基于Spring MVC接收并处理HTTP请求

    要开发一个接收HTTP请求的服务端，由于端口的限制，只能是依托于Tomcat等容器的应用。所以就想到用spring mvc接收http请求，并处理返回。
    1.新建maven的web应用，配置web.xml中spring的监听及spring mvc的servlet映射。

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

	<display-name>Archetype Created Web Application</display-name>

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			classpath*:spring/*.xml
		</param-value>
	</context-param>

	<!-- Filter 定义 -->
	<!-- Character Encoding filter -->
	<filter>
		<filter-name>encodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>


	<!-- Filter 映射 -->
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>


	<!-- spring容器启动监听器 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- Spring 刷新Introspector防止内存泄露 -->
	<listener>
		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
	</listener>

	<!-- session超时定义,单位为分钟 -->
	<session-config>
		<session-timeout>20</session-timeout>
	</session-config>

	<!-- spring mvc的servlet，加载WEB-INF/SpringSecurity-servlet.xml的配置文件，以启动Spring 
		MVC模块 -->
	<servlet>
		<servlet-name>mytest</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>2</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>mytest</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>

	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
	</welcome-file-list>
</web-app>

    2.配置相应的spring mvc映射文件。在web.xml中配置的mvc servlet名字为mytest，对应的映射文件就是mytest-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
                
   <!-- 对web包中的所有类进行扫描，以完成bean的创建和自动依赖注入功能      -->

    <context:component-scan base-package="com.ajita"/>
    
        <!-- 启动Spring mvc的注解功能，完成请求和注解POJO的映射 -->
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>               
                
          <!-- 对模型视图的名称的解析 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
     p:prefix="/WEB-INF/jsp/" p:suffix=".jsp"/>          
                
</beans>

    3.新建一个测试用的controller，因为用到了spring mvc的注解功能，要扫描对应的controller包，所以新建的SimpleController要在com.ajita包下面。

@Controller
public class SimpleController {

	@RequestMapping("/simpletest.do")
	public void test(Model model, HttpServletRequest request,
			@RequestParam(value = "level", required = false) String level,
			@RequestParam(value = "message", required = false) String message,
			HttpServletResponse response) {
		String ret="heihei";
		try {
			ServletOutputStream stream = response.getOutputStream();
			if(level!=null||message!=null)
				ret=level + message;
			stream.print(ret);
			stream.close();
		} catch (IOException ex) {
		}
	}
}

    4.发布，部署到Tomcat下就可以了。我自己测试环境的地址为：http://localhost:8080/HttpServerTest/simpletest.do?level=555&message=ddd ，访问就可以了。

    附件是demo代码，还包含了一个调用quartz进行简单任务调度的例子