寵物管理系統(tǒng)

簡易寵物管理系統(tǒng)

• 寵物類（父類）

package homeworke2.pet;public class Animal {private String name;public Animal(String name) {this.name = name;}public Animal() {}public String getName() {return name;}public void setName(String name) {this.name = name;} }

• 狗狗類（子類）

package homeworke2.pet;public class Dog extends Animal {}

• 添加任意數(shù)量的子類同狗狗類
• 測試類

import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.XMLWriter; import org.junit.Test;import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.util.List; import java.util.Scanner;public class Demo {@Testpublic void test2() throws Exception {Scanner sc=new Scanner(System.in);String annimals = getAnnimals();System.out.println("請問您是要領養(yǎng)寵物還是捐獻寵物：1，領養(yǎng) 2，捐獻");int a = sc.nextInt();if(a==1){System.out.println("請選擇您要領養(yǎng)的寵物："+annimals);String name = sc.next();System.out.println("請輸入您要領養(yǎng)的寵物名字"+getname1(name));String name1 = sc.next();removeName(name,name1);}else {System.out.println("請輸入您要捐獻的寵物"+annimals+"或其他");String name = sc.next();if(annimals.contains(name)){System.out.println("請輸入您要捐獻的寵物的名字");String name1 = sc.next();addName1(name,name1);}else {System.out.println("請輸入您要捐獻的寵物的名字");String name2 = sc.next();addName2(name,name2);}} }private String getname1(String typename) throws Exception {SAXReader reader = new SAXReader();// 解析xml文檔,得到document對象Document document = reader.read("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml");// 根據(jù)document對象獲取根節(jié)點Element root = document.getRootElement();Element element = root.element(typename);List <Element>list = element.elements();String names="";for (int i = 0; i < list.size(); i++) {names+=list.get(i).getText();if(i<list.size()-1)names+=",";}return names;}//捐獻的寵物不在animals中private void addName2(String name,String name1) throws Exception {SAXReader reader = new SAXReader();// 解析xml文檔,得到document對象Document document = reader.read("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml");// 根據(jù)document對象獲取根節(jié)點Element root = document.getRootElement();root.addElement(name).addElement("name").addText(name1);XMLWriter xmlWriter = new XMLWriter(new FileOutputStream("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml"), OutputFormat.createPrettyPrint());xmlWriter.write(document);xmlWriter.flush();XMLWriter xmlWriter2 = new XMLWriter(System.out, OutputFormat.createPrettyPrint());xmlWriter2.write(document);xmlWriter2.flush();}//捐獻的寵物在animals中private void addName1(String name,String name1) throws Exception {SAXReader reader = new SAXReader();// 解析xml文檔,得到document對象Document document = reader.read("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml");// 根據(jù)document對象獲取根節(jié)點Element root = document.getRootElement();Element element = root.element(name);element.addElement("name").addText(name1);XMLWriter xmlWriter = new XMLWriter(new FileOutputStream("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml"), OutputFormat.createPrettyPrint());xmlWriter.write(document);xmlWriter.flush();XMLWriter xmlWriter2 = new XMLWriter(System.out, OutputFormat.createPrettyPrint());xmlWriter2.write(document);xmlWriter2.flush();}//領養(yǎng)寵物private void removeName(String name,String name1) throws Exception {SAXReader reader = new SAXReader();// 解析xml文檔,得到document對象Document document = reader.read("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml");// 根據(jù)document對象獲取根節(jié)點Element root = document.getRootElement();Element element = root.element(name);List <Element>list = element.elements();for (int i = 0; i <list.size() ; i++) {if(list.get(i).getText().contains(name1))element.remove(list.get(i));}if(element.elements().size()==0)root.remove(element);XMLWriter xmlWriter = new XMLWriter(new FileOutputStream("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml"), OutputFormat.createPrettyPrint());xmlWriter.write(document);xmlWriter.flush();XMLWriter xmlWriter2 = new XMLWriter(System.out, OutputFormat.createPrettyPrint());xmlWriter2.write(document);xmlWriter2.flush();} //獲取寵物信息private String getAnnimals() throws Exception {SAXReader reader = new SAXReader();// 解析xml文檔,得到document對象Document document = reader.read("D:\\IdeaWork\\day22.java22\\src\\homeworke2\\pet\\pet.xml");// 根據(jù)document對象獲取根節(jié)點Element root = document.getRootElement();List<Element> animals = root.elements();String names="";for (int i = 0; i < animals.size(); i++) {names+=animals.get(i).getName();if(i<animals.size()-1)names+=",";}return names;}

該系統(tǒng)可以將路徑中的xml文件進行增加刪除查找等功能

總結

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