| commit | author | age | ||
| 94a2d9 | 1 | /* |
| U | 2 | WebBox - Dein Server. |
| 3 | Copyright (C) 2017 Ulrich Hilger, http://uhilger.de | |
| 4 | ||
| 5 | This program is free software: you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU Affero General Public License as | |
| 7 | published by the Free Software Foundation, either version 3 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU Affero General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Affero General Public License | |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 | */ | |
| 18 | package de.uhilger.wbx.web; | |
| 19 | ||
| 20 | import java.io.IOException; | |
| 21 | import java.io.PrintWriter; | |
| 22 | import java.io.StringWriter; | |
| 23 | import javax.servlet.ServletOutputStream; | |
| 24 | import javax.servlet.http.HttpServletResponse; | |
| 25 | import javax.servlet.http.HttpServletResponseWrapper; | |
| 26 | ||
| 27 | /** | |
| 28 | * Die Klasse CustomResponseWrapper faengt den Inhalt einer HttpServletResponse | |
| 29 | * in einem StringWriter auf. Dieser kann mit der Methode getResponseContent | |
| 30 | * gelesen werden. | |
| 31 | * | |
| 32 | * @author ulrich | |
| 33 | */ | |
| 34 | public class CustomResponseWrapper extends HttpServletResponseWrapper { | |
| 35 | ||
| 36 | private StringWriter stringWriter; | |
| 37 | private boolean isOutputStreamCalled; | |
| 38 | ||
| 39 | public CustomResponseWrapper(HttpServletResponse response) { | |
| 40 | super(response); | |
| 41 | } | |
| 42 | ||
| 43 | @Override | |
| 44 | public ServletOutputStream getOutputStream() throws IOException { | |
| 45 | if (this.stringWriter != null) { | |
| 46 | throw new IllegalStateException("The getWriter() is already called."); | |
| 47 | } | |
| 48 | isOutputStreamCalled = true; | |
| 49 | return super.getOutputStream(); | |
| 50 | } | |
| 51 | ||
| 52 | @Override | |
| 53 | public PrintWriter getWriter() throws IOException { | |
| 54 | if (isOutputStreamCalled) { | |
| 55 | throw new IllegalStateException("The getOutputStream() is already called."); | |
| 56 | } | |
| 57 | ||
| 58 | this.stringWriter = new StringWriter(); | |
| 59 | ||
| 60 | return new PrintWriter(this.stringWriter); | |
| 61 | } | |
| 62 | ||
| 63 | public String getResponseContent() { | |
| 64 | if (this.stringWriter != null) { | |
| 65 | return this.stringWriter.toString(); | |
| 66 | } | |
| 67 | return ""; | |
| 68 | } | |
| 69 | ||
| 70 | } | |
