springboot 的一般配置

 import javax.servlet.Filter;

 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.web.MultipartAutoConfiguration;
 import org.springframework.boot.builder.SpringApplicationBuilder;
 import org.springframework.boot.context.web.SpringBootServletInitializer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
 import org.springframework.web.filter.CharacterEncodingFilter;
 import org.springframework.web.filter.HttpPutFormContentFilter;
 import org.springframework.web.multipart.commons.CommonsMultipartResolver;

 //exclude表示自动配置时不包括Multipart配置
 @EnableAutoConfiguration(exclude = {MultipartAutoConfiguration.class})
 @SpringBootApplication
 @EnableTransactionManagement
 public class Application extends SpringBootServletInitializer {

     @Override
     protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
         return application.sources(Application.class);
     }

     @Bean
     public Filter initializeHttpPutHandler() {
         return new HttpPutFormContentFilter();
     }

     @Bean
     public CharacterEncodingFilter initializeCharacterEncodingFilter() {
         CharacterEncodingFilter filter = new CharacterEncodingFilter();
         filter.setEncoding("UTF-8");
         filter.setForceEncoding(true);
         return filter;
     }

     @Bean(name = "multipartResolver")
     public CommonsMultipartResolver multipartResolver() {
         CommonsMultipartResolver resolver = new CommonsMultipartResolver();
         resolver.setDefaultEncoding("UTF-8");
         resolver.setResolveLazily(true);// resolveLazily属性启用是为了推迟文件解析
         resolver.setMaxInMemorySize(40960);
         resolver.setMaxUploadSize(50 * 1024 * 1024);// 上传文件大小 50M 50*1024*1024
         return resolver;
     }

     public static void main(String[] args) throws Exception {
         SpringApplication.run(Application.class, args);
     }

 }