銆怱pring銆?7 鍚庣画鐨勫涔犺ˉ鍏?vol1

Posted 2020-12-18

鏍囩锛?a href='http://www.mamicode.com/so/1/tst' title='tst'>tst   琛ュ厖   ack   sql   瀹瑰櫒   property   nfa   str   rod   

鎺у埗鍙嶈浆Inverse Of Control鐨勬紨鍙橈細

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鐢盙radeDao鎺ュ彛鎸囧悜GradeDaoImpl

鍐嶇敱GradeService鎸囧悜GradeServiceImpl

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瀵硅薄鐨勫垱寤烘槸鐢辫繖涓笂灞傜殑鍐呴儴鎵€鍐冲畾

 

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mysql瀹炵幇锛孫racle瀹炵幇锛孭ostgreSQL瀹炵幇绛夌瓑

 

瀵硅薄鐨勫垱寤哄彲浠ョЩ浜ゅ埌澶栭儴锛屾垜浠湪鍐呴儴璁剧疆setter娉ㄥ叆鍗冲彲锛屾垨鑰呬娇鐢ㄥ甫鍙傛瀯閫犲櫒

 

閫氳繃setter鎴栬€呭甫鍙傛瀯閫犲櫒锛屾垜浠彲浠ヤ粠鏈眰鐨勫唴閮ㄥ垱寤哄璞¤繖涓帶鍒舵潈鍔涳紝绉讳氦鍒颁簡澶栭潰

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閫氳繃璇诲彇閰嶇疆鏂囦欢鐨勫舰寮忚В闄よ€﹀悎

 

棣栧厛鏄厤缃枃浠讹細bean.properties

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AaaDao = ioc.dao.AaaDaoImpl2
AaaService = ioc.service.AaaServiceImpl2

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鐒跺悗鏀归€犳垜浠殑BeanFactory

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className搴旇鎹㈡垚鍙玝eanName

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鐬庢壇鐨勪唬鐮侊細

 

Bean宸ュ巶

package ioc;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

/**
 * @author DaiZhiZhou
 * @file OA-Project
 * @create 2020-07-24 22:57
 */
public class BeanFactory {

    private static Map<String,Object> beanContainer = new HashMap<>();

    static {
        try {
            // InputStream inputStream = BeanFactory.class.getClassLoader().getResourceAsStream("bean.properties");
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            String file = BeanFactory.class.getClassLoader().getResource("bean.properties").getFile();
            System.out.println(file);
            InputStream inputStream = new FileInputStream(new File(file));

            Properties properties = new Properties();
            properties.load(inputStream);

            Enumeration<Object> keys = properties.keys();

            while (keys.hasMoreElements()) {
                String key = (String)keys.nextElement();
                String value = properties.getProperty(key);

                Class<?> classByValue = Class.forName(value);
                Object valueInstance = classByValue.newInstance();
                beanContainer.put(key, valueInstance);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static <Bean>Bean getBean(String className, Class<Bean> beanClass) {
        Object o = beanContainer.get(className);
        return (Bean)o;
    }

}

properties:

AaaDao = ioc.dao.AaaDaoImpl2
AaaService = ioc.service.AaaServiceImpl2

娴嬭瘯绫伙細鍋囪鏄鍥剧殑Servlet

package ioc.servlet;

import ioc.BeanFactory;
import ioc.dao.AaaDao;
import ioc.dao.AaaDaoImpl;
import ioc.service.AaaService;
import ioc.service.AaaServiceImpl;
import ioc.service.AaaServiceImpl2;
import org.junit.Test;

/**
 * @author DaiZhiZhou
 * @file OA-Project
 * @create 2020-07-24 22:48
 */
public class AaaServletFake {

    private AaaService aaaService;

    public void setAaaService(AaaService aaaService) {
        this.aaaService = aaaService;
    }

    @Test
    public void toAaaListPage() {
        setAaaService(new AaaServiceImpl(new AaaDaoImpl()));
        aaaService.getAaaList();
    }

    @Test
    public void toAaaListPageByFactoryProduct() {
        //this.setAaaService(BeanFactory.getAaaService());
        aaaService.getAaaList();
    }

    @Test
    public void toAaaListPageByFactoryProductPropertyFileInject() {
        AaaDao aaaDao = BeanFactory.getBean("AaaDao", AaaDao.class);
        AaaServiceImpl2 aaaServiceImpl2 = BeanFactory.getBean("AaaService", AaaServiceImpl2.class);
        aaaServiceImpl2.setAaaDao(aaaDao);
        this.setAaaService(aaaServiceImpl2);
        this.aaaService.getAaaList();
    }

}

 

鍏充簬娉ㄥ叆闂鐨勫啀琛ュ厖锛?/h2>

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闈欐€佸伐鍘傝幏鍙?nbsp;鍜?nbsp;宸ュ巶瀹炰緥鏂规硶鑾峰彇锛?/h3>

璇︾粏瑙侊細

http://123.57.58.29/blog/1591625710261

 

闈欐€佸伐鍘?/p>

    <!-- 姝ょ鏂瑰紡鏄?  
     浣跨敤 StaticFactory 绫讳腑鐨勯潤鎬佹柟娉?createAccountService 鍒涘缓瀵硅薄锛屽苟瀛樺叆 spring 瀹瑰櫒 
       id 灞炴€э細鎸囧畾 bean 鐨?id锛岀敤浜庝粠瀹瑰櫒涓幏鍙?  
       class 灞炴€э細鎸囧畾闈欐€佸伐鍘傜殑鍏ㄩ檺瀹氱被鍚?  
       factory-method 灞炴€э細鎸囧畾鐢熶骇瀵硅薄鐨勯潤鎬佹柟娉? 
     -->
    
       <bean id="accountService" class="com.tc51.factory.StaticFactory" factory-method="createAccountService"></bean>

瀹炰緥宸ュ巶

銆€銆€<!--鍒涘缓宸ュ巶瀵硅薄-->
    <!--鍏堥€氳繃瀹炰緥宸ュ巶鍒涘缓瀵硅薄-->
    <bean id="bean3Factory" class="com.tc51.factory.Bean3Factory"></bean>
    <bean id="accountService" factory-bean="bean3Factory" factory-method="createAccountService"></bean>