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Access to XMLHttpRequest at 'http://localhost:8080/user/getotp' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

試了大家提的方法了，前端瀏覽器發起請求還是報跨域的錯。后端接口用postman測試是??的。嗚嗚嗚~

慕虎0442353

2021-09-09

源自：SpringBoot構建電商基礎秒殺項目 3-11

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慕虎0442353 提問者
2021-09-09

對不起，是我大意了。我發現我后端寫成了getopt，前端請求的卻是getotp~~我現在可以正確發送驗證碼了。然后我做的唯一修改就是：

@CrossOrigin(allowCredentials?=?"true",allowedHeaders?=?"*",?originPatterns?="*")

1 回復有任何疑惑可以回復我~

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SpringBoot構建電商基礎秒殺項目

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應用SpringBoot快速搭建擁有用戶、商品、交易及秒殺活動的電商秒殺應用。

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Access to XMLHttpRequest at 'http://localhost:8080/user/getotp' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

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Access to XMLHttpRequest at 'http://localhost:8080/user/getotp' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

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Access to XMLHttpRequest at 'http://localhost:8080/user/getotp' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.