spring基于java配置的例子

╰+哭是因爲堅強的太久メ 2023-06-25 10:24 2阅读 0赞

1、配置文件config.properties

#//设置UI样式，可选项：STYLE_STANDARD/style_standard,STYLE_ACRYL/style_acryl,STYLE_BEAUTYEYE/style_beautyeye
    lookAndFeelClass=com.jtattoo.plaf.acryl.AcrylLookAndFeel
    
    #当前账户
    fullName=sunshizhuo

2、对应的java类“Config.java”

/**  
     * @Title: Style.java
     * @Package com.acconsys.ids.config
     * @Description: TODO(用一句话描述该文件做什么)
     * @author 35725
     * @date 2019年12月27日 下午2:49:03 
     * @version V1.0  
     */
    
    package com.acconsys.ids.config;
    
    import java.io.IOException;
    import java.util.Properties;
    
    /**
     * @ClassName: Style
     * @Description: TODO(这里用一句话描述这个类的作用)
     * @author 35725
     * @date 2019年12月27日
     *
     */
    
    public class Config {
    	private String lookAndFeelClass;
    
    	private String fullName;
    	
    	
    	/**
    	 * 创建一个新的实例 Config
    	 *
    	 */
    
    	public Config() {
    		
    		initConfig();
    		
    	}
    
    	
    	    /**
    	     * @Title: initConfig
    	     * @Description: TODO(这里用一句话描述这个方法的作用)
    	     * @param  参数
    	     * @return void 返回类型
    	     * @throws
    	     */
    	    
    	void initConfig() {
    		Properties config = new Properties();
    		try {
    			config.load(this.getClass().getClassLoader().getResourceAsStream("config/config.properties"));
    			this.setFullName(config.getProperty("fullName"));
    			this.setLookAndFeelClass(config.getProperty("lookAndFeelClass"));
    			
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		
    	}
    
    	public String getLookAndFeelClass() {
    		return lookAndFeelClass;
    	}
    
    	public void setLookAndFeelClass(String lookAndFeelClass) {
    		this.lookAndFeelClass = lookAndFeelClass;
    	}
    
    	public String getFullName() {
    		return fullName;
    	}
    
    	public void setFullName(String fullName) {
    		this.fullName = fullName;
    	}
    
    	@Override
    	public String toString() {
    		return "Config [lookAndFeelClass=" + lookAndFeelClass + ", fullName=" + fullName + "]";
    	}
    	
    	
    
    }

3、ConfigAnnotation.java  注意，所有@Bean注解的方法都是public，如果是private，那么会报错，如下

/**  
         * @Title: ConfigAnnotation.java
         * @Package com.acconsys.ids.config
         * @Description: TODO(用一句话描述该文件做什么)
         * @author 35725
         * @date 2019年12月28日 下午2:32:41 
         * @version V1.0  
         */
        
    package com.acconsys.ids.config;
    
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.stereotype.Component;
    
    /**
         * @ClassName: ConfigAnnotation
         * @Description: TODO(这里用一句话描述这个类的作用)
         * @author 35725
         * @date 2019年12月28日
         *
         */
    
    @Configuration
    public class ConfigAnnotation {
    	
    	@Bean(name = "config")
    	public Config config() {
    		return new Config();
    	}
    	
    	@Bean(name = "config1")
    	public Config config1() {
    		return new Config();
    	}
    	
    
    }

4、ConfigAnnotationTest.java

/**  
         * @Title: ConfigAnnotationTest.java
         * @Package com.acconsys.ids.config
         * @Description: TODO(用一句话描述该文件做什么)
         * @author 35725
         * @date 2019年12月28日 下午2:34:00 
         * @version V1.0  
         */
        
    package com.acconsys.ids.config;
    
    import org.springframework.context.annotation.AnnotationConfigApplicationContext;
    
    /**
         * @ClassName: ConfigAnnotationTest
         * @Description: TODO(这里用一句话描述这个类的作用)
         * @author 35725
         * @date 2019年12月28日
         *
         */
    
    public class ConfigAnnotationTest {
    	
    	public static void main(String[] args) {
    		AnnotationConfigApplicationContext acac = new AnnotationConfigApplicationContext();
    		acac.register(ConfigAnnotation.class);
    		acac.refresh();
    		
    		Config config = (Config) acac.getBean("config");
    		System.out.println(config.toString());
    		
    		System.out.println("+++++++++++++++++++++++++++++++++++++");
    		Config config1 = (Config) acac.getBean("config1");
    		System.out.println(config1.toString());
    		
    		acac.close();
    		
    	}
    
    }

6、输出

15:13:56.318 [main] DEBUG org.springframework.context.annotation.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@7cef4e59
    15:13:56.335 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor'
    15:13:56.469 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerProcessor'
    15:13:56.471 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory'
    15:13:56.473 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor'
    15:13:56.475 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.context.annotation.internalCommonAnnotationProcessor'
    15:13:56.483 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'configAnnotation'
    15:13:56.489 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'config'
    15:13:56.504 [main] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'config1'
    Config [lookAndFeelClass=com.jtattoo.plaf.acryl.AcrylLookAndFeel, fullName=sunshizhuo]
    +++++++++++++++++++++++++++++++++++++
    Config [lookAndFeelClass=com.jtattoo.plaf.acryl.AcrylLookAndFeel, fullName=sunshizhuo]
    15:13:56.543 [main] DEBUG org.springframework.context.annotation.AnnotationConfigApplicationContext - Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@7cef4e59, started on Sat Dec 28 15:13:56 CST 2019