質問編集履歴

ソースコードの追加

2019/01/02 09:00

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x0707x

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test CHANGED Viewed

@@ -42,6 +42,412 @@
+### ソースコード
+以下が、今回で使うファイルのソースコードです。
+- GachaServlet.java
+```
+import java.io.*;
+import java.util.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import gacha.*;
+import java.util.Random;
+import java.sql.*;
+public class GachaServlet extends HttpServlet {
+  private static String DB_NAME = "gacha_db";
+  private static String DB_USER = "root";
+  private static String DB_PASS = "root";
+  private static String LOGIN_JSP = "WEB-INF/Login.jsp";
+  private static String START_JSP = "WEB-INF/Start.jsp";
+  private static String MISS_JSP = "WEB-INF/Miss.jsp";
+  private static String HIT_JSP = "WEB-INF/Hit.jsp";
+  private static String LOG_JSP = "WEB-INF/log.jsp";
+  private static String RANKING_JSP = "WEB-INF/ranking.jsp";
+  public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
+    doProcess(req, res);
+  }
+  public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
+    doProcess(req, res);
+  }
+  protected void doProcess(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
+    String nextView = "";
+    DatabaseConnector dc = null;
+    UserManager um = null;
+    RankingManager rm = null;
+    Random r = new Random();
+    int N = r.nextInt(100);
+    try {
+      dc = new DatabaseConnector(DB_NAME, DB_USER, DB_PASS);
+      dc.openConnection();
+      um = new UserManager(dc);
+      rm = new RankingManager(dc);
+      req.setCharacterEncoding("UTF-8");
+      res.setContentType("text/html; charset=UTF-8");
+      PrintWriter out = res.getWriter();
+      String action = req.getParameter("action");
+      if(action == null) {
+      action = "";
+    }
+    if(action.equals("") || action.equals("loginPage")) {
+	nextView = LOGIN_JSP;
+    } else if(action.equals("login")) {
+      if(login(um, req)) {
+        nextView = START_JSP;
+      } else {
+        nextView = LOGIN_JSP;
+      }
+    } else if(action.equals("logout")) {
+      nextView = logout(req);
+    } else if(action.equals("registration")) {
+      nextView = registration(um, req);
+    } else if(action.equals("gacha_result")) {
+	if(N >= 0 && 95 > N){
+	    nextView = miss(req);
+	} else {
+	Connection con=null; Statement st=null;
+	String login="root"; String passwd="root";
+	ResultSet rs = null;
+	nextView = hit(req, rm);
+	}
+    } else if(action.equals("start")) {
+	nextView = START_JSP;
+    } else if(action.equals("log")) {
+	nextView = LOG_JSP;
+    } else if(action.equals("log_reset")) {
+	Connection con=null; Statement st=null;
+	String login="root"; String passwd="root";
+	ResultSet rs = null;
+	try {
+	    Class.forName("com.mysql.jdbc.Driver");
+	    String url = "jdbc:mysql://localhost/gacha_db" + "?useUnicode=true&characterEncoding=UTF-8" + "&autoReconnect=true";
+	    con = DriverManager.getConnection(url, login, passwd);
+	    st = con.createStatement();
+	    String sql = "truncate table log_tbl";
+	    rs = st.executeQuery(sql);
+	} catch (Exception e) {
+	} finally {
+	    try {
+		rs.close();
+		con.close();
+		st.close();
+	    } catch (Exception e) {
+	    }
+	}
+	nextView = LOG_JSP;
+    } else if(action.equals("ranking")) {
+	nextView = RANKING_JSP;//showRanking(rm, req);
+    }
+    if(nextView.equals("")) {
+      req.setAttribute("message", "不正なアクションが要求されました(" + req.getParameter("action") + ")");
+      nextView = LOGIN_JSP;
+    }
+    dc.closeConnetion();
+  } catch(Exception e) {
+    e.printStackTrace();
+    req.setAttribute("message", "例外が発生しました:" + e.toString());
+    nextView = LOGIN_JSP;
+  } finally {
+    req.getRequestDispatcher(nextView).forward(req, res);
+  }
+}
+private boolean login(UserManager um, HttpServletRequest req) throws Exception {
+  String userName = req.getParameter("uname");
+  String password = req.getParameter("pass");
+  if(!isValid(userName) || !isValid(password)) {
+    req.setAttribute("message", "記入漏れがあります");
+    return false;
+  } else if(um.authenticate(userName, password) == false) {
+    req.setAttribute("message", "ユーザ名またはパスワードが違います");
+    return false;
+  } else {
+    HttpSession session = req.getSession(true);
+    int add = 0;
+    session.setAttribute("userName", userName);
+    session.setAttribute("add", add);
+    req.setAttribute("message", "認証に成功しました");
+  }
+  return true;
+}
+  private String registration(UserManager um, HttpServletRequest req) throws Exception {
+    String userName = req.getParameter("uname");
+    String password = req.getParameter("pass");
+    String password2 = req.getParameter("pass2");
+    if(!isValid(userName) || !isValid(password) || !isValid(password2)) {
+      req.setAttribute("message", "記入漏れがあります");
+    } else if(!password.equals(password2)) {
+      req.setAttribute("message", "パスワードが確認用と一致しません");
+    } else if(um.registration(userName, password)) {
+      req.setAttribute("message", "登録に成功しました");
+    } else {
+      req.setAttribute("message", "すでに登録されています");
+    }
+    return LOGIN_JSP;
+  }
+  private String logout(HttpServletRequest req) {
+    HttpSession session = req.getSession(false);
+    if(session != null) {
+	session.invalidate();
+      req.setAttribute("message", "ログアウトしました");
+    }
+    return LOGIN_JSP;
+  }
+    private String miss(HttpServletRequest req){
+	HttpSession session = req.getSession(true);
+	int add = (Integer)session.getAttribute("add");
+	add += 100;
+	session.setAttribute("add", add);
+	return MISS_JSP;
+    }
+    private String hit(HttpServletRequest req, RankingManager rm) {
+	HttpSession session = req.getSession(true);
+	int add = (Integer)session.getAttribute("add");
+	add += 100;
+	session.setAttribute("add", add);
+	int MONEY = add;
+	String UNAME = (String)session.getAttribute("userName");
+	rm.RankingSet(MONEY, UNAME);
+	session.setAttribute("add", 0);
+	return HIT_JSP;
+    }
+  protected boolean isValid(String str) {
+    if(str != null && !str.equals("")) {
+      return true;
+    } else {
+      return false;
+    }
+  }
+}
+```
 ### 試したこと
 今回、環境を整えるにあたり、行ったこと、確認したことを書きます。