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我一直在一个相当荒谬的问题挣扎了几天： 我正在使用Spring MVC与FreeMarker的模板。春天和SiteMesh错误页面没有装饰（跳过主要过滤器）
这是在Tomcat容器上运行（使用Cargo进行本地测试）。
我正在工作的问题具有在标准化错误页面中实现统一行为的简要内容，但涵盖了可能遇到的各种类型的错误。 （例外的后端服务，权限不足，HTTP错误，等冒泡）
到目前为止，结果如下（包括图形）： 
- 图一：普通的导航页 - 按预期呈现。
- 图B &图C：ControllerAdvice.java捕获的服务和权限异常 - 同样没有问题。图D：任何HTTP错误（是的，如果触发该响应，甚至是418） - 正确检索内部Freemarker模板并使用绑定填充，但过滤器应用的装饰无法触发。
目前我们正在使用Spring配置的servlet处理，从而在web.xml精美疏：
的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<!--
This application uses the config of the mapping by Spring MVC
This is why you will not see servlet declarations here
The web app is defined in
- butler.SpringWebInit
- butler.SpringWebConfig
-->
<context-param>
<description>Escape HTML form data by default when using Spring tags</description>
<param-name>defaultHtmlEscape</param-name>
<param-value>true</param-value>
</context-param>
<!-- Disabling welcome list file for Tomcat, handling it in Spring MVC -->
<welcome-file-list>
<welcome-file/>
</welcome-file-list>
<!-- Generic Error redirection, allows for handling in Spring MVC -->
<error-page>
<location>/http-error</location>
<!-- Was originally just "/error" it was changed for internal forwarding/proxying/redirection attempts -->
</error-page>
</web-app>
配置由SpringWebInit.java处理我没有做任何修改：
SpringWebInit.java
/**
* Automatically loaded by class org.springframework.web.SpringServletContainerInitializer
*
* @see http://docs.spring.io/spring/docs/current/spring-framework-reference/htmlsingle/#mvc-container-config
*
* According to {@link AbstractSecurityWebApplicationInitializer}, this class should be
* annotated with a Order so that it is loaded before {@link SpringSecurityInit}
*/
@Order(0)
public class SpringWebInit extends AbstractAnnotationConfigDispatcherServletInitializer implements InitializingBean {
private final Logger LOG = LoggerFactory.getLogger(getClass());
@Override
public void afterPropertiesSet() throws Exception {
LOG.info("DispatcherServlet loaded");
}
@Override
protected Class<?>[] getServletConfigClasses() {
return null; // returning null, getRootConfigClasses() will handle this as well
}
@Override
protected String[] getServletMappings() {
return new String[] {"/**"}; // Spring MVC should handle everything
}
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] {SpringWebConfig.class, SpringSecurityConfig.class};
}
@Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter characterEncodingFilter =
new CharacterEncodingFilter(StandardCharsets.UTF_8.name(), true);
return new Filter[] {characterEncodingFilter, new SiteMeshFilter()};
}
}
这反过来又加载的各种配置的Freemarker的和SiteMesh的：
SpringWebConfig.java
@EnableWebMvc
@Configuration
@PropertySource("classpath:/butler-init.properties")
@ComponentScan({"butler"})
class SpringWebConfig extends WebMvcConfigurerAdapter implements InitializingBean {
private final Logger LOG = LoggerFactory.getLogger(getClass());
@Autowired
LoggedInUserService loggedInUserService;
@Override
public void afterPropertiesSet() throws Exception {
LOG.info("Web Mvc Configurer loaded");
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(userHeaderInterceptor());
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/static/**").addResourceLocations("/static/").setCacheControl(
CacheControl.maxAge(30, TimeUnit.MINUTES).noTransform().cachePublic().mustRevalidate());
}
@Bean
FreeMarkerViewResolver viewResolver() throws TemplateException {
FreeMarkerViewResolver resolver = new FreeMarkerViewResolver();
resolver.setCache(/*true*/false); // Set to false for debugging
resolver.setPrefix("");
resolver.setSuffix(".ftlh");
resolver.setRequestContextAttribute("rContext");
resolver.setContentType("text/html;charset=UTF-8");
DefaultObjectWrapper wrapper =
new DefaultObjectWrapperBuilder(freemarker.template.Configuration.getVersion()).build();
Map<String, Object> attrs = new HashMap<>();
attrs.put("loggedInUserService", wrapper.wrap(loggedInUserService));
resolver.setAttributesMap(attrs);
return resolver;
}
@Bean
FreeMarkerConfigurer freeMarkerConfig() {
Properties freeMarkerVariables = new Properties();
// http://freemarker.org/docs/pgui_config_incompatible_improvements.html
// http://freemarker.org/docs/pgui_config_outputformatsautoesc.html
freeMarkerVariables.put(freemarker.template.Configuration.INCOMPATIBLE_IMPROVEMENTS_KEY,
freemarker.template.Configuration.getVersion().toString());
FreeMarkerConfigurer freeMarkerConfigurer = new FreeMarkerConfigurer();
freeMarkerConfigurer.setDefaultEncoding("UTF-8");
freeMarkerConfigurer.setTemplateLoaderPath("/WEB-INF/mvc/view/ftl/");
freeMarkerConfigurer.setFreemarkerSettings(freeMarkerVariables);
return freeMarkerConfigurer;
}
@Bean
UserHeaderInterceptor userHeaderInterceptor() {
return new UserHeaderInterceptor();
}
@Bean
static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
}
SiteMeshFilter.java
public class SiteMeshFilter extends ConfigurableSiteMeshFilter {
@Override
protected void applyCustomConfiguration(SiteMeshFilterBuilder builder) {
// Don't use decorator REST api pages
builder.addExcludedPath("/api/*");
builder.addDecoratorPath("/*", Views.DECORATOR_HEADER_FOOTER);
builder.setIncludeErrorPages(true);
}
}
最后，在肉的问题在于，错误处理是通过DefaultControllerAdvice.java来处理的，DefaultControllerAdvice.java提供了拦截异常的规则，ErrorController.java本身处理映射，最终处理消息（显示关于错误的信息，根据错误的类型，等等）
DefaultControllerAdvice.java
@ControllerAdvice(annotations = Controller.class)
class DefaultControllerAdvice {
private static String EXCEPTION = "butlerexception";
@ExceptionHandler(ServiceException.class)
public String exceptionHandler(ServiceException se, Model model) {
model.addAttribute(EXCEPTION, se.getMessage());
return Views.ERROR;
}
@ExceptionHandler(PermissionException.class)
public String exceptionHandler(PermissionException pe, Model model) {
model.addAttribute(EXCEPTION, "Incorrect Permissions");
return Views.ERROR;
}
/*@ResponseStatus(HttpStatus.NOT_FOUND)
@ExceptionHandler(IOException.class)
public String exceptionHandler(Model model) { // Trying another way of intercepting 404 errors
model.addAttribute(EXCEPTION, "HTTP Error: 404");
return Views.ERROR;
}*/
}
ErrorController。java的
@Controller
class ErrorController extends AbstractController {
@Autowired
private LoggedInUserService loggedInUserService;
@RequestMapping(path="error",method = {GET,POST}) // Normal Error Controller, Returns fully decorated page without issue for Exceptions and normal requests.
public String error(RedirectAttributes redirectAttributes, HttpServletResponse response,Model model) {
//if (redirectAttributes.containsAttribute("errorCode")) { // Trying to invisibly use redirection
// Map<String, ?> redirAttribs = redirectAttributes.getFlashAttributes();
// model.addAttribute("butlerexception", "HTTP Error: "+redirAttribs.get("errorCode"));
//} else {
model.addAttribute("butlerexception", "Error");
//}
return ERROR;
}
@RequestMapping("/http-error") // Created to test HTTP requests being proxied via ServiceExceptions, Redirections, etc...
public String httpError(/*RedirectAttributes redirectAttributes,*/ HttpServletResponse response, HttpServletRequest request, Model model){
model.addAttribute("butlerexception", "HTTP Error: " + response.getStatus());
//throw new ServiceException("HTTP Error: " + response.getStatus()); // Trying to piggyback off Exception handling
//redirectAttributes.addFlashAttribute("errorCode", response.getStatus()); // Trying to invisibly use redirection
//redirectAttributes.addFlashAttribute("originalURL",request.getRequestURL());
return /*"redirect:"+*/ERROR;
}
}
到目前为止，我曾尝试：
- 抛出异常，以背驮式关闭工作ControllerAdvice规则。 - 结果未修饰。
- 在规则中添加响应代码，IONotFound和NoHandler发现异常 - 结果未修饰。
- 重定向到错误页面 - 结果装饰正确，但URL和响应代码不正确，试图用原始请求URL掩盖URL导致正确的URL和代码，但与之前缺少装饰。
此外，从调试日志中，我可以看到Spring Security的过滤器正常触发，但涉及装饰站点（用于登录和匿名请求）的错误只能触发HTTP错误。
目前的一个限制因素是，我无法在系统中直接定义web.xml（因为这里和Spring文档中提到的许多解决方案似乎都要求），而不会对开发过程造成过度干扰这个阶段。 （我也不要实现这种变化的权威机构（初级等级））
为方便起见，几个到目前为止，我已经试过的解决方案：
- Spring MVC 404 Error Page
- 404 error redirect in Spring with java config
- Generic Error Page not decorated
- Custom Error Page Not Decorated by Sitemesh in Spring Security Application
- Custom 404 using Spring DispatcherServlet
- <error-page> setup doesn't work in Spring MVC
在这一点上，我真的不知道还有什么可以尝试，我到底在想什么？
编辑：它原来是在SiteMesh的一个bug与已通过的sitemesh后重新设置的contentType以触发装修解决了.setContentType(...)触发做到：Bug report with description and solution