Spring环境搭建入门

准备阶段：

到Spring官网下载所需的API包,其中spring-framework-X.X.X.RELEASE-with-docs.zip压缩包需要下载，里面的dist目录下有所需的API,还有一个是com.springsource.org.apache.commons.logging-1.1.1.jar需要下载，下载地址:http://www.springsource.org/download/community?project=Spring%2520Framework

图解:

我已经下载还了所需的API包，版本是3.1.1的，可以直接下载使用：http://pan.baidu.com/share/link?shareid=28989&uk=2198762756

测试阶段：

项目结构:

所需包导入:

其实有些jar包在这个测试中是不需要的，不过为了方便也不想逐一测试了。

com.sunflower.pojo.Student:

 1 package com.sunflower.pojo;
 2 
 3 /**
 4  *  学生实体类
 5  */
 6 public class Student {
 7     private String name;
 8     private int age;
 9 
10     public String getName() {
11         return name;
12     }
13 
14     public void setName(String name) {
15         this.name = name;
16     }
17 
18     public int getAge() {
19         return age;
20     }
21 
22     public void setAge(int age) {
23         this.age = age;
24     }
25 
26 }

这个类在这个测试中没有实际用途，只不过让这个测试看起来有这个意思。

com.sunflower.yuan.dao.StudentDAO:

 1 package com.sunflower.yuan.dao;
 2 
 3 
 4 /**
 5  * 学生数据存取接口，操作底层数据
 6  */
 7 public interface StudentDAO {
 8     public void saveStudent();
 9 
10     public void removeStudent();
11 }

com.sunflower.yuan.daoimp.StudentDAOImp:

 1 package com.sunflower.yuan.daoimp;
 2 
 3 import com.sunflower.yuan.dao.StudentDAO;
 4 
 5 /**
 6  * 学生数据存取实现类
 7  */
 8 public class StudentDAOImp implements StudentDAO {
 9 
10     @Override
11     public void removeStudent() {
12         System.out.println("Student deleted! Spring test success");
13     }
14 
15     @Override
16     public void saveStudent() {
17         System.out.println("Student saved! Spring test success");
18     }
19 
20 }

com.sunflower.yuan.service.StudentService:

 1 package com.sunflower.yuan.service;
 2 
 3 /**
 4  * 学生业务处理接口
 5  */
 6 public interface StudentService {
 7     public void saveStudent();
 8 
 9     public void removeStudnet();
10 }

com.sunflower.yuan.serviceimp.StudentServiceImp:

 1 package com.sunflower.yuan.serviceimp;
 2 
 3 import com.sunflower.yuan.dao.StudentDAO;
 4 import com.sunflower.yuan.daoimp.StudentDAOImp;
 5 import com.sunflower.yuan.service.StudentService;
 6 
 7 /**
 8  * @author Caihanyuan
 9  * @time 2012-9-11 下午07:47:55
10  */
11 public class StudentServiceImp implements StudentService {
12     private StudentDAO studentDao = new StudentDAOImp();
13 
14     @Override
15     public void removeStudnet() {
16         studentDao.removeStudent();
17     }
18 
19     @Override
20     public void saveStudent() {
21         studentDao.saveStudent();
22     }
23 
24 }

com.sunflower.yuan.test.Test:

 1 package com.sunflower.yuan.test;
 2 
 3 import org.springframework.context.ApplicationContext;
 4 import org.springframework.context.support.ClassPathXmlApplicationContext;
 5 
 6 import com.sunflower.yuan.service.StudentService;
 7 import com.sunflower.yuan.serviceimp.StudentServiceImp;
 8 
 9 /**
10  * @author Caihanyuan
11  * @time 2012-9-11 下午07:53:57
12  */
13 public class Test {
14     public static void main(String[] args) {
15         ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
16         
17         //得到注入的bean
18         StudentService studentService = context.getBean("studentService", StudentServiceImp.class);
19         studentService.saveStudent();
20         studentService.removeStudnet();
21     }
22 }

第15行是通过解析xml配置文件获取Spring容器，第18行得到在配置文件中注入到Spring中的对象，注入的对象不能是接口。

applicationContext.xml:

1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans
3     xmlns="http://www.springframework.org/schema/beans"
4     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5     xmlns:p="http://www.springframework.org/schema/p"
6     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
7     
8     <bean id="studentService" class="com.sunflower.yuan.serviceimp.StudentServiceImp"></bean>
9 </beans>