dynamicroutingdatasource如何自定义配置
时间: 2024-01-27 19:04:32 浏览: 26
根据提供的引用内容,可以看出dynamicroutingdatasource是一个用于动态切换数据库的数据源。要自定义配置dynamicroutingdatasource,可以按照以下步骤进行操作:
1. 创建自定义注解:
```java
import java.lang.annotation.*;
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface TargetDataSource {
String value();
}
```
2. 创建数据源切换类:
```java
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
public class DynamicRoutingDataSource extends AbstractRoutingDataSource {
@Override
protected Object determineCurrentLookupKey() {
return DataSourceContextHolder.getDataSource();
}
}
```
3. 创建数据源上下文类:
```java
public class DataSourceContextHolder {
private static final ThreadLocal<String> contextHolder = new ThreadLocal<>();
public static void setDataSource(String dataSource) {
contextHolder.set(dataSource);
}
public static String getDataSource() {
return contextHolder.get();
}
public static void clearDataSource() {
contextHolder.remove();
}
}
```
4. 创建数据源配置类:
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;
@Configuration
public class DataSourceConfig {
@Autowired
private DataSourceProperties dataSourceProperties;
@Bean
public DataSource dataSource() {
DynamicRoutingDataSource dataSource = new DynamicRoutingDataSource(); Map<Object, Object> targetDataSources = new HashMap<>();
// 配置多个数据源
targetDataSources.put("dataSource1", createDataSource(dataSourceProperties.getDataSource1()));
targetDataSources.put("dataSource2", createDataSource(dataSourceProperties.getDataSource2()));
dataSource.setTargetDataSources(targetDataSources);
dataSource.setDefaultTargetDataSource(targetDataSources.get("dataSource1"));
return dataSource;
}
private DataSource createDataSource(DataSourceProperties.DataSourceConfig config) {
// 创建数据源
// 根据config配置创建数据源
}
@Bean
public PlatformTransactionManager transactionManager(DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
}
```
5. 在需要切换数据源的地方使用自定义注解:
```java
@TargetDataSource("dataSource2")
public void someMethod() {
// 方法体
}
```
这样就可以根据注解的值动态切换数据源了。