spring boot 上传文件时报 The field apkFile exceeds its maximum permitted size of 31457280 bytes.

蔚落 2022-02-24 03:04 258阅读 0赞

**1、问题：**今天在spring boot 上传31M的文件，报下面的错误

org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field apkFile exceeds its maximum permitted size of 31457280 bytes.
    	at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl$FileItemStreamImpl$1.raiseError(FileUploadBase.java:630) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    	at org.apache.tomcat.util.http.fileupload.util.LimitedInputStream.checkLimit(LimitedInputStream.java:76) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    	at org.apache.tomcat.util.http.fileupload.util.LimitedInputStream.read(LimitedInputStream.java:135) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    	at java.io.FilterInputStream.read(FilterInputStream.java:107) ~[na:1.8.0_161]

**2、原因：**

因为spring boot 默认对上传进行了限制。我们上传29M的时候，是没有问题的。

**3、修改方式：**

1）配置文件 application.properties 增加如下内容：

spring.servlet.multipart.enabled =true
    spring.servlet.multipart.file-size-threshold =0
    spring.servlet.multipart.max-file-size=100Mb
    spring.servlet.multipart.max-request-size=100Mb

2） 启动类，增加如下代码

@SpringBootApplication
    @EnableCaching
    @EnableTransactionManagement
    public class ManagerApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(ManagerApplication.class, args);
    	}
    
    	/**
    	 * 配置上传文件大小的配置
    	 * @return
    	 */
    	@Bean
    	public MultipartConfigElement multipartConfigElement() {
    		MultipartConfigFactory factory = new MultipartConfigFactory();
    		//  单个数据大小
    		factory.setMaxFileSize("102400KB");
    		/// 总上传数据大小
    		factory.setMaxRequestSize("102400KB");
    		return factory.createMultipartConfig();
    	}
    
    }

设置完成后，上传没有问题