maven项目整合SSM实现登录功能
1、在day01笔记中找创建maven项目的步骤
2、在pom.xml中导入整合ssm所需要的依赖
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<!--
Spring的jar包
SpringMVC的jar包
Mybatis的jar包
Spring整合mybatis的jar包
Spring整合SpringMVC的jar包
mysql的jar包
-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.16</version>
</dependency>
<!-- JSTL的jar包 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- lombok的jar包 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.18</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.2</version>
</dependency>
3、在pom.xml配置加载tomcat的插件
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
</plugin>
</plugins>
4、在web.xml中配置加载Spring和SpringMVC
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<!-- 当tomcat服务器一创建application作用域对象时，会自动加载Spring 框架 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<welcome-file-list>
<welcome-file>login.html</welcome-file>
</welcome-file-list>
<!-- 配置Spring和Springmvc -->
<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>*.do</url-pattern>
</servlet-mapping>
</web-app>
5、在 src/main/resources 目录下创建一个spring.xml
<?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: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.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/oa?useUnicode=true&characterEncoding=UTF-8" ></property>
<property name="username" value="root"></property>
<property name="password" value="123456"></property>
</bean>
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="datasource"></property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.ws.dao"></property>
<property name="sqlSessionFactory" ref="sqlSessionFactoryBean"></property>
</bean>
<context:component-scan base-package="com.ws"></context:component-scan>
</beans>
6、在在 src/main/resources 目录下创建一个springmvc.xml
<?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: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.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="com.hnjd.controller"/>
</beans>
7、实现登录功能
写前须知，在src目录下的main文件夹下自行创建
src/main/java:存放项目源代码的目录
src/main/resources:存放项目配置文件的目录
src/test/java:存放测试代码的目录
src/test/resources:存放测试配置文件的目录
src/main/webapp:存放静态资源的目录
1、必须完成以上步骤才能继续往下写
2、在登录页面login.html中，点击"点击登录"按钮，发送登录请求。
<!-- 约定大于配置 -->
<form action="login.do" method="post">
<div class="logmain">
<h1> </h1>
<div class="logdv">
<span class="logzi">账 号：</span>
<input name="ename" type="text" id="ename" class="ipt" />
</div>
<div class="logdv">
<span class="logzi">密 码：</span>
<input name="epass" type="password" id="epass" class="ipt" />
</div>
<div class="logdv">
<p class="logzi"> </p>
<a href="#" class="more">忘记密码</a>
<input name="" type="checkbox" value="" class="cex"/>记住密码
</div>
<div class="logdv" style="height:40px;">
<p class="logzi"> </p>
<input type="submit" class="btnbg" value="点击登录" />
</div>
<div>
<a href="#" class="more">注册</a>
</div>
</div>
</form>
2、写实体类，此处用到的lombok插件，详见lombok讲解
package com.hnjd.entity;
import java.sql.Date;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;
@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
public class Employee {
private Integer eid;
private String ename;
private String epass;
private String realname;
private Integer esex;
private Date entrydate;
private Date leavedate;
private Integer position;
private Integer sal;
private Integer estatus;
private Integer did;
private String dname;
}
2、写dao层接口
package com.hnjd.dao;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import com.hnjd.entity.Employee;
public interface EmployeeDao {
@Select("select employee.*,dname from employee,depart where employee.did=depart.did and ename=#{ename} and epass=#{epass}")
Employee queryAllEmp(@Param("ename")String ename,@Param("epass")String epass);
}
3、写service层类
package com.hnjd.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.hnjd.dao.EmployeeDao;
import com.hnjd.entity.Employee;
@Service
public class EmployeeService {
@Autowired
private EmployeeDao dao;
public Employee queryAllEmp(String ename,String epass) {
return dao.queryAllEmp(ename, epass);
}
}
4、写controller层类处理响应请求
package com.hnjd.controller;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.hnjd.entity.Employee;
import com.hnjd.service.EmployeeService;
@Controller
public class EmployeeController {
@Autowired
private EmployeeService service;
@RequestMapping("/login.do")
public String login(String ename,String epass,HttpSession session) {
Employee emp = service.queryAllEmp(ename, epass);
if(emp != null) {
session.setAttribute("emp", emp);
return "/index.jsp";
}else {
return "login.jsp";
}
}
}
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