Request method 'POST' not supported]

问题出现的原因是在登录Controller层中，当用户名或密码错误时再次跳转到login.html页面时，使用的是POST请求，而login.html页面不支持POST请求，所以报错"Request method 'POST' not supported"。因此，当再次跳转到login.html页面时，如果使用POST请求，login.html页面无法处理POST请求，导致报错。

解决这个问题的方法是，在再次跳转到login.html页面时，使用GET请求而不是POST请求。这样login.html页面就能正常处理请求，不会报错"Request method 'POST' not supported"。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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