Tomcat传输文件数量大小异常

1、在使用Tomcat服务器的时候，默认是有传输数据大小的限制的。
会报一下的错误

2018-03-16 20:25:09.033  INFO 7260 --- [nio-8095-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-03-16 20:25:09.034  INFO 7260 --- [nio-8095-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2018-03-16 20:25:09.046  INFO 7260 --- [nio-8095-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 12 ms
2018-03-16 20:25:09.067 ERROR 7260 --- [nio-8095-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size exceeded; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (189756602) exceeds the configured maximum (10485760)] with root cause

org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (189756602) exceeds the configured maximum (10485760)
    at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:805) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    at org.apache.tomcat.util.http.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:256) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:280) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    at org.apache.catalina.connector.Request.parseParts(Request.java:2869) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    at org.apache.catalina.connector.Request.parseParameters(Request.java:3216) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    at org.apache.catalina.connector.Request.getParameter(Request.java:1137) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:381) ~[tomcat-embed-core-8.5.28.jar:8.5.28]
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:75) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.4.RELEASE.jar:5.0.4.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.28.jar:8.5.28]

2、需要在Tomcat配置中，配置单个文件的大小和请求的大小

@Configuration
public class TomcatConfig {

    @Value("${spring.server.MaxFileSize}")
    private String MaxFileSize;
    @Value("${spring.server.MaxRequestSize}")
    private String MaxRequestSize;

    @Bean
    public MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        //  单个数据大小
        factory.setMaxFileSize(MaxFileSize); // KB,MB
        /// 总上传数据大小
        factory.setMaxRequestSize(MaxRequestSize);
        return factory.createMultipartConfig();
    }
}

3、然后再在application.properties中进行配置

#文件请求大小
spring.server.MaxFileSize=300MB
spring.server.MaxRequestSize=500MB

**注意：**KB、MB……一定要带有B，不可以写K、M

4、就搞定了，重启就好了。