使用外部 Tomcat9 服务器使用 JNDI 配置数据源:Spring 引导
Configure DataSource Using JNDI Using external Tomcat 9 Server: Spring Boot
我有一个SpringBootApplication,打包为war文件:
@SpringBootApplication(exclude = {SecurityAutoConfiguration.class})
public class Application extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Application.class);
}
}
在 application.properties 上:
spring.datasource.jndi-name=java:comp/env/jdbc/bonanza
但是当我在 Tomcat 9:
中部署 war 时,我在日志中看到了这些消息
Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].. Returning null.
日志:
12:37:53.989 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [java:comp/env/spring.datasource.jndi-name]
12:37:53.989 [main] DEBUG o.s.jndi.JndiLocatorDelegate - Converted JNDI name [java:comp/env/spring.datasource.jndi-name] not found - trying original name [spring.datasource.jndi-name]. javax.naming.NameNotFoundException: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].
12:37:53.990 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [spring.datasource.jndi-name]
12:37:53.991 [main] DEBUG o.s.jndi.JndiPropertySource - JNDI lookup for name [spring.datasource.jndi-name] threw NamingException with message: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].. Returning null.
12:37:53.995 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [java:comp/env/spring.datasource.jndi-name]
12:37:53.996 [main] DEBUG o.s.jndi.JndiLocatorDelegate - Converted JNDI name [java:comp/env/spring.datasource.jndi-name] not found - trying original name [spring.datasource.jndi-name]. javax.naming.NameNotFoundException: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].
12:37:53.996 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [spring.datasource.jndi-name]
12:37:53.997 [main] DEBUG o.s.jndi.JndiPropertySource - JNDI lookup for name [spring.datasource.jndi-name] threw NamingException with message: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].. Returning null.
12:37:53.998 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Found key 'spring.datasource.jndi-name' in PropertySource 'configurationProperties' with value of type String
在我的 tomcat9/conf/context.xml:
<Resource name="jdbc/bonanza"
auth="Container"
type="javax.sql.DataSource"
maxTotal="100"
maxIdle="30"
maxWaitMillis="10000"
username="a_usr"
password="Mu*7gydlcdstg100@"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://172.175.77.55:3306/a_db"
/>
如错误所示,spring 引导无法在 JNDI 查找中找到密钥。 JNDI 在 Spring 引导的嵌入式 Tomcat 中被禁用,因此您需要使用 Tomcat#enableNaming
启用它,一旦完成,您需要在 JNDI 中创建一个查找条目。您可以参考我从 spring 启动项目维护者存储库 GitHub repo JNDI-Tomcat
之一复制的以下代码
@Bean
public TomcatEmbeddedServletContainerFactory tomcatFactory() {
return new TomcatEmbeddedServletContainerFactory() {
@Override
protected TomcatEmbeddedServletContainer getTomcatEmbeddedServletContainer(
Tomcat tomcat) {
tomcat.enableNaming();
return super.getTomcatEmbeddedServletContainer(tomcat);
}
@Override
protected void postProcessContext(Context context) {
ContextResource resource = new ContextResource();
resource.setName("jdbc/bonanza");
resource.setType(DataSource.class.getName());
resource.setProperty("driverClassName", "your.db.Driver");
resource.setProperty("url", "jdbc:yourDb");
context.getNamingResources().addResource(resource);
}
};
}
[编辑]
由于您没有使用嵌入式 tomcat 服务器,您可以使用 tomcat 配置文件配置 JNDI:
在 server.xml 中,在 <GlobalNamingResources>
下创建资源
<Resource auth="Container" driverClassName="..."
maxActive="..."
maxIdle="..."
maxWait="..."
name="jdbc/bonanza"
username="..."
password="..."
type="..."
url="..."/>
在Context.xml中,您可以link资源
<context>
<ResourceLink auth="Container" name="jdbc/bonanza" global="jdbc/bonanza" type="javax.sql.DataSource" />
</context>
此外,请确保您没有使用 spring-boot main
方法启动应用程序。您需要使用 maven/gradle 构建 war 文件,然后将其部署到 tomcat 并进行测试。
我有一个SpringBootApplication,打包为war文件:
@SpringBootApplication(exclude = {SecurityAutoConfiguration.class})
public class Application extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Application.class);
}
}
在 application.properties 上:
spring.datasource.jndi-name=java:comp/env/jdbc/bonanza
但是当我在 Tomcat 9:
中部署 war 时,我在日志中看到了这些消息Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].. Returning null.
日志:
12:37:53.989 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [java:comp/env/spring.datasource.jndi-name]
12:37:53.989 [main] DEBUG o.s.jndi.JndiLocatorDelegate - Converted JNDI name [java:comp/env/spring.datasource.jndi-name] not found - trying original name [spring.datasource.jndi-name]. javax.naming.NameNotFoundException: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].
12:37:53.990 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [spring.datasource.jndi-name]
12:37:53.991 [main] DEBUG o.s.jndi.JndiPropertySource - JNDI lookup for name [spring.datasource.jndi-name] threw NamingException with message: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].. Returning null.
12:37:53.995 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [java:comp/env/spring.datasource.jndi-name]
12:37:53.996 [main] DEBUG o.s.jndi.JndiLocatorDelegate - Converted JNDI name [java:comp/env/spring.datasource.jndi-name] not found - trying original name [spring.datasource.jndi-name]. javax.naming.NameNotFoundException: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].
12:37:53.996 [main] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [spring.datasource.jndi-name]
12:37:53.997 [main] DEBUG o.s.jndi.JndiPropertySource - JNDI lookup for name [spring.datasource.jndi-name] threw NamingException with message: Name [spring.datasource.jndi-name] is not bound in this Context. Unable to find [spring.datasource.jndi-name].. Returning null.
12:37:53.998 [main] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Found key 'spring.datasource.jndi-name' in PropertySource 'configurationProperties' with value of type String
在我的 tomcat9/conf/context.xml:
<Resource name="jdbc/bonanza"
auth="Container"
type="javax.sql.DataSource"
maxTotal="100"
maxIdle="30"
maxWaitMillis="10000"
username="a_usr"
password="Mu*7gydlcdstg100@"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://172.175.77.55:3306/a_db"
/>
如错误所示,spring 引导无法在 JNDI 查找中找到密钥。 JNDI 在 Spring 引导的嵌入式 Tomcat 中被禁用,因此您需要使用 Tomcat#enableNaming
启用它,一旦完成,您需要在 JNDI 中创建一个查找条目。您可以参考我从 spring 启动项目维护者存储库 GitHub repo JNDI-Tomcat
@Bean
public TomcatEmbeddedServletContainerFactory tomcatFactory() {
return new TomcatEmbeddedServletContainerFactory() {
@Override
protected TomcatEmbeddedServletContainer getTomcatEmbeddedServletContainer(
Tomcat tomcat) {
tomcat.enableNaming();
return super.getTomcatEmbeddedServletContainer(tomcat);
}
@Override
protected void postProcessContext(Context context) {
ContextResource resource = new ContextResource();
resource.setName("jdbc/bonanza");
resource.setType(DataSource.class.getName());
resource.setProperty("driverClassName", "your.db.Driver");
resource.setProperty("url", "jdbc:yourDb");
context.getNamingResources().addResource(resource);
}
};
}
[编辑]
由于您没有使用嵌入式 tomcat 服务器,您可以使用 tomcat 配置文件配置 JNDI:
在 server.xml 中,在 <GlobalNamingResources>
<Resource auth="Container" driverClassName="..."
maxActive="..."
maxIdle="..."
maxWait="..."
name="jdbc/bonanza"
username="..."
password="..."
type="..."
url="..."/>
在Context.xml中,您可以link资源
<context>
<ResourceLink auth="Container" name="jdbc/bonanza" global="jdbc/bonanza" type="javax.sql.DataSource" />
</context>
此外,请确保您没有使用 spring-boot main
方法启动应用程序。您需要使用 maven/gradle 构建 war 文件,然后将其部署到 tomcat 并进行测试。