EchoServlet.java

/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 * 
 * Licensed 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 com.google.apphosting.tests.usercode.testservlets;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.ByteArrayOutputStream;
import java.net.URLEncoder;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class EchoServlet extends HttpServlet {
  public void service(HttpServletRequest req, HttpServletResponse res) throws IOException {
    res.setContentType(req.getContentType());
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    copy(req.getInputStream(), baos);
    res.sendRedirect("/content?data=" + URLEncoder.encode(new String(baos.toByteArray())));
  }

  private void copy(InputStream in, OutputStream out) throws IOException {
    byte[] buffer = new byte[8192];
    int len;
    while ((len = in.read(buffer)) >= 0) {
      out.write(buffer, 0, len);
    }
  }
}