AntPathMatcher通配符规则

AntPathMatcher通配符规则

官方文档：https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/util/AntPathMatcher.html

官方示例：

The mapping matches URLs using the following rules:

• ? matches one character
• * matches zero or more characters
• ** matches zero or more directories in a path
• {spring:[a-z]+} matches the regexp [a-z]+ as a path variable named "spring"

Examples

• com/t?st.jsp — matches com/test.jsp but also com/tast.jsp or com/txst.jsp
• com/*.jsp — matches all .jsp files in the com directory
• com/**/test.jsp — matches all test.jsp files underneath the com path
• org/springframework/**/*.jsp — matches all .jsp files underneath the org/springframework path
• org/**/servlet/bla.jsp — matches org/springframework/servlet/bla.jsp but also org/springframework/testing/servlet/bla.jsp and org/servlet/bla.jsp
• com/{filename:\\w+}.jsp will match com/test.jsp and assign the value test to the filename variable

Note: a pattern and a path must both be absolute or must both be relative in order for the two to match. Therefore it is recommended that users of this implementation to sanitize patterns in order to prefix them with "/" as it makes sense in the context in which they're used.

Since:

16.07.2003

Author:

Alef Arendsen, Juergen Hoeller, Rob Harrop, Arjen Poutsma, Rossen Stoyanchev, Sam Brannen

补充示例：

• /** — 特殊字符串，匹配所有路径
• ** — 特殊字符串，匹配所有路径
• /bla/**  — 匹配所有以/bla/开头的路径

AntPathRequestMatcher的构造函数

    public AntPathRequestMatcher(String pattern, String httpMethod, boolean caseSensitive, UrlPathHelper urlPathHelper) {
        Assert.hasText(pattern, "Pattern cannot be null or empty");
        this.caseSensitive = caseSensitive;
        if (!pattern.equals("/**") && !pattern.equals("**")) {
            if (pattern.endsWith("/**") && pattern.indexOf(63) == -1 && pattern.indexOf(123) == -1 && pattern.indexOf(125) == -1 && pattern.indexOf("*") == pattern.length() - 2) {
                this.matcher = new AntPathRequestMatcher.SubpathMatcher(pattern.substring(0, pattern.length() - 3), caseSensitive);
            } else {
                this.matcher = new AntPathRequestMatcher.SpringAntMatcher(pattern, caseSensitive);
            }
        } else {
            pattern = "/**";
            this.matcher = null;
        }

        this.pattern = pattern;
        this.httpMethod = StringUtils.hasText(httpMethod) ? HttpMethod.valueOf(httpMethod) : null;
        this.urlPathHelper = urlPathHelper;
    }