Spring XML配置示例
时间:2020-02-23 14:36:02 来源:igfitidea点击:
在本教程中,我们将看到如何创建Spring Hello World XML基于XML的配置示例。
以下是创建Spring XML配置示例的简单步骤。
1.创建一个简单的Java Maven项目。
2. Maven依赖
将Spring和Cglib Maven依赖于Pom.xml。
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- cglib required for @configuration annotation -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.0</version>
</dependency>
</dependencies>
<properties>
<spring.version>4.2.1.RELEASE</spring.version>
</properties>
所以你的pom.xml看起来像:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"<
<modelVersion<4.0.0</modelVersion>
<groupId>org.igi.theitroad</groupId>
<artifactId>SpringHelloWorldJavaBasedConfiguration</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>SpringHelloWorldJavaBasedConfiguration</name>
<description>It provides hello world program for java based config
</description>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- cglib required for @configuration annotation -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.0</version>
</dependency>
</dependencies>
<properties>
<spring.version>4.2.1.RELEASE</spring.version>
</properties>
</project>
3.创建bean类
在package org.igi.theitroad.model中创建名为country.java的bean类.model。
package org.igi.theitroad.model;
public class Country {
private String name;
private long population;
public Country(String name, long population) {
super();
this.name = name;
this.population = population;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public long getPopulation() {
return population;
}
public void setPopulation(long population) {
this.population = population;
}
}
4. applicationscontext.xml.
在SRC/Main/Resources中创建ApplicationContext.xml,如下所示。
<?xml version="1.0" encoding="UTF-8"?>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">
<bean id="country" class="org.igi.theitroad.model.Country">
<constructor-arg index="0" value="Netherlands"></constructor-arg>
<constructor-arg index="1" value="20000"></constructor-arg>
</bean>
<context:annotation-config
</beans>
请注意,我们正在使用构造函数注入来在此注入依赖项。
5.创建SpringXmlConfigurationMain.java.
在org.igi.theitroad包中创建名为"springxmlconfigurationmain.java"的类。
package org.igi.theitroad;
import org.igi.theitroad.model.Country;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Spring XML based configuration example
*
*/
public class SpringXMLConfigurationMain
{
public static void main( String[] args )
{
ClassPathXmlApplicationContext ac = new ClassPathXmlApplicationContext("ApplicationContext.xml");
Country countryBean = (Country) ac.getBean("country");
String name = countryBean.getName();
System.out.println("Country name: "+name);
long population = countryBean.getPopulation();
System.out.println("Country population: "+population);
ac.close();
}
}
6.运行
运行上面的程序时,我们将得到以下输出。
Jun 15, 2016 11:21:58 AM Jun 15, 2016 9:04:19 PM org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@210366b4: startup date [Fri Jun 15 21:04:19 IST 2016]; root of context hierarchy Jun 15, 2016 9:04:20 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions INFO: Loading XML bean definitions from class path resource [ApplicationContext.xml] Country name: Netherlands Country population: 20000 Jun 15, 2016 9:04:20 PM org.springframework.context.support.ClassPathXmlApplicationContext doClose INFO: Closing org.springframework.context.support.ClassPathXmlApplicationContext@210366b4: startup date [Fri Jun 15 21:04:19 IST 2016]; root of context hierarchy

