使用Java8将对象里的某一个属性取出组成一个新的list
List<Spgg1> list=new ArrayList<>();Spgg1 spgg1=new Spgg1();spgg1.setSpdm("测试");spgg1.setGgdm("001");list.add(spgg1);Spgg1 spgg2=new Spgg1();spgg2.setSpdm("测试2");spgg2.setGgdm("002");list.add(spgg2);List<String> strlist=list.stream().map(Spgg1::getSpdm).collect(Collectors.toList());System.out.println(list);System.out.println(strlist);