Spring进阶一：Spring开发环境搭建

做个小笔记：Spring的下载。从Spring源下载Spring的jar文件和Spring参考文件，下载链接如下：http://repo.spring.io/release/org/springframework/spring/
在上面链接中选择对应的版本即可，如果你想下载可以从Spring官网Projects找到Spring framework进入，网页上面几行找到github的图标即可进入下载页面。下面是Spring的jar文件和Spring参考文件下载示意图

第一步：使用Maven构建Java web项目，参考链接：Maven构建Java Web项目

第二步：修改pom.xml，添加Spring依赖，这些内容可以从Spring4.2.2的docs文档的第二章找到，具体内容为：

<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/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>org.gsfan</groupId>  <artifactId>spring01</artifactId>  <packaging>war</packaging>  <version>0.0.1-SNAPSHOT</version>  <name>spring01 Maven Webapp</name>  <url>http://maven.apache.org</url>   <!-- 属性配置 -->  <properties>      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.10</version>      <scope>test</scope>    </dependency>    <!-- 添加Spring依赖 -->     <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-beans</artifactId>        <version>4.2.2.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-core</artifactId>        <version>4.2.2.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context</artifactId>        <version>4.2.2.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-web</artifactId>        <version>4.2.2.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-jdbc</artifactId>        <version>4.2.2.RELEASE</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-aop</artifactId>        <version>4.2.2.RELEASE</version>    </dependency>    <!-- AOP的依赖，@Aspect注解在里面 -->    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-aspects</artifactId>        <version>4.2.2.RELEASE</version>    </dependency>  </dependencies>  <build>    <finalName>spring01</finalName>  </build></project>

第三步：建立测试代码
先看看项目最终的目录结构，各文件具体内容请往后看，程序目录结构如下图所示：

IPersonDao.java

package dao;public interface IPersonDao {    void save();}

PersonDao.java

package dao;public class PersonDao implements IPersonDao {    public void save() {        System.out.println("======PersonDao save()======");    }}

IPersonService.java

package service;public interface IPersonService {    public void processSave();}

PersonService.java

package service;import dao.IPersonDao;public class PersonService implements IPersonService {    private IPersonDao personDao = null;    public IPersonDao getPersonDao() {        return personDao;    }    public void setPersonDao(IPersonDao personDao) {        this.personDao = personDao;    }    public void processSave() {        System.out.println("======PersonService.processSave()======");        personDao.save();    }}

第四步：编写Spring配置文件context.xml

<?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:aop="http://www.springframework.org/schema/aop"    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"    xsi:schemaLocation="     http://www.springframework.org/schema/beans      http://www.springframework.org/schema/beans/spring-beans-4.0.xsd     http://www.springframework.org/schema/tx      http://www.springframework.org/schema/tx/spring-tx-4.0.xsd     http://www.springframework.org/schema/aop      http://www.springframework.org/schema/aop/spring-aop-4.0.xsd     http://www.springframework.org/schema/context     http://www.springframework.org/schema/context/spring-context-4.0.xsd">    <bean id="personDao" class="dao.PersonDao"></bean>    <bean id="personService" class="service.PersonService">        <property name="personDao" ref="personDao"></property>    </bean></beans>

第五步：测试
测试类PersonServiceTest.java

package service;import org.junit.Before;import org.junit.Test;import org.springframework.beans.factory.BeanFactory;import org.springframework.context.support.ClassPathXmlApplicationContext;public class PersonServiceTest {    private BeanFactory factory = null;    @Before    public void before() {        factory = new ClassPathXmlApplicationContext("context.xml");    }    @Test    public void testSpring() {        IPersonService personService = (IPersonService) factory.getBean("personService");        personService.processSave();//      测试方法二   //      ApplicationContext ctx = new ClassPathXmlApplicationContext("context.xml");//      IPersonService personService2= (IPersonService)ctx.getBean("IPersonService");//      personService2.processSave();    }}

最终测试方法：

如果控制台打印出，一下信息则表示成功了：
======PersonService.processSave()======
======PersonDao save()======