Required request parameter 'emissionTypeId' for method parameter type Long is not present

回答: 根据您提供的引用内容，问题出现在Controller层的注解使用上。根据\[1\]中的描述，@RequestParam注解不支持POST请求，而您在使用@RequestParam注解时出现了问题。另外，根据\[2\]中的示例，如果您需要接收一个Long类型的参数，可以考虑使用@PathVariable注解或者@RequestBody注解。根据\[3\]中的描述，还需要确认前端请求时参数的编码格式是urlencode还是json编码格式。综上所述，您可以尝试使用@PathVariable注解或者@RequestBody注解来接收Long类型的参数，并确保前端请求时参数的编码格式正确。
#### 引用[.reference_title]
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