Importing project
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Arnaud Roques
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="src" path="WEB-INF/src"/>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
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<classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v6.0"/>
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<classpathentry kind="lib" path="WEB-INF/lib/HTTPClient.jar"/>
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<classpathentry kind="lib" path="WEB-INF/lib/plantuml.jar"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>
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package net.sourceforge.plantuml.servlet;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.net.URL;
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import java.net.URLDecoder;
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import java.util.StringTokenizer;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import net.sourceforge.plantuml.SourceStringReader;
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import net.sourceforge.plantuml.code.Transcoder;
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import net.sourceforge.plantuml.code.TranscoderUtil;
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import HTTPClient.CookieModule;
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import HTTPClient.HTTPConnection;
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import HTTPClient.HTTPResponse;
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import HTTPClient.ModuleException;
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import HTTPClient.ParseException;
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/*
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* Original idea from Achim Abeling for Confluence macro
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* See http://www.banapple.de/display/BANAPPLE/plantuml+user+macro
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*
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* Modified by Arnaud Roques
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* Packaged by Maxime Sinclair
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*
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*/
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public class PlantUmlServlet extends HttpServlet {
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private static final Pattern startumlPattern = Pattern
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.compile("/\\w+/uml/startuml/(.*)");
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private static final Pattern imagePattern = Pattern
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.compile("/\\w+/uml/image/(.*)");
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private static final Pattern proxyPattern = Pattern
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.compile("/\\w+/uml/proxy/((\\d+)/)?(http://.*)");
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public void doGet(HttpServletRequest request, HttpServletResponse response)
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throws IOException, ServletException {
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final String uri = request.getRequestURI();
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Matcher startumlMatcher = startumlPattern.matcher(uri);
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Matcher imageMatcher = imagePattern.matcher(uri);
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Matcher proxyMatcher = proxyPattern.matcher(uri);
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if (startumlMatcher.matches()) {
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String source = startumlMatcher.group(1);
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handleImage(response, source);
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} else if (imageMatcher.matches()) {
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String source = imageMatcher.group(1);
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handleImageDecompress(response, source);
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} else if (proxyMatcher.matches()) {
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String num = proxyMatcher.group(2);
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String source = proxyMatcher.group(3);
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handleImageProxy(response, num, source);
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} else {
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doPost(request, response);
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}
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}
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@Override
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protected void doPost(HttpServletRequest request, HttpServletResponse resp)
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throws ServletException, IOException {
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PrintWriter writer = resp.getWriter();
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writer.print("<html>");
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writer.print("<head>");
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writer.print("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />");
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writer.print("<meta http-equiv=\"expires\" content=\"0\">");
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writer.print("<meta http-equiv=\"pragma\" content=\"no-cache\">");
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writer.print("<meta http-equiv=\"cache-control\" content=\"no-cache, must-revalidate\">");
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writer.print("<link rel=\"SHORTCUT ICON\" href=\"/plantuml/favicon.ico\">");
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writer.print("</head>");
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writer.print("<body>");
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writer.print("<h1>PlantUMLServer</h1><p>This application provides a servlet which serves images createdby <a href=\"http://plantuml.sourceforge.net\">PlantUML</a>.</p>");
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String text = request.getParameter("text");
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String url = request.getParameter("url");
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String encode = "";
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Transcoder transcoder = getTranscoder();
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if (url != null) {
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Pattern p = Pattern.compile(".*/(.*)");
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Matcher m = p.matcher(url);
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if (m.find()) {
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url = m.group(1);
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}
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text = transcoder.decode(url);
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}
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writer.print("<form method=post action=\"/plantuml/uml/post\"><textarea name=\"text\" cols=\"120\" rows=\"10\">");
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if (text != null) {
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encode = transcoder.encode(text);
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writer.print(text);
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}
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writer.print("</textarea><br><input type=\"submit\"></form>");
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writer.print("<hr>");
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writer.print("You can enter here a previously generated URL:<p>");
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String host = "http://" + request.getServerName()+ ":" + request.getServerPort();
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String total = host + "/plantuml/uml/image/" + encode;
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writer.print("<form method=\"post\" action=\"/plantuml/uml/post\"><input name=\"url\" type=\"text\" size=\"150\" value=\""
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+ total + "\">");
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writer.print("<br><input type=\"submit\"></form>");
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if (text != null) {
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writer.print("<hr>");
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writer.print("You can use the following URL:<p>");
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String urlPart = "\"" + total + "\"";
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writer.print("<a href=" + urlPart + " >");
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writer.print("<code>");
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writer.print("<img src=" + urlPart + " >");
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writer.print("</code></a><p>");
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writer.print("<a href=" + urlPart + " >");
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writer.print("<img src=\"/plantuml/uml/image/" + encode + "\" >");
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writer.print("</a>");
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}
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writer.print("</body></html>");
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writer.flush();
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}
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private Transcoder getTranscoder() {
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return TranscoderUtil.getDefaultTranscoder();
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}
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private void handleImage(HttpServletResponse response, String source)
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throws IOException {
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source = URLDecoder.decode(source, "UTF-8");
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StringBuilder plantUmlSource = new StringBuilder();
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StringTokenizer tokenizer = new StringTokenizer(source, "/@");
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while (tokenizer.hasMoreTokens()) {
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String token = tokenizer.nextToken();
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plantUmlSource.append(token).append("\n");
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}
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sendImage(response, plantUmlSource.toString());
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}
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private void handleImageDecompress(HttpServletResponse response,
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String source) throws IOException {
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source = URLDecoder.decode(source, "UTF-8");
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Transcoder transcoder = getTranscoder();
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String text2 = transcoder.decode(source);
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sendImage(response, text2);
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}
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private void handleImageProxy(HttpServletResponse response, String num,
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String source) throws IOException {
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String s = getContent(source);
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SourceStringReader reader = new SourceStringReader(s);
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int n = num == null ? 0 : Integer.parseInt(num);
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// Write the first image to "os"
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reader.generateImage(response.getOutputStream(), n);
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}
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private void sendImage(HttpServletResponse response, String text)
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throws IOException {
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StringBuilder plantUmlSource = new StringBuilder();
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plantUmlSource.append("@startuml\n");
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plantUmlSource.append(text);
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plantUmlSource.append("\n@enduml");
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SourceStringReader reader = new SourceStringReader(plantUmlSource
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.toString());
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// Write the first image to "os"
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response.setContentType("image/png");
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reader.generateImage(response.getOutputStream());
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response.flushBuffer();
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}
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public String getContent(String adress) throws IOException {
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// HTTPConnection.setProxyServer("proxy", 8080);
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CookieModule.setCookiePolicyHandler(null);
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final Pattern p = Pattern.compile("http://[^/]+(/?.*)");
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final Matcher m = p.matcher(adress);
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if (m.find() == false) {
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throw new IOException(adress);
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}
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final URL url = new URL(adress);
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final HTTPConnection httpConnection = new HTTPConnection(url);
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try {
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final HTTPResponse resp = httpConnection.Get(m.group(1));
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return resp.getText();
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} catch (ModuleException e) {
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throw new IOException(e.toString());
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} catch (ParseException e) {
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throw new IOException(e.toString());
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}
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}
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}
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@ -0,0 +1,15 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
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<display-name>plantuml</display-name>
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<servlet>
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<servlet-name>plantumlservlet</servlet-name>
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<servlet-class>net.sourceforge.plantuml.servlet.PlantUmlServlet</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>plantumlservlet</servlet-name>
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<url-pattern>/uml/*</url-pattern>
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</servlet-mapping>
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<welcome-file-list>
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<welcome-file>uml</welcome-file>
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</welcome-file-list>
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</web-app>
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