\u306e\u547d\u540d\u898f\u5247\u306b\u6cbf\u3063\u305fRepository\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u691c\u7d22\u6761\u4ef6\u3092\u7d44\u307f\u7acb\u3066\u3089\u308c\u307e\u3059\u3002\u5358\u7d14\u306a\u6761\u4ef6\u306a\u3089SQL\u3084JPQL\u3092\u76f4\u63a5\u66f8\u304b\u305a\u306b\u610f\u56f3\u3092\u8868\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n
import java.util.List;\r\n\r\nList<User> findByName(String name);\r\nList<User> findByNameContaining(String keyword);<\/code><\/pre>\n
5. \u8907\u96d1\u306a\u691c\u7d22\u3067\u306f@Query\u3092\u4f7f\u3046<\/h2>\n
\u30e1\u30bd\u30c3\u30c9\u540d\u304c\u9577\u304f\u306a\u308a\u3059\u304e\u308b\u3001JOIN\u3084\u96c6\u8a08\u306a\u3069\u30af\u30a8\u30ea\u3092\u660e\u793a\u3057\u305f\u3044\u5834\u5408\u306f@Query\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002JPQL\u3068nativeQuery\u3092\u6df7\u540c\u305b\u305a\u3001\u5fc5\u8981\u6027\u306b\u5fdc\u3058\u3066\u9078\u3073\u307e\u3059\u3002<\/p>\n
import org.springframework.data.jpa.repository.Query;\r\nimport org.springframework.data.repository.query.Param;\r\n\r\n@Query("select u from User u where u.name = :name")\r\nList<User> searchByName(@Param("name") String name);<\/code><\/pre>\n
\uff08Repository\u306e@Query\u3084nativeQuery\u3092\u8a73\u3057\u304f\u78ba\u8a8d\u3057\u305f\u3044\u5834\u5408\u306b\u3064\u3044\u3066\u306f\u300eSpring Boot Repository\u5fb9\u5e95\u89e3\u8aac\uff5c@Query\u30fbnativeQuery\u306e\u4f7f\u3044\u65b9\u3068\u5b9f\u8df5\u4f8b<\/a>\u300f\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\uff09<\/p>\n
6. JPA\u30fbSpring Data JPA\u30fbHibernate\u306e\u5f79\u5272\u3092\u6df7\u305c\u306a\u3044<\/h2>\n\n\n\n\n\n\n\n
\u540d\u524d<\/th>\n\u4e3b\u306a\u5f79\u5272<\/th>\n<\/tr>\n<\/thead>\n
JPA \/ Jakarta Persistence<\/td>\n\u6c38\u7d9a\u5316\u306e\u6a19\u6e96\u4ed5\u69d8<\/td>\n<\/tr>\n
Spring Data JPA<\/td>\nRepository\u62bd\u8c61\u5316\u306a\u3069JPA\u5229\u7528\u3092\u652f\u63f4\u3059\u308bSpring Data\u30e2\u30b8\u30e5\u30fc\u30eb<\/td>\n<\/tr>\n
Hibernate<\/td>\nJPA\u306e\u4ee3\u8868\u7684\u306a\u5b9f\u88c5\u306e\u4e00\u3064<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u30a8\u30e9\u30fc\u8abf\u67fb\u3067\u306f\u3001\u4ed5\u69d8\u306e\u554f\u984c\u306a\u306e\u304b\u3001Spring Data\u306eRepository\u5c64\u306a\u306e\u304b\u3001\u5b9f\u88c5\u30d7\u30ed\u30d0\u30a4\u30c0\u56fa\u6709\u306e\u6319\u52d5\u306a\u306e\u304b\u3092\u5206\u3051\u3066\u78ba\u8a8d\u3059\u308b\u3068\u539f\u56e0\u3092\u7d5e\u308a\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n
Spring Data JPA\u3092\u4f7f\u3048\u3070EntityManager\u306f\u4e0d\u8981\u3067\u3059\u304b\uff1f<\/h3>\n
\u5178\u578b\u7684\u306aCRUD\u306fRepository\u3067\u6271\u3048\u307e\u3059\u304c\u3001\u3088\u308a\u4f4e\u30ec\u30d9\u30eb\u306a\u6c38\u7d9a\u5316\u5236\u5fa1\u304c\u5fc5\u8981\u306a\u5834\u9762\u3067\u306fEntityManager\u3092\u4f7f\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7528\u9014\u3067\u9078\u3073\u307e\u3059\u3002<\/p>\n
Repository\u306bSQL\u3092\u66f8\u304b\u306a\u304f\u3066\u3082\u691c\u7d22\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n
\u5358\u7d14\u306a\u6761\u4ef6\u306f\u30e1\u30bd\u30c3\u30c9\u540d\u304b\u3089\u30af\u30a8\u30ea\u3092\u5c0e\u51fa\u3067\u304d\u307e\u3059\u3002\u8907\u96d1\u306a\u6761\u4ef6\u3084\u660e\u793a\u6027\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f@Query\u306a\u3069\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u3068\u3081\uff1aRepository\u306e\u5f79\u5272\u3092\u8d77\u70b9\u306b\u6574\u7406\u3059\u308b<\/h2>\n
    \n
  • JPA\u306f\u6c38\u7d9a\u5316\u4ed5\u69d8\u3001Spring Data JPA\u306f\u305d\u306e\u5229\u7528\u3092\u652f\u63f4\u3059\u308b<\/li>\n
  • Entity\u306f\u6c38\u7d9a\u5316\u5bfe\u8c61\u3068\u4e3b\u30ad\u30fc\u3092\u5b9a\u7fa9\u3059\u308b<\/li>\n
  • Repository\u7d99\u627f\u3067\u57fa\u672cCRUD\u3092\u5229\u7528\u3067\u304d\u308b<\/li>\n
  • save\u306f\u65b0\u898f\u30fb\u65e2\u5b58\u5224\u5b9a\u3067persist\/merge\u3092\u4f7f\u3044\u5206\u3051\u308b<\/li>\n
  • \u5358\u7d14\u691c\u7d22\u306f\u30e1\u30bd\u30c3\u30c9\u540d\u3001\u8907\u96d1\u306a\u691c\u7d22\u306f@Query\u3092\u691c\u8a0e\u3059\u308b<\/li>\n<\/ul>\n
    \u624b\u5143\u306eRepository\u30921\u3064\u958b\u304d\u3001Entity\u30fb\u4e3b\u30ad\u30fc\u578b\u30fb\u7d99\u627f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30fb\u691c\u7d22\u30e1\u30bd\u30c3\u30c9\u306e4\u70b9\u3092\u5bfe\u5fdc\u4ed8\u3051\u3066\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"featured_media":6375,"template":"","meta":{"ssp_meta_title":"Spring Data JPA\u3068\u306f\uff1fRepository\u30fbEntity\u30fbsave\u30fbQuery\u306e\u57fa\u672c\u3092\u89e3\u8aac","ssp_meta_description":"Spring Data JPA\u306e\u5f79\u5272\u3092\u5b9f\u52d9\u5411\u3051\u306b\u89e3\u8aac\u3002JPA\u3068\u306e\u9055\u3044\u3001Entity\u30fbRepository\u306e\u6700\u5c0f\u69cb\u6210\u3001save\u306e\u6319\u52d5\u3001\u30e1\u30bd\u30c3\u30c9\u540d\u30af\u30a8\u30ea\u3068@Query\u306e\u4f7f\u3044\u5206\u3051\u307e\u3067\u6574\u7406\u3057\u307e\u3059\u3002","ssp_meta_keyword":"Spring Data JPA,Spring Data JPA \u3068\u306f,JpaRepository,Spring Boot Repository,JPA Entity,Spring Data save,Spring Data @Query","ssp_meta_canonical":""},"route_category":[9],"_links":{"self":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route\/6373"}],"collection":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route"}],"about":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/types\/route"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/media\/6375"}],"wp:attachment":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/media?parent=6373"}],"wp:term":[{"taxonomy":"route_category","embeddable":true,"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route_category?post=6373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}