springmvc web应用程序 java

搭建普通 springmvc

1.如图建立相关文件

建立在WEB-INF下比较安全，不能直接访问资源。

2.建立Controller控制器，如图

3.需要导入的jar包

commons-logging-1.1.jar

4.web.xml 核心代码添加

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
    <welcome-file-list>
        <welcome-file>MyJsp.jsp</welcome-file>
    </welcome-file-list>
    <!-- 以下是核心代码 -->
    <servlet>
        <servlet-name>springMVCTemplet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/springmvc-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springMVCTemplet</servlet-name>
        <url-pattern>*.jpg</url-pattern>
        <url-pattern>*.js</url-pattern>
        <url-pattern>*.css</url-pattern>
        <url-pattern>/Views/*</url-pattern>
    </servlet-mapping>
</web-app>

5.springmvc-servlet.xml 核心代码添加

<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.1.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
    <!-- 静态资源映射-->
    <mvc:annotation-driven />
    <mvc:resources mapping="/Images/**" location="/WEB-INF/Images/" />
    <mvc:resources mapping="/Css/**" location="/WEB-INF/Css/" />
    <mvc:resources mapping="/Script/**" location="/WEB-INF/Script/" />
    <!-- 对模型视图名称的解析,在视图之后加上jsp后缀-->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/Views" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 告诉 spring 在 com.Controller 包下应用了 spring 注解   -->
    <context:component-scan base-package="com.Controller" />
</beans> 

6.MyJspController.java Controller文件的编写

package com.Controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping("/test")
public class MyJspController {

    public MyJspController(){
        System.out.println("create MyJspController");
    }

    @RequestMapping("/login")
    public ModelAndView index(HttpServletRequest request, HttpServletResponse response){
        String name=request.getParameter("name");
        System.out.println("页面加载:"+name);
        ModelAndView view=new ModelAndView("/Login/login");
        view.addObject("welcome","this is a url");
        return view;
    }
}// end

7.login.jsp 页面的编写

在页面中加上这句话<h3>your welcome param: ${welcome}</h3>

8.显示结果

url：http://localhost:8888/WebXiangMu/Views/test/login?name=hc

问题：

之前有个问题一直在纠结：/WEB-INF/下的文件怎么也访问不到

一直报这个错误：

  WARN [http-8888-exec-1] (DispatcherServlet.java:1120) - No mapping found for HTTP request with URI [/WebXiangMu/WEB-INF/Views/MyJsp.jsp] in DispatcherServlet with name 'springMVCTemplet' 

查了半天最后是发现@RequestMapping("/login.h") 文件的后缀不能用jsp 这样就会报错，原因未查。