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:

package com.sunflower.pojo;

/**
 *  学生实体类
 */
public class Student {
    private String name;
    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

}

 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:

package com.sunflower.yuan.dao;


/**
 * 学生数据存取接口，操作底层数据
 */
public interface StudentDAO {
    public void saveStudent();

    public void removeStudent();
}

 

com.sunflower.yuan.daoimp.StudentDAOImp:

package com.sunflower.yuan.daoimp;

import com.sunflower.yuan.dao.StudentDAO;

/**
 * 学生数据存取实现类
 */
public class StudentDAOImp implements StudentDAO {

    @Override
    public void removeStudent() {
        System.out.println("Student deleted! Spring test success");
    }

    @Override
    public void saveStudent() {
        System.out.println("Student saved! Spring test success");
    }

}

 

com.sunflower.yuan.service.StudentService:

package com.sunflower.yuan.service;

/**
 * 学生业务处理接口
 */
public interface StudentService {
    public void saveStudent();

    public void removeStudnet();
}

 com.sunflower.yuan.serviceimp.StudentServiceImp:

package com.sunflower.yuan.serviceimp;

import com.sunflower.yuan.dao.StudentDAO;
import com.sunflower.yuan.daoimp.StudentDAOImp;
import com.sunflower.yuan.service.StudentService;

/**
 * @author Caihanyuan
 * @time 2012-9-11 下午07:47:55
 */
public class StudentServiceImp implements StudentService {
    private StudentDAO studentDao = new StudentDAOImp();

    @Override
    public void removeStudnet() {
        studentDao.removeStudent();
    }

    @Override
    public void saveStudent() {
        studentDao.saveStudent();
    }

}

 com.sunflower.yuan.test.Test:

package com.sunflower.yuan.test;

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

import com.sunflower.yuan.service.StudentService;
import com.sunflower.yuan.serviceimp.StudentServiceImp;

/**
 * @author Caihanyuan
 * @time 2012-9-11 下午07:53:57
 */
public class Test {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        
        //得到注入的bean
        StudentService studentService = context.getBean("studentService", StudentServiceImp.class);
        studentService.saveStudent();
        studentService.removeStudnet();
    }
}

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:

<?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:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
    
    <bean id="studentService" class="com.sunflower.yuan.serviceimp.StudentServiceImp"></bean>
</beans>