JAVA-627: Moved 2 articles to libraries-http-2

libraries-http-2/README.md

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+## HTTP
+
+This module contains articles about HTTP libraries.
+
+### Relevant Articles: 
+
+- [Jetty ReactiveStreams HTTP Client](https://www.baeldung.com/jetty-reactivestreams-http-client)
+- [Decode an OkHttp JSON Response](https://www.baeldung.com/okhttp-json-response)
+- More articles [[<-- prev]](/libraries-http)
+

libraries-http-2/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>libraries-http-2</artifactId>
+    <name>libraries-http-2</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+         <!-- Dependencies for response decoder with okhttp -->
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>${okhttp.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>${gson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>mockwebserver</artifactId>
+            <version>${mockwebserver.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <okhttp.version>3.14.2</okhttp.version>
+        <gson.version>2.8.5</gson.version>
+        <mockwebserver.version>3.14.2</mockwebserver.version>
+        <jackson.version>2.9.8</jackson.version>
+    </properties>
+
+</project>

libraries-http-2/src/test/java/com/baeldung/okhttp/ResponseDecoderUnitTest.java

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+package com.baeldung.okhttp;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.gson.Gson;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.ResponseBody;
+import okhttp3.mockwebserver.MockResponse;
+import okhttp3.mockwebserver.MockWebServer;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+import java.io.InputStreamReader;
+
+public class ResponseDecoderUnitTest {
+
+    @Rule public ExpectedException exceptionRule = ExpectedException.none();
+
+    @Rule public MockWebServer server = new MockWebServer();
+
+    SimpleEntity sampleResponse;
+
+    MockResponse mockResponse;
+
+    OkHttpClient client;
+
+    @Before
+    public void setUp() {
+        sampleResponse = new SimpleEntity("Baeldung");
+        client = new OkHttpClient.Builder().build();
+        mockResponse = new MockResponse()
+          .setResponseCode(200)
+          .setHeader("Content-Type", "application/json")
+          .setBody(new Gson().toJson(sampleResponse));
+    }
+
+    @Test
+    public void givenJacksonDecoder_whenGetStringOfResponse_thenExpectSimpleEntity() throws Exception {
+        server.enqueue(mockResponse);
+        Request request = new Request.Builder()
+          .url(server.url(""))
+          .build();
+        ResponseBody responseBody = client
+          .newCall(request)
+          .execute()
+          .body();
+
+        Assert.assertNotNull(responseBody);
+        Assert.assertNotEquals(0, responseBody.contentLength());
+
+        ObjectMapper objectMapper = new ObjectMapper();
+        SimpleEntity entity = objectMapper.readValue(responseBody.string(), SimpleEntity.class);
+
+        Assert.assertNotNull(entity);
+        Assert.assertEquals(sampleResponse.getName(), entity.getName());
+    }
+
+    @Test
+    public void givenGsonDecoder_whenGetByteStreamOfResponse_thenExpectSimpleEntity() throws Exception {
+        server.enqueue(mockResponse);
+        Request request = new Request.Builder()
+          .url(server.url(""))
+          .build();
+        ResponseBody responseBody = client
+          .newCall(request)
+          .execute()
+          .body();
+
+        Assert.assertNotNull(responseBody);
+        Assert.assertNotEquals(0, responseBody.contentLength());
+
+        Gson gson = new Gson();
+        SimpleEntity entity = gson.fromJson(new InputStreamReader(responseBody.byteStream()), SimpleEntity.class);
+
+        Assert.assertNotNull(entity);
+        Assert.assertEquals(sampleResponse.getName(), entity.getName());
+    }
+
+    @Test
+    public void givenGsonDecoder_whenGetStringOfResponse_thenExpectSimpleEntity() throws Exception {
+        server.enqueue(mockResponse);
+        Request request = new Request.Builder()
+          .url(server.url(""))
+          .build();
+        ResponseBody responseBody = client
+          .newCall(request)
+          .execute()
+          .body();
+
+        Assert.assertNotNull(responseBody);
+
+        Gson gson = new Gson();
+        SimpleEntity entity = gson.fromJson(responseBody.string(), SimpleEntity.class);
+
+        Assert.assertNotNull(entity);
+        Assert.assertEquals(sampleResponse.getName(), entity.getName());
+    }
+
+}

libraries-http-2/src/test/java/com/baeldung/okhttp/SimpleEntity.java

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+package com.baeldung.okhttp;
+
+public class SimpleEntity {
+    protected String name;
+
+    public SimpleEntity(String name) {
+        this.name = name;
+    }
+
+    //no-arg constructor, getters and setters here
+    
+    public SimpleEntity() {
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}