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test/org/apache/catalina/startup/TesterServletEncodeUrl.java

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+/*
+ *  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.
+ */
+package org.apache.catalina.startup;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * A test servlet that will always encode the url in case the client requires
+ * session persistence but is not configured to support cookies.
+ */
+public class TesterServletEncodeUrl extends HttpServlet {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * Almost minimal processing for a servlet.
+     * <p>
+     * The request parameter <code>nextUrl</code> specifies the url to which the
+     * caller would like to go next. If supplied, put an encoded url into the
+     * returned html page as a hyperlink.
+     */
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
+            throws ServletException, IOException {
+
+        resp.setContentType("text/plain");
+        PrintWriter out = resp.getWriter();
+        out.print("OK");
+
+        String param = req.getParameter("nextUrl");
+        if (param!=null) {
+            // append an encoded url to carry the sessionids
+            String targetUrl = resp.encodeURL(param);
+            out.print(". You want to go <a href=\"");
+            out.print(targetUrl);
+            out.print("\">here next</a>.");
+        }
+    }
+}