我有一个xml字符串，如
S = "<B xmns=\"som2\"> <a other='v1' more='v2'/><b some=\"v3/></B>".
我要移除结束标记</B>
</B>
S2 = "<B xmns=\"som2\"> <a other='v1' more='v2'/><b some=\"v3/>"
我如何才能做到这一点？
rseugnpd1#
If you only want to remove the specific string literal </B> then getting a sublist will do the trick:
S = "<B xmns=\"som2\"> <a other='v1' more='v2'/><b some=\"v3\"/></B>", lists:sublist(S, 1, length(S) - 4). %%= "<B xmns=\"som2\"> <a other='v1' more='v2'/><b some=\"v3\"/>"
If you need a more general approach you can use the re:replace/3 function:
re:replace/3
S1 = re:replace(S, "</B>", ""), S2 = iolist_to_binary(S1), binary_to_list(S2). %%= "<B xmns=\"som2\"> <a other='v1' more='v2'/><b some=\"v3\"/>"
As mentioned in the comments, providing the option {return, list} is much cleaner:
{return, list}
re:replace(S, "</B>", "", [{return,list}]). %%= "<B xmns=\"som2\"> <a other='v1' more='v2'/><b some=\"v3\"/>"
vbopmzt12#
可以使用string模块中的string：replace/3函数。string：replace/3 -将String中的SearchPattern替换为Replacement。第三个函数参数指示是否要替换SearchPattern的前导、尾随或所有遇到的SearchPattern。
S2 = string:replace(S, "</B>", "", all).
2条答案
按热度按时间rseugnpd1#
If you only want to remove the specific string literal
</B>then getting a sublist will do the trick:If you need a more general approach you can use the
re:replace/3function:Update
As mentioned in the comments, providing the option
{return, list}is much cleaner:vbopmzt12#
可以使用string模块中的string：replace/3函数。
string：replace/3 -将String中的SearchPattern替换为Replacement。第三个函数参数指示是否要替换SearchPattern的前导、尾随或所有遇到的SearchPattern。