Java

Spring 获取 bean xml 的 property

例如 获取下面示例的 name: maker，查到两种方法，虽然最终没有使用（发现是伪需求，其它地方有，不用从xml中获取），记录于此，或许有用到的时候。

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<bean id="hi" class="spring.HelloWorld">
       <property name="name"  value="maker"/>
</bean>

方案一：

来源 https://blog.csdn.net/linkingfei/article/details/78677004

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public class Test {
       public static void main(String[] args) {            
           Resource r=new ClassPathResource("beans.xml");
           BeanFactory factory=new XmlBeanFactory(r);      
           HelloWorld hi=(HelloWorld)factory.getBean("hi");
           hi.show()
        }
    }
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public class Test {
       public static void main(String[] args) {            
           HelloWorld hi=new HelloWorld();
           String name="";
           Properties pt=new Properties();   
           try {    
              //注：有/为src目录下，无则为包目录下
              pt.load(Test.class.getResourceAsStream("/Name.properties"));
               name=pt.getProperty("name");
            } catch (IOException e) {
                e.printStackTrace();
            }
            hi.setName(name);
            hi.show();         
       }
    }

###方案二：
来源 https://stackoverflow.com/questions/19970605/how-to-get-the-property-value-inside-a-spring-bean-class-in-my-class

示例源码：

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<bean id="dataSource" class="org.tempuri.DataBeanClass">
    <property name="url" value="${url}"></property>
</bean>

You can annotate your bean property like this, then spring will auto inject the property from your property file.

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@Value("${url}")  // @Value("#{dataSource.url}")
private String url;