Java测试类获取spring bean方法

Java测试类获取spring bean方法  

http://blog.163.com/lizhenming_2008/blog/static/76558333201362094243911/

 

 

1、通过spring上下文

ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationcontext.xml");

DataSource ds = (DataSource) ctx.getBean("dataSource");

2、Resource类

Resource rs = new FileSystemResource("**/**/appliactioncontext.xml");

BeanFactory factory = new XmlBeanFactory(rs);

DataSource ds = (DataSource) factory.getBean("dataSource");

3、用接口类WebApplicationContext来取

private WebApplicationContext wac;

        wac = WebApplicationContextUtils.getRequiredWebApplicationContext(his.getServletContext());

        wac = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext());

      JdbcTemplate jdbcTemplate = (JdbcTemplate) ctx.getBean("jdbcTemplate");

其中，jdbcTemplate为spring配置文件中的一个bean的id值。

 

读取属性（properties）文件

1、利用spring读取properties 文件

BeanDefinitionRegistry reg = new DefaultListableBeanFactory();

   PropertiesBeanDefinitionReader reader = new PropertiesBeanDefinitionReader(reg);

   reader.loadBeanDefinitions(new ClassPathResource("beanConfig.properties"));

   BeanFactory factory = (BeanFactory) reg;

   HelloBean helloBean = (HelloBean)factory.getBean("helloBean");

2、利用java.util.Properties读取属性文件

InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("ipConfig.properties");

   Properties p = new Properties();

   try {

   p.load(inputStream);

   } catch (IOException e1)  {

   e1.printStackTrace();

   }