java框架之spring基础应用

痛定思痛。 2022-09-23 03:59 149阅读 0赞

导入相关jar包：[http://pan.baidu.com/s/1boNcWDh][http_pan.baidu.com_s_1boNcWDh]

![Center][]

User.java

package com.dx.pojo;  
  
public class User \{  
private String username;  
private String password;  
public String getUsername() \{  
return username;  
\}  
public void setUsername(String username) \{  
this.username = username;  
\}  
public String getPassword() \{  
return password;  
\}  
public void setPassword(String password) \{  
this.password = password;  
\}  
@Override  
public String toString() \{  
return "User \[username=" + username + ", password=" + password + "\]";  
\}  
\}

配置文件applicationContext.xml(在src目录下)

<?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-3.0.xsd">  
  
<bean id="user" class="com.dx.pojo.User"></bean>  
</beans>

测试Test.java

package com.dx.test;  
  
import org.springframework.context.ApplicationContext;  
import org.springframework.context.support.ClassPathXmlApplicationContext;  
import org.springframework.context.support.FileSystemXmlApplicationContext;  
import com.dx.pojo.User;  
  
public class Test \{  
public static void main(String\[\] args) \{  
ApplicationContext ct = new ClassPathXmlApplicationContext("applicationContext.xml");  
ApplicationContext ct2 = new FileSystemXmlApplicationContext("E:/javawork/SpringTest/src/applicationContext.xml");  
  
User user = (User)ct2.getBean("user");  
user.setUsername("张三");  
user.setPassword("123456");  
System.out.println(user);  
\}  
\}

**【注意】：这里读取配置文件的方式只用于开发java程序或者是测试的时候，在开发web应用程序的时配置文件是由spring来自动读取的。读取的方式在开发web应用程序的时候做介绍**

[http_pan.baidu.com_s_1boNcWDh]: http://pan.baidu.com/s/1boNcWDh
[Center]: /images/20220721/25b774917efe4d43b7d894635df86216.png