文章目录
本案例主要围绕SSM登录注册案例,说明SSM的jar包用途以及SSM的整个运行流程,帮助你了解关于SSM的整体架构知识,希望对你有所帮助。
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链接:https://gitee.com/fanggaolei/learning-notes-warehouse
1.0 材料准备
1.1 数据库
1.2 工程准备
1.3Tomcat准备
2.0 SSM环境配置
2.1jar包配置及用途说明
1.常用Spring jar包说明
<!-- Spring相关 -->
<dependency>
<!-- Spring框架基本核心 -->
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<dependency>
<!-- Spring框架IOC -->
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<dependency>
<!-- Spring面向切面编程 AOP -->
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<!-- 为Spring 核心提供了大量扩展,使用Spring ApplicationContext特性时所需的全部类 -->
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<dependency>
<!-- Spring表达式解析 -->
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.2.4.RELEASE</version
</dependency>
<dependency>
<!-- Spring-Jdbc 事物控制-->
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<!-- Spring-test用于测试 -->
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<!-- mybatis-spring整合包,这样就可以通过spring配置bean的方式进行mybatis配置了,
不然需要单独使用mybatis的配置-->
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
2.Mybatis Jar包说明
<dependencies>
<!-- Mybatis核心 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
3.0 SpringMvc jar包说明
<dependency>
<!--springMVC核心jar包-->
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<!--引入servlet依赖-->
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<!--jstl标签库,开源jsp标签库-->
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
4.0其他Jar包
<dependency>
<!--数据库依赖-->
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<!--单元测试依赖-->
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<!--更强的单元测试依赖-->
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>RELEASE</version>
<scope>compile</scope>
</dependency>
<dependency>
<!--基于Java平台的一套数据处理工具,很方便完成 Java对象 和 Json对象的转换-->
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.8</version>
</dependency>
<dependency>
<!--c3p0数据库连接池-->
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
2.2项目pom.xml配置
<dependencies>
<!--1.数据库依赖-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!--2.引入mybatis依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
<!-- 返回json字符串的支持-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.8</version>
</dependency>
<!--3.引入单元测试依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!--4.引入日志依赖-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!--5.mybais相关依赖 用于自动逆向工程-->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<!--6.springMVC相关依赖 SpringMVC核心包 间接导入了启动mvc框架的所有依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!--7.引入相关servlet依赖-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 8.Spring-Jdbc 事物控制-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 9.Spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 10.Spring面向切面编程 AOP -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 11.mybatis整合spring的适配包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>RELEASE</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<!--c3p0数据库连接池-->
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
</dependencies>
2.3项目Web.xml及SSM配置文件
接下来我们配置以下3个内容
1.web.xml
当服务启动时首先加载web.xml中的资源文件,如前端控制器,字符编码过滤器等。
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
version="2.5">
<!-- 配置 Spring MVC 的前端控制器 -->
<welcome-file-list>
<welcome-file>log.jsp</welcome-file>
</welcome-file-list>
<!--配置文件加载-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:application-*.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<!--servlet-name 名称-->
<servlet-name>DispatcherServlet</servlet-name>
<!--路径 class-->
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<!-- 配置初始化参数,用于读取 Spring MVC 的配置文件 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<!-- 应用加载时创建 优先级别 1最高级别-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern> <!--路径 什么情况下会开启-->
</servlet-mapping>
<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>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
2.application-dao.xml:
用于编写Mybatis的设置,此配置文件是为了将对数据库的操作转换为mapper映射器注入到spring中。
<?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>
<settings>
<setting name="mapUnderscoreToCamelCase" value="true"/><!--开启驼峰命名规则-->
</settings>
<typeAliases>
<package name="com.fang.log_reg.bean"/> <!--配置别名-->
</typeAliases>
</configuration>
3.application-service.xml:
用于配置Spring的IOC和AOP以及数据库连接等。
<!-- 1.扫描器,不扫控制器-->
<context:component-scan base-package="com.fang.ssmhe">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<context:component-scan base-package="com.fang.ssmhe.service"/>
<!-- Spring的配置文件,这里主要配置和业务逻辑有关的 -->
<!-- =================== 数据源,事务控制,xxx ================ -->
<context:property-placeholder/>
<bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql://117.33.150.3:3306/ssm_crud?3useUnicode=true?characterEncoding=utf8"/>
<property name="user" value="root"/>
<property name="password" value="fgl123"/>
</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 -->
<property name="configLocation" value="classpath:mybatis.xml"/>
<property name="dataSource" ref="pooledDataSource"/>
<!-- 指定mybatis,mapper文件的位置 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</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容器中 -->
<property name="basePackage" value="com.fang.ssmhe.dao"/>
</bean>
<!-- 配置一个可以执行批量的sqlSession -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/>
<constructor-arg name="executorType" value="BATCH"/>
</bean>
<!-- ===============事务控制的配置 ================ -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 控制住数据源 -->
<property name="dataSource" ref="pooledDataSource"/>
</bean>
<!-- 开启基于注解的事务,使用xml配置形式的事务(必要主要的都是使用配置式) -->
<aop:config>
<!-- 切入点表达式 -->
<aop:pointcut expression="execution(* com.fang.ssmhe.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="*"/>
<!-- 以get开始的所有方法 -->
<tx:method name="get*" read-only="true"/>
</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) -->
</beans>
4.spring-mvc.xml
用于配置视图解析和注解驱动
<?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: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.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.fang.log_reg" use-default-filters="false">
<!-- 只扫描控制器-->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 两个标准配置 -->
<!-- 将springmvc不能处理的请求交给tomcat -->
<mvc:default-servlet-handler/>
<!-- 能支持springmvc更高级的一些功能,JSR303校验,快捷的ajax...映射动态请求 -->
<mvc:annotation-driven/>
</beans>
如果你已经完成上述内容,那么恭喜你,你已经完成了全部的配置环节
3.0项目业务配置-四个目录
3.1bean目录User
package com.fang.log_reg.bean;
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public User() {
}
public User(String username, String password) {
this.username = username;
this.password = password;
}
@Override
public String toString() {
return "User{" +
"username='" + username + '\'' +
", password='" + password + '\'' +
'}';
}
}
3.2controller目录UserController
package com.fang.log_reg.controller;
import com.fang.log_reg.service.UserService;
import com.fang.log_reg.bean.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class UserController {
@Autowired //为我们注入一个定义好的 bean
private UserService userService;
@RequestMapping("/golog")
public String log(User user, Model model) {
User u = userService.findOne(user);
model.addAttribute("user", u);
if (u != null) {
return "logok";
} else
return "logno";
}
@RequestMapping("/goreg")
public String reg(User user) {
User u = userService.checkReg(user.getUsername());
if (u == null) {
userService.addOne(user);
return "regok";
}
return "regno";
}
@RequestMapping("/reg")
public String reg(String string){
return "reg";
}
}
3.3dao目录UserMapper接口
package com.fang.log_reg.dao;
import com.fang.log_reg.bean.User;
public interface UserMapper {
User findOne(User user);
//注册时的重名校验
User checkReg(String username);
//用户注册
int addOne(User user);
}
3.4service目录UserService
package com.fang.log_reg.service;
import com.fang.log_reg.bean.User;
import com.fang.log_reg.dao.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserService {
@Autowired
private UserMapper userMapper;
public User findOne(User user) {
return userMapper.findOne(user);
}
public int addOne(User user) {
return userMapper.addOne(user);
}
public User checkReg(String username) {
return userMapper.checkReg(username);
}
}
3.4配置mapper文件
<?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.fang.log_reg.dao.UserMapper">
<!--该方法为注册方法-->
<select id="findOne" parameterType="User" resultType="User">
SELECT * FROM user where username=#{username} and password=#{password}
</select>
<insert id="addOne" parameterType="User" >
insert into user (username,password) values(#{username},#{password})
</insert>
<select id="checkReg" resultType="User">
select * from user where username=#{username}
</select>
</mapper>
4.0配置6个界面
4.1log.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户登录</title>
<style type="text/css">
div {
width: 300px;
height: 200px;
margin-left: auto;
margin-right: auto;
}
</style>
</head>
<body>
<div>
<form action="golog" method="post">
<table border="1">
<tr>
<td>用户名:</td>
<td><input type="text" name="username"></td>
</tr>
<tr>
<td>密 码:</td>
<td><input type="password" name="password"></td>
</tr>
<tr>
<td colspan="2" style="text-align: center;"><input
type="submit" value="登录"></td>
</tr>
<tr>
<td colspan="2" style="text-align: center;"><a href="http://localhost:8081/login_registration_SSM_war/reg">还没有账号?点此注册</a></td>
</tr>
</table>
</form>
</div>
</body>
</html>
4.2logno与logok
<!-- logno.jsp -->
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>用户名或者密码错误</h1>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body >
<h1>如果你能看见我,说明你成功了</h1>
<hr>
您的用户名是:${user.username}<br>
您的密码是:${user.password}<br>
</body>
</html>
4.3reg与regno、regok
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户注册</title>
<style type="text/css">
div {
width: 300px;
height: 200px;
margin-left: auto;
margin-right: auto;
}
</style>
</head>
<body>
<div>
<form action="goreg" method="post">
<table border="1">
<tr>
<td>用户名:</td>
<td><input type="text" name="username" ></td>
</tr>
<tr>
<td>密 码:</td>
<td><input type="password" name="password" ></td>
</tr>
<tr>
<td colspan="2" style="text-align: center;"><input type="submit" value="注册"></td>
</tr>
</table>
</form>
</div>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>该用户名已被注册</h1>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body >
<h1>注册成功如果你能看见我,说明你成功了</h1><br>
<a href="http://localhost:8081/login_registration_SSM_war/">点此返回登录界面</a>
</body>
</html>
恭喜你完成项目配置!!!