Created the ResponseModificationData to return modification responses.

Added Documentation in the README.md for the ResponseModificationData.
Added an Example Route ("/redirect") to Example.java to show the usage of the ResponseModificationData.
Updated to Version 1.3.2

Author: JoshiCodes

README.md

@@ -15,7 +15,7 @@ You can also download the newest version from the [releases](https://github.com/
 <dependency>
     <groupId>de.joshicodes</groupId>
     <artifactId>webapi</artifactId>
-    <version>1.3.1b</version>
+    <version>1.3.2</version>
 </dependency>
 ```
 
@@ -106,6 +106,8 @@ You can create a new ResponseData object using the `ResponseData.Builder` class.
 ```
 You can also use `ResponseData#from(int code, String body)` to create a new Builder object.
 
+To redirect the client, return a `ResponseModificationData` Object, which you can create by using `ResponseData#redirect(String)`. This will redirect the client to the specified path.
+
 <br><br>
 
 ## Error Handling

examples/Example.java

@@ -49,6 +49,9 @@ public ResponseData handle(RequestData request) {
             }
         });
 
+        // Redirect to another url
+        builder.addRoute("/redirect", request -> ResponseData.redirect("https://google.com"));
+
         Webserver server = builder.build();  // build the server
         server.start();  // start the server
 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>de.joshicodes</groupId>
     <artifactId>webapi</artifactId>
-    <version>1.3.1d</version>
+    <version>1.3.2</version>
 
     <build>
         <plugins>

src/main/java/de/joshicodes/webapi/Webserver.java

@@ -253,6 +253,23 @@ private void write(ResponseData response, HttpExchange exchange) throws IOExcept
             exchange.getResponseBody().write(body.getBytes());
             exchange.getResponseBody().close();
         } else {
+
+            if(response instanceof ResponseModificationData modificationData) {
+
+                if(modificationData.getRedirectLocation() != null) {
+
+                    exchange.getResponseHeaders().add("Location", modificationData.getRedirectLocation());
+                    exchange.sendResponseHeaders(302, 0);
+                    exchange.sendResponseHeaders(302, 0);
+                    exchange.getResponseBody().close();
+
+                } else {
+                    // Future implementations here
+                }
+
+                return;
+            }
+
             exchange.sendResponseHeaders(response.getStatusCode(), 0);
             exchange.getResponseBody().close();
         }

src/main/java/de/joshicodes/webapi/request/ResponseData.java

@@ -13,6 +13,19 @@ public abstract class ResponseData {
     abstract public String getHeader(String key);
     abstract public HashMap<String, String> getHeaders();
 
+    /**
+     * Creates a new {@link ResponseModificationData} object that redirects to the given URL
+     * @param url The URL to redirect to. Has to be a valid URL
+     * @return The ResponseModificationData object
+     */
+    public static ResponseModificationData redirect(String url) {
+        return new ResponseModificationData() {
+            @Override
+            public String getRedirectLocation() {
+                return url;
+            }
+        };
+    }
 
     /**
      * Creates a new ResponseData object with the given body<br>

src/main/java/de/joshicodes/webapi/request/ResponseModificationData.java

@@ -0,0 +1,49 @@
+package de.joshicodes.webapi.request;
+
+import org.jetbrains.annotations.Nullable;
+
+import java.util.HashMap;
+
+/**
+ * This class is used when the Response returned by the server should end up being modified.
+ * This is used for example when the server should redirect to another page.
+ * @see ResponseData
+ */
+public abstract class ResponseModificationData extends ResponseData {
+
+    /**
+     * Returns the location to redirect to or null if the response should not be redirected
+     * Has to be a valid URL
+     * @return The location to redirect to
+     */
+    abstract @Nullable public String getRedirectLocation();
+
+
+    // Override all methods from ResponseData to return null or -1
+
+    @Override
+    public String getBody() {
+        return null;
+    }
+
+    @Override
+    public String getHeader(String key) {
+        return null;
+    }
+
+    @Override
+    public HashMap<String, String> getHeaders() {
+        return null;
+    }
+
+    @Override
+    public int getStatusCode() {
+        return -1;
+    }
+
+    @Override
+    public String getContentType() {
+        return null;
+    }
+
+}