WireMock允许您注册自定义扩展。默认情况下，Spring Cloud Contract注册该转换器，使您可以引用响应中的请求。如果要提供自己的扩展，则可以注册org.springframework.cloud.contract.verifier.dsl.wiremock.WireMockExtensions接口的实现。由于我们使用spring.factories扩展方法，因此可以在META-INF/spring.factories文件中创建一个类似于以下内容的条目：

org.springframework.cloud.contract.verifier.dsl.wiremock.WireMockExtensions=\
org.springframework.cloud.contract.stubrunner.provider.wiremock.TestWireMockExtensions
org.springframework.cloud.contract.spec.ContractConverter=\
org.springframework.cloud.contract.stubrunner.TestCustomYamlContractConverter

以下是自定义扩展的示例：

TestWireMockExtensions.groovy。 

/*
 * Copyright 2013-2019 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.cloud.contract.verifier.dsl.wiremock

import com.github.tomakehurst.wiremock.extension.Extension

/**
 * Extension that registers the default transformer and the custom one
 */
class TestWireMockExtensions implements WireMockExtensions {
	@Override
	List<Extension> extensions() {
		return [
				new DefaultResponseTransformer(),
				new CustomExtension()
		]
	}
}

class CustomExtension implements Extension {

	@Override
	String getName() {
		return "foo-transformer"
	}
}

如果要将转换仅应用于明确需要它的映射，请记住重写applyGlobally()方法并将其设置为false。