springboot怎么配置上传文件大小

在Spring Boot中配置上传文件大小限制有两种方法：

application.properties/application.yml文件中配置：可以在application.properties或application.yml文件中添加如下配置来限制上传文件的大小：

# 设置最大文件上传大小spring.servlet.multipart.max-file-size=10MB# 设置最大请求大小spring.servlet.multipart.max-request-size=10MB

使用Java配置类配置：创建一个配置类，继承WebMvcConfigurerAdapter，并重写configure方法：

@Configurationpublic class WebMvcConfig extends WebMvcConfigurerAdapter {    @Override    public void addResourceHandlers(ResourceHandlerRegistry registry) {        registry.addResourceHandler("/uploads/**")                .addResourceLocations("file:/path/to/upload/folder/")                .setCachePeriod(0);    }    @Override    public void configurePathMatch(PathMatchConfigurer configurer) {        UrlPathHelper urlPathHelper = new UrlPathHelper();        urlPathHelper.setRemoveSemicolonContent(false);        configurer.setUrlPathHelper(urlPathHelper);    }    @Override    public void configurePathMatch(PathMatchConfigurer configurer) {        UrlPathHelper urlPathHelper = new UrlPathHelper();        urlPathHelper.setRemoveSemicolonContent(false);        configurer.setUrlPathHelper(urlPathHelper);    }    @Override    public void addResourceHandlers(ResourceHandlerRegistry registry) {        registry.addResourceHandler("/uploads/**")                .addResourceLocations("file:/path/to/upload/folder/")                .setCachePeriod(0);    }    @Override    public void configurePathMatch(PathMatchConfigurer configurer) {        UrlPathHelper urlPathHelper = new UrlPathHelper();        urlPathHelper.setRemoveSemicolonContent(false);        configurer.setUrlPathHelper(urlPathHelper);    }}

以上两种方法可以实现对上传文件大小的限制。