List _first=new ArrayList();
SiteHomePage siteHomePage1 = new SiteHomePage();
siteHomePage1.setSiteId("2262");
siteHomePage1.setCityName("chengshiyi");
SiteHomePage siteHomePage2 = new SiteHomePage();
siteHomePage2.setSiteId("2263");
siteHomePage2.setCityName("chengshiyi2");
SiteHomePage siteHomePage3 = new SiteHomePage();
siteHomePage3.setSiteId("2264");
siteHomePage3.setCityName("chengshiyi4");
_first.add(siteHomePage1);
_first.add(siteHomePage2);
_first.add(siteHomePage3);
List _second=new ArrayList();
_second.add("2262");
_second.add("2263");
想要 _first 的SiteId 和 _second 相等的
_first 的值 不要for循环 想要一个简单高效的方法 for循环数据大执行慢