publicResponseEntity<User> getUserById( @PathVariable(value ="id", required =true) Long userId, @PathVariable(value ="name", required =false, defaultValue ="John") String userName ) { // ... } 在上述示例中,userId 是必需的路徑變量,而 userName 是可選的路徑變量,如果未提供或?yàn)榭?則將使用...
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