From 3ddf5fa6a4d200f3914f8d1f6aa5b4902fec2cee Mon Sep 17 00:00:00 2001
From: Michael Olayemi <michaelolayemi28@gmail.com>
Date: Sat, 3 Jun 2023 03:42:18 +0000
Subject: [PATCH] How to Display a Full HTTP Response Body with Gatling
 (#14148)

---
 testing-modules/gatling-java/pom.xml          | 11 +++--
 .../http/FetchSinglePostSimulation.java       | 23 ++++++++++
 .../http/FetchSinglePostSimulationLog.java    | 42 +++++++++++++++++++
 3 files changed, 73 insertions(+), 3 deletions(-)
 create mode 100644 testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulation.java
 create mode 100644 testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulationLog.java

diff --git a/testing-modules/gatling-java/pom.xml b/testing-modules/gatling-java/pom.xml
index 54e18b3ac1..abe033f298 100644
--- a/testing-modules/gatling-java/pom.xml
+++ b/testing-modules/gatling-java/pom.xml
@@ -60,7 +60,12 @@
                 <artifactId>gatling-maven-plugin</artifactId>
                 <version>${gatling-maven-plugin.version}</version>
                 <configuration>
-                    <simulationClass>org.baeldung.EmployeeRegistrationSimulation</simulationClass>
+                    <includes>
+                        <include>org.baeldung.EmployeeRegistrationSimulation</include>
+                        <include>org.baeldung.gatling.http.FetchSinglePostSimulation</include>
+                        <include>org.baeldung.gatling.http.FetchSinglePostSimulationLog</include>
+                    </includes>
+                    <runMultipleSimulations>true</runMultipleSimulations>
                 </configuration>
             </plugin>
         </plugins>
@@ -70,8 +75,8 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <encoding>UTF-8</encoding>
-        <gatling.version>3.9.0</gatling.version>
-        <gatling-maven-plugin.version>4.2.9</gatling-maven-plugin.version>
+        <gatling.version>3.9.5</gatling.version>
+        <gatling-maven-plugin.version>4.3.0</gatling-maven-plugin.version>
         <faker.version>1.0.2</faker.version>
         <spring.version>2.7.5</spring.version>
     </properties>
diff --git a/testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulation.java b/testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulation.java
new file mode 100644
index 0000000000..16cf25faef
--- /dev/null
+++ b/testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulation.java
@@ -0,0 +1,23 @@
+package org.baeldung.gatling.http;
+
+import io.gatling.javaapi.core.*;
+import io.gatling.javaapi.http.*;
+import static io.gatling.javaapi.http.HttpDsl.*;
+import static io.gatling.javaapi.core.CoreDsl.*;
+
+public class FetchSinglePostSimulation extends Simulation {
+
+    public FetchSinglePostSimulation() {
+        HttpProtocolBuilder httpProtocolBuilder = http.baseUrl("https://jsonplaceholder.typicode.com");
+
+        ScenarioBuilder scn = scenario("Display Full HTTP Response Body").exec(http("GET Request").get("/posts/1")
+          .check(status().is(200))
+          .check(bodyString().saveAs("responseBody")))
+          .exec(session -> {
+              System.out.println("Response Body:");
+              System.out.println(session.getString("responseBody"));
+              return session;
+            });
+        setUp(scn.injectOpen(atOnceUsers(1))).protocols(httpProtocolBuilder);
+    }
+}
diff --git a/testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulationLog.java b/testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulationLog.java
new file mode 100644
index 0000000000..9ad4d6edf6
--- /dev/null
+++ b/testing-modules/gatling-java/src/test/java/org/baeldung/gatling/http/FetchSinglePostSimulationLog.java
@@ -0,0 +1,42 @@
+package org.baeldung.gatling.http;
+
+import io.gatling.javaapi.core.ScenarioBuilder;
+import io.gatling.javaapi.core.Simulation;
+import io.gatling.javaapi.http.HttpProtocolBuilder;
+
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+
+import static io.gatling.javaapi.core.CoreDsl.*;
+import static io.gatling.javaapi.http.HttpDsl.http;
+import static io.gatling.javaapi.http.HttpDsl.status;
+
+public class FetchSinglePostSimulationLog extends Simulation {
+
+    public FetchSinglePostSimulationLog() {
+        HttpProtocolBuilder httpProtocolBuilder = http.baseUrl("https://jsonplaceholder.typicode.com");
+
+        ScenarioBuilder scn = scenario("Display Full HTTP Response Body").exec(http("GET Request").get("/posts/1")
+          .check(status().is(200))
+          .check(bodyString().saveAs("responseBody")))
+          .exec(session -> {
+
+              String responseBody = session.getString("responseBody");
+              try {
+                  writeFile("response_body.log", responseBody);
+              } catch (IOException e) {
+                  System.err.println("error writing file");
+              }
+              return session;
+          });
+        setUp(scn.injectOpen(atOnceUsers(1))).protocols(httpProtocolBuilder);
+    }
+
+    private void writeFile(String fileName, String content) throws IOException {
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(fileName, true))) {
+            writer.write(content);
+            writer.newLine();
+        }
+    }
+}