SSM练习——登录实现

 使用的技术：SSM框架，Jquery，Bootstrap，Jsp

运行效果：

项目结构：

相关jar包，在pom.xml中配置：

配置文件代码：

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">
    
    <!-- 1.启动Spring的容器 -->
   <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>
   
    <!--②负责启动spring容器的监听器，它将使用①处的上下文参数获得spring配置文件地址-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
       
    
    <!-- 2.SpringMVC的前端控制器  拦截所有请求 -->
    <servlet>  
        <servlet-name>dispatch</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <!-- 未指定SpringMVC的配置文件，所以在与web同级文件下建立一个与servlet-name同名+servlet的xml文件 -->
        <init-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>classpath:springmvc.xml</param-value>  
        </init-param> 
        <load-on-startup>1</load-on-startup>
    </servlet>  
    <servlet-mapping>  
            <servlet-name>dispatch</servlet-name>  
            <url-pattern>/</url-pattern>  
    </servlet-mapping>  
    
    <!-- 3.字符编码过滤器  放在所有过滤器前-->
    <filter>
        <filter-name>CharacterEncodingFilter</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>forceRequestEncoding</param-name>
                <param-value>true</param-value>
        </init-param>
        
        <init-param>
                <param-name>forceResponseEncoding</param-name>
                <param-value>true</param-value>
        </init-param>
        
    </filter>
    
    <filter-mapping>
            <filter-name>CharacterEncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <!-- 4.使用REST风格的URI -->
    <!-- 
          配置org.springframework.web.filter.HiddenHttpMethodFilter:可以把PUT请求转为DELETE或POST请求
   -->
   <filter>
             <filter-name>HiddenHttpMethodFilter</filter-name>
               <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
   
   </filter>
   <filter-mapping>
               <filter-name>HiddenHttpMethodFilter</filter-name>
               <!-- 过滤所有请求 -->
               <url-pattern>/*</url-pattern>
   </filter-mapping>
   
   
               <!-- 使页面ajax成功发put请求 
               在Spring MVC过滤器-HiddenHttpMethodFilter中我们提到，
               jsp或者说html中的form的method值只能为post或get，我们可以通过HiddenHttpMethodFilter获取put表单中的参数-值，
               而在Spring3.0中获取put表单的参数-值还有另一种方法，即使用HttpPutFormContentFilter过滤器。
               HttpPutFormContentFilter过滤器的作为就是获取put表单的值，并将之传递到Controller中标注了method为RequestMethod.put的方法中。
               -->
   <filter>
           <filter-name>HttpPutFormContentFilter</filter-name>
           <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
   </filter>
   
   <filter-mapping>
           <filter-name>HttpPutFormContentFilter</filter-name>
           <url-pattern>/*</url-pattern>
   </filter-mapping>
   
   
    </web-app>

spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"

       xmlns:tx="http://www.springframework.org/schema/tx"
 
         xmlns:aop="http://www.springframework.org/schema/aop"
 
       xmlns:mvc="http://www.springframework.org/schema/mvc"
 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 
       xmlns:context="http://www.springframework.org/schema/context" 
 
       xmlns:p="http://www.springframework.org/schema/p"
       
       
 
  xsi:schemaLocation="
 
              http://www.springframework.org/schema/beans    
 
                 http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
     
              http://www.springframework.org/schema/tx      
 
              http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
 
               http://www.springframework.org/schema/context
 
               http://www.springframework.org/schema/context/spring-context-4.3.xsd
               
               http://www.springframework.org/schema/mvc
               
               http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
 
               http://www.springframework.org/schema/aop
 
             http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
             
            <!--Spring的配置文件 ：主要配置和逻辑业务有关的-->
            
            <!-- 扫描包 -->
            <context:component-scan base-package="com.ssm">
                        <!-- 不扫描@Controller注解  -->
                    <context:exclude-filter type="annotation"  expression="org.springframework.stereotype.Controller" />
            
            </context:component-scan>
            
                        <!-- 引入外部配置文件 -->
            <context:property-placeholder  location="classpath:dbconfig.properties"/>
            
            
            <!-- ==================数据源，事务控制 ========================-->
            <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
                    <property name="jdbcUrl" value="${jdbc.url}"></property>
                    <property name="driverClass" value="${jdbc.driver}"></property>
                    <property name="user" value="${jdbc.username}"></property>
                    <property name="password" value="${jdbc.password}"></property>
            </bean>
            
            
            <!-- ========================配置和Mybatis的整合 =============================-->
            
            <bean id="sqlSessionFactory"  class="org.mybatis.spring.SqlSessionFactoryBean">
            
                                <!-- 指定Mybatis全局配置文件的位置 -->
            
            <!-- 加载mybatis的配置文件 -->
            <property name="configLocation" value="classpath:mybatis-config.xml"></property>
            <!-- 配置数据源 -->
            <property name="dataSource" ref="pooledDataSource"></property>
            
            <!-- 指定mybatis.mapper文件的位置 -->
            <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
            
            </bean>
            
            <!-- 配置扫描器，将mybatis接口的实现加入到ioc容器中 -->
                <bean  class="org.mybatis.spring.mapper.MapperScannerConfigurer">
                       
               <!-- 扫描所有dao接口的实现，加入到ioc容器 -->
                       <property name="basePackage" value="com.ssm.dao"></property>
       
               </bean>

                <!-- ==================事务控制==================== -->
                
                <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
                        <!-- 控制数据源 -->
                        <property name="dataSource" ref="pooledDataSource"></property>
                
                </bean>
            
            <!-- 开启使用xml配置形式的事务 -->
            <aop:config>
            <!-- 切入点表达式 -->
                <aop:pointcut expression="execution(* com.ssm.service.*.*(..))" id="txPoint"/>
                <!-- 配置事务增强 -->
                <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
            
            </aop:config>
            
            
            
            <!-- 配置事务增强，事务如何切入 -->
            <tx:advice id="txAdvice"  transaction-manager="transactionManager">
                <tx:attributes>
                    <!-- 所有方法都是事务方法 -->
                    <tx:method name="*"></tx:method>
                    
                        <!--以get开头的所有方法-->
                    <tx:method name="get*" read-only="true"></tx:method>
            
                </tx:attributes>
            </tx:advice>
            
            <!-- 
                    Spring配置文件的核心点：数据源，与mybatis的整合，事务控制
            
             -->
             
             
             <!-- 配置一个可以批量的执行sqlSession -->
             <bean  id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
                     <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
                     
                     <!-- 执行器类型，批量-batch -->
                    <constructor-arg name="executorType" value="BATCH"></constructor-arg>
            
             </bean>
             

</beans>

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 
         xmlns:aop="http://www.springframework.org/schema/aop"
 
       xmlns:mvc="http://www.springframework.org/schema/mvc"
 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 
       xmlns:context="http://www.springframework.org/schema/context" 
 
       xmlns:p="http://www.springframework.org/schema/p"
       
       xmlns:tx="http://www.springframework.org/schema/tx"
 
  xsi:schemaLocation="
 
              http://www.springframework.org/schema/beans    
 
                 http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
     
              http://www.springframework.org/schema/tx      
 
              http://www.springframework.org/schema/tx/spring-mvc-4.3.xsd
 
               http://www.springframework.org/schema/context
 
               http://www.springframework.org/schema/context/spring-context-4.3.xsd
               
               http://www.springframework.org/schema/mvc
               
               http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
 
               http://www.springframework.org/schema/aop
 
             http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
             
<!--SpringMVC的配置文件 ：主要包含网站跳转的控制，配置-->
        <context:component-scan base-package="com.ssm" use-default-filters="false">
        
        <!-- 扫描@Controller注解  不扫描用exclude -->
    <context:include-filter type="annotation"
        expression="org.springframework.stereotype.Controller" />
        
        </context:component-scan>
        
        <!-- 配置视图解析器  方便页面返回 -->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <!-- spring中加入jstl标签库 -->
           <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
                       <!-- 前缀 -->
                       <property name="prefix" value="/WEB-INF/views/"></property>
                       <!-- 后缀 -->
                       <property name="suffix" value=".jsp"></property>
           </bean>
           
           <!-- 两个标准配置 -->
           <!-- 将SpringMVC不能处理的请求交给tomcat -->
           <mvc:default-servlet-handler></mvc:default-servlet-handler>
           <!-- 能支持SpringMVC更高级的一些功能  JSR303的校验，快捷的ajax，映射动态请求-->
           <mvc:annotation-driven>
                   <!-- <mvc:message-converters>
                     <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
                      <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
                 </mvc:message-converters>
            -->
           </mvc:annotation-driven>
        
</beans>

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">
  
  <configuration>
                  <!-- 开启自动驼峰命名规则（camel case）映射，
                  即从经典数据库列名 A_COLUMN 到经典 Java 属性名 aColumn 的类似映射。 -->
          <settings>
              <setting name="mapUnderscoreToCamelCase" value="true" />
          </settings>
          
          <!-- 类型别名  自定义别名name为类所在的包路径-->
          <typeAliases>
              <package name="com.ssm.bean"></package>
          </typeAliases>
         
  </configuration>

dbconfig.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm
jdbc.username=root
jdbc.password=123

 其中修改了Mybatis逆向工程生成的相关文件

EmployeeMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.ssm.dao.EmployeeMapper">
  <resultMap id="BaseResultMap" type="com.ssm.bean.Employee">
    <id column="id" jdbcType="INTEGER" property="id" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="password" jdbcType="VARCHAR" property="password" />
    <result column="gender" jdbcType="CHAR" property="gender" />
    <result column="email" jdbcType="VARCHAR" property="email" />
  </resultMap>
  <sql id="zd">
          id,name,password,gender,email
  </sql>
  <!-- 登录验证 -->
  <select id="login" resultMap="BaseResultMap" parameterType="com.ssm.bean.Employee">
          select <include refid="zd"></include> from Employee
          <where>
                  name=#{name} and password=#{password}
          </where>
  
  </select>
   <!-- 注册 -->
  <insert id="insert" parameterType="com.ssm.bean.Employee">
          insert into Employee(<include refid="zd"></include>) 
          values(#{name},#{password},#{gender},#{email})
  
  </insert>
</mapper>

EmployeeMaper.java

package com.ssm.dao;

import com.ssm.bean.Employee;

public interface EmployeeMapper {
    
    public Employee login(Employee emp);
    
    String insert(Employee emp);
  
}

EmpService.java

package com.ssm.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.ssm.bean.Employee;
import com.ssm.dao.EmployeeMapper;

@Service
public class EmpService {
    
        @Autowired
        EmployeeMapper employeeMapper;

    public Employee getLogin(Employee emp) {
        
        Employee empinfo = employeeMapper.login(emp);
            
        return empinfo;
    }

}

EmpController.java

package com.ssm.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ssm.bean.Employee;
import com.ssm.service.EmpService;

@Controller
public class EmpController {
        @Autowired
        EmpService empService;
        
        @RequestMapping("/login")
        public String elogin(HttpServletRequest request){
            String loginname = request.getParameter("name");
            String loginpass = request.getParameter("password");
            Employee emp = new Employee();
            emp.setName(loginname);
            emp.setPassword(loginpass);
            
            Employee empo = empService.getLogin(emp);
                if(empo!=null){
                    return "success";
                }else{
                    return "error";
                }
            }
            
        
}

视图层显示页面

登录页面index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>登录页</title>
<link rel="stylesheet" type="text/css"
    href="./static/bootstrap-3.3.7-dist/css/bootstrap.min.css">
    <style>
        .form-horizontal{
                500px;
                height:300px;
                
        }
    </style>
</head>

<script src="./static/js/jquery-3.2.1.min.js" language="javascript"></script>
<script type="text/javascript">
    // 控制onsubmit提交的方法，方法名是vform()
        function form(){
            
            var name = $("#loginname").val();
            var password = $("#loginpass").val();
            //判断上面的变量，如果为空字符串不能提交
            if(name == ""){
                alert("请输入登录名！");
                return false;
            }
            if(password == ""){
                alert("请输入密码！");
                return false;
            }
            //除以上结果的可以提交，返回true
            return true;
        }
    </script>

<body>

    <h1>练习ssm框架之登录实现</h1>
    <hr>

    <form class="form-horizontal" action="login" method="post"
        onsubmit="return form()">
        <div class="form-group">
            <label class="col-sm-2 control-label">用户名</label>
            <div class="col-sm-10">
                <input type="text" class="form-control" id="loginname"
                     name="name">
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-2 control-label">密码</label>
            <div class="col-sm-10">
                <input type="password" class="form-control" id="loginpass"
                     name="password">
            </div>
        </div>
        <div class="form-group">
            <div class="col-sm-offset-2 col-sm-10">
                <button type="submit" class="btn btn-default">登录</button>
            </div>
        </div>
    </form>
</body>
</html>

登录成功或失败跳转页面

<body>
    welcome to start studying SSM<br>
  </body>

<body>
    帐号密码错误，<a href="index.jsp">返回</a> <br>
  </body>

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