Spring-boot HttpInvoker 에서 json 사용하기

spring-boot-rest-http-invoker

기존의 HttpInvoker는 객체를 Serialize할 때 JavaSerializer을 사용합니다.

고로 JAVA 9 이전에서는 서로 다른 버전의 JVM이거나 사소한 객체의 버전이 다른 경우 정상적으로 동작하지 않습니다.

spring-boot-rest-http-invoker는 JavaSerializer 대신에 Jackson ObjectMapper를 사용하여 Restful API로 변환합니다.

RemoteInvocation 형식을 맞춘다면 PHP나 다른 언어에서도 동일하게 접근할 수 있습니다.

프로토콜 형식에 대해서는 아래를 참고해 주세요.

github : https://github.com/jc-lab/spring-boot-rest-http-invoker

bintray : https://bintray.com/jc-lab/spring.boot/spring-boot-rest-http-invoker

Maven

<dependency>

  <groupId>kr.jclab.spring</groupId>

  <artifactId>spring-boot-rest-http-invoker</artifactId>

  <version>(bintray에서 최신버전 확인)</version>

  <type>pom</type>

</dependency>

Gradle

implementation 'kr.jclab.spring:spring-boot-rest-http-invoker:(bintray에서 최신버전 확인)'

예제 소스

import com.fasterxml.jackson.databind.ObjectMapper;

import com.zeronsoftn.demo.demo1rpc.controller.TestContoller;

import kr.jclab.spring.resthttpinvoker.RestHttpInvokerProxyFactoryBean;

import kr.jclab.spring.resthttpinvoker.RestHttpInvokerServiceExporter;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean;

import org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter;



@Configuration

public class RPCConfig {

    // Invoker 서버에서

    @Bean("/api/test")

    HttpInvokerServiceExporter apiExporter(TestService testService) {

        ObjectMapper objectMapper = new ObjectMapper();

        objectMapper.registerSubtypes(TestContoller.Test.class);

        RestHttpInvokerServiceExporter exporter = new RestHttpInvokerServiceExporter();

        exporter.setObjectMapper(objectMapper);

        exporter.setService(testService);

        exporter.setServiceInterface(TestService.class);

        return exporter;

    }



    // Invoker Client에서

    @Bean

    HttpInvokerProxyFactoryBean testService() {

        ObjectMapper objectMapper = new ObjectMapper();

        objectMapper.registerSubtypes(TestContoller.Test.class);

        RestHttpInvokerProxyFactoryBean factoryBean = new RestHttpInvokerProxyFactoryBean();

        factoryBean.setObjectMapper(objectMapper);

        factoryBean.setServiceUrl("http://127.0.0.1:8080/api/test");

        factoryBean.setServiceInterface(TestService.class);

        return factoryBean;

    }



}

예제 Interface

public interface TestService {

    void test_1();

    void test_2(int a);

    void test_3(String b);

    void test_4(Map<String, String> c);

    int test_5(int a, int b);

}

---

void test1() 실행시

POST /api/test HTTP/1.1

Content-Type: application/json

Accept-Language: ko-KR

Accept-Encoding: gzip

User-Agent: Java/1.8.0_191

Host: 127.0.0.1:9999

Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2

Connection: keep-alive

Content-Length: 76



{"methodName":"test_1","parameterTypes":[],"arguments":[],"attributes":null}

HTTP/1.1 200 

Content-Type: application/json

Content-Length: 31

Date: Thu, 28 Feb 2019 01:27:24 GMT



{"value":null,"exception":null}

---

void test_2(10) 실행시

POST /api/test HTTP/1.1

Content-Type: application/json

Accept-Language: ko-KR

Accept-Encoding: gzip

User-Agent: Java/1.8.0_191

Host: 127.0.0.1:9999

Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2

Connection: keep-alive

Content-Length: 83



{"methodName":"test_2","parameterTypes":["int"],"arguments":[10],"attributes":null}

HTTP/1.1 200 

Content-Type: application/json

Content-Length: 31

Date: Thu, 28 Feb 2019 01:27:24 GMT



{"value":null,"exception":null}

---

void test_3("20") 실행시

POST /api/test HTTP/1.1

Content-Type: application/json

Accept-Language: ko-KR

Accept-Encoding: gzip

User-Agent: Java/1.8.0_191

Host: 127.0.0.1:9999

Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2

Connection: keep-alive

Content-Length: 98



{"methodName":"test_3","parameterTypes":["java.lang.String"],"arguments":["20"],"attributes":null}

HTTP/1.1 200 

Content-Type: application/json

Content-Length: 31

Date: Thu, 28 Feb 2019 01:27:24 GMT



{"value":null,"exception":null}

---

void test_4(Map<String, Object> map) 실행시

public static class Test {

        public int a;

        public int b;



        public Test() {}



        public Test(int a, int b) {

            this.a = a;

            this.b = b;

        }

    }



    @RequestMapping(path = "/test-1")

    @ResponseBody

    public String test1() {

        HashMap<String, Object> test = new HashMap<>();

        test.put("a", "aaaa");

        test.put("b", 123123);

        test.put("c", 3.14);

        test.put("d", new Test(10, 20));

        apiProxy.test_4(test);

        return "OK : " + apiProxy.test_5(22, 55);

    }

POST /api/test HTTP/1.1

Content-Type: application/json

Accept-Language: ko-KR

Accept-Encoding: gzip

User-Agent: Java/1.8.0_191

Host: 127.0.0.1:9999

Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2

Connection: keep-alive

Content-Length: 143



{"methodName":"test_4","parameterTypes":["java.util.Map"],"arguments":[{"a":"aaaa","b":123123,"c":3.14,"d":{"a":10,"b":20}}],"attributes":null}

HTTP/1.1 200 

Content-Type: application/json

Content-Length: 31

Date: Thu, 28 Feb 2019 01:47:29 GMT



{"value":null,"exception":null}

---

int test_5(22, 55) 실행시

POST /api/test HTTP/1.1

Content-Type: application/json

Accept-Language: ko-KR

Accept-Encoding: gzip

User-Agent: Java/1.8.0_191

Host: 127.0.0.1:9999

Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2

Connection: keep-alive

Content-Length: 92



{"methodName":"test_5","parameterTypes":["int","int"],"arguments":[22,55],"attributes":null}

HTTP/1.1 200 

Content-Type: application/json

Content-Length: 29

Date: Thu, 28 Feb 2019 01:47:29 GMT



{"value":77,"exception":null}