基于xml的springMVC请求与数据返回
首先我们构建一个请求和返回数据的一个实例。 <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<welcome-file-list>
<welcome-file>welcome.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/spring.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
默认情况下配置了DispatcherServlet转发器之后默认应该在WEB_INF下面创建[servlet-name]-servlet.xml这个文件来配置spring的视图解析和控制层的解析。也可以采用init-param参数contextConfigLocation的方式来灵活的配置spring的配置文件路径。我这里放到config包下面的spring-xml.如果不配置contextConfigLocation就要在WEB-INF下面创建springMVC-servlet.xml这个文件。 <?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">
<bean name = "/myHelloWorld" class="controller.HelloWorld" />
<bean id="ViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
InternalResourceViewResolve为视图层的解析器,需要配置控制器的名字name属性为请求的路径。上下文/name为请求的控制器的路径。class为控制器的实现类: public class HelloWorld implements Controller {
@Override
public ModelAndView handleRequest(HttpServletRequest arg0,HttpServletResponse arg1) throws Exception {
// TODO Auto-generated method stub
System.out.println("----hello world----");
String str = "this is my springMVC instance";
return new ModelAndView("/welcome","result",str);
}
}
这次我们先没从http请求里获得参数,主要演示如何返回页面和数据。 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>micro:${result}</h1>
</body>
</html>
直接采用EL表达式获得数据。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |