Question

我正在向数据库中添加信息，并且当我想在PreparedStatement（stmt）上设置时间戳（d2）时，日期的小时数将减少2小时。查看代码和输出：

    Connection con = null;
    PreparedStatement stmt = null;
    try {
            con = ds.getConnection();
            stmt = con.prepareStatement("INSERT INTO "+machines.get(0)+ "("+Information.variables.get(0)+","+Information.variables.get(1)+","+Information.variables.get(2)+
                    ","+Information.variables.get(3)+","+Information.variables.get(4)+","+Information.variables.get(5)+","+Information.variables.get(6)+","+Information.variables.get(7)+","+Information.variables.get(8)+
                    ","+Information.variables.get(9)+","+Information.variables.get(10)+","+Information.variables.get(11)+") VALUES ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");

            String s = info.Data();
            Date d = transformStringToDate(s);
            System.out.println(d);
            java.sql.Timestamp d2 = new java.sql.Timestamp(d.getTime());
            stmt.setTimestamp(1, d2);
            System.out.println(d2);

            stmt.setDouble(2, info.Pes_programat());
            stmt.setDouble(3, info.Pes_real());
            stmt.setDouble(4, info.Pes_maxim());
            stmt.setDouble(5, info.Pes_minim());
            stmt.setInt(6, info.Marxa());
            stmt.setDouble(7, info.Incidencia());
            stmt.setDouble(8, info.Contador_de_coixins());
            stmt.setDouble(9, info.Producte());
            stmt.setDouble(10, info.Fibra());
            stmt.setDouble(11, info.Pes_funda());
            stmt.setDouble(12, info.Mides_funda());
            System.out.println(stmt);
            stmt.execute();

    } catch (SQLException e) {
            e.printStackTrace();
    }finally{
            try {
                    if(stmt != null) stmt.close();
                    if(con != null) con.close();
            } catch (SQLException e) {
                    e.printStackTrace();
            }
    }
}

这是System.out.println（）的输出：

2018年6月15日星期五18:55:53 CEST

2018-06-15 18：55：53.0

com.mysql.cj.jdbc.ClientPreparedStatement：INSERT INTO m1（数据，Pes_programat，Pes_real，Pes_maxim，Pes_minim，Marxa，Incidencia，Contador_de_coixins，Producte，Fibra，Pes_funda，Mides_funda）-15S（'2018 ：55：53.0'，211.0，11.98，2.15，1.85，1，0.0，151.0，1.0，2.0，50.0，190.0）

第一个日期类型Date是正确的，也是Timestamp d2变量。但是，当我调用stmt.setTimestamp时，将小时数减少了2。

Answer 1

CEST比UTC早2小时。造成差异的原因。

时间戳记MySQL正在减去我约会的两个小时

1 个答案: