java测试类

import java.text.SimpleDateFormat;
import java.util.Calendar;

import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import cn.co.wms.dao.common.CommonPermitCheckDao;
import cn.co.wms.dao.extend.WmsStoVelocityHistoryDao;
import cn.co.wms.service.StockManage.WmsStoVelocityHistoryService;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class Test {
	@org.junit.Test
	public void test1() {
              // 获取之前半年
	      SimpleDateFormat sdf = new SimpleDateFormat("YYYY-MM");
	      Calendar calendar = Calendar.getInstance();
	      calendar.add(Calendar.MONTH, -1);
	      System.out.println(sdf.format(calendar.getTime()));
	      calendar.add(Calendar.MONTH, -5);
	      System.out.println(sdf.format(calendar.getTime()));
	}
}