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[英]How do I specify a query string in Tomcat's <servlet-mapping> <url-pattern>?
[英]How to specify url-pattern for Servlet filters in WebApplicationInitializer?
我正在使用Spring-web的WebApplicationInitializer
将web.xml
文件转换为基于Java的配置。 以下是定义的示例过滤器
<filter>
<filter-name>sampleFilter</filter-name>
<filter-class>com.SampleFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sampleFilter</filter-name>
<url-pattern>/sampleUrl</url-pattern>
</filter-mapping>
现在,WebApplicationInitializer类如下所示
class MyWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer{
@Override
protected Filter[] getServletFilters() {
return new Filter[]{new SampleFilter()};
}
//other methods
}
但是正如您所看到的,筛选器应用于所有资源,而我只想为/sampleUrl
映射筛选器。 我们该怎么做?
下面是我在一个项目中使用的完整示例:
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
//add MVC dispatcher servlet and map it to /
ServletRegistration.Dynamic dispatcher = servletContext.addServlet("dispatcher", new DispatcherServlet(rootContext));
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/");
dispatcher.setAsyncSupported(true);
//add spring characterEncoding filter
//to always have encoding on all requests
EnumSet<DispatcherType> dispatcherTypes = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.ERROR);
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
characterEncodingFilter.setForceEncoding(true);
FilterRegistration.Dynamic characterEncoding = servletContext.addFilter("characterEncoding", characterEncodingFilter);
characterEncoding.addMappingForUrlPatterns(dispatcherTypes, true, "/*");
characterEncoding.setAsyncSupported(true);
// specifies that the parser produced by this factory will
// validate documents as they are parsed.
SAXParserFactory.newInstance().setValidating(false);
// add spring contextloader listener
servletContext.addListener(new ContextLoaderListener(rootContext));
}
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