svn-gvsig-desktop / tags / v1_1_Build_1012 / applications / appCatalogYNomenclatorClient / src / es / gva / cit / catalogClient / protocols / HTTPGetProtocol.java @ 12987
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1 | 3566 | jorpiell | |
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2 | 2820 | jorpiell | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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3 | *
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4 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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19 | *
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20 | * For more information, contact:
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21 | *
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22 | * Generalitat Valenciana
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23 | * Conselleria d'Infraestructures i Transport
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24 | * Av. Blasco Ib??ez, 50
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25 | * 46010 VALENCIA
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26 | * SPAIN
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27 | *
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28 | * +34 963862235
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29 | * gvsig@gva.es
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30 | * www.gvsig.gva.es
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31 | *
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32 | * or
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33 | *
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34 | * IVER T.I. S.A
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35 | * Salamanca 50
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36 | * 46005 Valencia
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37 | * Spain
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38 | *
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39 | * +34 963163400
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40 | * dac@iver.es
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41 | */
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42 | 2047 | luisw | package es.gva.cit.catalogClient.protocols; |
43 | 3613 | jorpiell | import es.gva.cit.catalogClient.metadataXML.XMLTree; |
44 | 3566 | jorpiell | import java.io.ByteArrayInputStream; |
45 | import java.io.InputStream; |
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46 | import java.net.URL; |
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47 | import java.util.Collection; |
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48 | 2047 | luisw | import org.apache.commons.httpclient.DefaultMethodRetryHandler; |
49 | import org.apache.commons.httpclient.HttpClient; |
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50 | import org.apache.commons.httpclient.HttpStatus; |
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51 | 2145 | jorpiell | import org.apache.commons.httpclient.NameValuePair; |
52 | 2047 | luisw | import org.apache.commons.httpclient.methods.GetMethod; |
53 | 2724 | jorpiell | |
54 | 2047 | luisw | /**
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55 | 3566 | jorpiell | *
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56 | *
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57 | *
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58 | 2820 | jorpiell | * @author Jorge Piera Llodra (piera_jor@gva.es)
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59 | 2047 | luisw | */
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60 | public class HTTPGetProtocol implements IProtocols { |
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61 | 3566 | jorpiell | |
62 | /**
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63 | *
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64 | *
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65 | *
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66 | * @return
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67 | * @param url
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68 | * @param object
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69 | * @param firstRecord
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70 | */
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71 | public Collection doQuery(URL url, Object object, int firstRecord) { |
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72 | 2724 | jorpiell | NameValuePair[] parameters = (NameValuePair[]) object; |
73 | InputStream is = null; |
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74 | ByteArrayInputStream output = null; |
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75 | 3566 | jorpiell | |
76 | 2724 | jorpiell | // Create an instance of HttpClient.
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77 | HttpClient client = new HttpClient();
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78 | // Create a method instance.
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79 | GetMethod method = new GetMethod("http://" + url.getHost() + ":" + |
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80 | url.getPort() + url.getPath()); |
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81 | // Provide custom retry handler is necessary
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82 | DefaultMethodRetryHandler retryhandler = new DefaultMethodRetryHandler();
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83 | retryhandler.setRequestSentRetryEnabled(false);
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84 | retryhandler.setRetryCount(3);
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85 | method.setMethodRetryHandler(retryhandler); |
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86 | method.setQueryString(parameters); |
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87 | System.out.println(method.getQueryString());
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88 | try {
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89 | // Execute the method.
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90 | int statusCode = client.executeMethod(method);
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91 | //System.out.println("QueryString>>> "+ method.getQueryString());
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92 | if (statusCode != HttpStatus.SC_OK) {
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93 | System.err.println("Fallo en el m?todo: " + |
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94 | method.getStatusLine()); |
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95 | return null; |
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96 | } |
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97 | // Process the answer
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98 | is = method.getResponseBodyAsStream(); |
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99 | byte[] buffer = new byte[256]; |
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100 | String str = new String(""); |
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101 | while (true) { |
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102 | 2047 | luisw | int n = is.read(buffer);
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103 | 2724 | jorpiell | if (n < 0) { |
104 | break;
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105 | } |
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106 | 2047 | luisw | str = str + new String(buffer, 0, n); |
107 | 2724 | jorpiell | } |
108 | is.close(); |
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109 | System.out.println(str);
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110 | if (str.equals("")) { |
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111 | output = null;
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112 | } else {
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113 | output = new ByteArrayInputStream(str.getBytes()); |
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114 | } |
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115 | } catch (Exception e) { |
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116 | return null; |
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117 | } finally {
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118 | // Release the connection.
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119 | method.releaseConnection(); |
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120 | } |
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121 | 3566 | jorpiell | |
122 | Collection col = new java.util.ArrayList(); |
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123 | col.add(XMLTree.xmlToTree(output)); |
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124 | return col;
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125 | } |
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126 | 2724 | jorpiell | |
127 | 3566 | jorpiell | /**
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128 | *
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129 | *
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130 | *
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131 | * @return
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132 | * @param url
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133 | */
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134 | public static boolean isProtocolSupported(URL url) { |
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135 | 2724 | jorpiell | return true; |
136 | 3566 | jorpiell | } |
137 | } |