Spring4 Spring MVC实战（三）——Spring MVC不通过xml配置访问HMTL和其他静态资源

先看一下xml配置的，很多博客写出来都差不多，但是又不详细。
直接看一下老外的回答，How to handle static content in Spring MVC?


国内的博客里面一般就这样写。

<servlet>
    <servlet-name>springMVCservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    <load-on-startup>1load-on-startup>
    servlet>

    <servlet-mapping>
        <servlet-name>springMVCservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>

就写出一块，其实我们可以写的再详细点，贴个完整的路径和配置出来。

WebContent/WEB-INF/web.xml:

xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">


 <servlet>
  <servlet-name>springmvcservlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
  <load-on-startup>1load-on-startup>
 servlet>


 <servlet-mapping>
  <servlet-name>springmvcservlet-name>
  <url-pattern>/url-pattern>
 servlet-mapping>
web-app>

WebContent/WEB-INF/springmvc-servlet.xml:

xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 http://www.springframework.org/schema/mvc
 http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
 http://www.springframework.org/schema/context
 http://www.springframework.org/schema/context/spring-context-3.0.xsd">



 <context:component-scan base-package="springmvc.web" />



 <mvc:resources mapping="/resources/**" location="/resources/" />



 <bean      class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
 <bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
 bean>



 <bean id="viewResolver"
  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  <property name="viewClass"
   value="org.springframework.web.servlet.view.JstlView" />
  <property name="prefix" value="/WEB-INF/jsp/" />
  <property name="suffix" value=".jsp" />
 bean>


beans>

在Spring MVC实战（一）——读《Spring in action》搭建最简单的MVC中继承AbstractAnnotationConfigDispatcherServletInitializer的类自动的配置了DispatcherServlet和
spring的应用上下文。所以我是没在web.xml中配置任何东西的。


但是我又不想在xml配置之后才能访问到静态资源和HTML，找来找去没有我想要的，那怎么办，还是看文档。http://docs.spring.io/spring/docs/current/spring-framework-reference/html/mvc.html#mvc-config-enable
思路就是找到要搜索的关键词，static resource。


看到了文档中的HTTP caching support for static resources

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {


    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**")
                .addResourceLocations("/public-resources/")
                .setCacheControl(CacheControl.maxAge(1, TimeUnit.HOURS).cachePublic());
    }


}
And in XML:


<mvc:resources mapping="/resources/**" location="/public-resources/">
    <mvc:cache-control max-age="3600" cache-public="true"/>
mvc:resources>

由于CacheControl是4.2版本之后才有的，我当前是4.1版本，所以去除setCacheControl方法。
现在的整个WebConfig.java

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;


@Configuration
@EnableWebMvc
@ComponentScan("spittr.web")
public class WebConfig extends WebMvcConfigurerAdapter {


  @Bean
  public ViewResolver viewResolver() {
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/views/");
    resolver.setSuffix(".jsp");
    return resolver;
  }

  @Override
  public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
    configurer.enable();
  }

  @Override
  public void addResourceHandlers(ResourceHandlerRegistry registry) {
      registry.addResourceHandler("/static/**")
      .addResourceLocations("/static/");
  }
}

转载自：http://blog.csdn.net/iaiti/article/details/52778944