SpringBoot URL带有特殊字符([]/{}等),报400错误的解决

@Configuration
public class XxxConfig   {
    @Bean
    public ServletWebServerFactory webServerFactory() {
        TomcatServletWebServerFactory fa = new TomcatServletWebServerFactory();
        fa.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> connector.setProperty("relaxedQueryChars", "[]{}"));
        return fa;
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class SigncallbackApplication {
    public static void main(String[] args) {
        SpringApplication.run(SigncallbackApplication.class, args);
    }
    @Bean
    public TomcatServletWebServerFactory tomcatServletWebServerFactory (){
        // 修改内置的 tomcat 容器配置
        TomcatServletWebServerFactory tomcatServlet = new TomcatServletWebServerFactory();
        tomcatServlet .addConnectorCustomizers(
                (TomcatConnectorCustomizer) connector -> connector.setProperty("relaxedQueryChars", "[]{}")
        );
        return tomcatServlet ;
    }
}

import com.alibaba.fastjson.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.*;
/**
 * @author: ma dengling
 * @create: 2020-04-13 11:09
 * @Desc:
 */
@RestController
@RequestMapping(value = {"/signcallback1"})
public class TpnHtqzLogController1 {
    private static final Logger log = LoggerFactory.getLogger(TpnHtqzLogController1.class);
    @RequestMapping(value = "/htqz_log")
    public String htqzLog(String jsonString) {
        log.info(jsonString);
        JSONObject jsonObject = JSONObject.parseObject(jsonString);
        String callBackAction = jsonObject.getString("action");
        return callBackAction;
    }
}