[英]How can I have case insensitive URLS in Spring MVC with annotated mappings
我已经通过我的 spring mvc web 应用程序对映射进行了很好的注释,但是,它们区分大小写。 我找不到使它们不区分大小写的方法。 (我很乐意在 Spring MVC 中实现这一点,而不是以某种方式重定向流量)
Spring 4.2 将支持不区分大小写的路径匹配。 您可以按如下方式配置它:
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
AntPathMatcher matcher = new AntPathMatcher();
matcher.setCaseSensitive(false);
configurer.setPathMatcher(matcher);
}
}
根据this webpost,您需要在Spring MVC中同时添加一个HandlerMapping和一个HandlerAdapter 。 Mapping 将请求映射到相应的控制器,适配器负责使用控制器执行请求。
因此,您需要覆盖映射器和适配器的PathMatcher 。
Ex(将使所有@Controllers 不区分大小写):
新匹配器:
public class CaseInsenseticePathMatcher extends AntPathMatcher {
@Override
protected boolean doMatch(String pattern, String path, boolean fullMatch, Map<String, String> uriTemplateVariables) {
System.err.println(pattern + " -- " + path);
return super.doMatch(pattern.toLowerCase(), path.toLowerCase(), fullMatch, uriTemplateVariables);
}
}
应用上下文.xml:
<bean id="matcher" class="test.CaseInsenseticePathMatcher"/>
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
<property name="pathMatcher" ref="matcher"/>
</bean>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="pathMatcher" ref="matcher"/>
<property name="webBindingInitializer">
<bean class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer"/>
</property>
<property name="messageConverters">
<list>
<bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/>
<bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
<bean class="org.springframework.http.converter.FormHttpMessageConverter"/>
<bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter"/>
</list>
</property>
</bean>
<bean id="conversion-service" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"/>
添加了与 < mvc:annotation-driven > 相同的内容。 (感谢大卫帕克斯的链接)
在 Spring 3.2+ / Spring Boot 中,您现在可以使用简化的 Java 配置设置不区分大小写的 URL 匹配。
首先,您需要创建 CaseInsensitivePathMatcher.groovy 或 Java 类:
import org.springframework.util.AntPathMatcher
class CaseInsensitivePathMatcher extends AntPathMatcher{
@Override
protected boolean doMatch(String pattern, String path, boolean fullMatch, Map<String, String> uriTemplateVariables) {
super.doMatch(pattern.toLowerCase(), path.toLowerCase(), fullMatch, uriTemplateVariables)
}
}
接下来,要实现这一点,您应该有一个用 Springs @Configuration 注释的类,它扩展了 WebMvcConfigurerAdapter 类,如下所示(请注意,我的代码包含在 .groovy 类中,因此示例中不需要 'return' 关键字) :
@Configuration
public class ApplicationConfig extends WebMvcConfigurerAdapter
然后将以下2个方法添加到类中:
/**
* Creates a patchMatcher bean that matches case insensitively
* @return PathMatcher
*/
@Bean
public PathMatcher pathMatcher() {
new CaseInsensitivePathMatcher()
}
/**
* Overrides the configurePathMatch() method in WebMvcConfigurerAdapter
* <br/>Allows us to set a custom path matcher, used by the MVC for @RequestMapping's
* @param configurer
*/
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
configurer.pathMatcher = pathMatcher()
}
}
就是这样,您现在应该以最少的配置为不区分大小写的 URL 进行所有设置
Spring 因为版本 5.3 默认不再使用 PathMatcher,而是使用PathPatternMatcher 。 要配置 PathPatternMatcher,请执行以下操作:
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
PathPatternParser patternParser = new PathPatternParser();
patternParser.setCaseSensitive(false);
configurer.setPatternParser(patternParser);
}
}
smat解决问题报告
在smat 的解决方案中,有一个小的副作用(我会为此归咎于 spring-mvc)。
起初, AntPathMatcher.doMatch()
似乎根据requested-url 和controller-method 的request-mapping 字符串返回true/false(这是这里唯一应该做的事情)。 但是,这种方法也用于另一个目的(它没有写在文档中!)。 另一个目的是在控制器方法中收集@PathVariable
相应值。 这些值收集在Map<String, String> uriTemplateVariables
(最后一个参数)中。这些收集的值用于传递给控制器方法作为参数值。
例如,我们有这样的控制器方法,
@RequestMapping("/code/{userCode}")
public String getCode(@PathVariable("userCode") String userCode) {
System.out.println(userCode);
}
如果我们用URL访问, /code/AbD
然后用由SMAT溶液AntPathMatcher.doMatch()
将收集@PathVariable
在值Map<String, String> uriTemplateVariables
作为userCode->abd
。 由于我们将路径字符串小写,因此收集的值也是小写的。 并将这个小写的 userCode 值传递给我们的控制器。
但是,我很感谢smat 的解决方案,到目前为止,它对我很好,没有任何其他问题。
解决方案
通过 smat 解决解决方案解决了这个问题。 在扩展的AntPathMatcher
类中没有小写路径或模式字符串,我强制我的扩展AntPathMatcher
使用我的自定义AntPathStringMatcher
。 我的自定义AntPathStringMatcher
在不改变实际字符串大小写的情况下AntPathStringMatcher
不区分大小写的匹配。
在以下解决方案代码中,大部分代码是从原始类代码复制的(由于私有访问,我想自定义的代码对于子类隐藏了)。
自定义 AntPathMatcher,
public class CaseInsensitivePathMatcher extends AntPathMatcher {
private final Map<String, CaseInsensitiveAntPathStringMatcher> stringMatcherCache = new ConcurrentHashMap<String, CaseInsensitiveAntPathStringMatcher>();
/**
* Actually match the given <code>path</code> against the given
* <code>pattern</code>.
*
* @param pattern
* the pattern to match against
* @param path
* the path String to test
* @param fullMatch
* whether a full pattern match is required (else a pattern match
* as far as the given base path goes is sufficient)
* @return <code>true</code> if the supplied <code>path</code> matched,
* <code>false</code> if it didn't
*/
protected boolean doMatch(String pattern, String path, boolean fullMatch, Map<String, String> uriTemplateVariables) {
if (path.startsWith(AntPathMatcher.DEFAULT_PATH_SEPARATOR) != pattern.startsWith(AntPathMatcher.DEFAULT_PATH_SEPARATOR)) {
return false;
}
String[] pattDirs = StringUtils.tokenizeToStringArray(pattern, AntPathMatcher.DEFAULT_PATH_SEPARATOR);
String[] pathDirs = StringUtils.tokenizeToStringArray(path, AntPathMatcher.DEFAULT_PATH_SEPARATOR);
int pattIdxStart = 0;
int pattIdxEnd = pattDirs.length - 1;
int pathIdxStart = 0;
int pathIdxEnd = pathDirs.length - 1;
// Match all elements up to the first **
while (pattIdxStart <= pattIdxEnd && pathIdxStart <= pathIdxEnd) {
String patDir = pattDirs[pattIdxStart];
if ("**".equals(patDir)) {
break;
}
if (!matchStrings(patDir, pathDirs[pathIdxStart], uriTemplateVariables)) {
return false;
}
pattIdxStart++;
pathIdxStart++;
}
if (pathIdxStart > pathIdxEnd) {
// Path is exhausted, only match if rest of pattern is * or **'s
if (pattIdxStart > pattIdxEnd) {
return (pattern.endsWith(AntPathMatcher.DEFAULT_PATH_SEPARATOR) ? path.endsWith(AntPathMatcher.DEFAULT_PATH_SEPARATOR) : !path
.endsWith(AntPathMatcher.DEFAULT_PATH_SEPARATOR));
}
if (!fullMatch) {
return true;
}
if (pattIdxStart == pattIdxEnd && pattDirs[pattIdxStart].equals("*") && path.endsWith(AntPathMatcher.DEFAULT_PATH_SEPARATOR)) {
return true;
}
for (int i = pattIdxStart; i <= pattIdxEnd; i++) {
if (!pattDirs[i].equals("**")) {
return false;
}
}
return true;
} else if (pattIdxStart > pattIdxEnd) {
// String not exhausted, but pattern is. Failure.
return false;
} else if (!fullMatch && "**".equals(pattDirs[pattIdxStart])) {
// Path start definitely matches due to "**" part in pattern.
return true;
}
// up to last '**'
while (pattIdxStart <= pattIdxEnd && pathIdxStart <= pathIdxEnd) {
String patDir = pattDirs[pattIdxEnd];
if (patDir.equals("**")) {
break;
}
if (!matchStrings(patDir, pathDirs[pathIdxEnd], uriTemplateVariables)) {
return false;
}
pattIdxEnd--;
pathIdxEnd--;
}
if (pathIdxStart > pathIdxEnd) {
// String is exhausted
for (int i = pattIdxStart; i <= pattIdxEnd; i++) {
if (!pattDirs[i].equals("**")) {
return false;
}
}
return true;
}
while (pattIdxStart != pattIdxEnd && pathIdxStart <= pathIdxEnd) {
int patIdxTmp = -1;
for (int i = pattIdxStart + 1; i <= pattIdxEnd; i++) {
if (pattDirs[i].equals("**")) {
patIdxTmp = i;
break;
}
}
if (patIdxTmp == pattIdxStart + 1) {
// '**/**' situation, so skip one
pattIdxStart++;
continue;
}
// Find the pattern between padIdxStart & padIdxTmp in str between
// strIdxStart & strIdxEnd
int patLength = (patIdxTmp - pattIdxStart - 1);
int strLength = (pathIdxEnd - pathIdxStart + 1);
int foundIdx = -1;
strLoop: for (int i = 0; i <= strLength - patLength; i++) {
for (int j = 0; j < patLength; j++) {
String subPat = pattDirs[pattIdxStart + j + 1];
String subStr = pathDirs[pathIdxStart + i + j];
if (!matchStrings(subPat, subStr, uriTemplateVariables)) {
continue strLoop;
}
}
foundIdx = pathIdxStart + i;
break;
}
if (foundIdx == -1) {
return false;
}
pattIdxStart = patIdxTmp;
pathIdxStart = foundIdx + patLength;
}
for (int i = pattIdxStart; i <= pattIdxEnd; i++) {
if (!pattDirs[i].equals("**")) {
return false;
}
}
return true;
}
/**
* Tests whether or not a string matches against a pattern. The pattern may
* contain two special characters:<br>
* '*' means zero or more characters<br>
* '?' means one and only one character
*
* @param pattern
* pattern to match against. Must not be <code>null</code>.
* @param str
* string which must be matched against the pattern. Must not be
* <code>null</code>.
* @return <code>true</code> if the string matches against the pattern, or
* <code>false</code> otherwise.
*/
private boolean matchStrings(String pattern, String str, Map<String, String> uriTemplateVariables) {
CaseInsensitiveAntPathStringMatcher matcher = this.stringMatcherCache.get(pattern);
if (matcher == null) {
matcher = new CaseInsensitiveAntPathStringMatcher(pattern);
this.stringMatcherCache.put(pattern, matcher);
}
return matcher.matchStrings(str, uriTemplateVariables);
}
}
自定义 AntPathStringMatcher,
public class CaseInsensitiveAntPathStringMatcher {
private static final Pattern GLOB_PATTERN = Pattern.compile("\\?|\\*|\\{((?:\\{[^/]+?\\}|[^/{}]|\\\\[{}])+?)\\}");
private static final String DEFAULT_VARIABLE_PATTERN = "(.*)";
private final Pattern pattern;
private final List<String> variableNames = new LinkedList<String>();
/** Construct a new instance of the <code>AntPatchStringMatcher</code>. */
CaseInsensitiveAntPathStringMatcher(String pattern) {
this.pattern = createPattern(pattern);
}
private Pattern createPattern(String pattern) {
StringBuilder patternBuilder = new StringBuilder();
Matcher m = GLOB_PATTERN.matcher(pattern);
int end = 0;
while (m.find()) {
patternBuilder.append(quote(pattern, end, m.start()));
String match = m.group();
if ("?".equals(match)) {
patternBuilder.append('.');
}
else if ("*".equals(match)) {
patternBuilder.append(".*");
}
else if (match.startsWith("{") && match.endsWith("}")) {
int colonIdx = match.indexOf(':');
if (colonIdx == -1) {
patternBuilder.append(DEFAULT_VARIABLE_PATTERN);
variableNames.add(m.group(1));
}
else {
String variablePattern = match.substring(colonIdx + 1, match.length() - 1);
patternBuilder.append('(');
patternBuilder.append(variablePattern);
patternBuilder.append(')');
String variableName = match.substring(1, colonIdx);
variableNames.add(variableName);
}
}
end = m.end();
}
patternBuilder.append(quote(pattern, end, pattern.length()));
return Pattern.compile(patternBuilder.toString(), Pattern.CASE_INSENSITIVE); // this line is updated to create case-insensitive pattern object
}
private String quote(String s, int start, int end) {
if (start == end) {
return "";
}
return Pattern.quote(s.substring(start, end));
}
/**
* Main entry point.
*
* @return <code>true</code> if the string matches against the pattern, or <code>false</code> otherwise.
*/
public boolean matchStrings(String str, Map<String, String> uriTemplateVariables) {
Matcher matcher = pattern.matcher(str);
if (matcher.matches()) {
if (uriTemplateVariables != null) {
// SPR-8455
Assert.isTrue(variableNames.size() == matcher.groupCount(),
"The number of capturing groups in the pattern segment " + pattern +
" does not match the number of URI template variables it defines, which can occur if " +
" capturing groups are used in a URI template regex. Use non-capturing groups instead.");
for (int i = 1; i <= matcher.groupCount(); i++) {
String name = this.variableNames.get(i - 1);
String value = matcher.group(i);
uriTemplateVariables.put(name, value);
}
}
return true;
}
else {
return false;
}
}
Spring 4.2 中 bean 文件的示例,仅支持 v4.2+:
<mvc:annotation-driven validator="validator">
<mvc:path-matching path-matcher="pathMatcher" />
</mvc:annotation-driven>
...
<!--Set endpoints case insensitive, spring is case-sensitive by default-->
<bean id="pathMatcher" class="org.springframework.util.AntPathMatcher">
<property name="caseSensitive" value="false" />
</bean>
好吧,我无法回答你的问题(我试过了,我想我能弄明白)。 但是看到您在 2 天内没有收到任何回复,这里至少有一些线索:
这个例子似乎表明这是可能的:
它在 Spring 中引用了这个类
我的猜测(而且只是猜测)是您需要扩展<mvc:annotation-driven/>
并使用正确的参数实现各个 bean 以使其不区分大小写。 看:
http://rapid-web.tumblr.com/post/296916668/what-does-annotation-driven-do
最后一点,我在阅读的其他地方注意到它说所有路径默认为小写,您是否确认/MyPath
不是由@RequestMapping("/mypath")
?
再一次,我能做的就是最好的思考。 也许它会让你走得足够远,去问一个更具体的问题,引导你找到答案——这就是这些事情有时是如何运作的。 祝你好运!
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.