Spring Boot——多文件上传大小超限问题解决

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

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();
}
}