ApplicationContextAware获取Spring上下文，通过基类获取properties中的配置属性

说明： 该方法实现了，通过继承JAR包中基类来获取properties中配置的相关属性，并添加至spring容器中，供代码中使用。

1。 基类

package com.ffcs.icity.config;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;


/**
 * 此类用于存放框架相关的配置.
 *
 * 
 */
public abstract class BaseApplicationConfig implements InitializingBean {

	@Value("${log.isDumpRequest:false}")
	@FieldDescription("是否dump请求")
	private boolean isDumpRequest = false;

	@Value("${log.logger.root.level:DEBUG}")
	@FieldDescription("日志级别等级")
	private String logLevel = "DEBUG";

	public boolean isDumpRequest() {
		return isDumpRequest;
	}
	
	public String getLogLevel() {
		return logLevel;
	}

	@Override
	public String toString() {
		return ToStringBuilder.reflectionToString(this, ToStringStyle.DEFAULT_STYLE);
	}

	@Target({ ElementType.FIELD })
	@Retention(RetentionPolicy.RUNTIME)
	public @interface FieldDescription {
		String value();
	}

	@Override
	public void afterPropertiesSet() throws Exception {
//		this.originalApplicationConfig = BeanUtils.copyObject(this, "originalApplicationConfig");
	
	}

}

2。 配置文件内容

#log level
log.logger.root.level=DEBUG

#log open flag
log.isDumpRequest=true

3。 实现ApplicationContextAware接口，获取spring上下文相关类

package com.ffcs.icity.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;


/**
 * BaseApplicationConfig实例的获取
 * @author linwei
 *
 */
public class ApplicationConfigHolder implements ApplicationContextAware {

	private final static Logger logger = LoggerFactory.getLogger(ApplicationConfigHolder.class);
	
	private static BaseApplicationConfig applicationConfig;
	
	public static  T getApplicationConfig() {
		return (T)applicationConfig;
	}
	
	/**
	 * 通过实现ApplicationContextAware接口，获取Spring的实例上下文，并获取BaseApplicationConfig实例
	 */
	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

		//获取类型为BaseApplicationConfig的BEAN
		applicationConfig = applicationContext.getBean(BaseApplicationConfig.class);
		logger.info("loaded initial application config:{}", applicationConfig);
	}

}

package com.ffcs.icity.config;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;


/**
 * Spring上下文的获取
 * @author linwei
 *
 */
public class ApplicationContextHolder implements ApplicationContextAware{

	private static ApplicationContext applicationContext;

	public static ApplicationContext getApplicationContext() {
		return ApplicationContextHolder.applicationContext;
	}

	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		ApplicationContextHolder.applicationContext=applicationContext;		
	}
	
}

package com.ffcs.icity.config;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 此类保存当前请求的上下文信息.
 * 
 * 
 */
public class RequestContextHolder {

	/**
	 * 当前请求的请求对象
	 */
	private static ThreadLocal request = new ThreadLocal();

	/**
	 * 当前请求的请求对象
	 */
	private static ThreadLocal response = new ThreadLocal();

	/**
	 * 当前请求的请求参数
	 */
	private static ThreadLocal