IDEA中Spring的配置使用

矫情吗；* 2022-04-03 14:07 286阅读 0赞

### IDEA中Spring的配置使用 ###

*  1.首先创建JavaEE Web Application项目，勾选Spring，Libraries选择Set up library later。（有spring jar包的前提下，没有jar包选择Download）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjAzOTY5OQ_size_16_color_FFFFFF_t_70][]

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*  2.项目目录结构

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjAzOTY5OQ_size_16_color_FFFFFF_t_70 2][]

*  3.把lib包中struts2的所有jar包选中，右键，选择Add as Library

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjAzOTY5OQ_size_16_color_FFFFFF_t_70 3][]

*  4.Ctrl+Alt+Shift+s打开项目结构，进行配置

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjAzOTY5OQ_size_16_color_FFFFFF_t_70 4][]

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*  5.一个简单的spring example 
 *  5.1编写一个UserDao接口

package pers.wpc.dao;
    
    public interface UserDAO {
        public void save();
    }

*  5.2编写实现类UserDao

UserDao.java

package pers.wpc.dao.impl;
    
    import pers.wpc.dao.UserDAO;
    
    public class UserDao implements UserDAO {
    
        @Override
        public void save() {
            System.out.println("save user");
        }
    }

*  5.3编写测试类

UserService.java

package pers.wpc.test;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    import pers.wpc.dao.UserDAO;
    
    public class UserService {
        private UserDAO userDAO;
        public void setUserDAO(UserDAO userDAO){
            this.userDAO = userDAO;
        }
        public void addUser(){
            userDAO.save();
        }
    
        public static void main(String[] args) {
            ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContent.xml");
            UserService us =(UserService)ac.getBean("UserService");
            us.addUser();
        }
    }

*  5.4在src下编写一个applicationContext.xml配置文件并进行依赖注入配置，xml需导入Model-->Spring中

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjAzOTY5OQ_size_16_color_FFFFFF_t_70 6][]

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"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
        <bean id="UserDAO" class="pers.wpc.dao.impl.UserDao"/>
        <bean id="UserService" class="pers.wpc.test.UserService">
        <property name="userDAO">
            <ref bean="UserDAO"/>
        </property>
        </bean>
    </beans>

*  5.5测试

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjAzOTY5OQ_size_16_color_FFFFFF_t_70 7][]

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