将多数据源配置@ConfigurationProperties(prefix = "spring.datasource")改为从nacos获取数据源
时间: 2024-03-23 22:40:11 浏览: 128
好的,你可以通过以下步骤将多数据源配置从@ConfigurationProperties(prefix = "spring.datasource")改为从Nacos获取数据源:
1. 首先,你需要在pom.xml文件中添加Nacos的依赖:
```xml
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
<version>2.2.1.RELEASE</version>
</dependency>
```
2. 在application.yml文件中添加Nacos的配置信息,包括Nacos Server的地址、命名空间、数据ID和分组等信息:
```yaml
spring:
cloud:
nacos:
config:
server-addr: localhost:8848
namespace: YOUR_NAMESPACE
group: YOUR_GROUP
data-id: YOUR_DATA_ID
```
3. 在你的应用程序中创建一个NacosConfigProperties类,该类通过@ConfigurationProperties注解将Nacos的配置信息注入到类中:
```java
@ConfigurationProperties(prefix = "spring.cloud.nacos.config")
public class NacosConfigProperties {
private String serverAddr;
private String namespace;
private String group;
private String dataId;
// getter and setter methods
}
```
4. 创建一个NacosDataSourceProperties类,该类通过@ConfigurationProperties注解将数据源的配置信息注入到类中:
```java
@ConfigurationProperties(prefix = "spring.datasource")
public class NacosDataSourceProperties {
private String url;
private String username;
private String password;
// getter and setter methods
}
```
5. 创建一个NacosDataSourceFactory类,该类是一个工厂类,用于创建数据源对象:
```java
public class NacosDataSourceFactory {
private NacosDataSourceProperties properties;
public NacosDataSourceFactory(NacosDataSourceProperties properties) {
this.properties = properties;
}
public DataSource createDataSource() {
HikariDataSource dataSource = new HikariDataSource();
dataSource.setJdbcUrl(properties.getUrl());
dataSource.setUsername(properties.getUsername());
dataSource.setPassword(properties.getPassword());
return dataSource;
}
}
```
6. 创建一个NacosDataSourceConfiguration类,该类通过@Configuration注解将数据源的配置信息注入到Spring容器中:
```java
@Configuration
public class NacosDataSourceConfiguration {
private final NacosConfigProperties nacosConfigProperties;
public NacosDataSourceConfiguration(NacosConfigProperties nacosConfigProperties) {
this.nacosConfigProperties = nacosConfigProperties;
}
@Bean
public NacosDataSourceProperties nacosDataSourceProperties() {
ConfigService configService = NacosFactory.createConfigService(nacosConfigProperties.getServerAddr());
String content = configService.getConfig(nacosConfigProperties.getDataId(), nacosConfigProperties.getGroup(), 5000);
return JSON.parseObject(content, NacosDataSourceProperties.class);
}
@Bean
public DataSource dataSource(NacosDataSourceProperties properties) {
return new NacosDataSourceFactory(properties).createDataSource();
}
}
```
7. 最后,在你的应用程序中引入数据源,并将其注入到需要使用的地方:
```java
@Autowired
private DataSource dataSource;
```
这样,你就可以从Nacos获取数据源了。
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