簡單的說，程式設計師可以使用同一個JNDI介面來查詢以下內容
簡單介紹就到這裡
應用程式伺服器的資源放置在「java:comp/env」前綴下。假設資料來源已開啟
java:/comp/env/jdbc/db1
取得此資料來源
javax.naming.Context initialContext = new javax.naming.InitialContext();
javax.naming.Context subContext = (javax.naming.Context) initialContext.lookup("java:comp/env");
DataSource dataSource = (DataSource) subContext.lookup("jdbc/db1");
或您可以透過提供完整路徑直接取得實例
javax.naming.Context initialContext = new javax.naming.InitialContext();
DataSource dataSource = (DataSource) initialContext.lookup("java:comp/env/jdbc/db1");
只要在application.properties
中新增一行
spring.datasource.jndi-name=java:/comp/env/jdbc/db1
相關bean由org.springframework.boot.autoconfigure.jdbc.JndiDataSourceAutoConfiguration
創建
@Configuration(proxyBeanMethods = false)
@AutoConfigureBefore({ XADataSourceAutoConfiguration.class, DataSourceAutoConfiguration.class })
@ConditionalOnClass({ DataSource.class, EmbeddedDatabaseType.class })
@ConditionalOnProperty(prefix = "spring.datasource", name = "jndi-name")
@EnableConfigurationProperties(DataSourceProperties.class)
public class JndiDataSourceAutoConfiguration {
@Bean(destroyMethod = "")
@ConditionalOnMissingBean
public DataSource dataSource(DataSourceProperties properties, ApplicationContext context) {
JndiDataSourceLookup dataSourceLookup = new JndiDataSourceLookup();
DataSource dataSource = dataSourceLookup.getDataSource(properties.getJndiName());
excludeMBeanIfNecessary(dataSource, "dataSource", context);
return dataSource;
}
private void excludeMBeanIfNecessary(Object candidate, String beanName, ApplicationContext context) {
for (MBeanExporter mbeanExporter : context.getBeansOfType(MBeanExporter.class).values()) {
if (JmxUtils.isMBean(candidate.getClass())) {
mbeanExporter.addExcludedBean(beanName);
}
}
}
}
以上是快速瀏覽JNDI（Java命名和目錄介面）的詳細內容。更多資訊請關注PHP中文網其他相關文章！
