Spring中的所有路径匹配问题总结
关于Spring的路径, 问的最多的问题就是如何拦截所有以.do结尾的请求.
大家都是在猜, 网上给出的答案五花八门, 比如: *do, /*do, /**do, /** 等..然而这些都是错的.
正确答案是/**/*.do, 如果要拦截/api下的所有.do结尾的请求, 那么应该使用/api/**/*.do, 以此类推.
言归正传, Spring中无论是handler路径映射, 还是interceptor路径匹配, 还是sping.xml中加载配置文件时使用的”classpath*”, 都使用的是AntMathcer规则( 见PathMatcher文档), 实现类是org.springframework.util.AntPathMatcher. 这里是这个类的官方文档AntPathMatcher文档
里面有这样的说明
匹配符规则
?匹配一个字符
*匹配0或更多字符
**匹配path路径中的0个或更多目录
{spring:[a-z]+}匹配正则[a-z]+并作为一个路径变量, 赋值给变量spring
注意在AntPathMatcher中, 有个路径分隔符的概念, 路径分隔符是不能被 ? 或单个 * 匹配的, 路径分隔符默认是 / , 在匹配类全限定名时, 设置成 . 其他规则不变.
以下是简单的介绍: (注意**可以匹配0个或更多的目录)
规则简介匹配不匹配
/goods/t?st.jsp/goods路径下只相差一个字符的路径/good/test.jsp /goods/text.jsp /goods/tast.jsp等/goods/taast.jsp /google/tast.jsp等
/**/test.jsp匹配任何以test.jsp结尾的路径/test.jsp/goods/test.jsp /my/goods/test.jsp /my/favorite/goods/test.jsp等/goods/abc.jsp等
/**/*.jsp任何以jsp结尾的路径/test.jsp /goods/test.jsp /my/goods/test.jsp等/hello.html /my/hello.html等
/goods/**匹配goods下的所有路径/goods /goods/a.html /goods/a.jsp /goods/test/a.jsp等非/goods/下的路径
/或/goods只匹配/或/goods这一个路径,千万不要误认为是所有路径只有/和/goods其他任何路径
/**匹配所有路径/test/goods/test /test.html /test.jsp /goods/test.jsp /my/goods/test.jsp等无
完整用法可见Sping的托管在github的测试代码AntPathMatcherTests.java
以下是我从中摘取的一部分. 可以不用看这个.
// 完全匹配
assertTrue(pathMatcher.match("test","test"));
assertTrue(pathMatcher.match("/test","/test"));
//不匹配
assertFalse(pathMatcher.match("/test.jpg","test.jpg"));
assertFalse(pathMatcher.match("test","/test"));
// 使用?进行匹配, ?表示匹配一个字符
assertTrue(pathMatcher.match("t?st","test"));
assertTrue(pathMatcher.match("??st","test"));
//不匹配
assertFalse(pathMatcher.match("tes?","tes"));
assertFalse(pathMatcher.match("tes?","testt"));
//使用*进行匹配, *匹配0 更多字符
assertTrue(pathMatcher.match("*","test"));
assertTrue(pathMatcher.match("test*","test"));
assertTrue(pathMatcher.match("test*","testTest"));
assertTrue(pathMatcher.match("test/*","test/Test"));
assertTrue(pathMatcher.match("test/*","test/t"));
assertTrue(pathMatcher.match("*.*","test."));
assertTrue(pathMatcher.match("*.*","test.test.test"));
//以下不匹配
assertFalse(pathMatcher.match("test*","tst"));
assertFalse(pathMatcher.match("test*","tsttest"));
assertFalse(pathMatcher.match("test*","test/"));
assertFalse(pathMatcher.match("test/*","test"));
// 使用?和/一起匹配
assertTrue(pathMatcher.match("/?","/a"));
assertTrue(pathMatcher.match("/?/a","/a/a"));
assertTrue(pathMatcher.match("/a/?","/a/b"));
assertTrue(pathMatcher.match("/??/a","/aa/a"));
assertTrue(pathMatcher.match("/a/??","/a/bb"));
assertTrue(pathMatcher.match("/?","/a"));
// 使用**匹配, 匹配0个或更多目录
assertTrue(pathMatcher.match("/**","/testing/testing"));
assertTrue(pathMatcher.match("/*/**","/testing/testing"));
assertTrue(pathMatcher.match("/**/*","/testing/testing"));
assertTrue(pathMatcher.match("/bla/**/bla","/bla/testing/testing/bla"));
assertTrue(pathMatcher.match("/bla/**/bla","/bla/testing/testing/bla/bla"));
assertTrue(pathMatcher.match("/*bla*/**/bla/**","/XXXblaXXXX/testing/testing/bla/testing/testing/"));
assertTrue(pathMatcher.match("/*bla*/**/bla/*","/XXXblaXXXX/testing/testing/bla/testing"));
assertTrue(pathMatcher.match("*bla*/**/bla/**","XXXblaXXXX/testing/testing/bla/testing/testing"));
assertFalse(pathMatcher.match("*bla*/**/bla/*","XXXblaXXXX/testing/testing/bla/testing/testing"));
assertTrue(pathMatcher.match("/foo/bar/**","/foo/bar")) ;
assertTrue(pathMatcher.match("/{bla}.*","/testing.html"));
