Spring Mvc-入门案例

朱雀 2022-06-12 05:57 277阅读 0赞

# 添加jar包 #

除了添加spring核心的那4个jar包和一个commons-logging.jar。

还需要添加

*  spring-web-3.2.0.RELEASE.jar
 *  spring-webmvc-3.2.0.RELEASE.jar
 *  jstl-1.2.jar

# 在web.xml里边配置前端控制器 #

<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:springmvc.xml</param-value>
            </init-param>
        </servlet>
    
        <servlet-mapping>
            <servlet-name>springmvc</servlet-name>
            <url-pattern>*.action</url-pattern>
        </servlet-mapping>

# 建立springmvc.xml文件 #

# 建立Test.java #

@Controller
    public class Test { 
    
        @RequestMapping(value="/test")
        public void test(HttpServletRequest request,HttpServletResponse response) throws Exception{
    
            String num=request.getParameter("num");
            request.setAttribute("item", num);
            request.getRequestDispatcher("/WEB-INF/jsp/test.jsp").forward(request, response);
    
        }
    
    }

# 建立test.jsp #

<%@ 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">
      </head>
    
      <body>
    
      ${item}
    
      </body>
    
    </html>

在浏览器访问

[http://localhost:8080/springmvctest/test.action?num=222][http_localhost_8080_springmvctest_test.action_num_222]

之后会在页面显示出222

[http_localhost_8080_springmvctest_test.action_num_222]: http://localhost:8080/springmvctest/test.action?num=222