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align=\"center\"\u003e\n\u003cimg src=\"https://images.gitee.com/uploads/images/2019/0626/231046_f44892b9_709883.png\" border=\"0\" /\u003e\n\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\n\t\u003cstrong\u003e一个基于springboot的快速集成多数据源的启动器\u003c/strong\u003e\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\n    \u003ca \u003e\n        \u003cimg src=\"https://github.com/baomidou/dynamic-datasource-spring-boot-starter/workflows/CodeQL/badge.svg?branch=master\" \u003e\n    \u003c/a\u003e\n   \u003ca\u003e\n        \u003cimg src=\"https://badgen.net/github/stars/baomidou/dynamic-datasource-spring-boot-starter\" \u003e\n    \u003c/a\u003e\n    \u003ca href=\"https://mvnrepository.com/artifact/com.baomidou/dynamic-datasource-spring-boot-starter\" target=\"_blank\"\u003e\n        \u003cimg src=\"https://img.shields.io/maven-central/v/com.baomidou/dynamic-datasource-spring-boot-starter.svg\" \u003e\n    \u003c/a\u003e\n    \u003ca href=\"https://www.apache.org/licenses/LICENSE-2.0.html\" 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title=\"dynamic-sring-boot-starter\"\u003e\u003c/a\u003e\n\u003c/p\u003e\n\n# 简介\n\ndynamic-datasource-spring-boot-starter 是一个基于springboot的快速集成多数据源的启动器。\n\n其支持 **Jdk 1.7+, SpringBoot 1.5.x 2.x.x 3.x.x**。\n\n## 文档 | Documentation\n\n详细文档 https://www.kancloud.cn/tracy5546/dynamic-datasource/2264611\n\n## 贡献 | Contributing\n\n我们欢迎社区的贡献，请查看 [CONTRIBUTING.md](./CONTRIBUTING.md) 。\n\n# 特性\n\n- 支持 **数据源分组** ，适用于多种场景 纯粹多库 读写分离 一主多从 混合模式。\n- 支持数据库敏感配置信息 **加密(可自定义)**  ENC()。\n- 支持每个数据库独立初始化表结构schema和数据库database。\n- 支持无数据源启动，支持懒加载数据源（需要的时候再创建连接）。\n- 支持 **自定义注解** ，需继承DS(3.2.0+)。\n- 提供并简化对Druid，HikariCp，BeeCp,Dbcp2的快速集成。\n- 提供对Mybatis-Plus，Quartz，ShardingJdbc，P6sy，Jndi等组件的集成方案。\n- 提供 **自定义数据源来源** 方案（如全从数据库加载）。\n- 提供项目启动后 **动态增加移除数据源** 方案。\n- 提供Mybatis环境下的  **纯读写分离** 方案。\n- 提供使用 **spel动态参数** 解析数据源方案。内置spel，session，header，支持自定义。\n- 支持  **多层数据源嵌套切换** 。（ServiceA \u003e\u003e\u003e  ServiceB \u003e\u003e\u003e ServiceC）。\n- 提供  **基于seata的分布式事务方案** 。\n- 提供  **本地多数据源事务方案。**\n\n# 约定\n\n1. 本框架只做 **切换数据源** 这件核心的事情，并**不限制你的具体操作**，切换了数据源可以做任何CRUD。\n2. 配置文件所有以下划线 `_` 分割的数据源 **首部** 即为组的名称，相同组名称的数据源会放在一个组下。\n3. 切换数据源可以是组名，也可以是具体数据源名称。组名则切换时采用负载均衡算法切换。\n4. 默认的数据源名称为  **master** ，你可以通过 `spring.datasource.dynamic.primary` 修改。\n5. 代码块里主动切换\u003e方法上的注解优\u003e类上注解（就近原则）。\n6. DS支持继承抽象类上的DS，支持继承接口上的DS。\n\n# 使用方法\n\n1. 引入`dynamic-datasource-spring-boot-starter`或者`dynamic-datasource-spring-boot3-starter`。\n\n- spring-boot 1.5.x 2.x.x\n\n```xml\n\n\u003cdependency\u003e\n    \u003cgroupId\u003ecom.baomidou\u003c/groupId\u003e\n    \u003cartifactId\u003edynamic-datasource-spring-boot-starter\u003c/artifactId\u003e\n    \u003cversion\u003e${version}\u003c/version\u003e\n\u003c/dependency\u003e\n```\n\n- spring-boot3及以上\n\n```xml\n\n\u003cdependency\u003e\n    \u003cgroupId\u003ecom.baomidou\u003c/groupId\u003e\n    \u003cartifactId\u003edynamic-datasource-spring-boot3-starter\u003c/artifactId\u003e\n    \u003cversion\u003e${version}\u003c/version\u003e\n\u003c/dependency\u003e\n```\n\n2. 配置数据源。\n\n```yaml\nspring:\n  datasource:\n    dynamic:\n      enabled: true #启用动态数据源，默认true\n      primary: master #设置默认的数据源或者数据源组,默认值即为master\n      strict: false #严格匹配数据源,默认false. true未匹配到指定数据源时抛异常,false使用默认数据源\n      grace-destroy: false #是否优雅关闭数据源，默认为false，设置为true时，关闭数据源时如果数据源中还存在活跃连接，至多等待10s后强制关闭\n      datasource:\n        master:\n          url: jdbc:mysql://xx.xx.xx.xx:3306/dynamic\n          username: root\n          password: 123456\n          driver-class-name: com.mysql.jdbc.Driver # 3.2.0开始支持SPI可省略此配置\n        slave_1:\n          url: jdbc:mysql://xx.xx.xx.xx:3307/dynamic\n          username: root\n          password: 123456\n          driver-class-name: com.mysql.jdbc.Driver\n        slave_2:\n          url: ENC(xxxxx) # 内置加密,使用请查看详细文档\n          username: ENC(xxxxx)\n          password: ENC(xxxxx)\n          driver-class-name: com.mysql.jdbc.Driver\n        #......省略\n        #以上会配置一个默认库master，一个组slave下有两个子库slave_1,slave_2\n```\n\n**多主多从：**\n```yaml\nspring:\n  datasource:\n    dynamic:\n      datasource:\n        master_1:\n        master_2:\n        slave_1:\n        slave_2:\n        slave_3:\n```\n\n**纯粹多库：**\n```yaml\nspring:\n  datasource:\n    dynamic:\n      datasource:\n        mysql:\n        oracle:\n        sqlserver:\n        postgresql:\n        h2:\n```\n\n**混合配置：**\n```yaml\nspring:\n  datasource:\n    dynamic:\n      datasource:\n        master:\n        slave_1:\n        slave_2:\n        oracle_1:\n        oracle_2:\n```\n\n3. 使用  **@DS**  切换数据源。\n\n**@DS** 可以注解在方法上或类上，**同时存在就近原则 方法上注解 优先于 类上注解**。\n\n|      注解       |           结果            |\n|:-------------:|:-----------------------:|\n|     没有@DS     |          默认数据源          |\n| @DS(\"dsName\") | dsName可以为组名也可以为具体某个库的名称 |\n\n```java\n\n@Service\n@DS(\"slave\")\npublic class UserServiceImpl implements UserService {\n\n    @Autowired\n    private JdbcTemplate jdbcTemplate;\n\n    public List selectAll() {\n        return jdbcTemplate.queryForList(\"select * from user\");\n    }\n\n    @Override\n    @DS(\"slave_1\")\n    public List selectByCondition() {\n        return jdbcTemplate.queryForList(\"select * from user where age \u003e10\");\n    }\n}\n```","funding_links":["https://dynamic-datasource.com/guide/donate/"],"categories":["Java"],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbaomidou%2Fdynamic-datasource","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fbaomidou%2Fdynamic-datasource","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbaomidou%2Fdynamic-datasource/lists"}