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  • spring profile

    第三章:1.bean的高级装配

    profile:  开发环境(dev),QA环境(qa),生产环境(prod)

    1.配置profile bean:

    1.1基于注解的形式:

    @Profile注解可以指定某个bean属于哪个profile,Spring3.1时@Profile注解只能加在类上,Spring3.2开始可以加在方法上
    @Configuration
    public class DataSourceConfig {
      @Bean(destroyMethod = "shutdown")
      @Profile("dev")
      public DataSource embeddedDataSource() {
        return new EmbeddedDatabaseBuilder()
            .setType(EmbeddedDatabaseType.H2)
            .addScript("classpath:schema.sql")
            .addScript("classpath:test-data.sql")
            .build();
      }
      @Bean
      @Profile("prod")
      public DataSource jndiDataSource() {
        JndiObjectFactoryBean jndiObjectFactoryBean = new JndiObjectFactoryBean();
        jndiObjectFactoryBean.setJndiName("jdbc/myDS");
        jndiObjectFactoryBean.setResourceRef(true);
        jndiObjectFactoryBean.setProxyInterface(javax.sql.DataSource.class);
        return (DataSource) jndiObjectFactoryBean.getObject();
      }
    }

    1.2.xml形式:

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
      xmlns:jee="http://www.springframework.org/schema/jee" xmlns:p="http://www.springframework.org/schema/p"
      xsi:schemaLocation="
        http://www.springframework.org/schema/jee
        http://www.springframework.org/schema/jee/spring-jee.xsd
        http://www.springframework.org/schema/jdbc
        http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">
    
      <beans profile="dev">
        <jdbc:embedded-database id="dataSource" type="H2">
          <jdbc:script location="classpath:schema.sql" />
          <jdbc:script location="classpath:test-data.sql" />
        </jdbc:embedded-database>
      </beans>
      
      <beans profile="prod">
        <jee:jndi-lookup id="dataSource"
          lazy-init="true"
          jndi-name="jdbc/myDatabase"
          resource-ref="true"
          proxy-interface="javax.sql.DataSource" />
      </beans>
    
      <beans profile="qa">
        <bean id="dataSource"
              class="org.apache.commons.dbcp.BasicDataSource"
              destroy-method="close"
              p:url=""
              p:driverClassName=""
              p:username=""
        />
      </beans>
    </beans>

    2.如何激活?

    两个属性:spring.profiles.default和spring.profiles.active

    spring首先找active的profile,若没有则找default,若都没有则没有激活的profile。

    有多种方式来设置这两个属性:

    • 作为DispatcherServlet的初始化参数;
    • 作为web应用的上下文参数;
    • 作为JNDI条目;
    • 作为环境变量;
    • 作为JVM的系统属性;
    • 在集成测试类上,使用@ActiveProfiles注解配置。
    1.作为DispatcherServlet的初始化参数init-param
    <!-- 在上下文中设置profile的默认值 -->
    16   <context-param>
    17       <param-name>spring.profiles.default</param-name>
    18       <param-value>dev</param-value>
    19   </context-param>
    

    21 <listener> 22 <listener-class> 23 org.springframework.web.context.ContextLoaderListener 24 </listener-class> 25 </listener> 26 27 <servlet> 28 <servlet-name>appServlet</servlet-name> 29 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 30 <!-- 在servlet中设置profile的默认值 --> 31 <init-param> 32     <param-name>spring.profiles.default</param-name> 33     <param-value>dev</param-value> 34 </init-param> 35 <load-on-startup>1</load-on-startup> 36 </servlet>

    37 <servlet-mapping> 38 <servlet-name>appServlet</servlet-name> 39 <url-pattern>/</url-pattern> 40 </servlet-mapping>

    使用profile进行测试:

    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(classes=TestConfig.class)
    @ActiveProfiles("dev")
    public class MagicExistsTest {
    ........
    }
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  • 原文地址:https://www.cnblogs.com/crazy-lc/p/12134073.html
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