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| 1 | +import com.fasterxml.jackson.core.JsonProcessingException; |
| 2 | +import com.fasterxml.jackson.databind.ObjectMapper; |
| 3 | +import org.w3c.dom.Document; |
| 4 | +import org.w3c.dom.Element; |
| 5 | +import org.w3c.dom.Node; |
| 6 | +import org.w3c.dom.NodeList; |
| 7 | +import org.xml.sax.SAXException; |
| 8 | + |
| 9 | +import javax.xml.parsers.DocumentBuilder; |
| 10 | +import javax.xml.parsers.DocumentBuilderFactory; |
| 11 | +import javax.xml.parsers.ParserConfigurationException; |
| 12 | +import javax.xml.transform.*; |
| 13 | +import javax.xml.transform.dom.DOMSource; |
| 14 | +import javax.xml.transform.stream.StreamResult; |
| 15 | +import java.io.File; |
| 16 | +import java.io.IOException; |
| 17 | +import java.nio.file.Files; |
| 18 | +import java.util.ArrayList; |
| 19 | +import java.util.HashMap; |
| 20 | +import java.util.List; |
| 21 | +import java.util.Map; |
| 22 | + |
| 23 | +public class Josegs95 { |
| 24 | + |
| 25 | + private static final String XML_FILENAME = "Josegs95.xml"; |
| 26 | + private static final String JSON_FILENAME = "Josegs95.json"; |
| 27 | + |
| 28 | + public static void main(String[] args) { |
| 29 | + String name = "Jose"; |
| 30 | + String age = "29"; |
| 31 | + String birthdate = "28-02-1995"; |
| 32 | + |
| 33 | + List<String> languageList = new ArrayList<>(); |
| 34 | + languageList.add("Java"); |
| 35 | + languageList.add("Python"); |
| 36 | + |
| 37 | + Map<String, Object> dataMap = new HashMap<>(); |
| 38 | + dataMap.put("name", name); |
| 39 | + dataMap.put("age", age); |
| 40 | + dataMap.put("birthdate", birthdate); |
| 41 | + dataMap.put("language_list", languageList); |
| 42 | + |
| 43 | + //El reto usa los archivos de los ejercicios XML y JSON, por eso la línea que borra |
| 44 | + //los ficheros está comentada. |
| 45 | + |
| 46 | + //XML |
| 47 | + exerciseXML(dataMap); |
| 48 | + |
| 49 | + //JSON |
| 50 | + exerciseJSON(dataMap); |
| 51 | + |
| 52 | + //Reto |
| 53 | + System.out.println("\n"); |
| 54 | + retoFinal(); |
| 55 | + } |
| 56 | + |
| 57 | + private static void exerciseXML(Map<String, Object> dataMap){ |
| 58 | + try { |
| 59 | + //Creo el builder |
| 60 | + DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); |
| 61 | + DocumentBuilder builder = factory.newDocumentBuilder(); |
| 62 | + |
| 63 | + //Obtengo el documento |
| 64 | + Document document = builder.newDocument(); |
| 65 | + |
| 66 | + //Creo el elemento raiz |
| 67 | + Element root = document.createElement("datos"); |
| 68 | + document.appendChild(root); |
| 69 | + |
| 70 | + //Creo los elementos para insertar los datos y los coloco bajo el elemento raiz |
| 71 | + |
| 72 | + for (Map.Entry<String, Object> entry : dataMap.entrySet()){ |
| 73 | + Element element = document.createElement(entry.getKey()); |
| 74 | + Object value = entry.getValue(); |
| 75 | + if (value instanceof String) |
| 76 | + element.appendChild(document.createTextNode((String) value)); |
| 77 | + else if (value instanceof List<?>){ |
| 78 | + for (String itemText : ((List<String>) value)){ |
| 79 | + Element itemElement = document.createElement("language"); |
| 80 | + itemElement.appendChild(document.createTextNode(itemText)); |
| 81 | + element.appendChild(itemElement); |
| 82 | + } |
| 83 | + } else |
| 84 | + continue; |
| 85 | + |
| 86 | + root.appendChild(element); |
| 87 | + } |
| 88 | + |
| 89 | + //Creo el objeto transformer y lo preparo para escribir el documento con el que hemos trabajado |
| 90 | + TransformerFactory transformerFactory = TransformerFactory.newInstance(); |
| 91 | + Transformer transformer = transformerFactory.newTransformer(); |
| 92 | + //transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //Para ver de forma mas clara el XML |
| 93 | + DOMSource source = new DOMSource(document); |
| 94 | + |
| 95 | + //Escribo en el archivo con la ruta especificada |
| 96 | + File xmlFile = new File(XML_FILENAME); |
| 97 | + StreamResult result = new StreamResult(xmlFile); |
| 98 | + transformer.transform(source, result); |
| 99 | + |
| 100 | + //Leer el XML |
| 101 | + |
| 102 | + //Leemos el archivo de forma normal |
| 103 | + String xmlString = new String(Files.readAllBytes(xmlFile.toPath())); |
| 104 | + System.out.println(xmlString); |
| 105 | + |
| 106 | + //deleteFile(new File (XML_FILENAME)); |
| 107 | + } catch (ParserConfigurationException e) { |
| 108 | + throw new RuntimeException(e); |
| 109 | + } catch (TransformerConfigurationException e) { |
| 110 | + throw new RuntimeException(e); |
| 111 | + } catch (TransformerException e) { |
| 112 | + throw new RuntimeException(e); |
| 113 | + } catch (IOException e) { |
| 114 | + throw new RuntimeException(e); |
| 115 | + } |
| 116 | + } |
| 117 | + |
| 118 | + private static void exerciseJSON(Map<String, Object> dataMap){ |
| 119 | + try { |
| 120 | + File jsonFile = new File (JSON_FILENAME); |
| 121 | + ObjectMapper objectMapper = new ObjectMapper(); |
| 122 | + |
| 123 | + //Escribir en el fichero un mapa en formato JSON |
| 124 | + //objectMapper.writeValue(jsonFile, dataMap); |
| 125 | + objectMapper.writerWithDefaultPrettyPrinter().writeValue(jsonFile, dataMap); |
| 126 | + |
| 127 | + //Recuperar los datos de un JSON y meterlos en un mapa |
| 128 | + Map<String, Object> newDataMap = new HashMap<>(); |
| 129 | + newDataMap = objectMapper.readValue(jsonFile, newDataMap.getClass()); |
| 130 | + System.out.println(newDataMap); |
| 131 | + |
| 132 | + //deleteFile(jsonFile); |
| 133 | + } catch (JsonProcessingException e) { |
| 134 | + throw new RuntimeException(e); |
| 135 | + } catch (IOException e) { |
| 136 | + throw new RuntimeException(e); |
| 137 | + } |
| 138 | + } |
| 139 | + |
| 140 | + private static void retoFinal(){ |
| 141 | + //XML |
| 142 | + File xmlFile = new File(XML_FILENAME); |
| 143 | + DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); |
| 144 | + try { |
| 145 | + DocumentBuilder builder = factory.newDocumentBuilder(); |
| 146 | + Document document = builder.parse(xmlFile); |
| 147 | + |
| 148 | + //document.getDocumentElement().normalize(); |
| 149 | + String name = document.getElementsByTagName("name").item(0).getTextContent(); |
| 150 | + String age = document.getElementsByTagName("age").item(0).getTextContent(); |
| 151 | + String birthdate = document.getElementsByTagName("birthdate").item(0).getTextContent(); |
| 152 | + List<String> languageList = new ArrayList<>(); |
| 153 | + |
| 154 | + Node languagesNode = document.getElementsByTagName("language_list").item(0); |
| 155 | + NodeList languagesNodeList = languagesNode.getChildNodes(); |
| 156 | + for (int i = 0; i < languagesNodeList.getLength(); i++){ |
| 157 | + Node node = languagesNodeList.item(i); |
| 158 | + languageList.add(node.getTextContent()); |
| 159 | + } |
| 160 | + |
| 161 | + Person personFromXML = new Person(name, age, birthdate, languageList); |
| 162 | + System.out.println("Persona XML = " + personFromXML); |
| 163 | + } catch (ParserConfigurationException e) { |
| 164 | + throw new RuntimeException(e); |
| 165 | + } catch (IOException e) { |
| 166 | + throw new RuntimeException(e); |
| 167 | + } catch (SAXException e) { |
| 168 | + throw new RuntimeException(e); |
| 169 | + } |
| 170 | + |
| 171 | + //JSON |
| 172 | + File jsonFile = new File (JSON_FILENAME); |
| 173 | + ObjectMapper objectMapper = new ObjectMapper(); |
| 174 | + |
| 175 | + try { |
| 176 | + Map<String, Object> dataMap = new HashMap<>(); |
| 177 | + dataMap = objectMapper.readValue(jsonFile, dataMap.getClass()); |
| 178 | + |
| 179 | + String name = (String) dataMap.get("name"); |
| 180 | + String age = (String) dataMap.get("age"); |
| 181 | + String birthdate = (String) dataMap.get("birthdate"); |
| 182 | + List<String> languageList = (List<String>) dataMap.get("language_list"); |
| 183 | + Person personFromJSON = new Person(name, age, birthdate, languageList); |
| 184 | + |
| 185 | + System.out.println("Persona JSOM = " + personFromJSON); |
| 186 | + } catch (IOException e) { |
| 187 | + throw new RuntimeException(e); |
| 188 | + } |
| 189 | + |
| 190 | + deleteFile(xmlFile); |
| 191 | + deleteFile(jsonFile); |
| 192 | + } |
| 193 | + |
| 194 | + private static void deleteFile(File file){ |
| 195 | + if (file.delete()) |
| 196 | + System.out.println("Se ha borrado el archivo con éxito."); |
| 197 | + else |
| 198 | + System.out.println("No se ha podido borrar el archivo."); |
| 199 | + } |
| 200 | + |
| 201 | + public static class Person{ |
| 202 | + private String name; |
| 203 | + private String age; |
| 204 | + private String birthdate; |
| 205 | + private List<String> languageList; |
| 206 | + |
| 207 | + public Person(String name, String age, String birthdate, List<String> languageList) { |
| 208 | + this.name = name; |
| 209 | + this.age = age; |
| 210 | + this.birthdate = birthdate; |
| 211 | + this.languageList = languageList; |
| 212 | + } |
| 213 | + |
| 214 | + public Person(){} |
| 215 | + |
| 216 | + public String getName() { |
| 217 | + return name; |
| 218 | + } |
| 219 | + |
| 220 | + public void setName(String name) { |
| 221 | + this.name = name; |
| 222 | + } |
| 223 | + |
| 224 | + public String getAge() { |
| 225 | + return age; |
| 226 | + } |
| 227 | + |
| 228 | + public void setAge(String age) { |
| 229 | + this.age = age; |
| 230 | + } |
| 231 | + |
| 232 | + public String getBirthdate() { |
| 233 | + return birthdate; |
| 234 | + } |
| 235 | + |
| 236 | + public void setBirthdate(String birthdate) { |
| 237 | + this.birthdate = birthdate; |
| 238 | + } |
| 239 | + |
| 240 | + public List<String> getLanguageList() { |
| 241 | + return languageList; |
| 242 | + } |
| 243 | + |
| 244 | + public void setLanguageList(List<String> languageList) { |
| 245 | + this.languageList = languageList; |
| 246 | + } |
| 247 | + |
| 248 | + @Override |
| 249 | + public String toString() { |
| 250 | + return "Nombre: " + name + |
| 251 | + ", Edad: " + age + |
| 252 | + ", Fecha de nacimiento: " + birthdate + |
| 253 | + ", Lista de lenguajes: " + languageList; |
| 254 | + } |
| 255 | + } |
| 256 | +} |
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