#498 Add followRedirect() method to JavaLite HTTP

Author: Igor Polevoy

javalite-common/src/main/java/org/javalite/http/Delete.java

@@ -39,6 +39,7 @@ public Delete doConnect() {
         try {
             connection.setDoOutput(true);
             connection.setRequestMethod("DELETE");
+            connection.setInstanceFollowRedirects(redirect);
             connection.connect();
             return this;
         } catch (Exception e) {

javalite-common/src/main/java/org/javalite/http/Get.java

@@ -40,6 +40,7 @@ public Get doConnect() {
         try {
             connection.setDoInput(true);
             connection.setDoOutput(true);
+            connection.setInstanceFollowRedirects(redirect);
             connection.setUseCaches(false);
             connection.setRequestMethod("GET");
             return this;
@@ -49,8 +50,7 @@ public Get doConnect() {
     }
 
     public static void main(String[] args) {
-        
-        Get get = Http.get("http://localhost:8080/manager/html").basic("tomcat", "tomcat");
+        Get get = Http.get("https://www.yahoo.com");
         System.out.println(get.text());
         System.out.println(get.headers());
         System.out.println(get.responseCode());

javalite-common/src/main/java/org/javalite/http/Multipart.java

@@ -37,6 +37,7 @@ protected Multipart doConnect() {
             connection.setDoOutput(true); // indicates POST method
             connection.setDoInput(true);
             connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);
+            connection.setInstanceFollowRedirects(redirect);
             outputStream = connection.getOutputStream();
             writer = new PrintWriter(new OutputStreamWriter(outputStream), true);
             sendData();

javalite-common/src/main/java/org/javalite/http/Post.java

@@ -56,6 +56,7 @@ public Post doConnect() {
             connection.setDoOutput(true);
             connection.setUseCaches(false);
             connection.setRequestMethod("POST");
+            connection.setInstanceFollowRedirects(redirect);
 
             if(params.size() > 0){
                 connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

javalite-common/src/main/java/org/javalite/http/Put.java

@@ -46,6 +46,7 @@ public Put doConnect() {
             connection.setDoOutput(true);
             connection.setDoInput(true);
             connection.setRequestMethod("PUT");
+            connection.setInstanceFollowRedirects(redirect);
             OutputStream os = connection.getOutputStream();
             os.write(content);
             os.flush();

javalite-common/src/main/java/org/javalite/http/Request.java

@@ -35,6 +35,7 @@ public abstract class Request<T extends Request> {
 
     protected final HttpURLConnection connection;
     private boolean connected;
+    protected boolean redirect = false;
     protected final String url;
 
     public Request(String url, int connectTimeout, int readTimeout) {
@@ -61,6 +62,17 @@ public T header(String name, String value) {
         return (T) this;
     }
 
+    /**
+     * Configures this request to follow redirects. Default is <code>false</code>.
+     *
+     * @see https://docs.oracle.com/javase/7/docs/api/java/net/HttpURLConnection.html#instanceFollowRedirects
+     * @param redirect true to follow, false to not.
+     * @return self
+     */
+    public T redirect(boolean redirect) {
+        this.redirect = redirect;
+        return (T) this;
+    }
 
     /**
      * Returns input stream to read server response from.