{"id":40298,"date":"2023-03-12T18:31:06","date_gmt":"2023-07-09T00:25:02","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8kotlin%e5%92%8cspring-boot%e6%9e%84%e5%bb%ba%e7%9a%84%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%ef%bc%8c%e9%80%9a%e8%bf%87%e8%ae%bf%e9%97%aemysql%e6%9d%a5%e5%ae%9e%e7%8e%b0hello-world\/"},"modified":"2024-01-15T10:33:53","modified_gmt":"2024-01-15T02:33:53","slug":"%e4%bd%bf%e7%94%a8kotlin%e5%92%8cspring-boot%e6%9e%84%e5%bb%ba%e7%9a%84%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%ef%bc%8c%e9%80%9a%e8%bf%87%e8%ae%bf%e9%97%aemysql%e6%9d%a5%e5%ae%9e%e7%8e%b0hello-world","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8kotlin%e5%92%8cspring-boot%e6%9e%84%e5%bb%ba%e7%9a%84%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%ef%bc%8c%e9%80%9a%e8%bf%87%e8%ae%bf%e9%97%aemysql%e6%9d%a5%e5%ae%9e%e7%8e%b0hello-world\/","title":{"rendered":"\u4f7f\u7528Kotlin\u548cSpring Boot\u6784\u5efa\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u901a\u8fc7\u8bbf\u95eeMySQL\u6765\u5b9e\u73b0Hello World"},"content":{"rendered":"

\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Kotlin\u3001Spring Boot\u548cMySQL\u6765\u4fdd\u5b58\u548c\u8f93\u51faHello World\u3002<\/p>\n

\u51c6\u5907MySQL\u955c\u50cf\uff0c\u5e76\u4f7f\u7528docker-compose\u8fdb\u884c\u542f\u52a8\u3002<\/h2>\n
version<\/span>:<\/span> '<\/span>3'<\/span>\r\nservices<\/span>:<\/span>\r\n    mysql<\/span>:<\/span>\r\n        image<\/span>:<\/span> mysql:5.7<\/span>\r\n        container_name<\/span>:<\/span> mysql_playground<\/span>\r\n        environment<\/span>:<\/span>\r\n            MYSQL_ROOT_PASSWORD<\/span>:<\/span> mysql<\/span>\r\n            MYSQL_DATABASE<\/span>:<\/span> playground<\/span>\r\n            MYSQL_USER<\/span>:<\/span> docker<\/span>\r\n            MYSQL_PASSWORD<\/span>:<\/span> docker<\/span>\r\n        volumes<\/span>:<\/span>\r\n            .\/mysql\/init:\/docker-entrypoint-initdb.d<\/span>\r\n        ports<\/span>:<\/span>\r\n            3306:3306<\/span>\r\n<\/code><\/pre>\n
\u5c06SQL\u6587\u4ef6\u5b58\u50a8\u5728\/docker-entrypoint-initidb.d\u4e2d\uff0c\u5bb9\u5668\u542f\u52a8\u65f6\u5c06\u81ea\u52a8\u6267\u884c\u3002<\/p>\n
\u5728\u8fd9\u91cc\u5b58\u50a8\u7740\u521b\u5efa\u6570\u636e\u5e93\u548c\u8868\u7684DDL SQL\u8bed\u53e5\u3002<\/p>\n
CREATE TABLE hello_worlds\r\n(\r\n    `id`   int(11)      NOT NULL AUTO_INCREMENT,\r\n        `hello_world` varchar(100) NOT NULL DEFAULT 'Hello, World!',\r\n        PRIMARY KEY (id)\r\n) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4;\r\n<\/code><\/pre>\n
\u7531\u4e8edocker-compose\u7684\u914d\u7f6e\u5df2\u5b8c\u6210\uff0c\u5c06\u8fdb\u884c\u542f\u52a8\u786e\u8ba4\u3002<\/p>\n
$ <\/span>docker-compose up\r\nCreating network \"simple-mysql_default\"<\/span> with the default driver\r\nCreating mysql_helloworld ... done\r\n<\/span>Attaching to mysql_helloworld \r\nmysql_helloworld | Initializing database\r\n(<\/span>...)<\/span>\r\nmysql_helloworld | 2019-12-28T02:39:53.408712Z 0 [<\/span>Note] mysqld: ready for <\/span>connections.\r\nmysql_helloworld | Version: '5.7.27'<\/span>  socket: '\/var\/run\/mysqld\/mysqld.sock'<\/span>  port: 3306  MySQL Community Server (<\/span>GPL)<\/span>\r\n<\/code><\/pre>\n
\u6210\u529f\u542f\u52a8\u4e86\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u5c06\u4f7f\u7528\u672c\u5730\u7684mysql\u547d\u4ee4\u8fde\u63a5\u5230\u5df2\u542f\u52a8\u7684MySQL\u3002<\/p>\n
$ <\/span>mysql -h<\/span> 0.0.0.0 -u<\/span> helloworld_user -p<\/span>\r\nmysql>  SHOW VARIABLES LIKE \"%version%\"<\/span>;<\/span>\r\n+-------------------------+------------------------------+\r\n| Variable_name           | Value                        |\r\n+-------------------------+------------------------------+\r\n| innodb_version          | 5.7.27                       |\r\n| protocol_version        | 10                           |\r\n| slave_type_conversions  |                              |\r\n| tls_version             | TLSv1,TLSv1.1                |\r\n| version                 | 5.7.27                       |\r\n| version_comment         | MySQL Community Server (<\/span>GPL)<\/span> |\r\n| version_compile_machine | x86_64                       |\r\n| version_compile_os      | Linux                        |\r\n+-------------------------+------------------------------+\r\n8 rows in <\/span>set<\/span> (<\/span>0.01 sec)<\/span>\r\n<\/code><\/pre>\n
\u51c6\u5907\u4e00\u4e2aSpring Boot\u5e94\u7528\u7a0b\u5e8f<\/h2>\n
\u4ee5\u4e0b\u662f\u524d\u7bc7\u6587\u7ae0\u4e2d\u521b\u5efa\u7684\u57fa\u4e8eKotlin\u548cSpring Boot\u5e94\u7528\u7a0b\u5e8f\u7684\u8fd4\u56deHello World\u7684\u7aef\u70b9\u7684\u5b9e\u73b0\u4f5c\u4e3a\u57fa\u7840\u3002<\/p>\n
\u9996\u5148\uff0c\u5c06Spring JPA\u548cMySQL Driver\u6dfb\u52a0\u5230\u4f9d\u8d56\u9879\u4e2d\uff08\u7531\u4e8e\u662fkts\u6587\u4ef6\uff0c\u8bf7\u5c0f\u5fc3\uff09\u3002<\/p>\n
dependencies<\/span> {<\/span>\r\n    implementation<\/span>(<\/span>\"org.springframework.boot:spring-boot-starter-web\"<\/span>)<\/span>\r\n    implementation<\/span>(<\/span>\"org.springframework.boot:spring-boot-starter-data-jpa\"<\/span>)<\/span>\r\n    runtimeOnly<\/span> (<\/span>\"mysql:mysql-connector-java\"<\/span>)<\/span>\r\n    implementation<\/span>(<\/span>\"com.fasterxml.jackson.module:jackson-module-kotlin\"<\/span>)<\/span>\r\n    implementation<\/span>(<\/span>\"org.jetbrains.kotlin:kotlin-reflect\"<\/span>)<\/span>\r\n    implementation<\/span>(<\/span>\"org.jetbrains.kotlin:kotlin-stdlib-jdk8\"<\/span>)<\/span>\r\n    testImplementation<\/span>(<\/span>\"org.springframework.boot:spring-boot-starter-test\"<\/span>)<\/span> {<\/span>\r\n        exclude<\/span>(<\/span>group<\/span> =<\/span> \"org.junit.vintage\"<\/span>,<\/span> module<\/span> =<\/span> \"junit-vintage-engine\"<\/span>)<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e00\u65e6\u5b8c\u6210Dependencies\u7684\u8bbe\u7f6e\u540e\uff0c\u63a5\u4e0b\u6765\u9700\u8981\u5199\u4e0b\u8fde\u63a5MySQL\u6240\u9700\u8981\u7684\u8fde\u63a5\u4fe1\u606f\u3002<\/p>\n
spring.jpa.hibernate.ddl-auto<\/span>=<\/span>update<\/span>\r\nspring.datasource.url<\/span>=<\/span>jdbc:mysql:\/\/0.0.0.0:3306\/helloworld<\/span>\r\nspring.datasource.username<\/span>=<\/span>helloworld_user<\/span>\r\nspring.datasource.password<\/span>=<\/span>helloworld<\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u8fd9\u4e2a\u5e94\u7528\u7a0b\u5e8f\uff0c\u8fde\u63a5\u8bbe\u7f6e\u5df2\u7ecf\u5b8c\u6210\u3002\u63a5\u4e0b\u6765\u6211\u4eec\u5c06\u7f16\u5199\u4ee3\u7801\u6765\u5b9e\u9645\u4f7f\u7528MySQL\u3002<\/p>\n
    @RestController<\/span>\r\n    class<\/span> HelloWorldController<\/span>(<\/span>private<\/span> val<\/span> service<\/span>:<\/span> HelloWorldService<\/span>)<\/span> {<\/span>\r\n        @GetMapping<\/span>(<\/span>\"\/hello-worlds\/{id}\"<\/span>)<\/span>\r\n        fun<\/span> getHelloWorld<\/span>(<\/span>@PathVariable<\/span>(<\/span>\"id\"<\/span>)<\/span> id<\/span>:<\/span> Int<\/span>)<\/span> =<\/span> service<\/span>.<\/span>getHelloWorld<\/span>(<\/span>id<\/span>)<\/span>\r\n\r\n        @GetMapping<\/span>(<\/span>\"\/hello-worlds\"<\/span>)<\/span>\r\n        fun<\/span> getHelloWorldList<\/span>()<\/span> =<\/span> service<\/span>.<\/span>getHelloWorldList<\/span>()<\/span>\r\n        @PostMapping<\/span>(<\/span>\"\/hello-worlds\"<\/span>)<\/span>\r\n        fun<\/span> saveHelloWorld<\/span>(<\/span>@RequestParam<\/span>(<\/span>\"message\"<\/span>)<\/span> message<\/span>:<\/span> String<\/span>)<\/span> =<\/span>\r\n            service<\/span>.<\/span>insertHelloWorld<\/span>(<\/span>message<\/span>)<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
    @Service<\/span>\r\n    class<\/span> HelloWorldService<\/span>(<\/span>\r\n        private<\/span> val<\/span> repository<\/span>:<\/span> HelloWorldRepository<\/span>\r\n    )<\/span> {<\/span>\r\n        fun<\/span> getHelloWorld<\/span>(<\/span>id<\/span>:<\/span> Int<\/span>)<\/span> =<\/span> repository<\/span>.<\/span>findById<\/span>(<\/span>id<\/span>)<\/span>\r\n        fun<\/span> getHelloWorldList<\/span>()<\/span> =<\/span> repository<\/span>.<\/span>findAll<\/span>()<\/span>\r\n        fun<\/span> insertHelloWorld<\/span>(<\/span>message<\/span>:<\/span> String<\/span>)<\/span> =<\/span> HelloWorld<\/span>(<\/span>message<\/span>).<\/span>let<\/span> {<\/span> repository<\/span>.<\/span>save<\/span>(<\/span>it<\/span>)<\/span> }<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
    interface<\/span> HelloWorldRepository<\/span> :<\/span> CrudRepository<\/span><<\/span>HelloWorld<\/span>,<\/span> Int<\/span>><\/span>\r\n<\/code><\/pre>\n
    @Entity<\/span>\r\n    data class<\/span> HelloWorld<\/span>(<\/span>\r\n        var<\/span> message<\/span>:<\/span> String<\/span> =<\/span> \"Hello, World!\"<\/span>,<\/span>\r\n        @Id<\/span>\r\n        @GeneratedValue<\/span>(<\/span>strategy<\/span> =<\/span> GenerationType<\/span>.<\/span>AUTO<\/span>)<\/span>\r\n        var<\/span> id<\/span>:<\/span> Int<\/span> =<\/span> 0<\/span>\r\n    )<\/span>\r\n<\/code><\/pre>\n
\u4ee5\u4e0a\u662f\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u7684\u7f16\u5199\u5b8c\u6210\u3002<\/p>\n
\u542f\u52a8\u5e94\u7528\u7a0b\u5e8f\uff0c\u4f7f\u7528curl\u8fdb\u884cPOST\u548cGET\u8bf7\u6c42\uff0c\u4fdd\u5b58\u548c\u83b7\u53d6Hello World\uff0c\u5c31\u50cf\u4e0a\u4e00\u6b21\u4e00\u6837\u3002<\/p>\n
$ <\/span>gradle bootRun\r\n(<\/span>...)<\/span>\r\n2019-12-28 12:15:00.727  INFO 52141 ---<\/span> [<\/span>           main] c.e.helloworld.HelloworldApplicationKt   : Started HelloworldApplicationKt in <\/span>4.021 seconds (<\/span>JVM running for <\/span>4.415)<\/span>\r\n\r\n$ <\/span>curl -X<\/span> POST --data<\/span> 'message=Hello, World!'<\/span> localhost:8080\/hello-worlds\r\n{<\/span>\"message\"<\/span>:\"Hello, World!\"<\/span>,\"id\"<\/span>:1}<\/span>\r\n\r\n$ <\/span>curl -X<\/span> POST --data<\/span> 'message=Hello, World!'<\/span> localhost:8080\/hello-worlds\r\n{<\/span>\"message\"<\/span>:\"Hello, World!\"<\/span>,\"id\"<\/span>:2}<\/span>\r\n\r\n$ <\/span>curl localhost:8080\/hello-worlds\/1\r\n{<\/span>\"message\"<\/span>:\"Hello, World\"<\/span>,\"id\"<\/span>:1}<\/span>\r\n\r\n$ <\/span>curl localhost:8080\/hello-worlds\r\n[{<\/span>\"message\"<\/span>:\"Hello, World!\"<\/span>,\"id\"<\/span>:1}<\/span>,{<\/span>\"message\"<\/span>:\"Hello, World!\"<\/span>,\"id\"<\/span>:2}]<\/span>\r\n<\/code><\/pre>\n
\u4f60\u597d\uff0c\u4e16\u754c\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Kotlin\u3001Spring Boot\u548cMySQL\u6765\u4fdd\u5b58\u548c\u8f93\u51faHello World\u3002 \u51c6\u5907 […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-40298","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528Kotlin\u548cSpring Boot\u6784\u5efa\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u901a\u8fc7\u8bbf\u95eeMySQL\u6765\u5b9e\u73b0Hello World - Blog - Silicon Cloud<\/title>\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\/zh\/blog\/\u4f7f\u7528kotlin\u548cspring-boot\u6784\u5efa\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u901a\u8fc7\u8bbf\u95eemysql\u6765\u5b9e\u73b0hello-world\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Kotlin\u548cSpring Boot\u6784\u5efa\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u901a\u8fc7\u8bbf\u95eeMySQL\u6765\u5b9e\u73b0Hello World\" \/>\n<meta property=\"og:description\" content=\"\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Kotlin\u3001Spring Boot\u548cMySQL\u6765\u4fdd\u5b58\u548c\u8f93\u51faHello World\u3002 \u51c6\u5907 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528kotlin\u548cspring-boot\u6784\u5efa\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u901a\u8fc7\u8bbf\u95eemysql\u6765\u5b9e\u73b0hello-world\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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