This commit also removes the corresponding deprecated Servlet MVC variant and updates DispatcherServlet.properties to point to RequestMappingHandlerMapping/Adapter by default.
Issue: SPR-14129
Prior to this commit, the springUrl Velocity macro would only prepend
the context to the given URL; this means that the
ServletHttpResponse.encodeUri method is not called and neither the
ResourceUrlProvider.
This commit changes this macro to use RequestContext.getContextUrl which
prepends the context and encodes the URI.
Issue: SPR-14027
This commit introduces the following changes:
- Content type can now be properly configured
- Default content type is "text/html"
- Content type and charset are now properly set in the response
Issue: SPR-13379
This commit adds a new sharedEngine property to ScriptTemplateConfigurer
and ScriptTemplateView in order to support non thread-safe ScriptEngine
implementations like Nashorn.
When this flag is set to false, the engine is retrieved from a
ThreadLocal<ScriptEngine> field instead of a ScriptEngine one.
Also as part of this commit, all the initialization logic has been moved from
ScriptTemplateConfigurer to ScriptTemplateView since the script engine can
now be lazily initialized multiple time in the view when sharedEngine is
set to false.
Issue: SPR-13034
This commit introduces the following changes:
- configureCors(CorsConfigurer configurer) is renamed to
addCorsMappings(CorsRegistry registry)
- enableCors(String... pathPatterns) is renamed to
addMapping(String pathPattern)
- <cors /> element must have at least one <mapping /> child
element in order to be consistent with XML based configuration
and have more explicit configuration
Issues: SPR-12933, SPR-13046
This commit introduces support for this kind of CORS XML namespace configuration:
<mvc:cors>
<mvc:mapping path="/api/**"
allowed-origins="http://domain1.com, http://domain2.com"
allowed-methods="GET, PUT"
allowed-headers="header1, header2, header3"
exposed-headers="header1, header2" allow-credentials="false"
max-age="123" />
<mvc:mapping path="/resources/**" allowed-origins="http://domain1.com" />
</mvc:cors>
Issue: SPR-13046
This commit adds support for script based templating. Any templating
library running on top of a JSR-223 ScriptEngine that implements
Invocable like Nashorn or JRuby could be used.
For example, in order to render Mustache templates thanks to the Nashorn
Javascript engine provided with Java 8+, you should declare the following
configuration:
@Configuration
@EnableWebMvc
public class MustacheConfig extends WebMvcConfigurerAdapter {
@Override
public void configureViewResolvers(ViewResolverRegistry registry) {
registry.scriptTemplate();
}
@Bean
public ScriptTemplateConfigurer configurer() {
ScriptTemplateConfigurer configurer = new ScriptTemplateConfigurer();
configurer.setEngineName("nashorn");
configurer.setScripts("mustache.js");
configurer.setRenderObject("Mustache");
configurer.setRenderFunction("render");
return configurer;
}
}
The XML counterpart is:
<beans>
<mvc:annotation-driven />
<mvc:view-resolvers>
<mvc:script-template />
</mvc:view-resolvers>
<mvc:script-template-configurer engine-name="nashorn" render-object="Mustache" render-function="render">
<mvc:script location="mustache.js" />
</mvc:script-template-configurer>
</beans>
Tested with:
- Handlebars running on Nashorn
- Mustache running on Nashorn
- React running on Nashorn
- EJS running on Nashorn
- ERB running on JRuby
- String templates running on Jython
Issue: SPR-12266
This commit improves HTTP caching defaults and flexibility in
Spring MVC.
1) Better default caching headers
The `WebContentGenerator` abstract class has been updated with
better HTTP defaults for HTTP caching, in line with current
browsers and proxies implementation (wide support of HTTP1.1, etc);
depending on the `setCacheSeconds` value:
* sends "Cache-Control: max-age=xxx" for caching responses and
do not send a "must-revalidate" value by default.
* sends "Cache-Control: no-store" or "Cache-Control: no-cache"
in order to prevent caching
Other methods used to set specific header such as
`setUseExpiresHeader` or `setAlwaysMustRevalidate` are now deprecated
in favor of `setCacheControl` for better flexibility.
Using one of the deprecated methods re-enables previous HTTP caching
behavior.
This change is applied in many Handlers, since
`WebContentGenerator` is extended by `AbstractController`,
`WebContentInterceptor`, `ResourceHttpRequestHandler` and others.
2) New CacheControl builder class
This new class brings more flexibility and allows developers
to set custom HTTP caching headers.
Several strategies are provided:
* `CacheControl.maxAge(int)` for caching responses with a
"Cache-Control: max-age=xxx" header
* `CacheControl.noStore()` prevents responses from being cached
with a "Cache-Control: no-store" header
* `CacheControl.noCache()` forces caches to revalidate the cached
response before reusing it, with a "Cache-Control: no-store" header.
From that point, it is possible to chain method calls to craft a
custom CacheControl instance:
```
CacheControl cc = CacheControl.maxAge(1, TimeUnit.HOURS)
.cachePublic().noTransform();
```
3) Configuring HTTP caching in Resource Handlers
On top of the existing ways of configuring caching mechanisms,
it is now possible to use a custom `CacheControl` to serve
resources:
```
@Configuration
public class MyWebConfig extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
CacheControl cc = CacheControl.maxAge(1, TimeUnit.HOURS);
registry.addResourceHandler("/resources/**)
.addResourceLocations("classpath:/resources/")
.setCacheControl(cc);
}
}
```
or
```
<mvc:resources mapping="/resources/**" location="classpath:/resources/">
<mvc:cachecontrol max-age="3600" cache-public="true"/>
</mvc:resources>
```
Issue: SPR-2779, SPR-6834, SPR-7129, SPR-9543, SPR-10464
This change moves the resource-cache configuration to the
<resource-chain/> tag, since enabling/disabling resource cache should
be driven by a property or a SpEL expression.
So now that configuration can be set with XML attributes:
<mvc:resource-chain resource-cache="true"
cache-manager="resourceCache" cache-name="test-resource-cache">
In order to mirror the JavaConfig behavior, the "resource-cache"
attribute is required.
Issue: SPR-12129
This commit changes the way a <mvc:resource-cache> can be configured
with a user defined Cache instance.
Now a reference to a CacheManager Bean and a Cache name must be
provided. This is a more flexible configuration for typical XML setups.
<mvc:resource-cache
cache-manager="resourceCache"
cache-name="test-resource-cache"/>
Issue: SPR-12129
This change introduces a new <mvc:resource-chain/> tag that mirrors
the ResourceChainRegistration java config counterpart.
Resolvers and Transformers can be registered with bean/ref tags, and
specific tags have been created for <mvc:version-resovlver> and
<mvc:resource-cache> in order to make common configurations easier.
Note that a specific "auto-configuration" attribute on the
resource-chain allows to completely disable default registration of
Resolvers and Transformers (sane defaults considered by the Framework).
<mvc:resources mapping="/resources/**" location="/, classpath:/META-INF/">
<mvc:resource-chain>
<mvc:resource-cache cache="resourceCache"/>
<mvc:resolvers>
<mvc:version-resolver>
<mvc:fixed-version-strategy version="abc" patterns="/**/*.js"/>
<mvc:content-version-strategy patterns="/**"/>
</mvc:version-resolver>
</mvc:resolvers>
<mvc:transformers>
<bean class="org.springframework.web.servlet.resource.AppCacheManifestTransformer"/>
</mvc:transformers>
</mvc:resource-chain>
</mvc:resources>
This also fixes a typo in the class name of
AppCacheManifestResourceTransfo*r*mer.
Issue: SPR-12129
This change adds support for configuring redirect view controllers and
also status controllers to the MVC Java config and the MVC namespace.
Issue: SPR-11543
This commit improves and completes the initial MVC namespace
view resolution implementation. ContentNegotiatingViewResolver
registration is now also supported.
Java Config view resolution support has been added.
FreeMarker, Velocity and Tiles view configurers are registered
depending on the classpath thanks to an ImportSelector.
For both, a default configuration is provided and documented.
Issue: SPR-7093
