Question

我刚刚将我的应用升级到Angular 4.0.0 final。

升级后（并没有改变任何其他内容），我收到一堆错误告诉我Supplied parameters do not match any signature of call target.

错误消息指向我的模板中的纯HTML标记，而不是任何“调用目标”＃9;我能辨认出来。

问题出在此文件中：https://github.com/canonn-science/CanonnApi/blob/feature/site-editor/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html

以下是错误消息： ERROR in ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (15,9): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (15,5): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (25,7): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (30,84): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (31,83): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (35,7): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (40,84): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (41,90): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (42,84): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (46,7): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (51,84): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (52,88): Supplied parameters do not match any signature of call target. ng:///D:/Dev/CanonnApi/CanonnApi.Frontend/src/app/components/main-sidebar/main-sidebar.component.html (53,83): Supplied parameters do not match any signature of call target.

我错过了什么？

Answer 1

您收到此消息是因为router.isActive类上的Router需要多个参数。

根据docs：

isActive（url：string | UrlTree，exact：boolean）：boolean

isActive获取url字符串AND是否将其评估为完全匹配。

如果我可以建议另一种方法来完成切换活动＆＃39;不使用ngClass而不是

的类

<li [ngClass]="{ 'active': router.isActive('/basedata/codex') }">

有built in directives来处理这类事情：

<li routerLinkActive="active" [routerLinkActiveOptions]="{exact:true}">

希望这有帮助。

Angular：升级到4.0.0后进行编译时出错

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