2020-02-16 标签:使用,正则,表达式,替换,表情符号,核心,代码,实现,如下,string,a,哈哈哈,em,aa,8888,r,d

实现代码如下：String a = "哇哈哈哈[em:5]aa8888[em:7]"; String r = "\\[em:(\\d+)\\]"; a = a.replaceAll(r, "$1.gif"); System.out.println(a); 打印出的结果是：5.gifaa88887.g