Android 開發工具類 20_DOMPersonService

標籤：

xml 檔案

 1 <?xml version="1.0" encoding="UTF-8"?> 2 <persons> 3     <person id = "23"> 4         <name>NEwii</name> 5         <age>21</age> 6     </person> 7     <person id = "20"> 8         <name>WiiWill</name> 9         <age>25</age>10     </person>11 </persons>

 DOM 格式

 DOM 解析 XML 

 1 import java.io.InputStream; 2 import java.util.ArrayList; 3 import java.util.List; 4  5 import javax.xml.parsers.DocumentBuilder; 6 import javax.xml.parsers.DocumentBuilderFactory; 7  8 import org.w3c.dom.Document; 9 import org.w3c.dom.Element;10 import org.w3c.dom.Node;11 import org.w3c.dom.NodeList;12 13 import com.wangjialin.domain.Person;14 15 public class DOMPersonService {16     17     public static List<Person> getPersons(InputStream inStream) throws Exception{18         19         List<Person> persons = new ArrayList<Person>();20         DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();21         DocumentBuilder builder = factory.newDocumentBuilder();22         Document document = builder.parse(inStream);23         Element root = document.getDocumentElement();24         NodeList personNodes = root.getElementsByTagName("person");25         26         for(int i=0; i < personNodes.getLength() ; i++){27             28             Element personElement = (Element)personNodes.item(i);29             int id = new Integer(personElement.getAttribute("id"));30             Person person = new Person();31             person.setId(id);32             NodeList childNodes = personElement.getChildNodes();33             34             for(int y=0; y < childNodes.getLength(); y++){35                 if(childNodes.item(y).getNodeType() == Node.ELEMENT_NODE){36                     if("name".equals(childNodes.item(y).getNodeName())){37                         String name = childNodes.item(y).getFirstChild().getNodeValue();38                         person.setName(name);39                     }else if("age".equals(childNodes.item(y).getNodeName())){40                         String age = childNodes.item(y).getFirstChild().getNodeValue();41                         person.setAge(new Short(age));42                     }43                 }44             }45             persons.add(person);46         }47         inStream.close();48         return persons;49     }50 }

Person.java

 1 public class Person { 2      3     private Integer id; 4     private String name; 5     private Short age; 6  7     public Person(){} 8      9     public Person(Integer id, String name, Short age) {10         this.id = id;11         this.name = name;12         this.age = age;13     }14     15     public Person(String name, Short age) {16         this.name = name;17         this.age = age;18     }19     20     public Integer getId() {21         return id;22     }23 24     public void setId(Integer id) {25         this.id = id;26     }27 28     public String getName() {29         return name;30     }31 32     public void setName(String name) {33         this.name = name;34     }35 36     public Short getAge() {37         return age;38     }39 40     public void setAge(Short age) {41         this.age = age;42     }43 44     @Override45     public String toString() {46         return "id=" + id + ",name=" + name+ ",age=" + age;47     }48     49 50 }

 JUnit 測試

1 public void testDOMgetPersons() throws Throwable{2         3         InputStream inStream = this.getClass().getClassLoader().getResourceAsStream("wangjialin.xml");4         List<Person> persons = DOMPersonService.getPersons(inStream);5         6         for(Person person : persons){7             Log.i(TAG, person.toString());8         }9     }

 

Android 開發工具類 20_DOMPersonService