Spring环境测试--SpringTest

1  配置好Spring环境

2  在applicationContext.xml中添加Bean配置

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"">
<beans>
    <bean id="HelloWorld" class="com.demo.spring.test.HelloWorld">
        <property name="message">
            <value>World</value>
        </property>
    </bean>
</beans>

3  新建Bean类---HelloWorld.java

 

package com.demo.spring.test;

public class HelloWorld {

    protected String message;

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public String execute(String str) {
        return "Hello " + getMessage();
    }
}

3  运行测试类 Test.java

编写测试类Test.java  首先使用FileSystemXmlApplicationContext来读取XML配置文件applicationContext  返回ApplicationContext类型的变量ctx  使用ctx的getBean()函数取得配置的Bean对象  HelloWorld  该名称是XML文件中的配置Bean名称  取得的对象经过强制类型转换为HelloWorld类型  命名为hello  调用hello的execute()执行输出

 

package com.demo.spring.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

public class Test {
    public static void main(String[] args) {
        ApplicationContext ctx = new FileSystemXmlApplicationContext(
                "WebRoot/WEB-INF/applicationContext.xml");
        HelloWorld hello = (HelloWorld) ctx.getBean("HelloWorld");
        System.out.println(hello.execute("World"));
    }
}

运行该程序 如果输出 Hello World  则表示环境已经支持Spring了

输出结果

INFO - Refreshing org.springframework.context.support.FileSystemXmlApplicationContext@18fef3d: display name [org.springframework.context.support.FileSystemXmlApplicationContext@18fef3d]; startup date [Thu Dec 29 21:39:14 CST 2011]; root of context hierarchy

INFO - Loading XML bean definitions from file [F:\eeeeeee\SpringTest\WebRoot\WEB-INF\applicationContext.xml]

INFO - Bean factory for application context [org.springframework.context.support.FileSystemXmlApplicationContext@18fef3d]: org.springframework.beans.factory.support.DefaultListableBeanFactory@64dc11

INFO - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@64dc11: defining beans [HelloWorld,viewResolver,testMapping,testAction]; root of factory hierarchy

Hello World