Web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 配置Spring MVC -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
<b>注意:</b>
<b></b>
1、错误提示:org.springframework.web.servlet.DispatcherServlet noHandlerFound
警告: No mapping found for HTTP request with URI [/myspring/WEB-INF/jsp/hello.jsp] in DispatcherServlet with name 'springmvc'
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/*</url-pattern> <!---或者<url-pattern>/*.do</url-pattern>-->
</servlet-mapping>
这是一种错误的写法,可以改为:
<url-pattern>/</url-pattern>
2、默认情况:
<b>servlet-name</b><b>一般与项目名称一致</b>;若不写:
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-servlet.xml</param-value>
</init-param>
则默认是在<b>/WEB-INF/“servlet-name”-servlet.xml</b>
mvc-servlet.xml:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<!-- HandlerMapping -->
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping" >
<property name="mappings">
<props>
<prop key="hello.do">helloController</prop>
</props>
</property>
</bean>
<!-- ViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
<!-- 处理器 -->
<bean id="helloController" name="/hello" class="com.mzsx.web.controller.HelloWorldController"/>
</beans>
处理器:HelloWorldController.java
package com.mzsx.web.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
public class HelloWorldController implements Controller {
@Override
public ModelAndView handleRequest(HttpServletRequest req, HttpServletResponse resp) throws Exception {
//1、收集参数
//2、绑定参数到命令对象
//3、调用业务对象
//4、选择下一个页面
ModelAndView mv = new ModelAndView();
//添加模型数据 可以是任意的POJO对象
mv.addObject("message", "Hello World!");
//设置逻辑视图名,视图解析器会根据该名字解析到具体的视图页面
mv.setViewName("hello");
System.out.println("执行Controller---------");
return mv;
}
}
JSP: /WEB-INF/jsp/hello.jsp
<body>
取得数据:
${message }
</body>
本文转自 梦朝思夕 51CTO博客,原文链接:http://blog.51cto.com/qiangmzsx/1175071