原文地址:blog.csdn.net/bbirdsky/article/details/45368709
正则需要转义字符:'$', '(', ')', '*', '+', '.', '[', ']', '?', '\', '^', '{', '}', '|'
异常现象: java.util.regex.PatternSyntaxException: Dangling meta. character '*' near index 0
解决方法: 对特殊字符加\转义即可。
注意:虽然使用[]在部分条件下也可以,但是在对于(、[、{范围边界开始符不匹配的情况下会报如下:
异常现象:java.util.regex.PatternSyntaxException: Illegal repetition near index 50
Java过滤正则表达式特殊字代码如下(注意:\需要第一个替换,否则replace方法替换时会有逻辑bug)
-
-
-
-
-
-
- public static String escapeExprSpecialWord(String keyword) {
- if (StringUtils.isNotBlank(keyword)) {
- String[] fbsArr = { "\", "$", "(", ")", "*", "+", ".", "[", "]", "?", "^", "{", "}", "|" };
- for (String key : fbsArr) {
- if (keyword.contains(key)) {
- keyword = keyword.replace(key, "\" + key);
- }
- }
- }
- return keyword;
- }
-
-
-
-
-
-
- public static String escapeExprSpecialWord(String keyword) {
- if (StringUtils.isNotBlank(keyword)) {
- String[] fbsArr = { "\", "$", "(", ")", "*", "+", ".", "[", "]", "?", "^", "{", "}", "|" };
- for (String key : fbsArr) {
- if (keyword.contains(key)) {
- keyword = keyword.replace(key, "\" + key);
- }
- }
- }
- return keyword;
- }