WebConfig.java

package de.is24.infrastructure.gridfs.http.web;

import de.is24.infrastructure.gridfs.http.web.exception.MessageAwareResponseStatusExceptionResolver;
import de.is24.infrastructure.gridfs.http.web.logging.LoggingHandlerInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.ByteArrayHttpMessageConverter;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.ResourceHttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.http.converter.xml.SourceHttpMessageConverter;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import java.util.List;


@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {
  @Override
  public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
    configurer.enable();
  }

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

  @Override
  public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
    converters.add(new ByteArrayHttpMessageConverter());

    StringHttpMessageConverter stringConverter = new StringHttpMessageConverter();
    stringConverter.setWriteAcceptCharset(false);
    converters.add(stringConverter);

    converters.add(new ResourceHttpMessageConverter());
    converters.add(new SourceHttpMessageConverter<>());

    MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
    converter.setPrettyPrint(true);
    converters.add(converter);
  }

  @Override
  public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {
    exceptionResolvers.add(new MessageAwareResponseStatusExceptionResolver());
    exceptionResolvers.add(new ExceptionHandlerExceptionResolver());
  }

  @Override
  public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(new LoggingHandlerInterceptor());
    registry.addInterceptor(new TrailingSlashRedirectHandlerInterceptor());
  }

  @Override
  public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
    configurer.favorParameter(false).favorPathExtension(true);
  }

}