SpringBoot Undertow/Tomcat报错：Invalid character | in request-target

本问题核心原因是http协议升级，因为网络安全问题日益严峻，RFC组织决定将RFC2616拆分并进行升级。

RFC2616拆分后：

• RFC7230 - HTTP/1.1: Message Syntax and Routing - low-level message parsing and connection management
• RFC7231 - HTTP/1.1: Semantics and Content - methods, status codes and headers
• RFC7232 - HTTP/1.1: Conditional Requests - e.g., If-Modified-Since
• RFC7233 - HTTP/1.1: Range Requests - getting partial content
• RFC7234 - HTTP/1.1: Caching - browser and intermediary caches
• RFC7235 - HTTP/1.1: Authentication - a framework for HTTP authentication

今天出现问题的主角也和上面有关，还涉及一个协议

RFC 3986 - Uniform Resource Identifier (URI): Generic Syntax

 

因为防止sql注入，新RFC将|视为非法路径符号。

解决方法如下：

undertow RFC 7230 and RFC 3986 compatibility 

 

代码

    @Bean
    public ConfigurableServletWebServerFactory webServerFactory() {
        UndertowServletWebServerFactory factory =new UndertowServletWebServerFactory();
        
        factory.addBuilderCustomizers(builder -> builder.setServerOption(UndertowOptions.ALLOW_UNESCAPED_CHARACTERS_IN_URL, Boolean.TRUE)); //url配置
        factory.addBuilderCustomizers(builder -> builder.setServerOption(UndertowOptions.ALLOW_EQUALS_IN_COOKIE_VALUE, Boolean.TRUE));
        factory.addBuilderCustomizers(builder -> builder.setServerOption(UndertowOptions.ALLOW_ENCODED_SLASH,Boolean.TRUE));
        return factory;
    }

参考资料：https://my.oschina.net/qinerg/blog/3122953

Tomcat解决办法：

@Bean
public ConfigurableServletWebServerFactory webServerFactory() {
    TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
    factory.addConnectorCustomizers(new TomcatConnectorCustomizer() {
        @Override
        public void customize(Connector connector) {
            connector.setProperty("relaxedQueryChars", "|{}[]");
        }
    });
    return factory;
}

参考：https://stackoverflow.com/questions/46251131/invalid-character-found-in-the-request-target-in-spring-boot