Solve the spring boot request error The valid characters are defined in RFC 7230 and RFC 3986

Problem Description

The spring boot request url path has a special character error: java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986

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Cause Analysis:

The problem is that the higher version of tomcat will filter the request header.

The new feature in the high version of tomcat: it is to strictly follow the RFC 3986 specification for access analysis, and the RFC 3986 specification defines that only English letters (a-zA-Z), numbers (0-9), -_.~ are allowed in Url 4 special characters and all reserved characters (RFC3986 specifies the following characters as reserved characters: ! * ' ( ) ; : @ & = + $ , / ? # [ ] )
 

springboot integrates tomcat by default, and tomcat will report an error when your front-end sends a request and there are reserved special characters in the request parameters

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solution:

Create a new TomcatConfig class in config

@Configuration
public class TomcatConfig {
    @Bean
    public TomcatServletWebServerFactory webServerFactory() {
        TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
        factory.addConnectorCustomizers((Connector connector) -> {
            connector.setProperty("relaxedPathChars", "\"<>[\\]^`{|}");
            connector.setProperty("relaxedQueryChars", "\"<>[\\]^`{|}");
        });
        return factory;
    }
}