我想使用您的应用程序服务器内置功能管理多个 数据源,并使用 JNDI 访问它。我正在使用带有 Spring JPA 数据的 Spring boot。
我能够为单个数据源配置 application.properties:
spring.datasource.jndi-name=jdbc/customers
我在 context.xml 文件中的配置如下:
<Resource name="jdbc/customer" auth="Container" type="javax.sql.DataSource"
maxTotal="100" maxIdle="30" maxWaitMillis="10000"
username="root" password="root" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/customer"/>
一切正常。
但是当我无法配置两个数据源时。
我确定 context.xml 文件中的配置:
<Resource name="jdbc/customer" auth="Container" type="javax.sql.DataSource"
maxTotal="100" maxIdle="30" maxWaitMillis="10000"
username="root" password="root" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/customer"/>
<Resource name="jdbc/employee" auth="Container" type="javax.sql.DataSource"
maxTotal="100" maxIdle="30" maxWaitMillis="10000"
username="root" password="root" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/employee"/>
我对 application.properties 文件配置有疑问。
我尝试了以下选项但没有成功:
spring.datasource.jndi-name=jdbc/customers,jdbc/employee
请让我知道有关使用 JNDI 为多个数据源进行 Spring 引导的任何详细信息。几天来我一直在寻找这种配置。
二审根据 Spring Boot Documentation
spring.datasource.primary.jndi-name=jdbc/customer
spring.datasource.secondary.jndi-name=jdbc/project
配置类。
@Bean
@Primary
@ConfigurationProperties(prefix="datasource.primary")
public DataSource primaryDataSource() {
return DataSourceBuilder.create().build();
}
@Bean
@ConfigurationProperties(prefix="datasource.secondary")
public DataSource secondaryDataSource() {
return DataSourceBuilder.create().build();
}
应用程序没有启动。虽然 tomcat 服务器正在启动。日志中没有打印错误。
第三次尝试:使用 JndiObjectFactoryBean
我有以下 application.properties
spring.datasource.primary.expected-type=javax.sql.DataSource
spring.datasource.primary.jndi-name=jdbc/customer
spring.datasource.primary.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
spring.datasource.primary.jpa.show-sql=false
spring.datasource.primary.jpa.hibernate.ddl-auto=validate
spring.datasource.secondary.jndi-name=jdbc/employee
spring.datasource.secondary.expected-type=javax.sql.DataSource
spring.datasource.secondary.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
spring.datasource.secondary.jpa.show-sql=false
spring.datasource.secondary.jpa.hibernate.ddl-auto=validate
和下面的java配置:
@Bean(destroyMethod="")
@Primary
@ConfigurationProperties(prefix="spring.datasource.primary")
public FactoryBean primaryDataSource() {
return new JndiObjectFactoryBean();
}
@Bean(destroyMethod="")
@ConfigurationProperties(prefix="spring.datasource.secondary")
public FactoryBean secondaryDataSource() {
return new JndiObjectFactoryBean();
}
但仍然报错:
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'primaryDataSource' defined in class path resource [com/web/initializer/MvcConfig.class]: Invocation of init method failed; nested exception is javax.naming.NameNotFoundException: Name [jdbc/customer] is not bound in this Context. Unable to find [jdbc].
Related cause: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'secondaryDataSource' defined in class path resource [com/web/initializer/MvcConfig.class]: Invocation of init method failed; nested exception is javax.naming.NameNotFoundException: Name [jdbc/employee] is not bound in this Context. Unable to find [jdbc].
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:474)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.context.web.SpringBootServletInitializer.run(SpringBootServletInitializer.java:117)
at org.springframework.boot.context.web.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:108)
at org.springframework.boot.context.web.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:68)
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:175)
更新: 使用以下属性文件进行试用:
spring.datasource.primary.expected-type=javax.sql.DataSource
spring.datasource.primary.jndi-name=java:comp/env/jdbc/customer
spring.datasource.secondary.jndi-name=java:comp/env/jdbc/employee
spring.datasource.secondary.expected-type=javax.sql.DataSource
spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
spring.jpa.show-sql=false
spring.jpa.hibernate.ddl-auto=validate
它在客户模式中创建所有表,但也无法尝试找到其他表。(来自第二个模式)
最佳答案
这是对您的第三次试验稍加修改的解决方案。 考虑这个解决方案(Spring Boot 1.3.2):
application.properties 文件:
spring.datasource.primary.jndi-name=java:/comp/env/jdbc/SecurityDS
spring.datasource.primary.driver-class-name=org.postgresql.Driver
spring.datasource.secondary.jndi-name=java:/comp/env/jdbc/TmsDS
spring.datasource.secondary.driver-class-name=org.postgresql.Driver
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQL9Dialect
spring.jpa.show-sql=false
配置:
@Configuration@ EnableConfigurationProperties
public class AppConfig {
@Bean@ ConfigurationProperties(prefix = "spring.datasource.primary")
public JndiPropertyHolder primary() {
return new JndiPropertyHolder();
}
@Bean@ Primary
public DataSource primaryDataSource() {
JndiDataSourceLookup dataSourceLookup = new JndiDataSourceLookup();
DataSource dataSource = dataSourceLookup.getDataSource(primary().getJndiName());
return dataSource;
}
@Bean@ ConfigurationProperties(prefix = "spring.datasource.secondary")
public JndiPropertyHolder secondary() {
return new JndiPropertyHolder();
}
@Bean
public DataSource secondaryDataSource() {
JndiDataSourceLookup dataSourceLookup = new JndiDataSourceLookup();
DataSource dataSource = dataSourceLookup.getDataSource(secondary().getJndiName());
return dataSource;
}
private static class JndiPropertyHolder {
private String jndiName;
public String getJndiName() {
return jndiName;
}
public void setJndiName(String jndiName) {
this.jndiName = jndiName;
}
}
}
然后您可以按照指南 http://docs.spring.io/spring-data/jpa/docs/1.3.0.RELEASE/reference/html/jpa.repositories.html将您的数据源与 jpa 存储库一起使用。
关于java - 使用 JNDI 在 Spring Boot 中配置多个数据源,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32776410/