Required request parameter 'code' for method parameter type String is not present

回答: 发生"Required request parameter 'code' for method parameter type String is not present"的错误通常是由于没有向后端传递所需的参数值造成的。这可能是因为参数值为空或不存在导致的。另外，还需要检查前端请求方式和后端接收方式是否一致。例如，如果前端使用get params进行请求，则后端应使用@GetMapping @RequestParam来接收数据；如果前端使用post data进行请求，则后端应使用@PostMapping @RequestBody来接收数据。请确保参数变量已经定义并且有值。关于Axios请求和Java后端接收的详细信息，可以参考中提供的文章链接。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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