在 Spring Boot 中使用 JNDI 配置多个数据源

2022-01-18 00:00:00 spring java spring-boot spring-data jndi

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.

I want to manage multiple DataSource using your Application Servers built-in features and access it using JNDI. I am using Spring boot with Spring JPA data.

我能够为单个数据源配置 application.properties:

I am able to configure the application.properties for single datasource:

spring.datasource.jndi-name=jdbc/customers

我在 context.xml 文件中的配置如下:

And my configuration in context.xml file as below:

<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.

But when I am unable to configure for two datasource.

我确定 context.xml 文件中的配置:

I am sure on the configuration in context.xml file:

 <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 文件的配置有疑问.

我尝试了以下选项但没有成功:

I tried the below options with no success:

spring.datasource.jndi-name=jdbc/customers,jdbc/employee

请让我知道有关使用 JNDI 进行多数据源的 Spring boot 的任何详细信息.这几天我一直在寻找这个配置.

Please let me know any details on Spring boot with JNDI for multiple data source. I was looking for this configuration for days now.

第二次试用根据 Spring Boot 文档

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();
}

应用程序未启动.虽然tomcat服务器正在启动.日志中不会打印任何错误.

The application does not get started. Though the tomcat server is getting started. No errors are printed in the log.

第三次试用:使用 JndiObjectFactoryBean

我有以下 application.properties

I have the below 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

以及下面的java配置:

And the below java configuration:

@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();
}

但还是报错:

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:使用以下属性文件试用:

Update: Trial using the below properties file:

  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，但尝试查找其他表也失败.(来自第二个模式)

It creates all the tables in customer schema, but fails trying to find the other tables also.(from the second schema)

推荐答案

这是您第三次试用的解决方案，稍作修改.考虑这个解决方案(Spring Boot 1.3.2):

This is the solution for your third trial a little bit modified. Consider this solution (Spring Boot 1.3.2):

application.properties 文件:

application.properties file:

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.

And then you can follow guide http://docs.spring.io/spring-data/jpa/docs/1.3.0.RELEASE/reference/html/jpa.repositories.html to use your datasources with jpa repositories.

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