java组件中的Mule属性

在我的Mule项目中，我有一个属性文件，其中包含我的http地址 服务器地址=http://localhost:8080/test/ 然后在我的流中，我将引用它为${server.address}，但是如何在java组件类中引用该属性呢

例如：

  public String address = ${server.address}

---

您可以将java类中的属性设置为Spring属性。对于单例对象，属性将在流启动时设置

<flow name="propertyprojectFlow1" doc:name="propertyprojectFlow1">
    <http:inbound-endpoint exchange-pattern="request-response" host="localhost" port="8581" path="echoServer" doc:name="HTTP"/>
    <component  doc:name="Java">
        <singleton-object class="MyClass">
            <property key="server" value="${server.address}"/>
        </singleton-object>
    </component>
</flow>

---

您可以将java类中的属性设置为Spring属性。对于单例对象，属性将在流启动时设置

<flow name="propertyprojectFlow1" doc:name="propertyprojectFlow1">
    <http:inbound-endpoint exchange-pattern="request-response" host="localhost" port="8581" path="echoServer" doc:name="HTTP"/>
    <component  doc:name="Java">
        <singleton-object class="MyClass">
            <property key="server" value="${server.address}"/>
        </singleton-object>
    </component>
</flow>

---

可以加载该属性或任何其他属性，也可以加载属性文件。尽管它可能会产生一些性能问题，但每次执行流时都会加载属性文件

public Properties loadProperties(String name) {
    if(properties == null){
        return loadProperties(name, Thread.currentThread().getContextClassLoader());
    } else {
        return properties;
    }
}

然后：

Properties props = loadProperties("application.properties");
String url = props.getProperty("server.address");

对@Matt answer进行一些更改

    import org.apache.log4j.Logger;
    import org.mule.api.MuleEventContext;
    import org.mule.api.lifecycle.Callable;   

    public class MyClass implements Callable {
       private static Logger logger = Logger.getLogger(MyClass.class);
       private String server;
       private Properties properties;

       public MyClass() {  }

       @Override
       public Object onCall(MuleEventContext eventContext) throws Exception {
           properties = loadProperties("application.properties");
           server = properties.getProperty("server.address");
           logger.info("Server is " + server);
           return null;
       }

       public Properties loadProperties(String name) {
            if(properties == null){
                return loadProperties(name, Thread.currentThread().getContextClassLoader());
            } else {
               return properties;
            }
        }
   }

---

可以加载该属性或任何其他属性，也可以加载属性文件。尽管它可能会产生一些性能问题，但每次执行流时都会加载属性文件

public Properties loadProperties(String name) {
    if(properties == null){
        return loadProperties(name, Thread.currentThread().getContextClassLoader());
    } else {
        return properties;
    }
}

然后：

Properties props = loadProperties("application.properties");
String url = props.getProperty("server.address");

对@Matt answer进行一些更改

    import org.apache.log4j.Logger;
    import org.mule.api.MuleEventContext;
    import org.mule.api.lifecycle.Callable;   

    public class MyClass implements Callable {
       private static Logger logger = Logger.getLogger(MyClass.class);
       private String server;
       private Properties properties;

       public MyClass() {  }

       @Override
       public Object onCall(MuleEventContext eventContext) throws Exception {
           properties = loadProperties("application.properties");
           server = properties.getProperty("server.address");
           logger.info("Server is " + server);
           return null;
       }

       public Properties loadProperties(String name) {
            if(properties == null){
                return loadProperties(name, Thread.currentThread().getContextClassLoader());
            } else {
               return properties;
            }
        }
   }

---

属性文件中的属性名称：

your.property.name.in.properties.file=testing

Java组件：

import org.mule.api.MuleEventContext;
import org.mule.api.lifecycle.Callable;
import org.springframework.beans.factory.annotation.Value;

public class PropertyTest implements Callable {

    @Value("${your.property.name.in.properties.file}")
    private String yourPropertyNameInPropertiesFile;

    @Override
    public Object onCall(MuleEventContext eventContext) throws Exception {

        System.out.println("yourPropertyNameInPropertiesFile"+yourPropertyNameInPropertiesFile);

        // TODO Auto-generated method stub
        return null;
    }
}

---

属性文件中的属性名称：

your.property.name.in.properties.file=testing

Java组件：

import org.mule.api.MuleEventContext;
import org.mule.api.lifecycle.Callable;
import org.springframework.beans.factory.annotation.Value;

public class PropertyTest implements Callable {

    @Value("${your.property.name.in.properties.file}")
    private String yourPropertyNameInPropertiesFile;

    @Override
    public Object onCall(MuleEventContext eventContext) throws Exception {

        System.out.println("yourPropertyNameInPropertiesFile"+yourPropertyNameInPropertiesFile);

        // TODO Auto-generated method stub
        return null;
    }
}

---

如果要为变量设置正确的键值？例如：但是类将其读取为字符串[flowVars['FileName']]，而不是varaible的值如果我想为变量设置正确的键值？例如：但是类将其读取为字符串[flowVars['FileName']]，而不是变量的值