Spring学习笔记2:Spring HelloWorld

1:IntelliJ新建Maven工程

Spring学习笔记2:Spring HelloWorld

Spring学习笔记2:Spring HelloWorld

Spring学习笔记2:Spring HelloWorld

Spring学习笔记2:Spring HelloWorld

2:pom文件加入Spring依赖

<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.test</groupId>
<artifactId>SpringStack</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging> <name>SpringStack</name>
<url>http://maven.apache.org</url> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <spring.version>4.3.11.RELEASE</spring.version> </properties> <dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency> <!-- https://mvnrepository.com/artifact/org.testng/testng -->
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>6.11</version>
<scope>test</scope>
</dependency> <!-- 1.Spring核心依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 2.Spring dao依赖 -->
<!-- spring-jdbc包括了一些如jdbcTemplate的工具类 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 3.Spring web依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 4.Spring test依赖:方便做单元测试和集成测试 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency> </dependencies>
</project>

3:新建applicationContext.xml

新建resources文件夹,并在resources文件夹下建立applicationContext.xml文件

设置resources文件夹Mark as resources

IntelliJ File->Project Structure

Spring学习笔记2:Spring HelloWorld

<?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:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd"> <bean id="HelloNameObject" class="com.test.helloworld.HelloName">
<property name="name" value="Spring"></property>
</bean> </beans>

4:新建HelloName类

public class HelloName {
private String name; public void setName(String name) {
this.name = name;
} public void hello(){
System.out.println("Hello:"+name);
} }

5:test目录加入测试类HelloNameTest

public class HelloNameTest  {
@Test
public void testHelloName() {
//1:创建Spring IOC容器对象
//ApplicationContext代表IOC容器
//ClassPathXmlApplicationContext是ApplicationContext接口的实现类,该实现类从类路径下来加载配置文件
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
//2:从IOC容器中获取Bean实例
//利用id定位IOC容器的Bean
HelloName nameObject = (HelloName)ctx.getBean("HelloNameObject"); //HelloName nameObject = ctx.getBean("HelloName");
//利用类型返回IOC容器中的Bean,但要求IOC容器中,必须只能有一个该类型的Bean
//3:调用hello()方法
nameObject.hello();
}
}

6:项目目录结构

Spring学习笔记2:Spring HelloWorld

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