@Bean
    public ShenyuPlugin paramMappingPlugin(final ServerCodecConfigurer configurer) {
        Map<String, Operator> operatorMap = new HashMap<>(4);
        operatorMap.put(Constants.DEFAULT, new DefaultOperator());
        operatorMap.put(MediaType.APPLICATION_JSON.toString(), new JsonOperator(configurer.getReaders()));
        operatorMap.put(MediaType.APPLICATION_FORM_URLENCODED.toString(), new FormDataOperator());
        return new ParamMappingPlugin(operatorMap);
    }
Param mapping plugin.

@param configurer configurer
@return the shenyu plugin
shenyu-spring-boot-starter/shenyu-spring-boot-starter-plugin/shenyu-spring-boot-starter-plugin-param-mapping/src/main/java/org/apache/shenyu/springboot/starter/plugin/param/mapping/ParamMappingPluginConfiguration.java