关于java:关于java8-对象转map时重复key-Duplicate-key-xxxx问题

反复时采纳前面的value 笼罩后面的value

Map<String, String> map = list.stream().collect(Collectors.toMap(Student :: getClassName, Student :: getStudentName, 
    (value1, value2 )->{ 
            return value2; 
    }));