技術標籤：專案中的問題javaspring boot

FeignClient 呼叫服務端時，服務端報錯:Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method ‘POST’ not supported]

FeignClient 端

@GetMapping("/purchasingOrder/selectAllPurchasingOrderForJointQuery")
    CommonResult<PageInfo<PurchasingOrder>
 
> selectAllPurchasingOrderForJointQuery(
	    @RequestParam("page") Integer page,
	    @RequestParam("pageSize") Integer pageSize,
	    @RequestBody PurchasingOrder purchasingOrder);

被呼叫服務端

@GetMapping("/purchasingOrder/selectAllPurchasingOrderForJointQuery")
public CommonResult<
 
PageInfo<PurchasingOrder>> selectAllPurchasingOrderForJointQuery(
										@RequestParam("page") Integer page,
										@RequestParam("pageSize") Integer pageSize,
										@RequestBody PurchasingOrder purchasingOrder){
	return purchasingOrderService.selectAllPurchasingOrderForJointQuery
 
(page, pageSize, purchasingOrder);
}

報錯：

Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported]

說不支援Post請求，但是我FeignClient 端用的是Get請求，服務端用的也是Get請求，為什麼會報錯不支援Post請求呢？
而我把客戶端和服務端都改成Post請求後，就解決問題了。

原因：

因為我FeignClient 端的請求引數是@RequestBody PurchasingOrder purchasingOrder，當把物件轉換為json字串的時候 FeignClient會預設傳送Post請求

解決方法

1、如果使用@RequestBody 註解，把客戶端與服務端都改為Post請求
2、如果非要用Get傳送物件型別引數，可以使用@SpringQueryMap註解，前提是的springboot 2.2版本以上，它的作用是直接以物件的形式傳參，服務端可直接用以下方式接收引數：

@GetMapping("/purchasingOrder/selectAllPurchasingOrderForJointQuery")
public CommonResult<PageInfo<PurchasingOrder>> selectAllPurchasingOrderForJointQuery(
										@RequestParam("page") Integer page,
										@RequestParam("pageSize") Integer pageSize,
										PurchasingOrder purchasingOrder){
	return purchasingOrderService.selectAllPurchasingOrderForJointQuery(page, pageSize, purchasingOrder);
}