ContractConverter接口使您可以注册自己的合同结构转换器的实现。以下代码清单显示了ContractConverter接口：

package org.springframework.cloud.contract.spec

/**
 * Converter to be used to convert FROM {@link File} TO {@link Contract}
 * and from {@link Contract} to {@code T}
 *
 * @param <T >     - type to which we want to convert the contract
 *
 * @author Marcin Grzejszczak
 * @since 1.1.0
 */
interface ContractConverter<T> extends ContractStorer<T> {

	/**
	 * Should this file be accepted by the converter. Can use the file extension
	 * to check if the conversion is possible.
	 *
	 * @param file - file to be considered for conversion
	 * @return - {@code true} if the given implementation can convert the file
	 */
	boolean isAccepted(File file)

	/**
	 * Converts the given {@link File} to its {@link Contract} representation
	 *
	 * @param file - file to convert
	 * @return - {@link Contract} representation of the file
	 */
	Collection<Contract> convertFrom(File file)

	/**
	 * Converts the given {@link Contract} to a {@link T} representation
	 *
	 * @param contract - the parsed contract
	 * @return - {@link T} the type to which we do the conversion
	 */
	T convertTo(Collection<Contract> contract)
}

您的实现必须定义启动转换的条件。另外，您必须定义如何在两个方向上执行该转换。

创建实施后，必须创建一个/META-INF/spring.factories文件，在其中提供实施的完全限定名称。

以下示例显示了典型的spring.factories文件：

org.springframework.cloud.contract.spec.ContractConverter=\
org.springframework.cloud.contract.verifier.converter.YamlContractConverter