Spring Boot——多文件上传大小超限问题解决

Myth丶恋晨 2022-04-15 05:37 307阅读 0赞

org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field fileName exceeds its maximum permitted size of 1048576 bytes.

Spring Boot默认文件上传大小为2M，多文档上传中总是出现文件大小超出限度

**解决方法：**

a、在application.properties文件中设置文件大小

# Single file max size  
    multipart.maxFileSize=50Mb
    # All files max size  
    multipart.maxRequestSize=50Mb

但是，事实证明此种方法不能够解决以上问题

b、在启动类App.class文件中配置Bean来设置文件大小

![复制代码][copycode.gif]

import javax.servlet.MultipartConfigElement;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.web.servlet.MultipartConfigFactory;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    /**
     * Hello world!
     *
     */
    @SpringBootApplication
    @Configuration
    public class App 
    {
        public static void main( String[] args )
        {
            System.out.println( "Hello World!" );
            SpringApplication.run(App.class, args);
        }
        
        /**  
         * 文件上传配置  
         * @return  
         */  
        @Bean  
        public MultipartConfigElement multipartConfigElement() {  
            MultipartConfigFactory factory = new MultipartConfigFactory();  
            //单个文件最大  
            factory.setMaxFileSize("10240KB"); //KB,MB  
            /// 设置总上传数据总大小  
            factory.setMaxRequestSize("102400KB");  
            return factory.createMultipartConfig();  
        }  
    }

[copycode.gif]: /images/20220415/32ffd2ca235c4952a9c24bf3c1ed5261.png