provinceCode = provinceCode.indexOf("|") != -1 ? provinceCode : provinceCode.substring(0, 2) + "|" + provinceCode.substring(2, provinceCode.length());

//只替換一次

StringUtils.replaceOnece("abcabcabc","a","1");——>輸出結果1bcabcabc

//全部替換

StringUtils.replace("abcabcabc","a","1");——>輸出結果1bc1bc1bc

//限制替換次數

StringUtils.replace("abcabcabc","a","1",1);——>輸出結果1bcabcabc