在Spring Boot中，如何注册解析应用程序配置时可用的自定义转换器？

import org.springframework.core.convert.converter.Converter;

public class CustomConverter implements Converter<String, CustomType> {

    @Override
    public CustomType convert(String source) {
        // 在这里实现自定义的转换逻辑
        // 将源类型的对象转换为目标类型的对象
        CustomType result = new CustomType();
        // ...
        return result;
    }
}

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableConfigurationProperties(AppProperties.class)
public class AppConfig {
    // 配置类的其他内容...
}

import org.springframework.context.annotation.Bean;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.support.DefaultConversionService;

@Configuration
@EnableConfigurationProperties(AppProperties.class)
public class AppConfig {

    @Bean
    public ConversionService conversionService() {
        DefaultConversionService conversionService = new DefaultConversionService();
        conversionService.addConverter(new CustomConverter());
        return conversionService;
    }

    // 配置类的其他内容...
}

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.ConstructorBinding;

@ConfigurationProperties("app")
@ConstructorBinding
public class AppProperties {
    private final CustomType customType;

    public AppProperties(CustomType customType) {
        this.customType = customType;
    }

    public CustomType getCustomType() {
        return customType;
    }
}