VelocityTemplate


1   package org.javabb.component;
2   
3   import java.io.StringWriter  ;
4   import java.util.Iterator  ;
5   import java.util.Map  ;
6   
7   import org.apache.commons.logging.Log;
8   import org.apache.commons.logging.LogFactory;
9   import org.apache.velocity.Template;
10  import org.apache.velocity.VelocityContext;
11  import org.apache.velocity.app.VelocityEngine;
12  
13  import com.opensymphony.webwork.views.velocity.VelocityManager;
14  
15  /*
16   * Copyright 2004 JavaFree.org
17   *
18   * Licensed under the Apache License, Version 2.0 (the "License");
19   * you may not use this file except in compliance with the License.
20   * You may obtain a copy of the License at
21   *
22   *     http://www.apache.org/licenses/LICENSE-2.0
23   *
24   * Unless required by applicable law or agreed to in writing, software
25   * distributed under the License is distributed on an "AS IS" BASIS,
26   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
27   * See the License for the specific language governing permissions and
28   * limitations under the License.
29   */
30  
31  /**
32   * $Id: VelocityTemplate.java,v 1.3.4.1.6.2 2006/04/17 17:47:31 daltoncamargo Exp $
33   * @author: Dalton Camargo
34   */
35  public class VelocityTemplate {
36      protected static final Log log = LogFactory.getLog(VelocityTemplate.class);
37  
38      /**
39       * Obtem o resultado gerado por um template velocity
40       * @param velValues - Parametros a serem inseridos no contexto
41       * @param template - Template a ser realizado o parser
42       * @return Template renderizado
43       */
44      public static String   makeTemplate(Map   velValues, String   template) {
45          String   htmlDoVelocity = "";
46          try {
47              VelocityManager vle = VelocityManager.getInstance();
48              VelocityEngine ve = vle.getVelocityEngine();
49              Template t = ve.getTemplate(template);
50              VelocityContext context = new VelocityContext();
51              Iterator   itChaves = velValues.keySet().iterator();
52              while (itChaves.hasNext()) {
53                  String   chave = (String  ) itChaves.next();
54                  context.put(chave, velValues.get(chave));
55              }
56              StringWriter   writer = new StringWriter  ();
57              t.merge(context, writer);
58  
59              htmlDoVelocity = writer.toString();
60  
61          } catch (Exception   e) {
62              log.error("Error at VelocityTemplate:" + e);
63              e.printStackTrace();
64          }
65  
66          return htmlDoVelocity;
67      }
68  
69  }
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