Spring 重要功能

--引用参考

1、读取本地管理的属性参数

<!-- Spring提供的读取属性文件cfg.properties参数的配置 -->
    <bean id="configBean" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
	    <property name="ignoreResourceNotFound" value="true" />
	    <property name="locations">
	        <list>
	        		<value>classpath:com/jy/cfg/properties/cfg.properties</value>
	        </list>
	    </property>
	    <property name="fileEncoding">
	    	<value>UTF-8</value>
	    </property>
    </bean>

使用：
/**
     * 最大连接数
     * （读本地cfg.properties配置文件）
     */
    @Value("${jy.param.http.pool.maxTotal}")
    private int maxTotal;

--浅谈Spring的PropertyPlaceholderConfigurer
https://blog.csdn.net/blueboz/article/details/54808915
https://www.cnblogs.com/dream-to-pku/p/6367396.html
https://blog.csdn.net/u013491262/article/details/52489701
https://blog.csdn.net/u013491262/article/details/52489701
https://www.cnblogs.com/huqianliang/p/5673701.html

2、Spring提供的异步线程池实现多线程任务

//1、配置
<!-- 异步任务线程池 -->
	<bean id="asyncTaskExecutor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
	   <property name="corePoolSize" value="1"></property>
	   <property name="maxPoolSize" value="100"></property>
	   <property name="queueCapacity" value="30"></property>
	</bean>
//2、使用
 @Autowired
    @Qualifier("asyncTaskExecutor")
    private AsyncTaskExecutor asyncTaskExecutor;

 Callable<String> callableTask= new Callable<String>() {
            @Override
            public String call() throws Exception {
                final String url = HttpUtils.getNewUrl(request, baseUrl);
                return httpClient.doOperation(url, headers);
            }
        };

        return new WebAsyncTask<String>(20000L, asyncTaskExecutor, callableTask);

引用参考：
https://www.cnblogs.com/leechenxiang/p/6365856.html
https://www.cnblogs.com/redcool/p/6426173.html
https://blog.csdn.net/lipc_/article/details/52786377
https://blog.csdn.net/qq827245563/article/details/78194438
https://blog.csdn.net/u012899746/article/details/72832120
http://blog.51cto.com/winters1224/1885666
https://my.oschina.net/kipeng/blog/1795538

3、Spring MVC的异步处理功能-- WebAsyncTask implements org.springframework.beans.factory.BeanFactoryAware
https://blog.csdn.net/u013755987/article/details/62424001
https://www.cnblogs.com/winner-0715/p/5759432.html
https://www.cnblogs.com/yangzhilong/p/3725128.html
https://blog.csdn.net/xiejx618/article/details/41285085
http://ydlmlh.iteye.com/blog/2062788
http://blueram.iteye.com/blog/1583117
//spring boot
http://baijiahao.baidu.com/s?id=1591282944823321584&wfr=spider&for=pc
http://www.spring4all.com/article/646

4、Spring mvc与Servlet-api
https://www.cnblogs.com/yy3b2007com/p/8196391.html
https://blog.csdn.net/sjyttkl/article/details/72757940
https://www.2cto.com/kf/201507/417681.html
--SpringMVC-DispatcherServlet工作流程及web.xml配置
https://www.cnblogs.com/yw0219/p/6084128.html
http://jinnianshilongnian.iteye.com/blog/1602617
https://www.cnblogs.com/yw0219/p/6086571.html
https://blog.csdn.net/u014034854/article/details/47108507


5、spring-web.jar里面的org.springframework.web.filter.DelegatingFilterProxy
https://blog.csdn.net/z69183787/article/details/23173093
https://blog.csdn.net/romantic_pk/article/details/53082201
https://blog.csdn.net/geloin/article/details/7441937
https://www.cnblogs.com/hiver/p/4615418.html

6、spring-data-redis
Spring data redis-StringRedisTemplate 用法
https://blog.csdn.net/fengzheku/article/details/49735785

7、使用bean
除了注解，老的方法:

import javax.servlet.ServletContext;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import java.text.MessageFormat;
@Override
public void init() throws ServletException {
	String logStr="controller.DemoServlet.init...";
	super.init();
	ServletContext servletContext = this.getServletContext();
	WebApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(servletContext);
	loginService = (LoginService) context.getBean("loginService");
	logger.info(MessageFormat.format(logStr+"loginService={0}", loginService));
}