package com.game;
import java.io.IOException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
public class Users {
Document document; //DOM解析XML文件后得到的Document
NodeList userlist; //所有user的列表
//初始化并解析成DOM树
Users(){
DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db=dbf.newDocumentBuilder();
document=db.parse("data/users.xml");
userlist=document.getElementsByTagName("user");
}catch(ParserConfigurationException | SAXException | IOException e) {
e.printStackTrace();
}
}
//更改密码
public void modifyPass(int id,String pass) {
pass=MD5.md5(MD5.salt+pass);
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(Integer.parseInt(user.getChildNodes().item(0).getTextContent())==id)
{
user.getChildNodes().item(2).setTextContent(pass);
break;
}
}
TransformerFactory transformerFactory=TransformerFactory.newInstance();
try {
Transformer transformer=transformerFactory.newTransformer();
transformer.transform(new DOMSource(document), new StreamResult("data/users.xml"));
} catch (TransformerException e) {
e.printStackTrace();
}
}
//判断账户是否存在
public boolean isExist(String account) {
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(account.equals(user.getChildNodes().item(1).getTextContent()))
return true;
}
return false;
}
//验证安全问题是否正确
public boolean authenticationInformation(String account,String question,String answer) {
answer=MD5.md5(MD5.salt+answer);
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(account.equals(user.getChildNodes().item(1).getTextContent()) && question.equals(user.getChildNodes().item(3).getTextContent()) && answer.equals(user.getChildNodes().item(4).getTextContent()))
return true;
}
return false;
}
//验证账号密码
public int authentication(String account,String pass) {
pass=MD5.md5(MD5.salt+pass);
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(account.equals(user.getChildNodes().item(1).getTextContent()) && pass.equals(user.getChildNodes().item(2).getTextContent()))
return Integer.valueOf(user.getChildNodes().item(0).getTextContent());
}
return 0;
}
//通过账号取id
public int getId(String account) {
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(account.equals(user.getChildNodes().item(1).getTextContent()))
return Integer.parseInt(user.getChildNodes().item(0).getTextContent());
}
return 0;
}
//通过id取最高分
public int getMaxScore(int id) {
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(Integer.parseInt(user.getChildNodes().item(0).getTextContent())==id)
return Integer.parseInt(user.getChildNodes().item(5).getTextContent());
}
return 0;
}
//通过id取游戏局数
public int getTime(int id) {
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(Integer.parseInt(user.getChildNodes().item(0).getTextContent())==id)
return Integer.parseInt(user.getChildNodes().item(6).getTextContent());
}
return 0;
}
//通过id取账号
public String getAccount(int id) {
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(Integer.parseInt(user.getChildNodes().item(0).getTextContent())==id)
return user.getChildNodes().item(1).getTextContent();
}
return "";
}
//取用户数量
public int getUserCount() {
return userlist.getLength();
}
//更改最高分和局数
public void modifyMaxScoreAndTime(int id,int maxscore,int time) {
for(int i=0;i<userlist.getLength();i++) {
Node user=userlist.item(i);
if(Integer.parseInt(user.getChildNodes().item(0).getTextContent())==id)
{
user.getChildNodes().item(5).setTextContent(String.valueOf(maxscore));
user.getChildNodes().item(6).setTextContent(String.valueOf(time));
break;
}
}
TransformerFactory transformerFactory=TransformerFactory.newInstance();
try {
Transformer transformer=transformerFactory.newTransformer();
transformer.transform(new DOMSource(document), new StreamResult("data/users.xml"));
} catch (TransformerException e) {
e.printStackTrace();
}
}
//添加用户
public void addUser(int id,String account,String pass,String question,String answer,int maxscore,int time) {
answer=MD5.md5(MD5.salt+answer);
pass=MD5.md5(MD5.salt+pass);
Element element=document.createElement("user");
Element child_element=document.createElement("id");
child_element.appendChild(document.createTextNode(String.valueOf(id)));
element.appendChild(child_element);
child_element=document.createElement("account");
child_element.appendChild(document.createTextNode(account));
element.appendChild(child_element);
child_element=document.createElement("pass");
child_element.appendChild(document.createTextNode(pass));
element.appendChild(child_element);
child_element=document.createElement("question");
child_element.appendChild(document.createTextNode(question));
element.appendChild(child_element);
child_element=document.createElement("answer");
child_element.appendChild(document.createTextNode(answer));
element.appendChild(child_element);
child_element=document.createElement("maxscore");
child_element.appendChild(document.createTextNode(String.valueOf(maxscore)));
element.appendChild(child_element);
child_element=document.createElement("time");
child_element.appendChild(document.createTextNode(String.valueOf(time)));
element.appendChild(child_element);
document.getElementsByTagName("users").item(0).appendChild(element);
TransformerFactory transformerFactory=TransformerFactory.newInstance();
try {
Transformer transformer=transformerFactory.newTransformer();
transformer.transform(new DOMSource(document), new StreamResult("data/users.xml"));
} catch (TransformerException e) {
e.printStackTrace();
}
}
}
class MD5 {
public static String salt="asdfji1SDxx)(^5@!*&^>?|00xxSAD1x";
public static String md5(String plainText) {
byte[] secretBytes = null;
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(plainText.getBytes());
secretBytes = md.digest();
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException("没有md5这个算法！");
}
String md5code = new BigInteger(1, secretBytes).toString(16);
for (int i = 0; i < 32 - md5code.length(); i++) {
md5code = "0" + md5code;
}
return md5code;
}
}
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