ScheduleInsert2.java

ScheduleInsert2.java

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;

public class ScheduleInsert2 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 doPost(HttpServletRequest req, HttpServletResponse res)
        throws ServletException, IOException{

        req.setCharacterEncoding("Shift-JIS");
        res.setContentType("text/html;charset=Shift_Jis");
        PrintWriter out = res.getWriter();

        int year;
        int month;
        int day;
        int shour;
        int sminute;
        int ehour;
        int eminute;
        String plan;
        String memo;

        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;
            }
        }

        param = req.getParameter("DAY");
        if (param == null || param.length() == 0){
            day = -999;
        }else{
            try{
                day = Integer.parseInt(param);
            }catch (NumberFormatException e){
                day = -999;
            }
        }

        param = req.getParameter("SHOUR");
        if (param == null || param.length() == 0){
            shour = -999;
        }else{
            try{
                shour = Integer.parseInt(param);
            }catch (NumberFormatException e){
                shour = -999;
            }
        }

        param = req.getParameter("SMINUTE");
        if (param == null || param.length() == 0){
            sminute = -999;
        }else{
            try{
                sminute = Integer.parseInt(param);
            }catch (NumberFormatException e){
                sminute = -999;
            }
        }

        param = req.getParameter("EHOUR");
        if (param == null || param.length() == 0){
            ehour = -999;
        }else{
            try{
                ehour = Integer.parseInt(param);
            }catch (NumberFormatException e){
                ehour = -999;
            }
        }

        param = req.getParameter("EMINUTE");
        if (param == null || param.length() == 0){
            eminute = -999;
        }else{
            try{
                eminute = Integer.parseInt(param);
            }catch (NumberFormatException e){
                eminute = -999;
            }
        }

        param = req.getParameter("PLAN");
        if (param == null || param.length() == 0){
            plan = "";
        }else{
            try{
                plan = param;
            }catch (NumberFormatException e){
                plan = "";
            }
        }

        param = req.getParameter("MEMO");
        if (param == null || param.length() == 0){
            memo = "";
        }else{
            try{
                memo = param;
            }catch (NumberFormatException e){
                memo = "";
            }
        }

        /* 日付が不正な値で来た場合はパラメータ無しで「MonthView」へリダイレクトする */
        if (year == -999 || month == -999 || day == -999){
            res.sendRedirect("/schedule/MonthView");
        }
        String dateStr = year + "-" + month + "-" + day;

        String startTimeStr = shour + ":" + sminute + ":00";
        String endTimeStr = ehour + ":" + eminute + ":00";
        /* 日付が指定されていない場合は、開始及び終了時刻をNULLとして登録する */
        if (shour == -999 || sminute == -999 || ehour == -999 || eminute == -999){
            startTimeStr = null;
            endTimeStr = null;
        }

        try {
            String sql = "insert into schedule (userid, scheduledate, starttime, endtime, schedule, schedulememo) values (?, ?, ?, ?, ?, ?)";
            PreparedStatement pstmt = conn.prepareStatement(sql);

            pstmt.setInt(1, 1);
            pstmt.setString(2, dateStr);
            pstmt.setString(3, startTimeStr);
            pstmt.setString(4, endTimeStr);
            pstmt.setString(5, plan);
            pstmt.setString(6, memo);
            int num = pstmt.executeUpdate();

            pstmt.close();

        }catch (SQLException e){
            out.println("SQLException:" + e.getMessage());
        }

        StringBuffer sb = new StringBuffer();
        sb.append("/schedule/MonthView");
        sb.append("?YEAR=");
        sb.append(year);
        sb.append("&MONTH=");
        sb.append(month - 1);
        res.sendRedirect(new String(sb));
    }
}

( Written by Tatsuo Ikura )

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著者 / TATSUO IKURA

初心者~中級者の方を対象としたプログラミング方法や開発環境の構築の解説を行うサイトの運営を行っています。