spring结合velocity的应用实例

import java.util.Map;

import org.apache.velocity.app.VelocityEngine;
import org.springframework.ui.velocity.VelocityEngineUtils;

public class MsgBean ...{
    private VelocityEngine velocityEngine;

    private String msg;

    private Map model; // 用来保存velocity中的参数值

    private String encoding; // 编码

    private String templateLocation; // 注入的velocity模块

    public String getEncoding() ...{
        return encoding;
    }

    public void setEncoding(String encoding) ...{
        this.encoding = encoding;
    }

    public String getTemplateLocation() ...{
        return templateLocation;
    }

    public void setTemplateLocation(String templateLocation) ...{
        this.templateLocation = templateLocation;
    }

    public Map getModel() ...{
        return model;
    }

    public void setModel(Map model) ...{
        this.model = model;
    }

    public String getMsg() ...{
        // return title;
        // 将参数值注入到模块后的返回值
        return VelocityEngineUtils.mergeTemplateIntoString(velocityEngine,
                templateLocation, encoding, model);

    }

    public void setMsg(String msg) ...{
        this.msg = msg;
    }

    public VelocityEngine getVelocityEngine() ...{
        return velocityEngine;
    }

    public void setVelocityEngine(VelocityEngine velocityEngine) ...{
        this.velocityEngine = velocityEngine;
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

 

   
 <bean id="velocityEngine" class="org.springframework.ui.velocity.VelocityEngineFactoryBean"> 
   <property name="resourceLoaderPath">
            <value>classpath:velocity</value>
     </property>
    <property name="velocityProperties">
                 <props>
                       <prop key="resource.loader">class</prop>
                       <prop key="class.resource.loader.class">
                             org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
                       </prop>
                       <prop key="velocimacro.library"></prop>
                       <prop key="input.encoding">GBK</prop>
                       <prop key="output.encoding">GBK</prop>
                       <prop key="default.contentType">text/html; charset=GBK</prop>
                 </props>
           </property>
</bean>

<bean id="msgBean" class="MsgBean">
        <property name="templateLocation" value="test.vm"></property>
        <property name="encoding" value="GBK"></property>
        <property name="velocityEngine" ref="velocityEngine"></property>
</bean>

</beans>

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.io.FileUtils;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestVeloctiy ...{
    public static void main(String[] args) ...{
        // TODO Auto-generated method stub
        ApplicationContext ctx=new ClassPathXmlApplicationContext("test3.xml");
        MsgBean    msgBean=((MsgBean)ctx.getBean("msgBean"));
        Map<String, String> data = new HashMap<String, String>();
        data.put("me","yourname");
        msgBean.setModel(data);
        System.out.println(msgBean.getMsg());
       
        
        //根据apache common IO 组件直接将内容写到一个文件中去.
         File dest = new File( "test.html" );         
          try ...{
            FileUtils.writeStringToFile( dest, msgBean.getMsg(), "GBK" );
        } catch (IOException e) ...{
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
}

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