spring remark

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工厂类都是简单的，仅提供静态方法和变量的单实例，它们将创建对象，并将这些对象绑定在一起。

package com.openv.spring;

/**
* 注入HelloWorld和HelloStr依赖性
*
* @author luoshifei
*/
public class HelloWorldFactory {
    public static HelloWorld getFileHelloWorld() {
        HelloStr hStr = new FileHelloStr("helloworld.properties");
        HelloWorld hw = new HelloWorld(hStr);

return hw;
}
}

package com.openv.spring;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
* HelloWorld客户应用
*
* @author luoshifei
*/
public class HelloWorldClient {
protected static final Log log = LogFactory.getLog(HelloWorldClient.class);

    public static void main(String[] args) {
        HelloWorld hw = HelloWorldFactory.getFileHelloWorld();
        log.info(hw.getContent());
    }
}

other：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>

     <bean name="fileHello"
          class="com.openv.spring.FileHelloStr">
          <constructor-arg>
               <value>helloworld.properties</value>
          </constructor-arg>
     </bean>

</beans>

解析配置文件

public class HelloWorldClient {
protected static final Log log = LogFactory.getLog(HelloWorldClient.class);

public HelloWorldClient() {
   Resource resource = new ClassPathResource("appcontext.xml");
   BeanFactory factory = new XmlBeanFactory(resource);
   HelloWorld hw = (HelloWorld) factory.getBean("fileHelloWorld");
   log.info(hw.getContent());
}

public static void main(String[] args) {
new HelloWorldClient();
}
}