Add POST method extension.

sig/client.java

@@ -1,10 +1,9 @@
 package sig;
 import java.net.http.HttpResponse;
-import java.nio.file.Path;
-import java.nio.file.Paths;
 
 import sig.exceptions.FailedResponseException;
 import sig.requests.GETRequest;
+import sig.requests.POSTRequest;
 
 public class client {
     public static void main(String[] args) {
@@ -14,6 +13,12 @@ public class client {
             GETRequest res = new GETRequest("https://postman-echo.com/get?foo1=bar1&foo2=bar2");
             System.out.println(((HttpResponse<String>)res.run()).body());
 
+            /*GET Block
+
+                //Regular get request:
+                GETRequest res = new GETRequest("https://postman-echo.com/get?foo1=bar1&foo2=bar2");
+                System.out.println(((HttpResponse<String>)res.run()).body());
+
                 //Download to file:
                 //GETRequest res = new GETRequest("https://postman-echo.com/get?foo1=bar1&foo2=bar2",30000,Paths.get("test.html"),"default","value");
                 //System.out.println((Path)((HttpResponse<Path>)res.run()).body());
@@ -29,6 +34,16 @@ public class client {
                 //Get request with authentication:
                 res = new GETRequest("https://postman-echo.com/basic-auth","postman","password",30000,null);
                 System.out.println(((HttpResponse<String>)res.run()).body());
+            */
+
+            //Regular POST request with body:
+            POSTRequest postRes = new POSTRequest("https://postman-echo.com/post","Test body");
+            System.out.println(((HttpResponse<String>)postRes.run()).body());
+
+            //POST request with body and headers:
+            postRes = new POSTRequest("https://postman-echo.com/post","Test body", 30000, "header1","value1", "header2","value2");
+            System.out.println(((HttpResponse<String>)postRes.run()).body());
+
         } catch (FailedResponseException e) {
             e.printStackTrace();
         }

sig/requests/GETRequest.java

@@ -35,7 +35,6 @@ public class GETRequest{
         this.headers = headers;
         this.timeout = timeout;
         this.file=file;
-        build();
     }
     /**
      * @param file The file path info, use this for file downloads or set to null for standard text.
@@ -54,6 +53,7 @@ public class GETRequest{
         this(url,30000,null);
     }
     public HttpResponse<?> run() throws FailedResponseException {
+        build();
         try {
             if (file==null) {
                 return client.send(req,BodyHandlers.ofString());
@@ -65,17 +65,22 @@ public class GETRequest{
         }
         throw new FailedResponseException("No proper response returned. THIS SHOULD NOT BE HAPPENING!");
     }
-    private void build(){
+    protected java.net.http.HttpRequest.Builder finalizeRequestPreBuild(java.net.http.HttpRequest.Builder requestBuild) throws FailedResponseException {
+        return requestBuild.GET();
+    }
+    protected Builder finalizeClientPreBuild(Builder clientBuild) {
+        return clientBuild;
+    }
+    protected void build(){
         boolean AUTH_REQUIRED=user.length()>0&&pass.length()>0;
         try {
             java.net.http.HttpRequest.Builder requestBuild=HttpRequest.newBuilder(new URI(url))
             .version(HttpClient.Version.HTTP_2)
-            .timeout(Duration.ofMillis(timeout))
-            .GET();
+            .timeout(Duration.ofMillis(timeout));
             if (headers!=null&&headers.length>0) {
                 requestBuild.headers(headers);
             }
-            req = requestBuild.build();
+            req = finalizeRequestPreBuild(requestBuild).build();
             Builder clientBuild=HttpClient.newBuilder()
             .followRedirects(HttpClient.Redirect.ALWAYS);
             if (AUTH_REQUIRED) {
@@ -86,8 +91,8 @@ public class GETRequest{
                     }
                 });
             }
-            client = clientBuild.build();
-        } catch (URISyntaxException e) {
+            client = finalizeClientPreBuild(clientBuild).build();
+        } catch (URISyntaxException | FailedResponseException e) {
             e.printStackTrace();
         }
     }

sig/requests/POSTRequest.java

@@ -0,0 +1,53 @@
+package sig.requests;
+
+import java.io.FileNotFoundException;
+import java.net.http.HttpRequest;
+import java.net.http.HttpClient.Builder;
+import java.nio.file.Path;
+
+import sig.exceptions.FailedResponseException;
+
+public class POSTRequest extends GETRequest{
+
+    String body = "";
+
+    public POSTRequest(String url, String body, String username, String password, long timeout, Path file, String... headers) {
+        super(url, username, password, timeout, file, headers);
+        this.body=body;
+    }
+
+    public POSTRequest(String url, String body, long timeout, Path file, String... headers) {
+        super(url, timeout, file, headers);
+        this.body=body;
+    }
+
+    public POSTRequest(String url, String body, long timeout, String... headers) {
+        super(url, timeout, headers);
+        this.body=body;
+    }
+
+    public POSTRequest(String url, String body) {
+        super(url);
+        this.body=body;
+    }
+
+    @Override
+    protected java.net.http.HttpRequest.Builder finalizeRequestPreBuild(
+            java.net.http.HttpRequest.Builder requestBuild) throws FailedResponseException{
+                requestBuild.headers("Content-Type","application/json");
+        try {
+            return file!=null?requestBuild.POST(HttpRequest.BodyPublishers.ofFile(file)):
+            body.length()>0?requestBuild.POST(HttpRequest.BodyPublishers.ofString(body)):
+            requestBuild.POST(HttpRequest.BodyPublishers.noBody());
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+        throw new FailedResponseException("Could not complete request build. THIS SHOULD NOT BE HAPPENING!");
+    }
+
+    @Override
+    protected Builder finalizeClientPreBuild(Builder clientBuild) {
+        return clientBuild;
+    }
+    
+}