本文实例为大家分享了java联系人管理系统毕业设计,供大家参考,具体内容如下
要求:
请使用XML保存数据,完成一个联系人管理系统。
用户必须经过认证登录后方可以使用系统。
注册、增加、删除、查看联系人功能。
分模块进行设计。
两层框架-用户交互层,Dao层。
其他支持层-数据封装层。
工具类-加密,工厂Bean。
开发步骤:
第一步:设计数据结构-XML。
第一步:设计数据结构-XML。
第三步:准备资源并编码实现。
第四步:运行测试。
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<? xml version = "1.0" encoding = "UTF-8" standalone = "no" ?>< contacts > < user name = "Jack" pwd = "1234" > < contact id = "707dede609dd4a2990f7cfa4cd5233f9" > < name >xiaoming</ name > < sex >male</ sex > < tel >123456</ tel ></ contact > < contact id = "80983802eaa6402d8bac8bb39e71c48f" > < name >12</ name > < sex >12</ sex > < tel >12</ tel > </ contact ></ user > < user name = "Rose" pwd = "4321" > < contact id = "eedb795b97194c3aaa9bacda7e2948e9" > < name >xiaoming</ name > < sex >female</ sex > < tel >123</ tel > </ contact ></ user > </ contacts > |
util
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package cn.hncu.contact.util; import java.util.UUID; public class IDGenerate { private IDGenerate(){ } public static String getID(){ // return UUID.randomUUID().toString(); return UUID.randomUUID().toString().replace( "-" , "" ); } } |
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package cn.hncu.contact.util; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Document; public class myDocumentFactory { private static final String FILE_NAME= "./xml/users.xml" ; private static Document dom= null ; static { DocumentBuilder db; try { db=DocumentBuilderFactory.newInstance().newDocumentBuilder(); dom=db.parse(FILE_NAME); } catch (Exception e) { throw new RuntimeException( "xml文档解析失败..." ,e); } } public static Document getDocument(){ return dom; } public static void save(){ try { Transformer tf=TransformerFactory.newInstance().newTransformer(); tf.transform( new DOMSource(dom), new StreamResult(FILE_NAME)); } catch (Exception e) { throw new RuntimeException( "xml文档存储失败..." , e); } // ConfigurationError:配置异常 } } |
dao
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package cn.hncu.contact.dao; import java.util.List; import java.util.Map; import org.w3c.dom.Element; public interface contactDAO { public abstract boolean login(String name,String pwd); public abstract List<Map<String, String>> queryAll(); public abstract Element add(String name,String sex,String tel); public abstract void reg(String name,String pwd); public Element delete(String id); //默认abstract public abstract Element change(String id, String name, String sex, String tel); } |
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package cn.hncu.contact.dao; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import cn.hncu.contact.util.IDGenerate; import cn.hncu.contact.util.myDocumentFactory; public class contactImpl implements contactDAO{ private Element currentUser; Document dom= null ; public contactImpl(){ } // private static String name=null; // private static String pwd=null; @Override // public boolean login(String name2, String pwd2) { public boolean login(String name, String pwd) { // name=name2; // pwd=pwd2; dom=myDocumentFactory.getDocument(); Element root=(Element) dom.getFirstChild(); NodeList nodelist=root.getElementsByTagName( "user" ); for ( int i= 0 ;i<nodelist.getLength();i++){ Element e=(Element) nodelist.item(i); if (e.getAttribute( "name" ).equalsIgnoreCase(name)&&e.getAttribute( "pwd" ).equalsIgnoreCase(pwd)){ currentUser=e; return true ; } } return false ; } @Override public List<Map<String, String>> queryAll() { List<Map<String, String>> list= new ArrayList<Map<String,String>>(); if (currentUser== null ){ return list ; } NodeList nodeList=currentUser.getElementsByTagName( "contact" ); for ( int i= 0 ;i<nodeList.getLength();i++){ Map<String, String> map= new HashMap<String, String>(); Element e=(Element) nodeList.item(i); String id=e.getAttribute( "id" ); map.put( "id" , id); String name=e.getElementsByTagName( "name" ).item( 0 ).getTextContent(); map.put( "name" , name); String sex=e.getElementsByTagName( "sex" ).item( 0 ).getTextContent(); map.put( "sex" , sex); String tel=e.getElementsByTagName( "tel" ).item( 0 ).getTextContent(); map.put( "tel" , tel); list.add(map); } return list; } @Override public Element add(String name,String sex,String tel) { Document dom=myDocumentFactory.getDocument(); Element eNewContact=dom.createElement( "contact" ); eNewContact.setAttribute( "id" , IDGenerate.getID()); Element nameNew=dom.createElement( "name" ); nameNew.setTextContent(name); eNewContact.appendChild(nameNew); Element sexNew=dom.createElement( "sex" ); sexNew.setTextContent(sex); eNewContact.appendChild(sexNew); Element telNew=dom.createElement( "tel" ); telNew.setTextContent(tel); eNewContact.appendChild(telNew); currentUser.appendChild(eNewContact); myDocumentFactory.save(); // login(name, pwd); return eNewContact; } public Element delete(String id) { NodeList nodeList=currentUser.getElementsByTagName( "contact" ); for ( int i= 0 ;i<nodeList.getLength();i++){ Element e=(Element) nodeList.item(i); if (e.getAttribute( "id" ).equals(id)){ currentUser.removeChild(e); //把节点从树中移除 myDocumentFactory.save(); // login(name, pwd); return e; } } return null ; } @Override public void reg(String name, String pwd) { Document dom=myDocumentFactory.getDocument(); Element userNew=dom.createElement( "user" ); userNew.setAttribute( "name" , name); userNew.setAttribute( "pwd" , pwd); dom.getFirstChild().appendChild(userNew); myDocumentFactory.save(); } @Override public Element change(String id, String name, String sex, String tel) { NodeList nodeList=currentUser.getElementsByTagName( "contact" ); for ( int i= 0 ;i<nodeList.getLength();i++){ Element e=(Element) nodeList.item(i); if (e.getAttribute( "id" ).equals(id)){ e.getElementsByTagName( "name" ).item( 0 ).setTextContent(name); e.getElementsByTagName( "sex" ).item( 0 ).setTextContent(sex); e.getElementsByTagName( "tel" ).item( 0 ).setTextContent(tel); myDocumentFactory.save(); // login(name, pwd); return e; } } return null ; } } |
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package cn.hncu.contact.dao; public class contactDAOFactory { private contactDAOFactory(){ } public static contactDAO getContactDAO(){ return new contactImpl(); } } |
cmd
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package cn.hncu.contact.cmd; import java.util.List; import java.util.Map; import java.util.Scanner; import org.w3c.dom.Element; import cn.hncu.contact.dao.contactDAO; import cn.hncu.contact.dao.contactDAOFactory; public class contanctAction { private contactDAO dao=contactDAOFactory.getContactDAO(); private Scanner sc= null ; private String delIds[]; public contanctAction(){ sc= new Scanner(System.in); while ( true ) { System.out.println( "1:登录" ); System.out.println( "2:注册" ); System.out.println( "0:退出" ); String op=sc.nextLine(); if ( "1" .equals(op)) { Login(); } else if ( "2" .equals(op)) { Reg(); } else { // System.exit(0); break ; } } } private void Reg() { System.out.println( "请输入用户名:" ); String name=sc.nextLine(); System.out.println( "请输入用户密码:" ); String pwd=sc.nextLine(); System.out.println( "请确认用户密码:" ); String pwd2=sc.nextLine(); if (pwd.equals(pwd2)){ dao.reg(name,pwd); } else { System.out.println( "两次密码输入不一致,请重新注册" ); } } private void Login() { System.out.println( "请输入用户名:" ); String name=sc.nextLine(); System.out.println( "请输入用户密码:" ); String pwd=sc.nextLine(); boolean boo=dao.login(name, pwd); if (boo){ System.out.println( "登录成功..." ); operation(); } else { System.out.println( "denglushibai" ); } } private void operation() { List<Map<String, String>> list = dao.queryAll(); delIds= new String[list.size()]; int i= 0 ; for (Map<String, String> map : list) { String id=map.get( "id" ); delIds[i++]=id; } // while (true) { //因为共用同一棵dom树,所以每次增删改查之后,还是原来那棵dom树. //而while内的操作都是对之前的操作,所以要退出到上一阶段重新登陆,获取更新之后的dom树 System.out.println( "1:显示联系人" ); System.out.println( "2:添加联系人" ); System.out.println( "3:删除联系人" ); System.out.println( "4:修改联系人" ); System.out.println( "0:退出" ); String sel = sc.nextLine(); if ( "1" .equals(sel)) { System.out.println( "序号\t姓名\t性别\t电话" ); System.out.println( "------------------------------" ); int j = 1 ; for (Map<String, String> map : list) { String name = map.get( "name" ); String sex = map.get( "sex" ); String tel = map.get( "tel" ); System.out.println((j++) + "\t" + name + "\t" + sex + "\t" + tel); } } else if ( "2" .equals(sel)) { addContact(); } else if ( "3" .equals(sel)) { delContact(); } else if ( "4" .equals(sel)) { changeContact(); } else if ( "0" .equals(sel)) { return ; // break; } // } operation(); } private void changeContact() { System.out.println( "请输入要修改的联系人的序号:" ); int num=sc.nextInt(); sc.nextLine(); //吸掉换行符1 System.out.println( "请输入要修改的联系人的姓名:" ); String name=sc.nextLine(); System.out.println( "请输入要修改的联系人的姓别:" ); String sex=sc.nextLine(); System.out.println( "请输入要修改的联系人的电话:" ); String tel=sc.nextLine(); Element e=dao.change(delIds[num- 1 ],name,sex,tel); if (e!= null ){ System.out.println(num+ "号联系人更新之后:姓名:" +e.getElementsByTagName( "name" ).item( 0 ).getTextContent() + "性别:" +e.getElementsByTagName( "sex" ).item( 0 ).getTextContent() + "电话号码:" +e.getElementsByTagName( "tel" ).item( 0 ).getTextContent()); } else { System.out.println( "修改失败..." ); } } private void delContact() { System.out.println( "请输入删除的联系人序号:" ); int num=sc.nextInt(); sc.nextLine(); //吸掉换行符 Element e=dao.delete(delIds[num- 1 ]); if (e== null ){ System.out.println( "删除失败,无此联系人" ); } else { System.out.println( "删除联系人:" +e.getElementsByTagName( "name" ).item( 0 ).getTextContent()+ "成功..." ); } } private void addContact() { System.out.println( "请输入联系人信息:" ); System.out.println( "姓名:" ); String name=sc.nextLine(); System.out.println( "姓别:" ); String sex=sc.nextLine(); System.out.println( "电话:" ); String tel=sc.nextLine(); Element e=dao.add( name,sex, tel); System.out.println( "添加联系人" +e.getElementsByTagName( "name" ).item( 0 ).getTextContent()+ "成功..." ); } public static void main(String[] args) { new contanctAction(); } } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我。