160922、配置：spring通过profile或@profile配置不同的环境（测试、开发、生产）

一、配置环境

applicationContext.xml中添加下边的内容(develop:开发环境，production：生产环境，test：测试环境)

注意：profile的定义一定要在文档的最下边

<beans profile="develop">  

<context:property-placeholder location="classpath*:jdbc-develop.properties"/>  

</beans>  

<beans profile="production">  

<context:property-placeholder location="classpath*:jdbc-production.properties"/>  

</beans>  

<beans profile="test">  

<context:property-placeholder location="classpath*:jdbc-test.properties"/>  

</beans> 

二、切换环境

  在web.xml中添加一个context-param来切换当前环境：

  <context-param>  

    <param-name>spring.profiles.active</param-name>  

    <param-value>develop</param-value>  

  </context-param> 

  java代码可以这样做

  import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import com.hmkcode.vo.Person;

public class App 

{

    public static void main( String[] args )

    {

    AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();

        ctx.getEnvironment().setActiveProfiles("develop"); //or production

        ctx.scan("com.hmkcode.spring"); // register all @Configuration classes

        //ctx.register(SpringConfigDev.class);

        ctx.refresh();

        Person person = (Person)ctx.getBean("person");

        System.out.println("Person: "+person);

    }

}

三、java代码

package com.myapp;

import javax.activation.DataSource;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.Profile;

import

org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;

import

org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;

import org.springframework.jndi.JndiObjectFactoryBean;

@Configuration

public class DataSourceConfig {

@Bean(destroyMethod="shutdown")

@Profile("develop")

public DataSource embeddedDataSource() {

return new EmbeddedDatabaseBuilder()

.setType(EmbeddedDatabaseType.H2)

.addScript("classpath:schema.sql")

.addScript("classpath:test-data.sql")

.build();

}

@Bean

@Profile("production")

public DataSource jndiDataSource() {

JndiObjectFactoryBean jndiObjectFactoryBean =

new JndiObjectFactoryBean();

jndiObjectFactoryBean.setJndiName("jdbc/myDS");

jndiObjectFactoryBean.setResourceRef(true);

jndiObjectFactoryBean.setProxyInterface(javax.sql.DataSource.class);

return (DataSource) jndiObjectFactoryBean.getObject();

}

}