Spring学习笔记(二) --- Spring开发环境搭建

傷城~ 2021-09-26 19:38 371阅读 0赞

# 一、环境 #

1、 jdk1.6 以上

2、 spring核心包

![70][]

3、 eclipse

# 二、搭建步骤 #

1、 新建java工程目录，将需要的jar导入到工程中。

2、 编写一个 Book 类， 用于数据的存储

注意： 给实体类一个空参的构造方法，否则启动spring会报错

public class Book {
    	private String isbn;
    	private String bookName;
    	private Date publishDate;
    	private double price;
    	public Book() {
    		super();
    	}
    	public String getIsbn() {
    		return isbn;
    	}
    	public void setIsbn(String isbn) {
    		this.isbn = isbn;
    	}
    	public String getBookName() {
    		return bookName;
    	}
    	public void setBookName(String bookName) {
    		this.bookName = bookName;
    	}
    	public Date getPublishDate() {
    		return publishDate;
    	}
    	public void setPublishDate(Date publishDate) {
    		this.publishDate = publishDate;
    	}
    	public double getPrice() {
    		return price;
    	}
    	public void setPrice(double price) {
    		this.price = price;
    	}
    
    	
    	@Override
    	public String toString() {
    		return "Book [isbn=" + isbn + ", bookName=" + bookName + ", publishDate=" + publishDate + ", price=" + price
    				+"]";
    	}
    	
    }

3、 编写spring 核心配置文件applicationContext.xml， 把实体类交给spring容器管理

<?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="Book" class="com.neuede.springcore.Book">
    	 </bean>
     
    </beans>

4、 编写测试类TestBook.java

public static void main(String[] args) {
    		
    		String configLocation = "config/applicationContext.xml";
    		ApplicationContext context = new ClassPathXmlApplicationContext(configLocation);
    		Book book = (Book)context.getBean("Book");
    		book.setBookName("Spring框架");
    		System.out.println(book.toString());
    	}

5、运行结果

![70 1][]

[70]: /images/20210923/7c07da818fb8421ba82584af869f987e.png
[70 1]: /images/20210923/82da2d9f86054ee39074d6f27704c3a8.png