解决spring boot网关gateway导致的坑,无法下载文件问题

接口返回内容，浏览器显示PDF文档。但是输入接口地址以后一直提示这个

核对接口路径也是正确的，并且没有报错提示，后面发现是网关没有配置放行路径，于是进行了补充

所以 以后对于前端请求统一由网关进行配置处理的，一定要对于静态资源合理配置，或者对于放行接口要统一补充进来(最后统一一下下接口前缀名称，这样就只需要写一个了)

spring cloud gateway启动报错：org.springframework.cloud.gateway.config.GatewayAutoConfiguration

springcloud 启动一直报错 详细错误信息

Parameter 0 of method modifyRequestBodyGatewayFilterFactory in org.springframework.cloud.gateway.config.GatewayAutoConfiguration required a bean of type ’org.springframework.http.codec.ServerCodecConfigurer’ that could not be found.

Action:

Consider defining a bean of type ’org.springframework.http.codec.ServerCodecConfigurer’ in your configuration.

将pom文件中的spring-boot-starter-web 移除

点进去 GatewayAutoConfiguration 这个类

@Beanpublic ModifyRequestBodyGatewayFilterFactory modifyRequestBodyGatewayFilterFactory(ServerCodecConfigurer codecConfigurer) { return new ModifyRequestBodyGatewayFilterFactory(codecConfigurer.getReaders());}@Beanpublic DedupeResponseHeaderGatewayFilterFactory dedupeResponseHeaderGatewayFilterFactory() { return new DedupeResponseHeaderGatewayFilterFactory();}@Beanpublic ModifyResponseBodyGatewayFilterFactory modifyResponseBodyGatewayFilterFactory(ServerCodecConfigurer codecConfigurer, Set<MessageBodyDecoder> bodyDecoders, Set<MessageBodyEncoder> bodyEncoders) { return new ModifyResponseBodyGatewayFilterFactory(codecConfigurer.getReaders(), bodyDecoders, bodyEncoders);}

确实需要这个bean

spring cloud gateway server项目是一个spring boot项目，在启动的时候会去加载它的配置，其中有一个叫做GatewayClassPathWarningAutoConfiguration的配置类 代码入下

@Configuration( proxyBeanMethods = false)//在 GatewayAutoConfiguration 执行执行 @AutoConfigureBefore({GatewayAutoConfiguration.class})public class GatewayClassPathWarningAutoConfiguration { private static final Log log = LogFactory.getLog(GatewayClassPathWarningAutoConfiguration.class); private static final String BORDER = 'nn**********************************************************nn'; public GatewayClassPathWarningAutoConfiguration() { } @Configuration(proxyBeanMethods = false ) @ConditionalOnMissingClass({'org.springframework.web.reactive.DispatcherHandler'}) protected static class WebfluxMissingFromClasspathConfiguration {public WebfluxMissingFromClasspathConfiguration() { GatewayClassPathWarningAutoConfiguration.log.warn('nn**********************************************************nnSpring Webflux is missing from the classpath, which is required for Spring Cloud Gateway at this time. Please add spring-boot-starter-webflux dependency.nn**********************************************************nn');} } @Configuration(proxyBeanMethods = false ) @ConditionalOnClass(name = {'org.springframework.web.servlet.DispatcherServlet'} ) protected static class SpringMvcFoundOnClasspathConfiguration {public SpringMvcFoundOnClasspathConfiguration() { GatewayClassPathWarningAutoConfiguration.log.warn('nn**********************************************************nnSpring MVC found on classpath, which is incompatible with Spring Cloud Gateway at this time. Please remove spring-boot-starter-web dependency.nn**********************************************************nn');} }}

我们pom中依赖了spring-boot-starter-web 也就是存在

org.springframework.web.servlet.DispatcherServlet

此时这个 与Spring Cloud Gateway不兼容

spring cloud gateway是基于webflux的，如果需要web支持的话需要导入spring-boot-starter-webflux取代spring-boot-start-web。

以上为个人经验，希望能给大家一个参考，也希望大家多多支持好吧啦网。