Spring-框架-开发流程（简单demo）

「爱情、让人受尽委屈。」 2023-06-06 08:14 41阅读 0赞

## 流程： ##

1.  创建maven项目
2.  添加依赖
3.  创建spring核心配置文件applicationContext.xml
4.  通过spring创建javabean对象的容器
5.  通过spring容器创建javabean对象

创建maven项目：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9odWFuZ2hhaXRhby5ibG9nLmNzZG4ubmV0_size_16_color_FFFFFF_t_70][]

pom.xml文件：

<?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.spring</groupId>
      <artifactId>demo</artifactId>
      <version>1.0-SNAPSHOT</version>
    
      <name>demo</name>
      
      <url>http://www.example.com</url>
    
      <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <spring.version>5.1.2.RELEASE</spring.version>
      </properties>
    
      <dependencies>
        
        <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>
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context-support</artifactId>
          <version>${spring.version}</version>
        </dependency>
    
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
      </dependencies>
    
      <build>
        <pluginManagement>
          <plugins>
            
            <plugin>
              <artifactId>maven-clean-plugin</artifactId>
              <version>3.1.0</version>
            </plugin>
            
            <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-jar-plugin</artifactId>
              <version>3.0.2</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>
            
            <plugin>
              <artifactId>maven-site-plugin</artifactId>
              <version>3.7.1</version>
            </plugin>
            <plugin>
              <artifactId>maven-project-info-reports-plugin</artifactId>
              <version>3.0.0</version>
            </plugin>
          </plugins>
        </pluginManagement>
      </build>
    </project>

UserDao类：

package com.spring.dao;
    
    /**
     *
     * @ClassName: UserDao
     * @Description: TODO
     * @Version V1.0
     **/
    public class UserDao {
    
        /***
         * @Description //保存方法
         **/
        public int save(){
            System.out.println("数据保存成功！");
            return 1;
        }
    }

applicationContext.xml文件：

<?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="com.spring.dao.UserDao">
            
        </bean>
    
    </beans>

测试文件：

package com.spring.dao;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    /**
     *
     * @ClassName: Test
     * @Description: TODO
     * @Version V1.0
     **/
    public class Test {
        public static void main(String[] args) {
            ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
            UserDao userDao = (UserDao)context.getBean(UserDao.class);
            userDao.save();
        }
    }

运行结果：

![20191014173337156.png][]

总结：

spring框架整合最简单demo就完成

通过bean容器，按需分配

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9odWFuZ2hhaXRhby5ibG9nLmNzZG4ubmV0_size_16_color_FFFFFF_t_70]: /images/20230601/59e5c580b4ee48f09c25f020029acc47.png
[20191014173337156.png]: /images/20230601/06561ffe47324e36a575a315c305b8af.png