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优化文档...
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<img alt="logo" src="http://sa-token.dev33.cn/doc/logo.png" width="150" height="150" style="margin-bottom: 10px;">
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</p>
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<h1 align="center" style="margin: 30px 0 30px; font-weight: bold;">sa-token v1.4.0</h1>
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<h4 align="center">一个JavaWeb权限认证框架,强大、简单、好用</h4>
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<h4 align="center">一个JavaWeb轻量级权限认证框架,功能全面,上手简单</h4>
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<h4 align="center">
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<a href="https://gitee.com/sz6/sa-token/stargazers"><img src="https://gitee.com/sz6/sa-token/badge/star.svg"></a>
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<a href="https://github.com/click33/sa-token"><img src="https://img.shields.io/badge/sa--token-v1.4.0-2B9939"></a>
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<a href="https://github.com/click33/sa-token"><img src="https://img.shields.io/badge/language-java-2B9939"></a>
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<a href="https://github.com/click33/sa-token/stargazers"><img src="https://img.shields.io/github/stars/click33/sa-token"></a>
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<a href="https://github.com/click33/sa-token/watchers"><img src="https://img.shields.io/github/watchers/click33/sa-token"></a>
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<a href="https://github.com/click33/sa-token/network/members"><img src="https://img.shields.io/github/forks/click33/sa-token"></a>
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- 你需要做的就是重写`sa-token`的dao层实现方式,参考以下方案:
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## 具体代码
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- 新建文件`SaTokenDaoRedis.java`,实现接口`SaTokenDao`, 并加上注解`@Component`,保证此类被springboot扫描到
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### 1. 首先在pom.xml引入依赖
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``` xml
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<!-- SpringBoot整合redis -->
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-redis</artifactId>
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<version>RELEASE</version>
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</dependency>
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```
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### 2. 实现SaTokenDao接口
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新建文件`SaTokenDaoRedis.java`,实现接口`SaTokenDao`, 并加上注解`@Component`,保证此类被springboot扫描到
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- 代码参考:
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```java
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#### StpUtil.getLoginId(T defaultValue)
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- 获取当前会话登录id, 如果未登录,则返回默认值 (`defaultValue`可以为任意类型)
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- 类似API还有:
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- `StpUtil.getLoginId_defaultNull()` 获取当前会话登录id, 如果未登录,则返回null
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- `StpUtil.getLoginIdDefaultNull()` 获取当前会话登录id, 如果未登录,则返回null
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#### getLoginIdByToken(String tokenValue)
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- 获取指定token对应的登录id,如果未登录,则返回 null
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