1.通过设定Environment的ActiveProfile来设置当前context所需要的环境配置，在开发中使用@Profile注解类或方法，达到不同情况下选择实例化不同的Bean.
2.使用jvm的spring.profiles.acitve的参数来配置环境
3.web项目设置在Servlet的context pramater
servlet2.5一下的配置
<servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>spring-profiles.active<param-name> <param-value>production</param-value> </init-param> </servlet>
servlet3.0以上的配置
public class WebInit implements WebApplicationInitializer{
@Override
public void onStartup(ServletContext container) throws ServletException{
container.setInitParameter("spring.profiles.default", "dev");
}
}
我没有配置
实例：
DemoBean文件:
package ch2.profile;
public class DemoBean {
private String content;
public DemoBean(String content)
{
this.content = content;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
}
profileConfig文件
package ch2.profile;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Profile;
import org.springframework.context.annotation.Configuration;
//声明本类是一个配置类
@Configuration
public class ProfileConfig {
//这个一个Bean对象
@Bean
//profile为dev时实例化devDemoBean
@Profile("dev")
public DemoBean devDemoBean()
{
return new DemoBean("from development profile ");
}
//这是一个Bean对象
@Bean
//profile为pro时实例化prDemoBean
@Profile("prod")
public DemoBean proDemoBean()
{
return new DemoBean("from production profile");
}
}
Main文件：
package ch2.profile;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class Main {
public static void main(String args[])
{
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
//先将活动的profile注册为prod
context.getEnvironment().setActiveProfiles("prod");
//后注册Bean配置类,不然会报Bean未定义的错误
context.register(ProfileConfig.class);
//刷新容器
context.refresh();
//注册Bean
DemoBean demoBean = context.getBean(DemoBean.class);
//打印
System.out.println(demoBean.getContent());
context.close();
}
}
运行结果：
from production profile