@PathVariable注解的使用

@PathVariable注解用于将URL中的占位符参数绑定到控制器处理方法的入参中。一般与@RequestMapping(method = RequestMethod.GET)一起使用。通过在@RequestMapping注解中指定占位符的名称，再在@PathVariable注解中指定对应的参数名称，可以将URL中的占位符参数绑定到方法的入参中。这样，在请求"/getUserById/John"时，方法的入参name将会自动被赋值为"John"，可以在方法体中使用这个参数进行相应的逻辑处理。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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