BAEL-12 advanced http client

httpclient/pom.xml

@@ -1,4 +1,5 @@
-<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">
+<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>
     <groupId>com.baeldung</groupId>
     <artifactId>httpclient</artifactId>
@@ -113,6 +114,13 @@
             <version>${mockito.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.github.tomakehurst</groupId>
+            <artifactId>wiremock</artifactId>
+            <version>${wiremock.version}</version>
+            <scope>test</scope>
+        </dependency>
+
 
     </dependencies>
 
@@ -145,7 +153,7 @@
                     <excludes>
                         <exclude>**/*LiveTest.java</exclude>
                     </excludes>
-                </configuration>                
+                </configuration>
             </plugin>
 
         </plugins>
@@ -202,6 +210,7 @@
         <org.hamcrest.version>1.3</org.hamcrest.version>
         <junit.version>4.12</junit.version>
         <mockito.version>1.10.19</mockito.version>
+        <wiremock.version>2.5.1</wiremock.version>
 
         <httpcore.version>4.4.5</httpcore.version>
         <httpclient.version>4.5.2</httpclient.version> <!-- 4.3.6 --> <!-- 4.4-beta1 -->

httpclient/src/test/java/org/baeldung/httpclient/advancedconfig/HttpClientAdvancedConfiguration.java

@@ -0,0 +1,137 @@
+package org.baeldung.httpclient.advancedconfig;
+
+
+import com.github.tomakehurst.wiremock.junit.WireMockRule;
+import org.apache.http.HttpHeaders;
+import org.apache.http.HttpHost;
+import org.apache.http.HttpResponse;
+import org.apache.http.auth.AuthScope;
+import org.apache.http.auth.UsernamePasswordCredentials;
+import org.apache.http.client.CredentialsProvider;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.BasicCredentialsProvider;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
+import org.junit.Rule;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.*;
+import static org.junit.Assert.assertEquals;
+
+public class HttpClientAdvancedConfiguration {
+
+    @Rule
+    public WireMockRule serviceMock = new WireMockRule(8089);
+
+    @Rule
+    public WireMockRule proxyMock = new WireMockRule(8090);
+
+    @Test
+    public void givenClientWithCustomUserAgentHeader_whenExecuteRequest_shouldReturn200() throws IOException {
+        //given
+        serviceMock.stubFor(get(urlEqualTo("/detail"))
+                .withHeader("User-Agent", equalTo("BaeldungAgent/1.0"))
+                .willReturn(aResponse()
+                        .withStatus(200)));
+
+        String userAgent = "BaeldungAgent/1.0";
+        HttpClient httpClient = HttpClients.createDefault();
+        final HttpGet httpGet = new HttpGet("http://localhost:8089/detail");
+        httpGet.setHeader(HttpHeaders.USER_AGENT, userAgent);
+
+        //when
+        HttpResponse response = httpClient.execute(httpGet);
+
+        //then
+        assertEquals(response.getStatusLine().getStatusCode(), 200);
+    }
+
+    @Test
+    public void givenClientThatSendDataInBody_whenSendXmlInBody_shouldReturn200() throws IOException {
+        //given
+        serviceMock.stubFor(post(urlEqualTo("/person"))
+                .withHeader("Content-Type", equalTo("application/xml"))
+                .withRequestBody(equalTo("<xml><id>1</id></xml>"))
+                .willReturn(aResponse()
+                        .withStatus(200)));
+
+        HttpClient httpClient = HttpClients.createDefault();
+        HttpPost httpPost = new HttpPost("http://localhost:8089/person");
+        httpPost.setHeader("Content-Type", "application/xml");
+        StringEntity xmlEntity = new StringEntity("<xml><id>1</id></xml>");
+        httpPost.setEntity(xmlEntity);
+
+        //when
+        HttpResponse response = httpClient.execute(httpPost);
+
+        //then
+        assertEquals(response.getStatusLine().getStatusCode(), 200);
+
+    }
+
+    @Test
+    public void givenServerThatIsBehindProxy_whenClientIsConfiguredToSendRequestViaProxy_shouldReturn200() throws IOException {
+        //given
+        proxyMock.stubFor(get(urlMatching(".*"))
+                .willReturn(aResponse().proxiedFrom("http://localhost:8089/")));
+
+        serviceMock.stubFor(get(urlEqualTo("/private"))
+                .willReturn(aResponse().withStatus(200)));
+
+
+        HttpHost proxy = new HttpHost("localhost", 8090);
+        DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
+        HttpClient httpclient = HttpClients.custom()
+                .setRoutePlanner(routePlanner)
+                .build();
+
+        //when
+        final HttpGet httpGet = new HttpGet("http://localhost:8089/private");
+        HttpResponse response = httpclient.execute(httpGet);
+
+        //then
+        assertEquals(response.getStatusLine().getStatusCode(), 200);
+        proxyMock.verify(getRequestedFor(urlEqualTo("/private")));
+        serviceMock.verify(getRequestedFor(urlEqualTo("/private")));
+    }
+
+    @Test
+    public void givenServerThatIsBehindAuthorizationProxy_whenClientSendRequest_shouldAuthorizeProperly() throws IOException {
+        //given
+        proxyMock.stubFor(get(urlMatching(".*"))
+                .willReturn(aResponse().proxiedFrom("http://localhost:8089/")));
+
+        serviceMock.stubFor(get(urlEqualTo("/private/username_admin/secret_password"))
+                .willReturn(aResponse().withStatus(200)));
+
+
+        HttpHost proxy = new HttpHost("localhost", 8090);
+        DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
+
+        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
+        credentialsProvider.setCredentials(new AuthScope(proxy),
+                new UsernamePasswordCredentials("username_admin", "secret_password"));
+
+        HttpClient httpclient = HttpClients.custom()
+                .setRoutePlanner(routePlanner)
+                .setDefaultCredentialsProvider(credentialsProvider)
+                .build();
+
+
+        //when
+        final HttpGet httpGet = new HttpGet("http://localhost:8089/private/username_admin/secret_password");
+        HttpResponse response = httpclient.execute(httpGet);
+
+        //then
+        assertEquals(response.getStatusLine().getStatusCode(), 200);
+        proxyMock.verify(getRequestedFor(urlEqualTo("/private/username_admin/secret_password")));
+        serviceMock.verify(getRequestedFor(urlEqualTo("/private/username_admin/secret_password")));
+    }
+
+
+}