java连接oracle数据库时报错ORA-12505

java连接oracle数据库时报错ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

错误的url：

jdbc:oracle:thin:@xxx.xxx.xxx.xxx:1521:orcl

正确的写法:

jdbc:oracle:thin:@xxx.xxx.xxx.xxx:1521/orcl