MonthView5.java
import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.Calendar; import java.sql.*; public class MonthView5 extends HttpServlet{ protected Connection conn = null; public void init() throws ServletException{ String url = "jdbc:mysql://localhost/servletschedule"; String user = "scheduleuser"; String password = "schedulepass"; try { Class.forName("com.mysql.jdbc.Driver").newInstance(); conn = DriverManager.getConnection(url, user, password); }catch (ClassNotFoundException e){ log("ClassNotFoundException:" + e.getMessage()); }catch (SQLException e){ log("SQLException:" + e.getMessage()); }catch (Exception e){ log("Exception:" + e.getMessage()); } } public void destory(){ try{ if (conn != null){ conn.close(); } }catch (SQLException e){ log("SQLException:" + e.getMessage()); } } public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException{ res.setContentType("text/html;charset=Shift_Jis"); PrintWriter out = res.getWriter(); int[] calendarDay; int count; int year; int month; int day = 1; calendarDay = new int[42]; /* 最大で7日×6週 */ count = 0; String param = req.getParameter("YEAR"); if (param == null || param.length() == 0){ year = -999; }else{ try{ year = Integer.parseInt(param); }catch (NumberFormatException e){ year = -999; } } param = req.getParameter("MONTH"); if (param == null || param.length() == 0){ month = -999; }else{ try{ month = Integer.parseInt(param); }catch (NumberFormatException e){ month = -999; } } /* パラメータが指定されていない場合は本日の日付を設定 */ if (year == -999 || month == -999){ Calendar calendar = Calendar.getInstance(); year = calendar.get(Calendar.YEAR); month = calendar.get(Calendar.MONTH); day = calendar.get(Calendar.DATE); }else{ if (month == 12){ month = 0; year++; } if (month == -1){ month = 11; year--; } } StringBuffer sb = new StringBuffer(); sb.append("<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.0.1//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">"); sb.append("<html lang=\"ja\">"); sb.append("<head>"); sb.append("<meta http-equiv=\"Content-Type\" Content=\"text/html;charset=Shift_JIS\">"); sb.append("<title>スケジュール管理</title>"); sb.append("<style>"); sb.append("table{border:1px solid #a9a9a9;width:90%;padding:0px;margin:0px;border-collapse:collapse;}"); sb.append("td{width:12%;border-top:1px solid #a9a9a9;border-left:1px solid #a9a9a9;vertical-align:top;margin:0px;padding:2px;}"); sb.append("td.week{background-color:#f0f8ff;text-align:center;}"); sb.append("td.day{background-color:#f5f5f5;text-align:right;font-size:0.75em;}"); sb.append("td.otherday{background-color:#f5f5f5;color:#d3d3d3;text-align:right;font-size:0.75em;}"); sb.append("td.sche{background-color:#fffffff;text-align:left;height:80px;}"); sb.append("img{border:0px;}"); sb.append("span.small{font-size:0.75em;}"); sb.append("</style>"); sb.append("</head>"); sb.append("<body>"); /* 日付データを配列に格納 */ count = setDateArray(year, month, day, calendarDay, count); /* 年月のリンク作成 */ sb.append(createMonthLink(year, month)); sb.append("<table>"); sb.append("<tr><td class=\"week\">日</td><td class=\"week\">月</td><td class=\"week\">火</td><td class=\"week\">水</td><td class=\"week\">木</td><td class=\"week\">金</td><td class=\"week\">土</td></tr>"); int weekCount = count / 7; for (int i = 0 ; i < weekCount ; i++){ /* スケジュールの日付画面を作成する */ sb.append("<tr>"); for (int j = i * 7 ; j < i * 7 + 7 ; j++){ if (calendarDay[j] > 35){ sb.append("<td class=\"otherday\">"); sb.append(calendarDay[j] - 35); }else{ sb.append("<td class=\"day\">"); sb.append(calendarDay[j]); } sb.append("</td>"); } sb.append("</tr>"); /* カレンダーのスケジュール登録画面を作成する */ sb.append(createScheduleStr(year, month, i * 7, calendarDay)); } sb.append("</table>"); sb.append("</body>"); sb.append("</html>"); out.println(new String(sb)); } /* スケジュール登録へのリンクを設定する */ protected String createScheduleStr(int year, int month, int startDayNo, int[] calendarDay){ StringBuffer sb = new StringBuffer(); sb.append("<tr>"); for (int i = startDayNo ; i < startDayNo + 7 ; i++){ if (calendarDay[i] > 35){ /* 前月及び翌月の箇所にはアイコンは表示しない */ sb.append("<td class=\"sche\"></td>"); }else{ sb.append("<td class=\"sche\">"); sb.append("<a href=\"/schedule/NewSchedule"); /* パラメータの作成 */ sb.append("?YEAR="); sb.append(year); sb.append("&MONTH="); sb.append(month); sb.append("&DAY="); sb.append(calendarDay[i]); sb.append("\">"); sb.append("<img src=\"./img/memo.png\" width=\"14\" height=\"16\">"); sb.append("</a><br>"); /* スケジュールの表示 */ sb.append("<span class=\"small\">"); try { String sql = "SELECT * FROM schedule WHERE userid = ? and scheduledate = ? ORDER BY starttime"; PreparedStatement pstmt = conn.prepareStatement(sql); String startDateStr = year + "-" + (month + 1) + "-" + calendarDay[i]; pstmt.setInt(1, 1); pstmt.setString(2, startDateStr); ResultSet rs = pstmt.executeQuery(); while(rs.next()){ String starttime = rs.getString("starttime"); String endtime = rs.getString("endtime"); String schedule = rs.getString("schedule"); if (starttime == null || endtime == null){ sb.append("* " + schedule + "<br>"); }else{ String startTimeStr = starttime.substring(0, 5); String endTimeStr = endtime.substring(0, 5); sb.append(startTimeStr + "-" + endTimeStr + " " + schedule + "<br>"); } } rs.close(); pstmt.close(); }catch (SQLException e){ log("SQLException:" + e.getMessage()); } sb.append("</span>"); sb.append("</td>"); } sb.append("</td>"); } sb.append("</tr>"); return (new String(sb)); } protected int setDateArray(int year, int month, int day, int[] calendarDay, int count){ Calendar calendar = Calendar.getInstance(); /* 今月が何曜日から開始されているか確認する */ calendar.set(year, month, 1); int startWeek = calendar.get(Calendar.DAY_OF_WEEK); System.out.println("今月の曜日は" + startWeek + "から"); /* 先月が何日までだったかを確認する */ calendar.set(year, month, 0); int beforeMonthlastDay = calendar.get(Calendar.DATE); System.out.println("先月は" + beforeMonthlastDay + "日まで"); /* 今月が何日までかを確認する */ calendar.set(year, month + 1, 0); int thisMonthlastDay = calendar.get(Calendar.DATE); System.out.println("今月は" + thisMonthlastDay + "日まで\r\n"); /* 先月分の日付を格納する */ for (int i = startWeek - 2 ; i >= 0 ; i--){ calendarDay[count++] = beforeMonthlastDay - i + 35; } /* 今月分の日付を格納する */ for (int i = 1 ; i <= thisMonthlastDay ; i++){ calendarDay[count++] = i; } /* 翌月分の日付を格納する */ int nextMonthDay = 1; while (count % 7 != 0){ calendarDay[count++] = 35 + nextMonthDay++; } return count; } protected String createMonthLink(int year, int month){ StringBuffer sb = new StringBuffer(); sb.append("<p>"); sb.append("<a href=\"/schedule/MonthView?YEAR="); sb.append(year); sb.append("&MONTH="); sb.append(month - 1); sb.append("\"><span class=\"small\">前月</span></a> "); sb.append(year); sb.append("年"); sb.append(month + 1); sb.append("月 "); sb.append("<a href=\"/schedule/MonthView?YEAR="); sb.append(year); sb.append("&MONTH="); sb.append(month + 1); sb.append("\"><span class=\"small\">翌月</span></a>"); sb.append("</p>"); return (new String(sb)); } }
( Written by Tatsuo Ikura )