diff --git a/geoapi/api/Api.php b/geoapi/api/Api.php
index fa8abc2..958dddb 100644
--- a/geoapi/api/Api.php
+++ b/geoapi/api/Api.php
@@ -4,7 +4,10 @@ namespace api;
 
 include_once "../../global.inc.php";
 include_once PATH_DATABASE . "/SQLManager.php";
+include_once PATH_UTILITTY . "/XmlManager.php";
+include_once PATH_UTILITTY . "/JsonManager.php";
 require_once PATH_3PARTY . "/Slim/Slim.php";
+
 \Slim\Slim::registerAutoloader();
 
 /**
@@ -20,15 +23,29 @@ abstract class Api extends \Slim\Slim {
      */
     protected $sqlManager;
 
+    /**
+     * Variable for the serialazarion manager of the api
+     * @var <T>:SqlManager 
+     */
+    protected $serialManager;
+    protected static $contentypeXML = "application/xml;charset=utf-8";
+    protected static $contentypeJson = "application/json;charset=utf-8";
+
     /**
      * Default-Constructor
      */
-    public function __construct() {
+    public function __construct($headers = array()) {
         $this->connect();
         parent::__construct();
 
-        // set content type td xml
-        $this->contentType("Content-type: application/xml;charset=utf-8");
+// set content type td xml
+        if ($headers && preg_match('/json/', $headers["Accept"])) {
+            $this->serialManager = new \utiliy\JsonManager();
+            $this->contentType(self::$contentypeJson);
+        } else {
+            $this->serialManager = new \utiliy\XmlManager();
+            $this->contentType(self::$contentypeXML);
+        }
     }
 
     /**
@@ -36,10 +53,10 @@ abstract class Api extends \Slim\Slim {
      */
     public function __destruct() {
 
-        // destroy the sqlManager
+// destroy the sqlManager
         $this->sqlManager->closeConnection();
         unset($this->sqlManager);
-        $this->sqlManager = null;
+        unset($this->serialManager);
     }
 
     /**
diff --git a/geoapi/api/PisApi.php b/geoapi/api/PisApi.php
index 7fa43e8..eacc8f3 100644
--- a/geoapi/api/PisApi.php
+++ b/geoapi/api/PisApi.php
@@ -4,7 +4,6 @@ namespace api;
 
 include_once "../../global.inc.php";
 include_once PATH_DATABASE . "/PisSqlManager.php";
-include_once PATH_UTILITTY . "/XmlManager.php";
 include_once PATH_UTILITTY . "/ArrayManager.php";
 require_once PATH_API . "/Api.php";
 
@@ -30,9 +29,9 @@ class PisApi extends Api {
     /**
      * Default-Constructor
      */
-    public function __construct() {
+    public function __construct($headers = array()) {
         $this->sqlManager = new \database\PisSqlManager();
-        parent::__construct();
+        parent::__construct($headers);
     }
 
     /**
@@ -51,7 +50,8 @@ class PisApi extends Api {
         $pidList =  \utiliy\ArrayManager::removeEmptyItmes($queryArgs);
         if (count($pidList) < $this->maxPid) {
             $result = $this->sqlManager->sendPisQuery($pidList);
-            return \utiliy\XmlManager::arrayToPisXml($result);
+           
+            return $this->serialManager->arrayToPis($result);
         }
         return NULL;
     }
diff --git a/geoapi/api/PssApi.php b/geoapi/api/PssApi.php
index f35dcd8..c39ff21 100644
--- a/geoapi/api/PssApi.php
+++ b/geoapi/api/PssApi.php
@@ -30,9 +30,9 @@ class PssApi extends Api {
     /**
      * Default-Constructor
      */
-    public function __construct() {
+    public function __construct($headers = array()) {
         $this->sqlManager = new \database\PssSqlManager();
-        parent::__construct();
+        parent::__construct($headers);
     }
 
     /**
@@ -52,7 +52,7 @@ class PssApi extends Api {
 
         if (count($pidList) < $this->maxPid) {
             $result = $this->sqlManager->sendPssQuery($pidList);
-            return \utiliy\XmlManager::arrayToPssXml($result);
+            return $this->serialManager->arrayTopis($result);
         }
         return NULL;
     }
diff --git a/geoapi/api/SpsApi.php b/geoapi/api/SpsApi.php
index 65c53ff..c25b7a1 100644
--- a/geoapi/api/SpsApi.php
+++ b/geoapi/api/SpsApi.php
@@ -4,7 +4,6 @@ namespace api;
 
 include_once "../../global.inc.php";
 include_once PATH_DATABASE . "/SpsSqlManager.php";
-include_once PATH_UTILITTY . "/XmlManager.php";
 require_once PATH_API . "/Api.php";
 
 /**
@@ -113,9 +112,9 @@ class SpsApi extends Api {
     /**
      * Default-Constructor
      */
-    public function __construct() {
+    public function __construct($headers = array()) {
         $this->sqlManager = new \database\SpsSqlManager();
-        parent::__construct();
+        parent::__construct($headers);
     }
 
     /**
@@ -132,7 +131,7 @@ class SpsApi extends Api {
      */
     public function sendSpsAliasQuery($queryArgs) {
         $result = $this->sqlManager->sendSpsAliasQuery($queryArgs);
-        return \utiliy\XmlManager::arrayToSpsXml($result);
+        return $this->serialManager->arrayToSps($result);
     }
 
     /**
@@ -158,7 +157,7 @@ class SpsApi extends Api {
         
         // send querry
         $result = $this->sqlManager->sendSpsCoordinateQuery($queryArgs);
-        return \utiliy\XmlManager::arrayToSpsXml($result);
+        return $this->serialManager->arrayToSps($result);
     }
 
     /**
diff --git a/geoapi/service/pis/index.php b/geoapi/service/pis/index.php
index 5d66718..d130870 100644
--- a/geoapi/service/pis/index.php
+++ b/geoapi/service/pis/index.php
@@ -3,8 +3,9 @@
 include_once "../../global.inc.php";
 require_once PATH_API . "/PisApi.php";
 
+$headers = apache_request_headers();
 // instance a new api
-$app = new \api\PisApi();
+$app = new \api\PisApi($headers);
 
 // HTTP-Get-Method
 $app->get(\api\PisApi::$routeParameterPids, function ($pid) use ($app) {
diff --git a/geoapi/service/pss/index.php b/geoapi/service/pss/index.php
index 61bcbab..e6b37bb 100644
--- a/geoapi/service/pss/index.php
+++ b/geoapi/service/pss/index.php
@@ -3,8 +3,9 @@
 include_once "../../global.inc.php";
 require_once PATH_API . "/PssApi.php";
 
+$headers = apache_request_headers();
 // instance a new api
-$app = new \api\PssApi();
+$app = new \api\PssApi($headers);
 
 // HTTP-Get-Method
 $app->get(\api\PssApi::$routeParameterPids, function ($pid) use ($app) {
diff --git a/geoapi/service/sps/index.php b/geoapi/service/sps/index.php
index 9e33d0f..cb1d191 100644
--- a/geoapi/service/sps/index.php
+++ b/geoapi/service/sps/index.php
@@ -2,9 +2,10 @@
 
 include_once "../../global.inc.php";
 require_once PATH_API . "/SpsApi.php";
+$headers = apache_request_headers();
 
 // instance a new api
-$app = new \api\SpsApi();
+$app = new \api\SpsApi($headers);
 
 // HTTP-Get-Methods
 $app->get(\api\SpsApi::$routeParameterAlias, function ($alias) use ($app) {
diff --git a/geoapi/utility/JsonManager.php b/geoapi/utility/JsonManager.php
index 6874b8d..2f77641 100644
--- a/geoapi/utility/JsonManager.php
+++ b/geoapi/utility/JsonManager.php
@@ -3,13 +3,14 @@
 namespace utiliy;
 
 include_once "../../global.inc.php";
+require_once PATH_UTILITTY . "/SerialManager.php";
 
 /**
  * The XmlManager provides some xml-methods
  * @author stubbfel
  * @since 25.06.2013
  */
-class JsonManager {
+class JsonManager implements SerialManager {
 
     /**
      * Name for the sap item
@@ -93,7 +94,7 @@ class JsonManager {
 
             // add placeinformation item     
             $placeInfo = array(JsonManager::$placeInfoName => $row[\database\PisSqlManager::$infName],
-            JsonManager::$placeInfoValueName => utf8_encode($row[\database\PisSqlManager::$infValue]));
+                JsonManager::$placeInfoValueName => utf8_encode($row[\database\PisSqlManager::$infValue]));
             array_push($place, $placeInfo);
         }
         return json_encode($infos);
@@ -130,6 +131,18 @@ class JsonManager {
         return json_encode($services);
     }
 
+    public function arrayToSps($result) {
+        return JsonManager::arrayToSpsJson($result);
+    }
+
+    public function arrayToPss($result) {
+        return JsonManager::arrayToPssJson($result);
+    }
+
+    public function arrayToPis($result) {
+        return JsonManager::arrayToPisJson($result);
+    }
+
 }
 
 ?>
diff --git a/geoapi/utility/SerialManager.php b/geoapi/utility/SerialManager.php
new file mode 100644
index 0000000..55068d6
--- /dev/null
+++ b/geoapi/utility/SerialManager.php
@@ -0,0 +1,15 @@
+<?php
+namespace utiliy;
+
+/**
+ *
+ * @author stubbfel
+ */
+interface SerialManager {
+    
+public function arrayToSps($result);
+public function arrayToPis($result);
+public function arrayToPss($result);
+}
+
+?>
diff --git a/geoapi/utility/XmlManager.php b/geoapi/utility/XmlManager.php
index 8465a44..edac86d 100644
--- a/geoapi/utility/XmlManager.php
+++ b/geoapi/utility/XmlManager.php
@@ -3,13 +3,14 @@
 namespace utiliy;
 
 include_once "../../global.inc.php";
+require_once PATH_UTILITTY . "/SerialManager.php";
 
 /**
  * The XmlManager provides some xml-methods
  * @author stubbfel
  * @since 25.06.2013
  */
-class XmlManager {
+class XmlManager  implements SerialManager{
 
     /**
      * a default xml document
@@ -157,6 +158,18 @@ class XmlManager {
         }
         return $xml->asXML();
     }
+    
+    public function arrayToSps($result) {
+        return XmlManager::arrayToSpsXml($result);
+    }
+    
+    public function arrayToPis($result){
+        return XmlManager::arrayToPisXml($result); 
+    }
+    
+    public function arrayToPss($result) {
+        return XmlManager::arrayToPssXml($result);
+    }
 
 }