JTimeUtils
import java.math.BigDecimal; import java.text.ParseException; import java.util.Calendar; import java.util.GregorianCalendar; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.lang3.time.FastDateFormat; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.config.ConfigurableBeanFactory; import org.springframework.context.annotation.Scope; import org.springframework.web.bind.annotation.RestController; import com.google.common.collect.Lists; @RestController @Scope(ConfigurableBeanFactory.SCOPE_SINGLETON) public abstract class JTimeUtils {
protected FastDateFormat format = FastDateFormat.getInstance("yyyy-MM-dd"); /** * 验证时间是否过了3个月 * * @param time * @return */ public boolean validateTime(String time) { try { threadLocal.get().setTime(format.parse(time)); threadLocal.get().add(Calendar.MONTH, 3 + 1); return (threadLocal.get().getTime().getTime() >= System.currentTimeMillis()); } catch (ParseException e) { e.printStackTrace(); } return false; } /** * 四舍五入保留1位小数 * * @param val * @return */ public double toDouble(double val) { BigDecimal bigDe = new BigDecimal(val); return bigDe.setScale(1, BigDecimal.ROUND_HALF_UP).doubleValue(); } /** * 要在高并发环境下能有比较好的体验, 可以使用ThreadLocal来限制GregorianCalendar只能在线程内共享, * 这样就避免了多线程导致的线程安全问题。 */ protected static ThreadLocal<GregorianCalendar> threadLocal = new ThreadLocal<GregorianCalendar>() { @Override protected GregorianCalendar initialValue() { return new GregorianCalendar(); } }; }