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JAVA 核心笔记 || [xxx] Spring 之 Jdbc

JAVA 核心笔记 || [xxx] Spring 之 Jdbc

作者: 魔介 | 来源:发表于2018-12-05 18:13 被阅读0次

    JdbcSupport

    用法

    App.java

    
    import com.mj.dao.JdbcSupportDao;
    import com.mj.dao.JdbcTempDao;
    import com.mj.dao.UserDao;
    import com.mj.model.ModelUser;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    import org.springframework.jdbc.core.support.JdbcDaoSupport;
    
    import javax.jws.WebParam;
    import java.io.FileNotFoundException;
    
    public class App {
    
    
    
        public static void main(String args[]) throws FileNotFoundException{
            /*
            //ClassPathXmlApplicationContext
            ApplicationContext context = new ClassPathXmlApplicationContext("com/mj/xml/Bean.xml");
            BeanSay sa = (BeanSay) context.getBean("BeanSay");
            sa.setMsg("__Spring");
            sa.talk();
    
            //FileSystemXmlApplicationContext
            ApplicationContext fileContext = new FileSystemXmlApplicationContext("/src/com/mj/xml/Bean.xml");
            BeanSay sa1 = (BeanSay) fileContext.getBean("BeanSay");
            sa1.setMsg("=Spring====");
            sa1.talk();
    
            ApplicationContext animalContext = new ClassPathXmlApplicationContext("com/mj/xml/Bean.xml");
            BeanAnimal ani =  (BeanAnimal) animalContext.getBean("Animal");
            ani.setAnimalName("dog");
            ani.showAnimal();
    
            BeanAnimal animal =  (BeanAnimal) animalContext.getBean("Animal");
            animal.setAnimalName("pig");
            animal.showAnimal();
    
            // init method   destroy method
            BeanLife life = (BeanLife) context.getBean("BeanLife");
            life.showName();
    
            //BeanDog 继承  BeanAnimal
            BeanDog dog = (BeanDog)context.getBean("BeanDog");
            dog.showAnimal();
            //加载多配置文件
            BeanUser user = (BeanUser)context.getBean("BeanUser");
            user.showUser();
            */
    
    
            /*
            ApplicationContext annotationCtx = new AnnotationConfigApplicationContext(BeanConfig.class);
            IBean beanPerson = (IBean) annotationCtx.getBean("beanPerson");
            beanPerson.show();
    
            IBean beanStu = (IBean)annotationCtx.getBean("beanStu");
            beanStu.show();
    
            IBean beanTch = (IBean)annotationCtx.getBean("beanTch");
            beanTch.show();
            */
    
            /*
            // Setter 注入
            ApplicationContext context = new ClassPathXmlApplicationContext("com/mj/xml/BeanDL.xml");
            BeanShowHelper hps = (BeanShowHelper) context.getBean("BeanShowHelper");
            hps.show();
    
            //构造函数注入
            BeanHideHelper bhh = (BeanHideHelper) context.getBean("BeanHideHelper");
            bhh.show();
            */
    
            // Jdbc
            ApplicationContext context = new ClassPathXmlApplicationContext("com/mj/xml/jdbc/BeanJdbc.xml");
            UserDao ud = (UserDao) context.getBean("UserDao");
            ModelUser modelU = new ModelUser();
            modelU.setName("mjjjjjj");
            ud.insert(modelU);
    
            ModelUser rsU = ud.findByID(4);
            System.out.println( rsU.getName());
    
            // JdbcTemplate
            ModelUser tempU = new ModelUser();
            tempU.setName("=JdbcTemplate=");
            JdbcTempDao jt = (JdbcTempDao)context.getBean("JdbcTempDao");
            jt.insert(tempU);
    
            //JdbcSupport
            ModelUser supportU = new ModelUser();
            supportU.setName("==JdbcSupport==");
            JdbcSupportDao sd = (JdbcSupportDao)context.getBean("JdbcSupportDao");
            sd.insert(supportU);
    
    
    
    
    
        }
    }
    
    

    JdbcSupportDao.java


    package com.mj.dao;

    import com.mj.model.ModelUser;
    import org.springframework.jdbc.core.support.JdbcDaoSupport;

    import javax.sql.DataSource;

    public class JdbcSupportDao extends JdbcDaoSupport {

    public  void insert(ModelUser u){
    
        String sql = "INSERT INTO user (name) VALUES (?)";
    
        getJdbcTemplate().update(sql, new Object[] {u.getName()});
    
    }
    

    }


    BeanJdbc.xml

    <!--
    <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-2.5.xsd">
    
        <import resource="Spring-datasource.xml" />
        <import resource="UserDao.xml" />
    
    </beans>
    -->
    
    <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-2.5.xsd">
    
        <!-- mysql bean -->
        <bean id="dataSource"
              class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    
            <property name="driverClassName" value="com.mysql.jdbc.Driver" />
            <property name="url" value="jdbc:mysql://127.0.0.1:3306/Person" />
            <property name="username" value="root" />
            <property name="password" value="654321" />
        </bean>
    
        <bean id="UserDao" class="com.mj.dao.UserDao" >
            <property name="dataSource" ref="dataSource" ></property>
        </bean>
    
        <!-- JdbcTemplate -->
        <bean id="JdbcTempDao" class="com.mj.dao.JdbcTempDao" >
            <property name="dataSource" ref="dataSource" ></property>
        </bean>
    
        <!-- JdbcSupport -->
        <bean id="JdbcSupportDao" class="com.mj.dao.JdbcSupportDao">
            <property name="dataSource" ref="dataSource" ></property>
    
        </bean>
    
    </beans>
    

    运行

    [mysql:][db:Person]>[mysql:][db:Person]>select * from user;
    +----+-----------------+
    | id | name |
    +----+-----------------+
    | 1 | jgg |
    | 2 | MJ |
    | 3 | mjjjjjj |
    | 4 | mjjjjjj |
    | 5 | mjjjjjj |
    | 6 | mjjjjjj |
    | 7 | mjjjjjj |
    | 8 | mjjjjjj |
    | 9 | mjjjjjj |
    | 10 | mjjjjjj |
    | 11 | mjjjjjj |
    | 12 | =JdbcTemplate= |
    | 13 | mjjjjjj |
    | 14 | =JdbcTemplate= |
    | 15 | ==JdbcSupport== |
    +----+-----------------+
    15 rows in set (0.00 sec)

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