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id: custom-processor
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title: 自定义processor
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sidebar_label: 自定义processor
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---
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processor就是对请求的用户账户信息subject真正的认证鉴权处理器,我们需要实现BaseProcessor接口,来实现我们自定义的认证鉴权方式。
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sureness已经内置基于账户密码认证方式处理PasswordSubject的PasswordProcessor,基于jwt认证方式处理JwtSubject的JwtProcessor等。
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自定义前建议了解`sureness`处理流程和提供的扩展接口,详见 [进阶扩展](/docs/advanced/extend-point)
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- `Processor`: `Subject`处理接口,根据Subject信息,进行认证鉴权
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```
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public abstract class BaseProcessor implements Processor{
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public abstract boolean canSupportSubjectClass(Class<?> var);
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public abstract Subject authenticated (Subject var) throws SurenessAuthenticationException;
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public abstract void authorized(Subject var) throws SurenessAuthorizationException;
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}
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```
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上面就是BaseProcessor的一些重要接口方法,自定义processor需要我们去实现这些方法。
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- `canSupportSubjectClass` 判断是否支持入参的此Subject类类型,比如 JwtProcessor只支持JwtSubject, PasswordProcessor只支持PasswordSubject
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- `authenticated` 对subject进行认证,根据传入的subject信息和系统内信息,进行请求用户的账户认证
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- `authorized` 对subject进行鉴权,鉴权判断此用户是否拥有其访问api的访问权限
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sureness使用异常流程模型,以上的认证失败或鉴权失败都会抛出不同类型的异常,用户在最外部捕获判断实现接下来的流程。
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sureness默认异常类型参考 [默认异常类型](/docs/start/default-exception)
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具体扩展实践请参考 [Springboot项目集成-数据库方案](/docs/integrate/sample-tom)
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