学生数据插入XML
发布时间:2020-12-16 05:17:24 所属栏目:百科 来源:网络整理
导读:需要导入dom4j包package aa;import java.io.FileOutputStream;import java.io.IOException;import java.util.Iterator;import java.util.Scanner;import java.util.Set;import java.util.TreeSet;import org.dom4j.Document;import org.dom4j.DocumentHelper
需要导入dom4j包 package aa; import java.io.FileOutputStream; import java.io.IOException; import java.util.Iterator; import java.util.Scanner; import java.util.Set; import java.util.TreeSet; import org.dom4j.Document; import org.dom4j.DocumentHelper; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.XMLWriter; import vo.Student; public class Lianxi { public static void main(String[] args) throws IOException { Scanner sc=new Scanner(System.in); Set set=new TreeSet(); while(true) { System.out.println("1.学员信息录入"); System.out.println("2.查询信息"); int oper=sc.nextInt(); if(oper==1){ //获取学员信息 System.out.println("请输入学员姓名: "); String name=sc.next(); System.out.println("请输入学员年龄: "); int age=sc.nextInt(); System.out.println("请输入学员班级: "); int banji=sc.nextInt(); Student stu=new Student(name,age,banji); set.add(stu);} if(oper==2){ System.out.println("等会实现。。"); } System.out.println("按1继续,其他键退出..."); oper=sc.nextInt(); if(oper!=1) { break; } } Document xml = DocumentHelper.createDocument(); //2.在xml文档创建根目录 Element root =xml.addElement("学员信息表"); //3.创建相应的子目录 Iterator it=set.iterator(); while(it.hasNext()){ Student value=(Student)it.next(); String banji="班级"+value.getBanji(); Element currentElement=root.element(banji); if(currentElement!=null){ Element stuE= currentElement.addElement("学生"); stuE.addElement("姓名").setText(value.getName()); stuE.addElement("年龄").setText(value.getAge()+""); }else{ currentElement=root.addElement(banji); Element stuE= currentElement.addElement("学生"); stuE.addElement("姓名").setText(value.getName()); stuE.addElement("年龄").setText(value.getAge()+""); } //4.指定当前xml文档使用的字符集 OutputFormat format = OutputFormat.createPrettyPrint(); format.setEncoding("utf-8"); //5.指明内存中的xml文档将要在硬盘上的位置 XMLWriter writer = new XMLWriter(new FileOutputStream("d://学员.xml"),format); //6.向硬盘传输内容 writer.write(xml); //7.close writer.close(); } } } package vo; public class Student implements Comparable { private String name; private int banji; private int age; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getBanji() { return banji; } public void setBanji(int banji) { this.banji = banji; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public Student(String name,int age,int banji2){ super(); this.name=name; this.banji=banji2; this.age=age; } @Override public int compareTo(Object o) { Student s2=(Student)o; if(s2.getBanji()<this.banji){ return 1; }else if(s2.getBanji()>this.banji) {return -1;} else if(s2.getBanji()==this.banji){ if(s2.age>this.age){return -1;} else if(s2.age<this.age){return 1;} else {return 0;} } return 1; } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |