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Description
版本号：
2.2.1
问题描述：
使用第三方登录时，签名校验失败response.getCode() != 2000，后端 FreeMarker 报错，前端登录窗口也不会正常关闭。
建议：在签名校验失败时返回失败的token标识码，从而避免 FreeMarker 报错，前端根据失败的token标识码判断进行提示。
// 后端
if(response.getCode()==2000) {
// ...
} else {
modelMap.addAttribute("token", "失败的token标识码");
}
// 前端
let receiveMessage = function(event){
let token = event.data
if (token === '失败的token标识码') {
alert('登录失败')
} else {
// 正常处理
}
}截图&代码：
2020-07-12 16:10:34.804 [http-nio-8080-exec-2] ERROR freemarker.runtime:59 - Error executing FreeMarker template
freemarker.core.InvalidReferenceException: The following has evaluated to null or missing:
==> token [in template "thirdLogin.ftl" at line 14, column 37]
----
Tip: If the failing expression is known to legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----
----
FTL stack trace ("~" means nesting-related):
- Failed at: ${token} [in template "thirdLogin.ftl" at line 14, column 35]
----
at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134)
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1298191366 commentedon Jul 30, 2020
已修改，待新版本发布