spring读取properties配置文件

可以通过以下方式读取配置文件，使用BeanDefinitionRegisttry，PropertiesBeanDefinitionReader类读取配置文件

BeanDefinitionRegistry reg=new DefaultListableBeanFactory();

PropertiesBeanDefinitionReader reader=new PropertiesBeanDefinitionReader(reg);

reader.loadBeanDefinitions(new ClassPathResource("beans-config.properties"));

//读取properties的值

BeanFactory factory=(BeanFactory)reg;

//beanFactory工厂

HelloBean hello=(HelloBean)factory.getBean("helloBean"); //获取bean

System.out.println(hello.getHelloWord());

文件的位置如下所示：

   

在程序中编写，定义程序与程序之间的依赖关系

MutablePropertyValues properties=new MutablePropertyValues();
properties.addPropertyValue("helloWord","hello!Justry!!!!!");
RootBeanDefinition definition=new RootBeanDefinition(HelloBean.class,null,properties);
BeanDefinitionRegistry reg1=new DefaultListableBeanFactory();
reg1.registerBeanDefinition("helloBean",definition);
BeanFactory factory1=(BeanFactory)reg1;
HelloBean hello1=(HelloBean)factory1.getBean("helloBean");
System.out.println(hello1.getHelloWord());