added support for body in GET method

README.md

@@ -22,7 +22,8 @@ The following sections describe how to use the library.
 
 ### Creating a request
 The following methods are supported through the `com.github.fracpete.requests4j.Requests` class:
-* GET -- `Requests.get()`
+* GET -- `Requests.get()` (also supports sending a payload, though this is not 
+  recommended by [RFC 7231, section 4.3.1](https://tools.ietf.org/html/rfc7231#section-4.3.1))
 * POST -- `Requests.post()`
 * PUT -- `Requests.put()`
 * PATCH -- `Requests.patch()`

src/main/java/com/github/fracpete/requests4j/request/Method.java

@@ -11,7 +11,7 @@
  * @author FracPete (fracpete at waikato dot ac dot nz)
  */
 public enum Method {
-  GET(false),
+  GET(true),
   POST(true),
   PUT(true),
   PATCH(true),

src/main/java/com/github/fracpete/requests4j/request/Request.java

@@ -23,7 +23,7 @@
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpDeleteWithBody;
-import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpGetWithBody;
 import org.apache.http.client.methods.HttpHead;
 import org.apache.http.client.methods.HttpOptions;
 import org.apache.http.client.methods.HttpPatch;
@@ -885,7 +885,7 @@ protected <T extends Response > T doExecute(T response) throws Exception {
     try {
       switch (m_Method) {
 	case GET:
-	  request = new HttpGet(url.toURI());
+	  request = new HttpGetWithBody(url.toURI());
 	  break;
 	case POST:
 	  request = new HttpPost(url.toURI());

src/main/java/org/apache/http/client/methods/HttpGetWithBody.java

@@ -0,0 +1,71 @@
+/*
+ * HttpGetWithBody.java
+ * Copyright (C) 2020 University of Waikato, Hamilton, NZ
+ */
+
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package org.apache.http.client.methods;
+
+import org.apache.http.annotation.NotThreadSafe;
+
+import java.net.URI;
+
+/**
+ * HTTP GET method, but with support of sending a body, which is not
+ * recommended by the <a href="https://tools.ietf.org/html/rfc7231#section-4.3.1">RFC 7231, section 4.3.1</a>,
+ * but used by other frameworks (like requests and django).
+ */
+@NotThreadSafe
+public class HttpGetWithBody extends HttpEntityEnclosingRequestBase {
+
+    public final static String METHOD_NAME = "GET";
+
+    public HttpGetWithBody() {
+        super();
+    }
+
+    public HttpGetWithBody(final URI uri) {
+        super();
+        setURI(uri);
+    }
+
+    /**
+     * @throws IllegalArgumentException if the uri is invalid.
+     */
+    public HttpGetWithBody(final String uri) {
+        super();
+        setURI(URI.create(uri));
+    }
+
+    @Override
+    public String getMethod() {
+        return METHOD_NAME;
+    }
+
+}