diff --git a/Exception/AbstractException.php b/Exception/AbstractException.php
new file mode 100644
index 0000000..a2d93a3
--- /dev/null
+++ b/Exception/AbstractException.php
@@ -0,0 +1,25 @@
+<?php declare(strict_types=1);
+
+namespace RichCongress\WebTestBundle\Exception;
+
+abstract class AbstractException extends \LogicException
+{
+    /** @var string */
+    protected static $error;
+
+    public function __construct()
+    {
+        $message = static::$error;
+        $message .= "\n";
+        $message .= 'Check the documentation: ';
+        $message .= 'https://github.com/richcongress/web-test-bundle/blob/master/Docs/Exceptions.md#';
+        $message .= static::class;
+
+        parent::__construct($message);
+    }
+
+    public static function throw(): void
+    {
+        throw new static();
+    }
+}
diff --git a/Exception/CsrfTokenManagerMissingException.php b/Exception/CsrfTokenManagerMissingException.php
index ff1476f..7dd60c4 100644
--- a/Exception/CsrfTokenManagerMissingException.php
+++ b/Exception/CsrfTokenManagerMissingException.php
@@ -9,22 +9,8 @@
  * @author    Nicolas Guilloux <nguilloux@richcongress.com>
  * @copyright 2014 - 2020 RichCongress (https://www.richcongress.com)
  */
-final class CsrfTokenManagerMissingException extends \Exception
+final class CsrfTokenManagerMissingException extends AbstractException
 {
     /** @var string */
     protected static $error = 'The Security\'s CSRF Token Manager is missing from the container.';
-
-    /** @var string  */
-    protected static $documentation = 'https://github.com/richcongress/web-test-bundle/blob/master/Docs/Exceptions.md#CsrfTokenManagerMissingException';
-
-    /**
-     * CsrfTokenManagerMissingException constructor.
-     */
-    public function __construct()
-    {
-        $message = self::$error;
-        $message .= "\nCheck the documentation: " . self::$documentation;
-
-        parent::__construct($message);
-    }
 }
diff --git a/Exception/EntityManagerNotFoundException.php b/Exception/EntityManagerNotFoundException.php
index 15cb527..7bc9ad3 100644
--- a/Exception/EntityManagerNotFoundException.php
+++ b/Exception/EntityManagerNotFoundException.php
@@ -8,25 +8,9 @@
  * @package    RichCongress\WebTestBundle\Exception
  * @author     Nicolas Guilloux <nguilloux@richcongress.com>
  * @copyright  2014 - 2020 RichCongress (https://www.richcongress.com)
- *
- * @covers \RichCongress\WebTestBundle\Exception\EntityManagerNotFoundException
  */
-final class EntityManagerNotFoundException extends \Exception
+final class EntityManagerNotFoundException extends AbstractException
 {
     /** @var string  */
     protected static $error = 'The Entity manager cannot be found. Check your Doctrine documentation.';
-
-    /** @var string  */
-    protected static $documentation = 'https://github.com/richcongress/web-test-bundle/blob/master/Docs/Exceptions.md#EntityManagerNotFoundException';
-
-    /**
-     * EntityManagerNotFoundException constructor.
-     */
-    public function __construct()
-    {
-        $message = self::$error;
-        $message .= "\nCheck the documentation: " . self::$documentation;
-
-        parent::__construct($message);
-    }
 }
diff --git a/Exception/JsonRequestWithContentException.php b/Exception/JsonRequestWithContentException.php
new file mode 100644
index 0000000..19deebd
--- /dev/null
+++ b/Exception/JsonRequestWithContentException.php
@@ -0,0 +1,9 @@
+<?php declare(strict_types=1);
+
+namespace RichCongress\WebTestBundle\Exception;
+
+class JsonRequestWithContentException extends AbstractException
+{
+    /** @var string  */
+    protected static $error = 'You cannot make a json request with both parameters and content set.';
+}
diff --git a/Exception/KernelNotInitializedException.php b/Exception/KernelNotInitializedException.php
index e340468..1c798ec 100644
--- a/Exception/KernelNotInitializedException.php
+++ b/Exception/KernelNotInitializedException.php
@@ -9,22 +9,8 @@
  * @author     Nicolas Guilloux <nguilloux@richcongress.com>
  * @copyright  2014 - 2020 RichCongress (https://www.richcongress.com)
  */
-final class KernelNotInitializedException extends \Exception
+final class KernelNotInitializedException extends AbstractException
 {
     /** @var string  */
     protected static $error = 'The kernel was not initialized. Did you add the annotation `@TestConfig("kernel")` to your method or class?';
-
-    /** @var string  */
-    protected static $documentation = 'https://github.com/richcongress/web-test-bundle/blob/master/Docs/Exceptions.md#KernelNotInitializedException';
-
-    /**
-     * KernelNotInitializedException constructor.
-     */
-    public function __construct()
-    {
-        $message = self::$error;
-        $message .= "\nCheck the documentation: " . self::$documentation;
-
-        parent::__construct($message);
-    }
 }
diff --git a/Tests/Exceptions/CsrfTokenManagerMissingExceptionTest.php b/Tests/Exceptions/CsrfTokenManagerMissingExceptionTest.php
index 3343e00..f025a31 100644
--- a/Tests/Exceptions/CsrfTokenManagerMissingExceptionTest.php
+++ b/Tests/Exceptions/CsrfTokenManagerMissingExceptionTest.php
@@ -13,6 +13,7 @@
  * @copyright  2014 - 2020 RichCongress (https://www.richcongress.com)
  *
  * @covers \RichCongress\WebTestBundle\Exception\CsrfTokenManagerMissingException
+ * @covers \RichCongress\WebTestBundle\Exception\AbstractException
  */
 final class CsrfTokenManagerMissingExceptionTest extends TestCase
 {
diff --git a/Tests/Exceptions/EntityManagerNotFoundExceptionTest.php b/Tests/Exceptions/EntityManagerNotFoundExceptionTest.php
index 5478de1..4351fea 100644
--- a/Tests/Exceptions/EntityManagerNotFoundExceptionTest.php
+++ b/Tests/Exceptions/EntityManagerNotFoundExceptionTest.php
@@ -13,6 +13,7 @@
  * @copyright  2014 - 2020 RichCongress (https://www.richcongress.com)
  *
  * @covers \RichCongress\WebTestBundle\Exception\EntityManagerNotFoundException
+ * @covers \RichCongress\WebTestBundle\Exception\AbstractException
  */
 final class EntityManagerNotFoundExceptionTest extends TestCase
 {
diff --git a/Tests/Exceptions/JsonRequestWithContentExceptionTest.php b/Tests/Exceptions/JsonRequestWithContentExceptionTest.php
new file mode 100644
index 0000000..a386bcd
--- /dev/null
+++ b/Tests/Exceptions/JsonRequestWithContentExceptionTest.php
@@ -0,0 +1,23 @@
+<?php declare(strict_types=1);
+
+namespace RichCongress\WebTestBundle\Tests\Exceptions;
+
+use RichCongress\WebTestBundle\Exception\JsonRequestWithContentException;
+use RichCongress\WebTestBundle\TestCase\TestCase;
+
+/**
+ * @covers \RichCongress\WebTestBundle\Exception\JsonRequestWithContentException
+ * @covers \RichCongress\WebTestBundle\Exception\AbstractException
+ */
+final class JsonRequestWithContentExceptionTest extends TestCase
+{
+    public function testException(): void
+    {
+        $exception = new JsonRequestWithContentException();
+
+        self::assertStringContainsString(
+            'You cannot make a json request with both parameters and content set.',
+            $exception->getMessage()
+        );
+    }
+}
diff --git a/Tests/Exceptions/KernelNotInitializedExceptionTest.php b/Tests/Exceptions/KernelNotInitializedExceptionTest.php
index 3048ace..51c511f 100644
--- a/Tests/Exceptions/KernelNotInitializedExceptionTest.php
+++ b/Tests/Exceptions/KernelNotInitializedExceptionTest.php
@@ -13,6 +13,7 @@
  * @copyright  2014 - 2020 RichCongress (https://www.richcongress.com)
  *
  * @covers \RichCongress\WebTestBundle\Exception\KernelNotInitializedException
+ * @covers \RichCongress\WebTestBundle\Exception\AbstractException
  */
 final class KernelNotInitializedExceptionTest extends TestCase
 {
diff --git a/Tests/WebTest/ClientTest.php b/Tests/WebTest/ClientTest.php
index 2e18b23..0f74dd0 100644
--- a/Tests/WebTest/ClientTest.php
+++ b/Tests/WebTest/ClientTest.php
@@ -2,6 +2,7 @@
 
 namespace RichCongress\WebTestBundle\Tests\WebTest;
 
+use RichCongress\WebTestBundle\Exception\JsonRequestWithContentException;
 use RichCongress\WebTestBundle\TestCase\ControllerTestCase;
 use RichCongress\WebTestBundle\WebTest\Client;
 use RichCongress\WebTestBundle\WebTest\Response;
@@ -71,4 +72,20 @@ public function testExtractBrowserWithNoBrowser(): void
 
         Client::extractBrowser(null);
     }
+
+    public function testJsonRequestWithContent(): void
+    {
+        $client = $this->getClient();
+
+        $this->expectException(JsonRequestWithContentException::class);
+        $client->request('POST', '/test', ['test' => true], [], [], 'test');
+    }
+
+    public function testnotJsonRequestWithContent(): void
+    {
+        $client = $this->getClient();
+        $response = $client->request('POST', '/test', ['test' => true], [], [], 'test', true, false);
+
+        self::assertStatusCode(Response::HTTP_NOT_FOUND, $response);
+    }
 }
diff --git a/WebTest/Client.php b/WebTest/Client.php
index 4695035..f32ea48 100644
--- a/WebTest/Client.php
+++ b/WebTest/Client.php
@@ -3,6 +3,7 @@
 namespace RichCongress\WebTestBundle\WebTest;
 
 use Psr\Container\ContainerInterface;
+use RichCongress\WebTestBundle\Exception\JsonRequestWithContentException;
 use Symfony\Bundle\FrameworkBundle\KernelBrowser;
 use Symfony\Component\BrowserKit\Request;
 use Symfony\Component\DomCrawler\Crawler;
@@ -36,8 +37,20 @@ public function request(
         array $files = [],
         array $server = [],
         string $content = null,
-        bool $changeHistory = true
+        bool $changeHistory = true,
+        bool $isJson = true
     ): Response {
+        if ($isJson) {
+            if ($content !== null) {
+                JsonRequestWithContentException::throw();
+            }
+
+            $content = json_encode($parameters, JSON_THROW_ON_ERROR);
+            $parameters = [];
+            $server['CONTENT_TYPE'] = 'application/json';
+            $server['HTTP_ACCEPT'] = 'application/json';
+        }
+
         $this->browser->request(
             $method,
             $uri,
@@ -58,7 +71,8 @@ public function get(
         array $files = [],
         array $server = [],
         string $content = null,
-        bool $changeHistory = true
+        bool $changeHistory = true,
+        bool $isJson = true
     ): Response {
         return $this->request(
             'GET',
@@ -67,7 +81,8 @@ public function get(
             $files,
             $server,
             $content,
-            $changeHistory
+            $changeHistory,
+            $isJson
         );
     }
 
@@ -78,7 +93,8 @@ public function post(
         array $files = [],
         array $server = [],
         string $content = null,
-        bool $changeHistory = true
+        bool $changeHistory = true,
+        bool $isJson = true
     ): Response {
         return $this->request(
             'POST',
@@ -87,7 +103,8 @@ public function post(
             $files,
             $server,
             $content,
-            $changeHistory
+            $changeHistory,
+            $isJson
         );
     }
 
@@ -98,7 +115,8 @@ public function put(
         array $files = [],
         array $server = [],
         string $content = null,
-        bool $changeHistory = true
+        bool $changeHistory = true,
+        bool $isJson = true
     ): Response {
         return $this->request(
             'PUT',
@@ -107,7 +125,8 @@ public function put(
             $files,
             $server,
             $content,
-            $changeHistory
+            $changeHistory,
+            $isJson
         );
     }
 
@@ -118,7 +137,8 @@ public function patch(
         array $files = [],
         array $server = [],
         string $content = null,
-        bool $changeHistory = true
+        bool $changeHistory = true,
+        bool $isJson = true
     ): Response {
         return $this->request(
             'PATCH',
@@ -127,7 +147,8 @@ public function patch(
             $files,
             $server,
             $content,
-            $changeHistory
+            $changeHistory,
+            $isJson
         );
     }
 
@@ -138,7 +159,8 @@ public function delete(
         array $files = [],
         array $server = [],
         string $content = null,
-        bool $changeHistory = true
+        bool $changeHistory = true,
+        bool $isJson = true
     ): Response {
         return $this->request(
             'DELETE',
@@ -147,7 +169,8 @@ public function delete(
             $files,
             $server,
             $content,
-            $changeHistory
+            $changeHistory,
+            $isJson
         );
     }