如何摆脱<mvc:annotation-driven/>? [英] Howto get rid of <mvc:annotation-driven />?

问题描述

到目前为止，给我带来了很多麻烦，所以我想摆脱它.虽然 spring 框架文档清楚地说明它应该做什么，实际上缺少总结 <mvc:annotation-driven/> 的标签列表.

所以我坚持删除 <mvc:annotation-driven/> 现在得到错误

<块引用>

警告 o.s.web.servlet.PageNotFound -未找到 HTTP 请求的映射URI [/webapp/trainees] 在带名称的 DispatcherServlet'锻炼传感器'

对于所有应该由控制器类解析的 URL(在本例中:./trainees).有什么建议可以让我阅读更多关于 <mvc:annotation-driven/> 的信息?我非常想知道 <mvc:annotation-driven/> 到底代表了什么标签.

解决方案

您可以使用 BeanPostProcessor 自定义每个由 <mvc:annotation-driven/>.javadocs 现在详细说明了标记注册的所有 bean.

如果你真的想摆脱它，你可以看一下org.springframework.web.servlet.config.AnnotationDrivenBeanDefinitionParser

你可以看到它定义了哪些 bean.我已经完成了这项锻炼"(不是针对所有人，而是针对我需要的那些人)，所以它们是:

<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"/><bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"><属性名称=webBindingInitializer"><bean class="com.yourpackage.web.util.CommonWebBindingInitializer"/></属性><属性名称="messageConverters"><列表><bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/><bean class="org.springframework.http.converter.ResourceHttpMessageConverter"/><bean class="org.springframework.http.converter.StringHttpMessageConverter"/><bean class="org.springframework.http.converter.feed.AtomFeedHttpMessageConverter"/><bean class="org.springframework.http.converter.feed.RssChannelHttpMessageConverter"/><bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/><bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter"/><bean class="org.springframework.http.converter.xml.XmlAwareFormHttpMessageConverter"/><!-- bean class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter"/--></list></属性></bean><bean id="handlerMapping"class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">

现在，您可以在上方看到 CommonWebBindingInitializer.您必须创建此类，才能使用转换和验证:

公共类 CommonWebBindingInitializer 实现 WebBindingInitializer {@自动连线私有验证器验证器；@自动连线私有 ConversionService 转换服务；@覆盖公共无效initBinder(WebDataBinder绑定器，WebRequest请求){binder.setValidator(验证器)；binder.setConversionService(conversionService);}}

到目前为止，这对我来说很好用.如有任何问题，请随时报告.

Up to now, <mvc:annotation-driven /> has caused plenty of trouble for me, so I would like to get rid of it. Although the spring framework docs clearly say what it is supposed to be doing, a listing of tags actually summar <mvc:annotation-driven /> is lacking.

So I'm stuck with removing <mvc:annotation-driven /> and now getting the error

WARN o.s.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/webapp/trainees] in DispatcherServlet with name 'workoutsensor'

for all Urls supposed to be resolved by the controller classes (in this case: ./trainees). Any suggestion where I can read more about <mvc:annotation-driven />? I desperately would like to know what tags exactly are represented by <mvc:annotation-driven />.

解决方案

You can use BeanPostProcessor to customize each bean defined by <mvc:annotation-driven />. The javadocs now details all beans the tag registers.

If you really want to get rid of it, you can look at the source code of org.springframework.web.servlet.config.AnnotationDrivenBeanDefinitionParser

And you can see which beans it is defining. I've done this 'exercise' (not for all of them, but for those I need), so here are they:

<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />
<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean" />

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="webBindingInitializer">
            <bean class="com.yourpackage.web.util.CommonWebBindingInitializer" />
        </property>
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" />
                <bean class="org.springframework.http.converter.ResourceHttpMessageConverter" />
                <bean class="org.springframework.http.converter.StringHttpMessageConverter" />
                <bean class="org.springframework.http.converter.feed.AtomFeedHttpMessageConverter" />
                <bean class="org.springframework.http.converter.feed.RssChannelHttpMessageConverter" />
                <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
                <bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter" />
                <bean class="org.springframework.http.converter.xml.XmlAwareFormHttpMessageConverter" />
                <!-- bean class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter" /-->
            </list>
        </property>
    </bean>
<bean id="handlerMapping"
    class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">

Now, above you see the CommonWebBindingInitializer. You have to create this class, in order to use conversion and validation:

public class CommonWebBindingInitializer implements WebBindingInitializer {

    @Autowired
    private Validator validator;

    @Autowired
    private ConversionService conversionService;

    @Override
    public void initBinder(WebDataBinder binder, WebRequest request) {
        binder.setValidator(validator);
        binder.setConversionService(conversionService);
    }

}

And this works fine for me so far. Feel free to report any problems with it.

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