手把手教你搭建Spring开发环境(IDEA)

矫情吗；* 2022-12-08 05:15 249阅读 0赞

首先打开IDEA,HAHAHA

1.  创建Maven项目，我一般习惯用使用maven-archetype-webapp骨架。（为啥使用骨架： *maven骨架的使用*能够帮我们快速的构建结构一致的项目,省时省力。）

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1.  改下项目名称和GroupId
    
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2.  在pom.xml中添加依赖（记得刷新maven）
    
        <dependencies>
        
            <dependency>
              <groupId>junit</groupId>
              <artifactId>junit</artifactId>
              <version>4.11</version>
              <scope>test</scope>
            </dependency>
        
            <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-context</artifactId>
              <version>5.0.2.RELEASE</version>
            </dependency>
        
            <dependency>
              <groupId>org.projectlombok</groupId>
              <artifactId>lombok</artifactId>
              <version>1.16.20</version>
              <scope>provided</scope>
            </dependency>
          </dependencies>
3.  完成目录结构
    
     *  一般你右击new一个Directory的时候，缺失的都会显示出来，你直接添加就可以了
    
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4.  然后需要添加spring的配置文件了。当然是再resoures下啦，我一般创建的文件名为bean.xml（看你自己喽，我是为了方便记忆）
    
     *  基本约束
        
            <?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">
            
            </beans>
     *  所有约束
        
            <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" 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 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
            </beans>
5.  Let\`s go来使用一下
    
    1.  创建一个实体类
        
            import lombok.Getter;
            import lombok.Setter;
            import lombok.ToString;
            
            @Getter
            @Setter
            @ToString
            public class Student { 
                private Integer id;
                private String name;
                private Integer age;
                private Integer score;
            
            }
    2.  创建对象交给spring来管理吧（在我们刚才的配置文件中添加）
        
            <?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="student" class="model.Student">
                    <property name="id" value="1"/>
                    <property name="name" value="mxh"/>
                    <property name="age" value="21"/>
                    <property name="score" value="85"/>
                </bean>
            </beans>
    3.  使用一哈看看效果
        
            import org.junit.Test;
            import org.springframework.context.ApplicationContext;
            import org.springframework.context.support.ClassPathXmlApplicationContext;
            
            public class SpringTest { 
            
                @Test
                public void f(){ 
                    //1.获取核心容器
                    ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");
                    //2.根据id获取对象
                    Student s = (Student) ac.getBean("student");
                    //3.处理对象
                    System.out.println(s);
                    System.out.println("test1 "+s.hashCode());
                }
            
                @Test
                public void f1(){ 
                    //1.获取核心容器
                    ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");
                    //2.根据id获取对象
                    Student s = (Student) ac.getBean("student");
                    //3.处理对象
                    System.out.println(s);
                    System.out.println("test2 "+s.hashCode());
                }
            }
        
        ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JhY2twYWNlXw_size_16_color_FFFFFF_t_70_pic_center]

我们可以看出是同一个对象，都来自于spring容器。

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[img-8jRZlWql-1600396874556_C_Users_apple_AppData_Roaming_Typora_typora-user-images_image-20200918093351817.png]: /images/20221123/ea9d47f217d34f439ff7c5d89ef87e52.png
[img-MZSMvwVq-1600396874560_C_Users_apple_AppData_Roaming_Typora_typora-user-images_image-20200918093548420.png]: /images/20221123/9d45d137fb0f421db7114cc3ac581a64.png
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