使用JavaConfig配置SpringMVC
2024-10-07 20:11:53
目录结构
web.xml：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<!-- Configure ContextLoaderListener to use AnnotationConfigWebApplicationContext
instead of the default XmlWebApplicationContext -->
<context-param>
<param-name>contextClass</param-name>
<param-value>
org.springframework.web.context.support.AnnotationConfigWebApplicationContext
</param-value>
</context-param>
<!-- Configuration locations must consist of one or more comma- or space-delimited
fully-qualified @Configuration classes. Fully-qualified packages may also be
specified for component-scanning -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>springdemo.config.AppConfig</param-value>
</context-param>
<!-- Bootstrap the root application context as usual using ContextLoaderListener -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Declare a Spring MVC DispatcherServlet as usual -->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- Configure DispatcherServlet to use AnnotationConfigWebApplicationContext
instead of the default XmlWebApplicationContext -->
<init-param>
<param-name>contextClass</param-name>
<param-value>
org.springframework.web.context.support.AnnotationConfigWebApplicationContext
</param-value>
</init-param>
<!-- Again, config locations must consist of one or more comma- or space-delimited
and fully-qualified @Configuration classes -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>springdemo.config.MvcConfig</param-value>
</init-param>
</servlet>
<!-- map all requests for /app/* to the dispatcher servlet -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
SpringMVC配置类：
@EnableWebMvc
@Configuration
@ComponentScan(basePackages={"springdemo.controller"})
public class MvcConfig {
/**
* 配置JSP视图解析器
* @return
*/
@Bean
public ViewResolver viewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}
/**
* 配置默认的Servlet来处理静态资源
* @return
*/
@Bean
public WebMvcConfigurerAdapter webMvcConfigurerAdapter(){
return new WebMvcConfigurerAdapter() {
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
};
}
}
Controller：
@Controller
public class CoffeeController {
@RequestMapping(value="/show",method=RequestMethod.GET)
public String showCoffee(){
return "coffee";
}
}
测试类：
@RunWith(SpringRunner.class)
@WebAppConfiguration
@ContextConfiguration(classes={MvcConfig.class})
public class CoffeeTest {
private MockMvc mockMvc;
@Autowired
private WebApplicationContext wac;
@Before
public void init(){
mockMvc = MockMvcBuilders.webAppContextSetup(wac).build();
}
@Test
public void testShowCoffee() throws Exception{
ResultActions resultActions = mockMvc.perform(MockMvcRequestBuilders.get("/show"));
resultActions.andExpect(MockMvcResultMatchers.view().name("coffee"));
}
}
可以选择继承AbstractAnnotationConfigDispatcherServletInitializer来替换web.xml中的配置：
public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer{
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[]{AppConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[]{MvcConfig.class};
}
@Override
protected String[] getServletMappings() {
return new String[]{"/"};
}
}
pom.xml ：Spring pom.xml配置
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