Spring MVC without configuration file
Create a dynamic web projectImplement your own WebApplicationInitializer
public class MyWebApplicationInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletCxt) {
// Load Spring web application configuration
AnnotationConfigWebApplicationContext ac = new AnnotationConfigWebApplicationContext();
ac.register(WebConfig.class, ViewConfig.class);
// Create and register the DispatcherServlet
DispatcherServlet servlet = new DispatcherServlet(ac);
ServletRegistration.Dynamic registration = servletCxt.addServlet("app", servlet);
registration.setLoadOnStartup(1);
registration.addMapping("*.do");
}
}
Implement WebMvcConfigurer
@Configuration
@EnableWebMvc
@ComponentScan("net.ly.blue.user")
public class WebConfig implements WebMvcConfigurer {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
System.out.println("------------------ addResourceHandlers");
registry.addResourceHandler("/resources/**").addResourceLocations("/public/").resourceChain(true)
.addResolver(new VersionResourceResolver().addContentVersionStrategy("/**"));
}
}
Add view resolver
@Configuration
public class ViewConfig {
@Bean
public ViewResolver urlBasedViewResolver() {
UrlBasedViewResolver viewResolver;
viewResolver = new UrlBasedViewResolver();
viewResolver.setOrder(2);
// viewResolver.setPrefix(""/WEB-INF/);
viewResolver.setSuffix(".jspx");
viewResolver.setViewClass(JstlView.class);
// for debug envirment
viewResolver.setCache(false);
return viewResolver;
}
@Bean
public ViewResolver resourceViewResolver() {
InternalResourceViewResolver viewResolver=new InternalResourceViewResolver();
viewResolver.setOrder(1);
viewResolver.setPrefix("");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
}
Write a simple controller
package net.ly.blue.user;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping("/sayHello")
public class HelloController {
@RequestMapping(method = RequestMethod.GET)
public String printHello(ModelMap model) {
model.addAttribute("message", "Hello Spring MVC Framework!");
System.out.println("enter hello");
return "hello";
}
}
Project structure
