我有以下使用java Stream
的代码。
我试图让函数构建一个值为"a,b"的字符串,在这种情况下,输出(在本例中是separatedByComma
)总是"b"。
请问有人能够帮忙解答吗?
@Test
public void testJoin() {
List<MOccS> occList = new ArrayList<> ( );
MOccS mOccS = new MOccS ();
mOccS.setOccSCd ( "1" );
mOccS.setOccSNm ( "a" );
occList.add ( mOccS );
MOccS mOccS2 = new MOccS ();
mOccS2.setOccSCd ( "2" );
mOccS2.setOccSNm ( "b" );
occList.add ( mOccS2 );
List<String> strings = new ArrayList<> ( );
strings.add ( "1" );
strings.add ( "2" );
String separatedByComma = "";
for(String word: strings) {
separatedByComma = occList.stream ()
.filter ( occ -> word.equalsIgnoreCase ( occ.getOccSCd () ) )
.map ( occ -> occ.getOccSNm () )
.collect ( Collectors.joining ( "," ) );
}
System.out.println (separatedByComma);
}
class MOccS{
String occSCd;
String occSNm;
...
getter/setter
...
}