解除Spring-Boot上传图片大小的限制

• 由spring官方文档可知，spring-boot在MultipartProperties配置文件中对最大上传大小做了限制需要在启动时增加一个配置类
• 在启动类里增加以下类即可解决问题

/**
     * 解除上传文件的限制
     */
    @Configuration
    @ConditionalOnClass({Servlet.class, StandardServletMultipartResolver.class,
            MultipartConfigElement.class})
    @ConditionalOnProperty(prefix = "spring.http.multipart", name = "enabled", matchIfMissing = true)
    @EnableConfigurationProperties(MultipartProperties.class)
    public class MultipartAutoConfiguration {

        private final MultipartProperties multipartProperties;

        public MultipartAutoConfiguration(MultipartProperties multipartProperties) {
            this.multipartProperties = multipartProperties;
            multipartProperties.setMaxFileSize("-1");
        }

        @Bean
        @ConditionalOnMissingBean
        public MultipartConfigElement multipartConfigElement() {
            return this.multipartProperties.createMultipartConfig();
        }

        @Bean(name = DispatcherServlet.MULTIPART_RESOLVER_BEAN_NAME)
        @ConditionalOnMissingBean(MultipartResolver.class)
        public StandardServletMultipartResolver multipartResolver() {
            StandardServletMultipartResolver multipartResolver = new StandardServletMultipartResolver();
            multipartResolver.setResolveLazily(this.multipartProperties.isResolveLazily());
            return multipartResolver;
        }

    }

以上参考springboot官方文档