业务逻辑漏洞—验证码绕过

<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
  <groupId>org.apache.commons</groupId>
  <artifactId>commons-lang3</artifactId>
  <version>3.12.0</version>
</dependency>

StringUtils.isAnyBlank(userAccount, userPassword, checkPassword)

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