使用maven搭建spring环境_maven配置成功后导入spring-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_40535641/article/details/114268839

本文通过一个具体的例子展示了如何在Spring框架中使用依赖注入（DI）。首先，通过pom.xml文件配置了所需的Spring模块和JUnit依赖。接着，在resources目录下创建了spring.xml配置文件，并定义了一个名为StudentDAOImpl的bean，设置了其属性并通过setter方法注入了相应的值。最后，通过ClassPathXmlApplicationContext启动应用上下文，获取并调用了StudentDAOImpl实例的方法。

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1、导入依赖包

pom.xml

<?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.baichi</groupId>
  <artifactId>spring_day1</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>spring_day1 Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
  </dependencies>

  <build>
    <finalName>spring_day1</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>8</source>
          <target>8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

2、根据源码包在resources目录下创建相同的包并创建spring.xml

在这里插入图片描述

setdi/spring.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">

<!--  必须在管理的类里边提供setter方法才可以设置值  -->
    <bean class="setdi.StudentDAOImpl" id="studentDAO">
        <property name="name" value="小陈"/>
        <property name="list">
            <list>
                <value>1</value>
                <value>12</value>
                <value>123</value>
            </list>
        </property>
        <property name="map">
            <map>
                <entry key="xxx" value="123"/>
                <entry key="www" value="456"/>
            </map>
        </property>
        <property name="properties">
            <props>
                <prop key="url">http://xxx.xxx.xxx</prop>
                <prop key="name">root</prop>
                <prop key="password">123456</prop>
            </props>
        </property>
    </bean>
</beans>

StudentDAO

package setdi;

public interface StudentDAO {
    void show();
}

StudentDAOImpl

package setdi;

import java.util.List;
import java.util.Map;
import java.util.Properties;

public class StudentDAOImpl implements StudentDAO {
    private String name;
    private List<Integer> list;
    private Map<String, String> map;
    private Properties properties;

    public void setName(String name) {
        this.name = name;
    }

    public void setList(List<Integer> list) {
        this.list = list;
    }

    public void setMap(Map<String, String> map) {
        this.map = map;
    }

    public void setProperties(Properties properties) {
        this.properties = properties;
    }

    @Override
    public void show() {
        System.out.println("name = " + name);
        for (Integer i:
        this.list){
            System.out.println("i = " + i);
        }
        map.forEach((key,value)-> System.out.println("key : " + key+"    value: "+value));
        System.out.println("==========遍历properties=============");
        properties.forEach((key,value)-> System.out.println("key:" + key+" value:"+value));
    }
}

TestStudentDAO

package setdi;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestStudentDAO {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("setdi/spring.xml");
        StudentDAO studentDAO = (StudentDAO) context.getBean("studentDAO");
        studentDAO.show();
    }
}