bugfix/issue-166/fix-apostrophe-issue

backend/src/main/java/com/UoB/AILearningTool/AiLearningToolApplication.java

@@ -50,6 +50,10 @@ private void overwriteApplicationProperties(Path propsFile) throws IOException {
 				"spring.servlet.multipart.max-request-size=50MB",
 				"spring.web.resources.static-locations=classpath:/static/",
 				"",
+				"spring.http.encoding.charset=UTF-8",
+				"spring.http.encoding.enabled=true",
+				"spring.http.encoding.force=true",
+				"",
 				"server.ssl.key-store=classpath:keystore.p12",
 				"server.ssl.key-store-password=ailearntool",
 				"server.ssl.key-store-type=PKCS12",

backend/src/main/java/com/UoB/AILearningTool/SpringController.java

@@ -140,7 +140,7 @@ public void sendMessage(@CookieValue(value = "userID", defaultValue = "") String
                             @RequestParam(name = "newMessage") String newMessage,
                            @RequestParam(name = "chatID") String chatID,
                            HttpServletResponse response) {
-        response.setContentType("text/plain");
+        response.setContentType("text/plain; charset=utf-8");
         response.setStatus(401); // Default
 
         // 1) Get the user

backend/src/main/resources/application.properties

@@ -3,3 +3,6 @@ spring.servlet.multipart.max-file-size=50MB
 spring.servlet.multipart.max-request-size=50MB
 spring.web.resources.static-locations=classpath:/static/
 server.port=8080
+server.servlet.encoding.charset=UTF-8
+server.servlet.encoding.enabled=true
+server.servlet.encoding.force=true