Split字符串由逗号分隔，但无法找到通用解决方案

String str = "\"{\"\"oman\"\"\",333,333,Locationoman,1,NULL,3.33333E+15,0,NULL,-1,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,,NULL,NULL,NULL,1,NULL,50036,1.42771E+12,0,NULL,0,NULL,NULL,NULL,,NULL,NULL,NULL,NULL,2,0,1,3,0,1,T,F,F,0,Volume,-1,302,50036,50036,0,0,0,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,3,NULL,NULL,NULL,2,1,1,1,3,1,1,1,50036,0,1,0,OmanPrepaid,0,blrfts186_f861,CCC_USER_257,a082000000000033,\"16,436,113,650\",,NULL}";
String str = "\"{\"\"oman\"\"\",333,333,Locatio