[GitHub] [servicecomb-java-chassis] five111 commented on issue #2556: path的参数解析

[GitBox <gi...@apache.org>]

five111 commented on issue #2556:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2556#issuecomment-914982267


   spring在处理path参数的时候
   通过HandlerMethodArgumentResolverComposite装载PathVariableMethodArgumentResolver这个类
   对传参类型和目标参数类型进行判断 最后通过StringToArrayConverter 中的convert方法 实现将参数由含“，”的字符串改造成目标的数组
   `
   	@Override
   	@Nullable
   	public Object convert(@Nullable Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
   		if (source == null) {
   			return null;
   		}
   		String string = (String) source;
                   // 这一步做的转化
   		String[] fields = StringUtils.commaDelimitedListToStringArray(string);
   		TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
   		Assert.state(targetElementType != null, "No target element type");
   		Object target = Array.newInstance(targetElementType.getType(), fields.length);
   		for (int i = 0; i < fields.length; i++) {
   			String sourceElement = fields[i];
   			Object targetElement = this.conversionService.convert(sourceElement.trim(), sourceType, targetElementType);
   			Array.set(target, i, targetElement);
   		}
   		return target;
   	}
   
   }
   `
   servicecomb中有没有类似的机制去处理这些参数？
   我在 swagger-invocation-core中看到了类似的的 Converter的类，例如FileToPartConverter， 是否有可以拓展的机制？


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