SSM框架下实现登录注册的示例代码
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2022-06-06 16:07:19
基本配置：jdk1.8 tomcat 8 myeclipse先打好地基：spring配置文件 application.xml：
基本配置：jdk1.8 tomcat 8 myeclipse
先打好地基：
spring配置文件 application.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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemalocation=" http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- 通过注解，将service的生命周期纳入spring的管理 --> <context:annotation-config /> <!-- 通过注解，将service的生命周期纳入spring的管理 --> <context:component-scan base-package="service"></context:component-scan> <bean id="datasource" class="org.springframework.jdbc.datasource.drivermanagerdatasource"> <!-- 配置数据源 --> <property name="driverclassname"> <value>com.microsoft.sqlserver.jdbc.sqlserverdriver</value> </property> <property name="url"> <value>jdbc:sqlserver://localhost:1433;databasename=organic </value> </property> <property name="username"> <value>sa</value> </property> <property name="password"> <value>123456</value> </property> </bean> <!-- 扫描存放sql语句的shop.xml --> <bean id="sqlsession" class="org.mybatis.spring.sqlsessionfactorybean"> <property name="typealiasespackage" value="pojo"></property> <property name="datasource" ref="datasource"></property> <property name="mapperlocations" value="classpath:mapper/*.xml"></property> </bean> <!-- 扫描mapper，并将其生命周期纳入spring的管理 --> <bean class="org.mybatis.spring.mapper.mapperscannerconfigurer"> <property name="basepackage" value="mapper"></property> </bean> <!--4.配置事务管理器 --> <bean id="transactionmanager" class="org.springframework.jdbc.datasource.datasourcetransactionmanager"> <property name="datasource" ref="datasource"></property> </bean> <!--5.开启注解进行事务管理 transaction-manager：引用上面定义的事务管理器--> <tx:annotation-driven transaction-manager="transactionmanager"/> </beans>
springmvc配置文件 :
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemalocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<!-- 扫描controller,并将其生命周期纳入spring管理 -->
<context:component-scan base-package="controller">
<context:include-filter type="annotation" expression="org.springframework.stereotype.controller"/>
</context:component-scan>
<!-- 注解驱动，以使得访问路径与方法的匹配可以通过注解配置 -->
<mvc:annotation-driven/>
<!-- 静态页面，如html,css,js,images可以访问 -->
<mvc:default-servlet-handler />
<!-- 视图定位 -->
<bean
class="org.springframework.web.servlet.view.internalresourceviewresolver">
<property name="viewclass"
value="org.springframework.web.servlet.view.jstlview" />
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
web.xml 配置：
<?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"
xmlns:web="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_2_5.xsd" version="2.5">
<display-name>organicshopwithssm</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<!-- spring的配置文件-->
<context-param>
<param-name>contextconfiglocation</param-name>
<param-value>classpath:applicationcontext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.contextloaderlistener</listener-class>
</listener>
<!-- spring mvc核心：分发servlet -->
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class>
<!-- spring mvc的配置文件 -->
<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>mvc-dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!--配置由spring 提供的针对中文乱码的编码过滤器 -->
<!-- 编码过滤器 -->
<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>
开始第一层啦：
pojo包：userinfo 类
package pojo;
public class userinfo {
private string uid;
private string name;
private string email;
private string password;
public string getuid() {
return uid;
}
public void setuid(string uid) {
this.uid = uid;
}
public string getname() {
return name;
}
public void setname(string name) {
this.name = name;
}
public string getemail() {
return email;
}
public void setemail(string email) {
this.email = email;
}
public string getpassword() {
return password;
}
public void setpassword(string password) {
this.password = password;
}
@override
public string tostring() {
return "userinfo [uid=" + uid + ", name=" + name + ", email="
+ email + ", password=" + password + "]";
}
}
mapper层：（注意mybatis的xml文件也要放在mapper层）
shopmapping.java:
其中@param注解 是为了和xml中的查询参数进行绑定
package mapper;
import org.apache.ibatis.annotations.param;
import pojo.userinfo;
public interface shopmapper {
public void register(@param("name")string name,@param("email")string email,@param("password")string password);
public userinfo login(@param("email")string email,@param("password")string password);
public int finduser(@param("email")string email);
}
shop.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="mapper.shopmapper">
<select id="login" resulttype="userinfo" parametertype="string" >
select * from userinfo where email=#{email} and password=#{password}
</select>
<select id="register" resulttype="userinfo">
insert into userinfo(name,email,password) values (#{name},#{email},#{password})
</select>
<select id="finduser" resulttype="int">
select count(*) from userinfo where email=#{email}
</select>
</mapper>
service层：其实在写登陆的时候用了int类型，在想登陆也只要在数据库中查询表单输入的数据就行了，在mapper层的xml的文件中也写了 select count(*) 查询个数， 但是结果并不好，因为我要做的还有设置session。
package service;
import pojo.userinfo;
public interface shopservice {
//用户注册
void regist(string name,string email,string password);
//用户登录
userinfo login(string email,string password);
//验证
int finduser(string email);
}
service实现层：service.impl
package service.impl;
import mapper.shopmapper;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.stereotype.service;
import pojo.userinfo;
import service.shopservice;
@service
public class shopserviceimpl implements shopservice {
@autowired
public shopmapper sm;
@override
public void regist(string name, string email, string password) {
sm.register(name, email, password);
}
@override
public userinfo login(string email, string password) {
userinfo user=sm.login(email, password);
if(user!=null &&user.getpassword().equals(password)){
return user;
}
return null;
}
@override
public int finduser(string email) {
if(sm.finduser(email)==0){
return 0;
}
return 1;
}
}
controller层：
package controller;
import javax.servlet.http.httpsession;
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.requestmethod;
import pojo.userinfo;
import service.shopservice;
@controller
@requestmapping("")
public class shopcontroller {
@autowired
public shopservice ss;
@requestmapping(value = "registeruser", method = requestmethod.post)
public string registeruser(string name, string email, string password) {
int finduser = ss.finduser(email);
if (finduser == 0) {
ss.regist(name, email, password);
// system.out.println("可以注册");
return "login";
} else {
// system.out.println("注册失败");
return "register";
}
}
@requestmapping(value = "loginuser", method = requestmethod.post)
public string loginuser(userinfo user, httpsession session) {
// 调用service方法
user = ss.login(user.getemail(), user.getpassword());
if (user != null) {
session.setattribute("u".user);
return "index";
}
return "login";
}
@requestmapping("/outlogin")
public string outlogin(httpsession session){
session.invalidate();
return "index";
}
}
在controller层当中，关于注册的格式要求还需要自行搜索一下，主要讲一下的是登陆。在登陆的这个方法中传递了两个形式参数，userinfo是实体类，httpsssion是设置session的关键，后面通过session.setattribute()设置session，这也是在上文中提到的需要session的部分。在后来的注销中可以使用session.invalidate。
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