发表于: 2022-04-19 19:38:15

1 595


尝试测试

1、创建sping项目,配置applicationContext.xml

代码片段:

<?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">

 

    <!--把testDao对象的创建权交给Spring-->

    <bean id="testDao" class="dao.TestDaoImpl"></bean>

</beans>


2、创建test包,在test包下创建测试类SpringTest

package test;

 

import dao.TestDao;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.testng.annotations.Test;

 

public class SpringTest {

 

    @Test

    public void demo(){

        //初始化Spring容器ApplicationContext,加载配置文件

        ApplicationContext application = new ClassPathXmlApplicationContext("applicationContext.xml");

        //通过容器获取testDao实例

        TestDao testDao = (TestDao) application.getBean("testDao");

        testDao.sayHello();

    }

 

}

创建dao包,在dao包下创建TestDao接口和TestDao接口的实现类

Test接口代码片段:

package dao;

 

public interface TestDao {

    public void sayHello();

}

TestDogimpl代码片段:

package dao;

 

public class TestDaoImpl implements TestDao {

    @Override

    public void sayHello() {

        System.out.println("Hello,Spring!");

    }

}

测试运行结果:

四月 19, 2022 1:48:29 下午 com.mchange.v2.log.MLog 

信息: MLog clients using java 1.4+ standard logging.

四月 19, 2022 1:48:29 下午 com.mchange.v2.c3p0.C3P0Registry 

信息: Initializing c3p0-0.9.5.2 [built 08-December-2015 22:06:04 -0800; debug? true; trace: 10]

Hello,Spring!



创建SpringBoot项目

创建完成测试时,jdk版本问题导致测试失败。


19:31 All files are up-to-date

19:31 Error running 'MybitisApplication': No jdk for module 'mybitis'

19:31 All files are up-to-date

19:31 Error running 'MybitisApplication': No jdk for module 'mybitis'

19:31 All files are up-to-date

19:31 Error running 'MybitisApplication': No jdk for module 'mybitis'

 jdk模块缺失。


补回jdk模块

将pom文件代码片段补全:

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-parent</artifactId>
       <version>2.5.6</version>
       <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com</groupId>
   <artifactId>mybitis</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>mybitis</name>
   <description>Demo project for Spring Boot</description>
   <properties>
       <java.version>1.8</java.version>
   </properties>
   <dependencies>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-jdbc</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
       </dependency>
       <dependency>
           <groupId>org.mybatis.spring.boot</groupId>
           <artifactId>mybatis-spring-boot-starter</artifactId>
           <version>2.2.0</version>
       </dependency>

       <dependency>
           <groupId>mysql</groupId>
           <artifactId>mysql-connector-java</artifactId>
           <scope>runtime</scope>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
           <scope>test</scope>
       </dependency>
   </dependencies>

   <build>
       <plugins>
           <plugin>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-maven-plugin</artifactId>
           </plugin>
       </plugins>
   </build>

</project>


测试结果:

对于基础的知识了解的还是够全面,很多的基础经常出现错误。



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