spring mvc+spring + hibernate 整合

Posted 2020-06-18

    前面我们已整合了spring + hibernate，并建立了个用户的增加的实例，通过了单元测试，能正常增加数据。今天我们就来集成spring mvc以便建立web界面来输入数据并提交，后台再保存入库。关于spring mvc的一些基础理论及使用方法，网上有很多的资料，我这里就不多说了，下面我们进入实战。

    因为我们项目会用到很多的图片、js代码、css样式文件等。我们在webapp目录下建立个static目录，统一对这些文件进行管理

    一：web.xml配置

        它提供了我们应用程序的配置设定。内容包括有：

         .站台的名称和说明

         .针对环境参数(Context)做初始化工作

         .Servlet的名称和映射

         .Session的设定

         .Tag library的对映

         .JSP网页设定

         .Mime Type处理

         .错误处理

         .利用JDNI取得站台资源

        要了解web.xml的设定值，必须了解它的schema,从web.xml中知道它的schema是由Sum Microsystems公司定制的，我们可以通过http://java.sun.com/xml/ns/j2ee/web-mapp_2_4.xsd网页来详细了    解。这里我只说说我们集成spring mvc需要的基本配置

    1.配置应用的基本信息

    <!-- 工程显示名称 -->
    <display-name>ExtDesktop</display-name>
    <!-- 工程的描述性说明 -->
    <description>Ext Js Desktop Web APP 学习</description>
    <!-- 工程的图标定义 -->
    <icon>
        <small-icon>/images/small.gif</small-icon>
        <large-icon>/images/large.gir</large-icon>
    </icon>

    2.ServletContext(上下文)

    <!-- 配置ServletContext(上下文) -->
    <!-- 配置文件路径 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
        classpath*:applicationContext*.xml
    </param-value>
    </context-param>
    <!-- webApp的根，用来区分部署到同一tomcat的不同应用程序 -->
    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>extdesktop.webapp.root</param-value>
    </context-param>

    3.配置springmvc拦截器

    <!-- 配置springmvc 拦截器 -->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    4.完整的web.xml配置

<?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_3_0.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="extdesktop"
    version="3.0"
    metadata-complete="true">
    <!-- 工程显示名称 -->
    <display-name>ExtDesktop</display-name>
    <!-- 工程的描述性说明 -->
    <description>Ext Js Desktop Web APP 学习</description>
    <!-- 工程的图标定义 -->
    <icon>
        <small-icon>/images/small.gif</small-icon>
        <large-icon>/images/large.gir</large-icon>
    </icon>
    <!-- 配置ServletContext(上下文) -->
    <!-- 配置文件路径 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
        classpath*:spring*.xml
    </param-value>
    </context-param>
    <!-- webApp的根，用来区分部署到同一tomcat的不同应用程序 -->
    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>extdesktop.webapp.root</param-value>
    </context-param>
    <!-- Spring配置 -->
    <listener> 
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
    </listener> 
    <!-- 配置springmvc 拦截器 -->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!-- 字符过滤 -->
    <filter>
        <filter-name>characterEncoding</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-mapping>
        <filter-name>characterEncoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>    
   <!-- 默认跳转到根目录下的页面，在这里为login.jsp -->  
    <welcome-file-list>  
        <welcome-file>login.jsp</welcome-file>  
    </welcome-file-list>     
</web-app>

    二：springmv-servlet.xml配置

        springmvc-servlet这个名字是因为上面web.xml中<servlet-name>标签配的值为springmvc（<servlet-name>spring</servlet-name>），再加上“-servlet”后缀而形成的springmvc-servlet.xml文件名，如果改为其它名称(如spring)，对应的文件名则为【名称】-servlet.xml(如spring-servlet)。

<?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:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
    <!-- 自动扫描的包名 -->
    <context:component-scan base-package="com.ympcsoft" />
    <!-- 默认的注解映射的支持 -->
    <mvc:annotation-driven />
    <!-- 配置静态文件访问 -->
    <mvc:resources location="/static/" mapping="/static/**"/>
    <!-- 视图解释类 -->
    <bean
        id="viewResolver"
        class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <property
            name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property
            name="prefix"
            value="/WEB-INF/view/" />
        <property
            name="suffix"
            value=".jsp" />
    </bean>
</beans>

三：login.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">
<title>Insert title here</title>
</head>
<body>
<form action="login/login" method="post">
    用户名:<input type="text" name="userName"/>
     密码:<input type="text" name="userPwd"/><br>
     <input type="radio" name="userCh" value="portal" checked>经典界面
     <input type="radio" name="userCh" value="desktop">类桌面界面
    <input type="submit" value="提交"/>
</form>
    
</body>
</html>

四：loginController.java

package com.ympcsoft.extdesktop.controller.login;
import javax.annotation.Resource;
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;
import com.ympcsoft.extdesktop.domain.sys.SysUser;
import com.ympcsoft.extdesktop.service.sys.SysUserService;
@Controller
@RequestMapping("/login")
public class LoginController{
    
    @Resource
    private SysUserService sysUserService;
    
    @RequestMapping("/login")
    public ModelAndView login(SysUser sysUserModel, HttpServletRequest request, HttpServletResponse response) throws Exception {
        
        String userName = sysUserModel.getUserName();
        String userPwd = sysUserModel.getUserPwd();
        String userCh = sysUserModel.getUserCh();
        
        ModelAndView mav = null;
        
        System.out.println("user:"+userName + " userPwd:" + userPwd + " userCh:" + userCh);
        
        //sysUser持久化到数据库中
        SysUser sysUser = new SysUser();
        sysUser.setUserName(sysUserModel.getUserName());
        sysUser.setUserPwd(sysUserModel.getUserPwd());
        sysUser.setUserCh(sysUserModel.getUserCh());
        sysUserService.addUser(sysUser);
        
        if ("portal".equals(userCh)){
            mav = new ModelAndView("/desktop/portal");
            mav.addObject("常规界面", " hello  "+userName);
        } else {
            mav = new ModelAndView("/desktop/desktop");
            mav.addObject("desktop界面", " hello  "+userName);
        }
        
        return mav;
    }
    
}

    

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