原生SSM整合（实现登录）

• 1、导jar包
  

• 2、项目目录结构
  

• 3、配置 web.xml

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	version="3.1">
	
	
	<context-param>
		<param-name>contextConfigLocationparam-name>
		<param-value>classpath:applicationContext.xmlparam-value>
	context-param>
	
	
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
	listener>
	
	
	<servlet>
		<servlet-name>springmvcservlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
		<init-param>
			<param-name>contextConfigLocationparam-name>
			<param-value>classpath:springmvc.xmlparam-value>
		init-param>
		<load-on-startup>1load-on-startup>
	servlet>
	
	<servlet-mapping>
		<servlet-name>springmvcservlet-name>
		<url-pattern>/url-pattern>
	servlet-mapping>
	
	
	<filter>
		<filter-name>encodingfilter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
		<init-param>
			<param-name>encodingparam-name>
			<param-value>utf-8param-value>
		init-param>
	filter>
	
	<filter-mapping>
		<filter-name>encodingfilter-name>
		<url-pattern>/*url-pattern>
	filter-mapping>
	
web-app>

• 4、配置 applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd"
	default-autowire="byName">

	
	<context:component-scan
		base-package="com.mak.service.impl">context:component-scan>

	
	<context:property-placeholder
		location="classpath:db.properties" />

	
	<bean id="dataSource"
		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="${mysql.jdbc.driver}">property>
		<property name="url" value="${mysql.jdbc.url}">property>
		<property name="username" value="${mysql.jdbc.username}">property>
		<property name="password" value="${mysql.jdbc.password}">property>
	bean>

	
	<bean id="factory"
		class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="typeAliasesPackage" value="com.mak.pojo">property>
	bean>

	
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="sqlSessionFactoryBeanName" value="factory">property>
		<property name="basePackage" value="com.mak.mapper">property>
	bean>

	
	<bean id="txManage"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource">property>
	bean>

	
	<tx:advice id="txAdvice" transaction-manager="txManage">
		<tx:attributes>
			<tx:method name="ins*" />
			<tx:method name="del*" />
			<tx:method name="upd*" />
			<tx:method name="*" read-only="true" />
		tx:attributes>
	tx:advice>

	
	<aop:config>
		<aop:pointcut
			expression="execution(* com.amk.service.impl.*.*(..))" id="pointcut" />
		<aop:advisor advice-ref="txManage" pointcut-ref="pointcut" />
	aop:config>

beans>

• 5、配置 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">

	<!-- 配置注解扫描器 -->
	<context:component-scan
		base-package="com.mak.controller"></context:component-scan>

	<!-- 配置注解加载驱动 -->
	<mvc:annotation-driven></mvc:annotation-driven>

	<!-- 放行静态资源 -->
	<mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
	<mvc:resources location="/css/" mapping="/css/**"></mvc:resources>
	<mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
	<mvc:resources location="/files/" mapping="/files/**"></mvc:resources>

	<!-- 视图解析器 -->
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/page/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>

	<!-- 配置拦截器 -->
	<mvc:interceptors>
		<bean class="com.mak.interceptor.LoginInterceptor"></bean>
	</mvc:interceptors>

</beans>

• 6、配置 db.properties

mysql.jdbc.driver=com.mysql.cj.jdbc.Driver
mysql.jdbc.url=jdbc:mysql://localhost:3306/ssm?useSSL=false&serverTimezone=UTC
mysql.jdbc.username=root
mysql.jdbc.password=root

• 7、配置 log4j.properties

log4j.rootCategory=INFO, CONSOLE, LOGFILE

log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%m %n

log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=E:/my.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%m%n

• 8、数据库表

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for student
-- ----------------------------
DROP TABLE IF EXISTS `student`;
CREATE TABLE `student` (
  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '编号',
  `name` varchar(20) DEFAULT NULL COMMENT '姓名',
  `password` varchar(20) DEFAULT NULL COMMENT '密码',
  `age` int(11) DEFAULT NULL,
  `gendar` varchar(1) DEFAULT NULL,
  `idol` varchar(20) DEFAULT NULL COMMENT '名言',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8 COMMENT='学生';

• 9、创建实体

package com.mak.pojo;

public class Student {

	private int id;
	private String name;
	private String password;
	private int age;
	private String gendar;
	private String idol;
	// get/set..
}

• 10、创建 mapper 映射接口

package com.mak.mapper;

import java.util.List;

import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

import com.mak.pojo.Student;

public interface StudentMapper {
	
	@Select("select count(*) from student where name=#{name} and password=#{password}")
	int selByNamePwd(Student stu);
	
	@Select("select * from student")
	List<Student> selAll();
	
	@Insert("insert into student values(default,#{name},#{password},#{age}),#{gendar},#{idol}")
	int insStu(Student stu);
	
	@Delete("delete from student where id=#{0}")
	int delById(int id);
	
	@Update("update student set(name=#{name}, password=#{password}, age=#{age}, gendar=#{gendar}, idol=#{idol}) where id=#{id}")
	int updById(Student stu);

}

• 11、创建 service 接口

package com.mak.service;

import java.util.List;

import com.mak.pojo.Student;

public interface StudentService {
	
	int login(Student stu);
	
	List<Student> getAll();
	
	int addStu(Student stu);
	
	int delStu(int id);
	
	int updStu(Student stu);

}

• 12、创建 impl 对应实现类

package com.mak.service.impl;

import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.mak.mapper.StudentMapper;
import com.mak.pojo.Student;
import com.mak.service.StudentService;

@Service
public class StudentServiceImpl implements StudentService{
	
	@Resource
	private StudentMapper studentMapper;

	@Override
	public int login(Student stu) {
		return studentMapper.selByNamePwd(stu);
	}

	@Override
	public List<Student> getAll() {
		return studentMapper.selAll();
	}

	@Override
	public int addStu(Student stu) {
		return studentMapper.insStu(stu);
	}

	@Override
	public int delStu(int id) {
		return studentMapper.delById(id);
	}

	@Override
	public int updStu(Student stu) {
		return studentMapper.updById(stu);
	}

}

• 13、创建 拦截器类

package com.mak.interceptor;

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

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class LoginInterceptor implements HandlerInterceptor {

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
	}

	@Override
	public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
		if (arg0.getRequestURI().equals("/SSM-IDUS/login")) {
			return true;
		}else if (arg0.getRequestURI().equals("/SSM-IDUS/validcode")) {
			return true;
		} else {
			if (arg0.getSession().getAttribute("stu") != null) {
				return true;
			} else {
				arg1.sendRedirect("/index.jsp");
				return false;
			}
		}
	}
}

• 14、创建 学生类控制器

package com.mak.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

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

import com.mak.pojo.Student;
import com.mak.service.StudentService;

@Controller
public class StudentController {

	@Resource
	private StudentService studentServiceImpl;

	@RequestMapping("login")
	public String login(Student stu, String validcode, HttpServletRequest req, HttpServletResponse resp,
			HttpSession session) {
		String codeSession = req.getSession().getAttribute("validcode").toString();
		if (codeSession.equals(validcode)) {
			if (studentServiceImpl.login(stu) > 0) {
				session.removeAttribute("error");
				return "main";
			} else {
				session.setAttribute("error", "用户名密码不正确");
				return "redirect:/index.jsp";
			}
		} else {
			session.setAttribute("error", "验证码不正确");
			return "redirect:/index.jsp";
		}
	}
}

• 15、创建验证码控制器

package com.mak.controller;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class ValidcodeController {

	@RequestMapping("validcode")
	@ResponseBody
	public void getValidcode(HttpServletRequest req, HttpServletResponse resp, HttpSession session) throws IOException {
		BufferedImage image = new BufferedImage(200, 100, BufferedImage.TYPE_INT_RGB);
		Graphics2D gra = image.createGraphics();
		gra.setColor(Color.WHITE);
		gra.fillRect(0, 0, 200, 100);
		List<Integer> randList = new ArrayList<Integer>();
		Random random = new Random();
		for (int i = 0; i < 4; i++) {
			randList.add(random.nextInt(10));
		}
		gra.setFont(new Font("宋体", Font.ITALIC | Font.BOLD, 40));
		Color[] colors = new Color[] { Color.RED, Color.YELLOW, Color.BLUE, Color.GREEN, Color.PINK, Color.GRAY };
		for (int i = 0; i < randList.size(); i++) {
			gra.setColor(colors[random.nextInt(colors.length)]);
			gra.drawString(randList.get(i) + "", i * 40, 70 + (random.nextInt(21) - 10));
		}
		for (int i = 0; i < 2; i++) {
			gra.setColor(colors[random.nextInt(colors.length)]);
			gra.drawLine(0, random.nextInt(101), 200, random.nextInt(101));
		}
		ServletOutputStream outputStream = resp.getOutputStream();
		ImageIO.write(image, "jpg", outputStream);
		session = req.getSession();
		session.setAttribute("validcode", "" + randList.get(0) + randList.get(1) + randList.get(2) + randList.get(3));
	}
}

• 16、登录页

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录title>
<script type="text/javascript" src="/SSM-IDUS/js/jquery-3.4.1.min.js">script>
<script type="text/javascript">
$(function(){
	$("a").click(function(){
		$("img").attr("src","validcode?date="+new Date());
		return false;
	})
})
script>
head>
<body>
<span style="color: red;">${error }span>
<form action="login" method="post">
	用户名：<input type="text" name="name"/><br/>
	密码：<input type="password" name="password"/><br/>
	验证码:<input type="text" size="1" name="validcode"/><img src="validcode" width="80" height="40"/><a href="">看不清a><br/>
	<input type="submit" value="登录"/>
	<input type="reset" value="重置"/>
	form>
body>
html>

• 17、主页，主页没写

• 18、运行之后就是这样，用功能没页面，登录成功之后会跳转