问题
在java中获取计数后如何将’timeStamp’转换为date？
我目前的代码如下：
public class GetCurrentDateTime {
public int data() {
int count = 0;
java.sql.Timestamp timeStamp = new Timestamp(System.currentTimeMillis());
java.sql.Date date = new java.sql.Date(timeStamp.getTime());
System.out.println(date);
//count++;
try {
Class.forName(“com.mysql.jdbc.Driver”);
Connection con = DriverManager.getConnection(“jdbc:mysql://localhost:3306/pro”, “root”, “”);
PreparedStatement statement = con.prepareStatement(“select * from orders where status=’Q’ AND date=CURDATE()”);
ResultSet result = statement.executeQuery();
while (result.next()) {
// Do something with the row returned.
count++; //if the first col is a count.
}
} catch (Exception exc) {
System.out.println(exc.getMessage());
}
return count;
}
}
这是我的数据库：
我得到的输出是2012-08-07 0，但等效查询返回3.为什么我得到0？
#1 热门回答(152 赞)
只需创建一个带有标记为getTime()value的newDate对象作为参数。
这是一个例子(我使用当前时间的示例时间戳)：
Timestamp stamp = new Timestamp(System.currentTimeMillis());
Date date = new Date(stamp.getTime());
System.out.println(date);
#2 热门回答(33 赞)
// timestamp to Date
long timestamp = 00; //Example -> in ms
Date d = new Date(timestamp );
// Date to timestamp
long timestamp = d.getTime();
//If you want the current timestamp :
Calendar c = Calendar.getInstance();
long timestamp = c.getTimeInMillis();
#3 热门回答(10 赞)
只是：
Timestamp timestamp = new Timestamp(long);
Date date = new Date(timestamp.getTime());
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