{"id":23330,"date":"2024-09-15T14:23:55","date_gmt":"2024-09-15T07:23:55","guid":{"rendered":"https:\/\/huongdanjava.com\/?p=23330"},"modified":"2025-10-09T09:36:28","modified_gmt":"2025-10-09T02:36:28","slug":"grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter","status":"publish","type":"post","link":"https:\/\/huongdanjava.com\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html","title":{"rendered":"gRPC server with Spring Boot using grpc-server-spring-boot-starter"},"content":{"rendered":"

There is currently no official starter supporting gRPC in Spring Boot, but you can also use the starters developed by the community in the GitHub repository https:\/\/github.com\/grpc-ecosystem\/grpc-spring<\/a>. In this tutorial, I will guide you on how to build a gRPC server with Spring Boot using grpc-server-spring-boot-starter in this GitHub repository!<\/p>\n

First, I will create a new Spring Boot project as an example:<\/p>\n

\"\"<\/p>\n

We will declare the grpc-server-spring-boot-starter as follows:<\/p>\n

<dependency>\r\n  <groupId>net.devh<\/groupId>\r\n  <artifactId>grpc-server-spring-boot-starter<\/artifactId>\r\n  <version>3.1.0.RELEASE<\/version>\r\n<\/dependency>\r\n\r\n<dependency>\r\n  <groupId>javax.annotation<\/groupId>\r\n  <artifactId>javax.annotation-api<\/artifactId>\r\n  <version>1.3.2<\/version>\r\n<\/dependency><\/pre>\n
Here, I will use Protocol Buffers Maven Plugin<\/a> to generate Java code for the gRPC service contract, so as you can see, I also declared the javax.annotation-api dependency to avoid compilation errors after generating source code.<\/p>\n
The .proto file in the src\/main\/proto folder defines the service contract, I will define it simply as follows:<\/p>\n
syntax = \"proto3\";\r\n\r\noption java_multiple_files = true;\r\n\r\npackage com.huongdanjava.springboot.grpc;\r\n\r\nmessage HelloRequest {\r\n  string name = 1;\r\n}\r\n\r\nmessage HelloResponse {\r\n  string message = 1;\r\n}\r\n\r\nservice HelloService {\r\n  rpc hello(HelloRequest) returns (HelloResponse);\r\n}<\/pre>\n
Protocol Buffers Maven Plugin I declare as follows:<\/p>\n
<build>\r\n  <extensions>\r\n    <extension>\r\n      <groupId>kr.motd.maven<\/groupId>\r\n      <artifactId>os-maven-plugin<\/artifactId>\r\n      <version>1.7.1<\/version>\r\n    <\/extension>\r\n  <\/extensions>\r\n  <plugins>\r\n    <plugin>\r\n      <groupId>org.xolstice.maven.plugins<\/groupId>\r\n      <artifactId>protobuf-maven-plugin<\/artifactId>\r\n      <version>0.6.1<\/version>\r\n      <configuration>\r\n        <protocArtifact>com.google.protobuf:protoc:3.25.4:exe:${os.detected.classifier}<\/protocArtifact>\r\n        <pluginId>grpc-java<\/pluginId>\r\n        <pluginArtifact>io.grpc:protoc-gen-grpc-java:1.66.0:exe:${os.detected.classifier}<\/pluginArtifact>\r\n      <\/configuration>\r\n      <executions>\r\n        <execution>\r\n          <goals>\r\n            <goal>compile<\/goal>\r\n            <goal>compile-custom<\/goal>\r\n          <\/goals>\r\n        <\/execution>\r\n      <\/executions>\r\n    <\/plugin>\r\n  <\/plugins>\r\n<\/build><\/pre>\n
You can read more in the tutorial Generate Java code for service contract in gRPC using Protocol Buffers Maven Plugin<\/a> to understand how to use Protocol Buffers Maven Plugin to generate Java code for service contract!<\/p>\n
Run Maven Compile, you will see the following result:<\/p>\n
\"\"<\/p>\n
To implement HelloService with grpc-server-spring-boot-starter, you just need to add a new class that extends the HelloServiceGrpc.HelloServiceImplBase class and annotate this class with the annotation @GrpcService as follows:<\/p>\n
package com.huongdanjava.springboot.grpc;\r\n\r\nimport io.grpc.stub.StreamObserver;\r\nimport net.devh.boot.grpc.server.service.GrpcService;\r\n\r\n@GrpcService\r\npublic class HelloController extends HelloServiceGrpc.HelloServiceImplBase {\r\n\r\n  @Override\r\n  public void hello(HelloRequest request, StreamObserver<HelloResponse> responseObserver) {\r\n    String greeting = \"Hello \" + request.getName() + \" from Huong Dan Java\";\r\n\r\n    HelloResponse response = HelloResponse.newBuilder()\r\n        .setMessage(greeting)\r\n        .build();\r\n\r\n    responseObserver.onNext(response);\r\n    responseObserver.onCompleted();\r\n  }\r\n}\r\n<\/pre>\n
The implementation content of the hello() method is similar to the previous tutorial<\/a>!<\/p>\n
grpc-server-spring-boot-starter with Spring Boot’s auto-configuration mechanism will automatically start a gRPC server with default configurations, adding the implementation of HelloService to expose it to the outside.<\/p>\n
By default, grpc-server-spring-boot-starter will run the gRPC server at port 9090, you can change this default port by declaring the grpc.server.port property with the value you want! In this example, I will leave the default port.<\/p>\n
If I now run this example application and use Postman to request the hello<\/em> operation, I will see the following result:<\/p>\n
\"\"<\/p>\n
Very quick and simple, right?<\/p>\n\n\n
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There is currently no official starter supporting gRPC in Spring Boot, but you can also use the starters developed by the community in the GitHub repository https:\/\/github.com\/grpc-ecosystem\/grpc-spring. In this tutorial, I will guide you on how to build a gRPC server with Spring Boot using… Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":1680,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2409,582],"tags":[],"class_list":["post-23330","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grpc-en","category-spring-boot","clearfix"],"yoast_head":"\ngRPC server with Spring Boot using grpc-server-spring-boot-starter - Huong Dan Java<\/title>\n<meta name=\"description\" content=\"In this tutorial, I guide you all on how to build a gRPC server with Spring Boot using grpc-server-spring-boot-starter.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/huongdanjava.com\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"gRPC server with Spring Boot using grpc-server-spring-boot-starter - Huong Dan Java\" \/>\n<meta property=\"og:description\" content=\"In this tutorial, I guide you all on how to build a gRPC server with Spring Boot using grpc-server-spring-boot-starter.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/huongdanjava.com\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html\" \/>\n<meta property=\"og:site_name\" content=\"Huong Dan Java\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/nhkhanh2406\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/nhkhanh2406\" \/>\n<meta property=\"article:published_time\" content=\"2024-09-15T07:23:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-09T02:36:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/huongdanjava.com\/wp-content\/uploads\/2016\/10\/spring-boot.png\" \/>\n\t<meta property=\"og:image:width\" content=\"300\" \/>\n\t<meta property=\"og:image:height\" content=\"300\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Khanh Nguyen\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/KhanhNguyenJ\" \/>\n<meta name=\"twitter:site\" content=\"@KhanhNguyenJ\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Khanh Nguyen\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/huongdanjava.com\\\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/huongdanjava.com\\\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html\"},\"author\":{\"name\":\"Khanh Nguyen\",\"@id\":\"https:\\\/\\\/huongdanjava.com\\\/#\\\/schema\\\/person\\\/dc859d7f8cbea3b593e6738de9cbb82d\"},\"headline\":\"gRPC server with Spring Boot using grpc-server-spring-boot-starter\",\"datePublished\":\"2024-09-15T07:23:55+00:00\",\"dateModified\":\"2025-10-09T02:36:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/huongdanjava.com\\\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html\"},\"wordCount\":321,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/huongdanjava.com\\\/#\\\/schema\\\/person\\\/dc859d7f8cbea3b593e6738de9cbb82d\"},\"image\":{\"@id\":\"https:\\\/\\\/huongdanjava.com\\\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/huongdanjava.com\\\/wp-content\\\/uploads\\\/2016\\\/10\\\/spring-boot.png\",\"articleSection\":[\"gRPC\",\"Spring Boot\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/huongdanjava.com\\\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/huongdanjava.com\\\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html\",\"url\":\"https:\\\/\\\/huongdanjava.com\\\/grpc-server-with-spring-boot-using-grpc-server-spring-boot-starter.html\",\"name\":\"gRPC server with Spring Boot using grpc-server-spring-boot-starter - 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