SSM 实训笔记 -03- Spring入门实例- Hello Word！

分手后的思念是犯贱 2022-03-31 08:07 263阅读 0赞

### SSM 实训笔记 -03- Spring入门实例- Hello Word！ ###

**步骤：**

（1）新建项目，参考 [SSM 实训笔记 -01- Junit 单元测试][SSM _ -01- Junit] 中的步骤一  
（2）在 main/java 目录下，新建包 com.spring  
（3）在上述包下，新建 HelloWorld.java，编写代码：

package com.spring;
    
    public class HelloWorld { 
        public void sayHello (String str){ 
            System.out.println("HelloWorld " + str);
        }
    }

（4）使用 maven 配置 Spring -core 包和 Context 包  
打开：

*  [https://mvnrepository.com/artifact/org.springframework/spring-core][https_mvnrepository.com_artifact_org.springframework_spring-core]
 *  [https://mvnrepository.com/artifact/org.springframework/spring-context][https_mvnrepository.com_artifact_org.springframework_spring-context]  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70]  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70 1]

**粘贴到 pom.xml 文件中：**

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.xpwi</groupId>
        <artifactId>firstMaven</artifactId>
        <version>1.0-SNAPSHOT</version>
        <dependencies>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>RELEASE</version>
                <scope>compile</scope>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
                <version>5.1.3.RELEASE</version>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>5.1.3.RELEASE</version>
            </dependency>
    
    </project>

（5）在 resource 中新建一个 SpringConfig 文件，命名为 bean.xml ：  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70 2][]

（6）bean.xml 内容为：

<?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="hello" class="com.spring.HelloWorld"></bean>
    </beans>

（7）在 Test/java 目录中，新建测试类 TestSpring.java 文件，内容为：

import com.spring.HelloWorld;
    import org.junit.Test;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class TestSpring { 
        @Test
        public void testSpring(){ 
    
            ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");
    
            HelloWorld hw = (HelloWorld) ac.getBean("hello");
            String name = JOptionPane.showInputDialog("请输入一个名字");
            hw.sayHello(name);
        }
    }

### 运行程序！ ###

大家可能遇到错误，应该就是使用 JUnit 的问题，请参考：  
[SSM 实训笔记 - Junit 单元测试][SSM _ -01- Junit]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70 3][] ![20190102175810743.png][]

### 更多文章链接 ###

*  [SSM 实训笔记][SSM]

[SSM _ -01- Junit]: https://blog.csdn.net/qq_40147863/article/details/85611094
[https_mvnrepository.com_artifact_org.springframework_spring-core]: https://mvnrepository.com/artifact/org.springframework/spring-core
[https_mvnrepository.com_artifact_org.springframework_spring-context]: https://mvnrepository.com/artifact/org.springframework/spring-context
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70]: /images/20220331/eb17c2b4afce496eb76eeba0a74d4c1d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70 1]: /images/20220331/539674cc98e947c28b0d4a526c3850b9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70 2]: /images/20220331/2e09af8d4b2646c09685c858fb052903.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20190102180018560.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMTQ3ODYz,size_16,color_FFFFFF,t_70
[20190102175810743.png]: /images/20220331/5279225736dd447a8e6725b7de20fe61.png
[SSM]: https://blog.csdn.net/qq_40147863/article/category/8577666