Scala正则匹配

用正则匹配拿到下面的数据

{"tablename":"a.student", "s3_path":"s3n://bucketname/student/","delimiter":",","partitions":""},
{"tablename":"a.tearcher", "s3_path":"s3n://bucketname/teacher/","delimiter":",","partitions":""},
{"tablename":"a.class", "s3_path":"s3n://bucketname/class/","delimiter":",","partitions":""}

1、通过","分割取出三组数据，注意有个键值对的值刚好是","，要避免拿这个当分隔符，正则表达式为",(?!\",)"

2、通过":"分割键值对的键和值，注意s3路径里边包含了":"，要把这个排除掉，正则表达式可以这么用":(?![://])"