BAEL-5294 added form-url-encoded data code (#13545)

feign/src/main/java/com/baeldung/core/client/FormClient.java

@@ -0,0 +1,37 @@
+package com.baeldung.core.client;
+
+import java.util.Map;
+
+import org.springframework.beans.factory.ObjectFactory;
+import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.cloud.openfeign.support.SpringEncoder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+
+import com.baeldung.core.defaulterrorhandling.model.FormData;
+
+import feign.codec.Encoder;
+import feign.form.spring.SpringFormEncoder;
+
+@FeignClient(name = "form-client", url = "http://localhost:8085/api", configuration = FormFeignEncoderConfig.class)
+public interface FormClient {
+
+    @PostMapping(value = "/form", consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE)
+    void postFormData(@RequestBody FormData data);
+
+    @PostMapping(value = "/form/map", consumes = MediaType.APPLICATION_FORM_URLENCODED_VALUE)
+    void postFormMapData(Map<String, ?> data);
+
+}
+
+class FormFeignEncoderConfig {
+
+    @Bean
+    public Encoder encoder(ObjectFactory<HttpMessageConverters> converters) {
+        return new SpringFormEncoder(new SpringEncoder(converters));
+    }
+
+}

feign/src/main/java/com/baeldung/core/defaulterrorhandling/model/FormData.java

@@ -0,0 +1,12 @@
+package com.baeldung.core.defaulterrorhandling.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+@Data
+@AllArgsConstructor
+public class FormData {
+
+    int id;
+    String name;
+}

feign/src/test/java/com/baeldung/core/client/FormClientUnitTest.java

@@ -0,0 +1,78 @@
+package com.baeldung.core.client;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
+import static com.github.tomakehurst.wiremock.client.WireMock.configureFor;
+import static com.github.tomakehurst.wiremock.client.WireMock.equalTo;
+import static com.github.tomakehurst.wiremock.client.WireMock.postRequestedFor;
+import static com.github.tomakehurst.wiremock.client.WireMock.stubFor;
+import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
+import static com.github.tomakehurst.wiremock.client.WireMock.urlPathEqualTo;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.HttpStatus;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+import com.baeldung.core.defaulterrorhandling.model.FormData;
+import com.github.tomakehurst.wiremock.WireMockServer;
+import com.github.tomakehurst.wiremock.client.WireMock;
+
+import lombok.extern.slf4j.Slf4j;
+
+@ExtendWith(SpringExtension.class)
+@SpringBootTest
+@Slf4j
+class FormClientUnitTest {
+
+    private static WireMockServer wireMockServer;
+
+    @Autowired
+    FormClient formClient;
+
+    @BeforeAll
+    public static void startWireMockServer() {
+        wireMockServer = new WireMockServer(8085);
+        configureFor("localhost", 8085);
+        wireMockServer.start();
+
+    }
+
+    @AfterAll
+    public static void stopWireMockServer() {
+        wireMockServer.stop();
+    }
+
+    @Test
+    public void givenFormData_whenPostFormDataCalled_thenReturnSuccess() {
+        FormData formData = new FormData(1, "baeldung");
+        stubFor(WireMock.post(urlEqualTo("/api/form"))
+          .willReturn(aResponse().withStatus(HttpStatus.OK.value())));
+
+        formClient.postFormData(formData);
+        wireMockServer.verify(postRequestedFor(urlPathEqualTo("/api/form"))
+          .withHeader("Content-Type", equalTo("application/x-www-form-urlencoded; charset=UTF-8"))
+          .withRequestBody(equalTo("name=baeldung&id=1")));
+    }
+
+    @Test
+    public void givenFormMap_whenPostFormMapDataCalled_thenReturnSuccess() {
+        Map<String, String> mapData = new HashMap<>();
+        mapData.put("name", "baeldung");
+        mapData.put("id", "1");
+        stubFor(WireMock.post(urlEqualTo("/api/form/map"))
+          .willReturn(aResponse().withStatus(HttpStatus.OK.value())));
+
+        formClient.postFormMapData(mapData);
+        wireMockServer.verify(postRequestedFor(urlPathEqualTo("/api/form/map"))
+          .withHeader("Content-Type", equalTo("application/x-www-form-urlencoded; charset=UTF-8"))
+          .withRequestBody(equalTo("name=baeldung&id=1")));
+    }
+
+}