公交站点信息的增删改查操作

package xml课程设计; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.UnsupportedEncodingException; import java.util.Iterator; import java.util.List; import java.util.Scanner; import org.dom4j.Attribute; 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; public class Ways { private String namesString; private String start_timeString; private String end_timeString; String strRegex1 = "[0-9]{1,3}[\u4e00-\u9fa5]";//定义公交车名命名规则 String strRegex2 = "([0-1][0-9]|2[0-3]):([0-5][0-9])";//定义时间规则 String strRegex3 = "[\u4e00-\u9fa5]{2,6}";//定义车站命名规则 public String getNamesString() { return namesString; } public void setNamesString(String namesString) { this.namesString = namesString; } public String getStart_timeString() { return start_timeString; } public void setStart_timeString(String start_timeString) { this.start_timeString = start_timeString; } public String getEnd_timeString() { return end_timeString; } public void setEnd_timeString(String end_timeString) { this.end_timeString = end_timeString; } /** * 遍历所有公交线路的站点信息 * * @param node */ public void checkxml(Element node) { System.out.println(node.getName() + ":"); List<Attribute> bookAttr = node.attributes();// 获取根元素的属性名及属性值 for (Attribute attr : bookAttr) { System.out.println(attr.getName() + ":" + attr.getValue());// 打印属性值 } int count = 0; Iterator itt = node.elementIterator(); while (itt.hasNext()) { Element book = (Element) itt.next(); count++; // 获取book的属性名以及 属性值 List<Attribute> bookAttrs = book.attributes(); for (Attribute attr : bookAttrs) { System.out.println(attr.getName() + ":" + attr.getValue()); } Iterator<Element> it = book.elementIterator(); // 遍历 while (it.hasNext()) { // 获取某个子节点对象 Element e = (Element) it.next(); // 对子节点进行遍历 System.out.println(e.getName() + ":" + e.getStringValue()); } System.out.println("一共遍历" + count + "条信息"); System.out.println(); } } /** * 查找一条公交线路的站点信息 * * @param name * @param node * @return */ public boolean checkone(String name, Element node) { boolean flag = false; Iterator itt = node.elementIterator(); while (itt.hasNext()) { Element book = (Element) itt.next(); // 获取book的属性名以及 属性值 List<Attribute> bookAttrs = book.attributes(); for (Attribute attr : bookAttrs) { if (attr.getValue().equals(name)) { // 输出所符合的节点属性信息 Iterator its = book.attributeIterator(); while (its.hasNext()) { Attribute attribute = (Attribute) its.next(); System.out.println(attribute.getName() + ":" + attribute.getValue()); } flag = true; Iterator<Element> it = book.elementIterator(); // 输出这个节点的所有子节点信息 while (it.hasNext()) { // 获取某个子节点对象 Element e = (Element) it.next(); // 对子节点进行遍历 System.out.println(e.getName() + ":" + e.getStringValue()); } } } } System.out.println(); return flag; } /** * 删除一条公交线路的站点信息 * * @param nameString * @param node * @param document * @return * @throws IOException */ public boolean deletexml(String nameString, Element node, Document document) throws IOException { boolean flag = false; Iterator itt = node.elementIterator(); while (itt.hasNext()) { Element book = (Element) itt.next(); // 获取book的属性名以及 属性值 List<Attribute> bookAttrs = book.attributes(); for (Attribute attr : bookAttrs) { if (attr.getValue().equals(nameString)) { node.remove(book); flag = true; // 排版缩进的格式 OutputFormat format = OutputFormat.createPrettyPrint(); // 设置编码 format.setEncoding("gb2312"); // 创建XMLWriter对象,指定了写出文件及编码格式 // XMLWriter writer = new XMLWriter(new FileWriter(new // File("src//a.xml")),format); XMLWriter writer = null; try { writer = new XMLWriter( new OutputStreamWriter(new FileOutputStream(new File("src/bbb.xml")), "gb2312"), format); } catch (UnsupportedEncodingException e1) { // TODO 自动生成的 catch 块 e1.printStackTrace(); } catch (FileNotFoundException e1) { // TODO 自动生成的 catch 块 e1.printStackTrace(); } // 写入 try { writer.write(document); } catch (IOException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } // 立即写入 writer.flush(); // 关闭操作 writer.close(); } } } System.out.println(); return flag; } /** * 添加一条公交线路的站点信息 * * @param node * @param document * @throws IOException */ public void insertxml(Element node, Document document) throws IOException { boolean flag2 = true; boolean flag3 = true; Element newelElement = node.addElement("线路"); System.out.println("公交车名："); Scanner sc = new Scanner(System.in); String string1 = sc.nextLine(); Iterator itt = node.elementIterator(); while (itt.hasNext()) { Element book = (Element) itt.next(); // 获取book的属性名以及 属性值 List<Attribute> bookAttrs = book.attributes(); for (Attribute attr : bookAttrs) { if (attr.getValue().equals(string1)) { flag3 = false; } } } if (!flag3) { System.out.println("该车已有信息！"); } else if (string1.matches(strRegex1)) { newelElement.addAttribute("公交车", string1); System.out.println("开始时间："); String string2 = sc.next(); if (string2.matches(strRegex2)) { newelElement.addAttribute("开始时间", string2); System.out.println("结束时间："); String string3 = sc.next(); if (string3.matches(strRegex2)) { newelElement.addAttribute("结束时间", string3); System.out.println("输入添加站点个数："); int a; while (true) { Scanner input = new Scanner(System.in); if (!input.hasNextInt()) { System.out.println("输入数据有误,请重新输入一个整数"); } else { a = input.nextInt(); break; } } String kong = sc.nextLine(); for (int i = 0; i < a; i++) { System.out.println("输入站点信息："); String string = sc.nextLine(); if (string.matches(strRegex3)) { Element e = newelElement.addElement("站点"); e.setText(string); // 排版缩进的格式 } else { System.out.println("输入的站点信息有误！(格式为：2-6个汉字)"); flag2 = false; break; } } } else { System.out.println("输入结束时间格式有误！(格式为：xx:xx)"); flag2 = false; } } else { System.out.println("输入开始时间格式有误！(格式为：xx:xx)"); flag2 = false; } } else { System.out.println("输入公交线路有误！(格式为：xxx路)"); flag2 = false; } if (flag2 && flag3) { OutputFormat format = OutputFormat.createPrettyPrint(); // 设置编码 format.setEncoding("gb2312"); XMLWriter writer = null; writer = new XMLWriter(new OutputStreamWriter(new FileOutputStream(new File("src/bbb.xml")), "gb2312"), format); // 写入 writer.write(document); // 立即写入 writer.flush(); // 关闭操作 writer.close(); System.out.println("添加成功！"); System.out.println(); } } /** * 修改一条公交线路的发车时间 * * @param nameString * @param node * @param document * @return * @throws IOException */ public boolean