Replaces each substring of this string that matches the given regular expression with the given replacement.
Replaces each substring of this string that matches the given regular expression with the given replacement.
只有两个参数，第一个参数是要进行匹配的子串，第二个是替换串。
Replaces each substring of this string that matches the given regular expression with the given replacement.
只有两个参数，第一个参数是要进行匹配的子串，第二个是替换串。