package com.planet_ink.coffee_web.servlets; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.nio.charset.Charset; import com.planet_ink.coffee_web.http.HTTPMethod; import com.planet_ink.coffee_web.http.HTTPStatus; import com.planet_ink.coffee_web.http.MIMEType; import com.planet_ink.coffee_web.interfaces.SimpleServlet; import com.planet_ink.coffee_web.interfaces.SimpleServletRequest; import com.planet_ink.coffee_web.interfaces.SimpleServletResponse; /* Copyright 2012-2019 Bo Zimmerman 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. */ /** * Tests both simple get request, and is also a fun way to examine * the cookies and form data posted to this servlet, as the data is * returned in the headers. * @author Bo Zimmerman * */ public class HelloWorldServlet implements SimpleServlet { public static final String helloResponseStart="<html><body><h1>"; public static final String defaultResponseBody="Hello World!"; public static final String helloResponseEnd="</h1></body></html>"; public static final String helloResponse=helloResponseStart+defaultResponseBody+helloResponseEnd; @Override public void doGet(final SimpleServletRequest request, final SimpleServletResponse response) { try { response.setMimeType(MIMEType.All.html.getType()); response.getOutputStream().write(helloResponseStart.getBytes()); response.getOutputStream().write(defaultResponseBody.getBytes()); response.getOutputStream().write(helloResponseEnd.getBytes()); } catch (final IOException e) { response.setStatusCode(500); } } public void doDynamicPost(final SimpleServletRequest request, final SimpleServletResponse response) { try { response.setMimeType(MIMEType.All.html.getType()); response.getOutputStream().write(helloResponseStart.getBytes()); final InputStream in = request.getBody(); final ByteArrayOutputStream bout=new ByteArrayOutputStream(); int c; while((c=in.read())>=0) bout.write((byte)c); final String submitted=new String(bout.toByteArray(),Charset.forName("UTF-8")); if(submitted.length()==0) response.getOutputStream().write(defaultResponseBody.getBytes()); else response.getOutputStream().write(submitted.getBytes()); response.getOutputStream().write(helloResponseEnd.getBytes()); } catch (final IOException e) { response.setStatusCode(500); } } @Override public void doPost(final SimpleServletRequest request, final SimpleServletResponse response) { if(request.getHeader("X-DynamicPost")!=null) this.doDynamicPost(request, response); else { for(final String cookieName : request.getCookieNames()) response.setCookie(cookieName, request.getCookie(cookieName)); for(final String field : request.getUrlParameters()) response.setHeader("X-"+field, request.getUrlParameter(field)); response.setStatusCode(HTTPStatus.S204_NO_CONTENT.getStatusCode()); } } @Override public void init() { } @Override public void service(final HTTPMethod method, final SimpleServletRequest request, final SimpleServletResponse response) { if((method != HTTPMethod.POST) && (method!=HTTPMethod.GET)) response.setStatusCode(HTTPStatus.S405_METHOD_NOT_ALLOWED.getStatusCode()); } }