本篇内容主要讲解“SSM登录注册功能如何实现”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“SSM登录注册功能如何实现”吧!
Myeclipse 2017 CI 1
MySQL 5.7
Tomcat 8.5
在数据库中新建user表
有几个主要的配置文件，先了解下每个配置文件的作用。
1. web.xml:当服务启动时首先会去加载web.xml这个资源文件，里面包括了对前端控制器、乱码问题等配置。
2.applicatonContext.xml : 一般配置数据源，事物，注解等。
在这里我使用的是applicatonContext-*.xml的形式将DAO层、Service层、Transaction层分开配置，这样便于管理
分别为applicatonContext-dao.xml、applicatonContext-service.xml、applicatonContext-transaction.xml
分开配置时，需要在web.xml中配置上下文位置
3.springmvc.xml: 里面配置的是控制层的 ，如视图解析器静态资源， mvc 文件上传，拦截器等。
4.SqlMapConfig.xml: 该配置文件为MyBatis的配置文件，里面无需配置，一切交给spring管理，但是xml文件基础配置要有。
持久层相关配置文件 applicationContext-dao.xml
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
<!-- 配置 读取properties文件 jdbc.properties -->
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 配置 数据源 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 配置SqlSessionFactory -->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 设置MyBatis核心配置文件 -->
<property name="configLocation" value="classpath:SqlMapConfig.xml" />
<!-- 设置数据源 -->
<property name="dataSource" ref="dataSource" />
<!-- 别名包扫描 -->
<property name="typeAliasesPackage" value="com.zhu.pojo" />
</bean>
<!-- 配置Mapper扫描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 设置Mapper扫描包 -->
<property name="basePackage" value="com.zhu.mapper" />
</bean></beans>applicationContext-service.xml
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 配置@Service类的包扫描 --> <context:component-scan base-package="com.zhu.service"/></beans>
applicationContext-trans.xml
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 数据源 --> <property name="dataSource" ref="dataSource" /> </bean> <!-- 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 传播行为 --> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="create*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> <tx:method name="select*" propagation="SUPPORTS" read-only="true" /> <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> <tx:method name="query*" propagation="SUPPORTS" read-only="true" /> </tx:attributes> </tx:advice> <!-- 切面 --> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.zhu.service.*.*(..))" /> </aop:config></beans>
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:p="http://www.springframework.org/schema/p" 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-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <!-- 配置Controller扫描 --> <context:component-scan base-package="com.zhu.controller" /> <!-- 配置注解驱动 --> <mvc:annotation-driven /> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 前缀 --> <property name="prefix" value="/WEB-INF/jsp/" /> <!-- 后缀 --> <property name="suffix" value=".jsp" /> </bean></beans>
SqlMapConfig.xml这个无需设置，但是必须要有
<?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> </configuration>
配置文件写好了，接下来就开始写代码
先从Mapper开始写：
1.先写一个接口UserMapper.java
package com.zhu.mapper;
import com.zhu.pojo.User;
public interface UserMapper { //登录验证
User logincheck(User user); //注册
void register(User user);
}2.在写一个UserMapper.xml与之相关联
<?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.zhu.mapper.UserMapper">
<select id="logincheck" parameterType="com.zhu.pojo.User" resultType="com.zhu.pojo.User">
select *
from user <where>
<if test="name != null and name != ''">
and `name` = #{name} </if>
<if test="pwd != null and pwd != ''">
AND `pwd` = #{pwd} </if>
</where>
</select>
<insert id="register" parameterType="com.zhu.pojo.User">
insert into
user(name,pwd)
value(#{name},#{pwd}) </insert></mapper>3.接下来就是Service层了，先写一个接口：UserService.java,内容与UserMapper.java一样
4.然后写一个类实现UserService.java，代码比较简单，不做过多解释，大家不要忘了要给给它标记@Service
package com.zhu.service;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;
import com.zhu.mapper.UserMapper;import com.zhu.pojo.User;@Servicepublic class UserServiceImpl implements UserService { //属性注入
@Autowired
private UserMapper usermapper;
@Override
public User logincheck(User user) {
User u = usermapper.logincheck(user); return u;
}
@Override
public void register(User user) {
usermapper.register(user);
}
}5.最后就是Controller层了，Controller层的代码主要是调用Service层实现的方法，实现一些操作，并与前端进行交互。
UserController.java
package com.zhu.controller;
import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import com.zhu.pojo.User;import com.zhu.service.UserService;
@Controllerpublic class UserController { @Autowired
private UserService userService; //转向登录页面
@RequestMapping("tologin") public String tologin(){ return "login";
} //登录验证
@RequestMapping("login") public String login(@RequestParam("username") String username,
@RequestParam("password") String password,Model model){
User user = new User();
user.setName(username);
user.setPwd(password); if(userService.logincheck(user) != null){
model.addAttribute("username",username); return "index";
} else{
model.addAttribute("error","账号或密码错误"); return "login";
}
} //转向注册页面
@RequestMapping("toregister") public String toregister(){ return "register";
} //注册
@RequestMapping("register") public String register(@RequestParam("username") String username,
@RequestParam("password") String password){
User user = new User();
user.setName(username);
user.setPwd(password);
userService.register(user);
return "login";
}
}到此，相信大家对“SSM登录注册功能如何实现”有了更深的了解，不妨来实际操作一番吧！这里是亿速云网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
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