使用Intellij编写Spring Hello World

编写基于Intellij2016.3与Java SDK1.8 

下载Spring最新jar包：

http://repo.spring.io/release/org/springframework/spring

和Spring依赖的日志组件包

http://commons.apache.org/proper/commons-logging/ 

1、新建一个Module

上图如果选择不完整的话，可以如下添加依赖添加确实的jar包。

2、添加依赖

经测试，一个简单的HelloWorld程序也需要依赖如下5个包：

3、编写测试文件

HelloWorld.java

package com.xiya;

/**
 * Created by N3verL4nd on 2017/3/4.
 */
public class HelloWorld {
    private String message;

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

    public String getMessage() {
        return message;
    }
}

MainApp.java

package com.xiya;

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

/**
 * Created by N3verL4nd on 2017/3/4.
 */
public class MainApp {
    public static void main(String[] args) {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");
        HelloWorld test = (HelloWorld) applicationContext.getBean("HelloWorld");
        System.out.println(test.getMessage());
    }
}

4、编写beans配置文件(src目录下)

<?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.xsd">
    <bean id="HelloWorld" class="com.xiya.HelloWorld">
        <property name="message" value="Spring Hello World!" />
    </bean>
</beans>

一下对程序运行并没有影响，它的作用估计是方便查找xml文件之间的关系吧

运行，报错：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
	at org.springframework.context.support.AbstractApplicationContext.<init>(AbstractApplicationContext.java:161)
	at org.springframework.context.support.AbstractApplicationContext.<init>(AbstractApplicationContext.java:225)
	at org.springframework.context.support.AbstractRefreshableApplicationContext.<init>(AbstractRefreshableApplicationContext.java:88)
	at org.springframework.context.support.AbstractRefreshableConfigApplicationContext.<init>(AbstractRefreshableConfigApplicationContext.java:58)
	at org.springframework.context.support.AbstractXmlApplicationContext.<init>(AbstractXmlApplicationContext.java:61)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:136)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
	at com.xiya.MainApp.main(MainApp.java:11)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 13 more

Process finished with exit code 1

原因是少加入commons-logging-1.2包

添加方法同上。

测试：

转载于:https://www.cnblogs.com/lgh1992314/p/6616227.html