目录
SSM
1 开发环境准备
IDE使用的是eclipse(虽然IDEA更好用,但eclipse可能在工作中更通用,还是得用熟才行),搭建SSM项目之前,需要配置好如下环境:
- JDK
- Tomcat
- Maven
- 帮助我们管理项目所需的jar包(ssm框架所需的jar包有20~30个)
以及eclipse的插件:
- Spring Tools
2 开始整合
2.1 创建项目
2.1.1 创建Maven Project
当你配置好Maven环境后,就可以在eclipse中直接创建Maven项目。
File->New->Other->【Maven Project】->不勾选Create a simple project
(图2.1.1 创建Maven Project)
点击Next->选择webapp
输入Group Id(组织名)与Artifact Id(项目名),然后它就会帮我们自动生成好一个包名。
点击Finish,这样就创建好了一个Maven工程,以下是目录结构。
可以看到项目现在是报错了,那是因为还没有引入所需要的jar包,接下来是要导入项目所需要的包。
2.1.2 导入jar包
Tomcat库支持
创建好项目后,先加入Tomact库,项目->右键菜单->BuildPath->Configure Build Path->Libraries->Add Library->选中Server Runtime->Next->选中你的Tomcat版本->Finish。
pom.xml文件
打开项目下的pom.xml文件(所有jar包依赖都写在这个文件中,进行统一管理),并将以下内容复制粘贴到\标签之后即可,使用Ctrl+S保存xml文件。
导入的依赖如下所示:
<properties>
<!-- spring版本号 -->
<spring.version>4.3.5.RELEASE</spring.version>
<!-- mybatis版本号 -->
<mybatis.version>3.2.7</mybatis.version>
<!-- log4j日志文件管理包版本 -->
<slf4j.version>1.7.7</slf4j.version>
<log4j.version>1.2.17</log4j.version>
<!-- junit测试包版本 -->
<junit.version>4.9</junit.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.0.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<!-- junit测试包 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<!-- scope表示"域" 表示开发的时候引入,发布的时候不会加载此包 -->
<scope>test</scope>
</dependency>
<!-- spring核心包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- springweb支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- oxm支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 事务支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- jdbc支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 与springmvc整合支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- aop支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.ow2.asm/asm -->
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm</artifactId>
<version>4.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<!-- 面向切面支持包 -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.13</version>
</dependency>
<!-- https://mvnrepository.com/artifact/cglib/cglib -->
<!-- spring中动态代理支持包 -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<!-- apache支持通用工具包 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/dom4j/dom4j -->
<!-- 文档解析工具 -->
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<!-- json数据处理 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
<!-- json注解支持 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp.jstl/jstl -->
<!-- 核心标签库支持 -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jstl-impl</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.taglibs/taglibs-standard-impl -->
<!-- 与jstl包合用 -->
<dependency>
<groupId>org.apache.taglibs</groupId>
<artifactId>taglibs-standard-impl</artifactId>
<version>1.2.5</version>
</dependency>
<!-- 上下文支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 测试支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis整合spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- 导入Mysql数据库链接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.36</version>
</dependency>
<!-- 导入c3p0工具包 <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId>
<version>0.9.1.2</version> </dependency> -->
<!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<!-- JSTL标签类 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日志文件管理包 -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- 格式化对象,方便输出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- 映入JSON -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<!-- 上传组件包 -->
<!-- 文件上传下载 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<!-- io流支持 -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<!-- 通用代码支持 -->
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
</dependencies>
<build>
<!-- 指定JRE版本为1.8 -->
<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>
</plugins>
</build>
(注意\标签下的JRE版本与你的Java环境是否一致,不一致需要进行修改)
写入了pom.xml文件后,我们还需要更新Maven项目,选中项目->右键菜单->Maven->Update Project->选择ok,此时eclips开始自动下载pom.xml中所指定的jar包。
2.2 配置文件
如果你是第一次整合ssm,我强烈建议你就按照以下的文件命名方式。
ssm框架的需要配置的文件如下:
- web.xml
- 配置spring
- 配置spring mvc
- 设置字符过滤器
- db.properties
- 设置数据库连接属性
- applicationContext
- 配置DataSource
- 配置sqlSessionFactory工厂
- 配置mapper接口
- 配置事务
- 设置注解扫描器
- springmvc-servlet
- 设置注解扫描器
- mvc注解驱动
- 视图解析器
- 文件上传解析器
- SqlMapConfig:
- 配置typeAliases
创建好如下的文件目录结构(包名、文件名可以自己进行修改),文件目录如下:
创建好文件目录之后,我们就可以开始写配置文件了,注意按照自己的目录结构修改每个xml文件中的包名。
2.2.1 web.xml
<?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"
version="3.0">
<display-name>Archetype Created Web Application</display-name>
<!--1 配置spring -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--2 配置spring mvc -->
<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-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--3 Spring MVC字符过滤器配置 -->
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
2.2.2 applicationContext.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:c="http://www.springframework.org/schema/c"
xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
xmlns:oxm="http://www.springframework.org/schema/oxm"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util"
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-4.3.xsd
http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.3.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-4.3.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">
<!--1 读取数据库配置属性文件 -->
<context:property-placeholder location="classpath:db.properties"/>
<!--2 配置DataSource -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!--3 配置工厂 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:/com/rhine/studySSM/mapper/*.xml"></property>
<property name="configLocation" value="classpath:SqlMapConfig.xml"></property>
</bean>
<!-- DAO(mapper)接口所在包名,Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.rhine.studySSM.mapper" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!--4 配置事务 -->
<!-- 事务管理器 -->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="save" propagation="REQUIRED"/>
<tx:method name="get" read-only="true"/>
<tx:method name="*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut expression="execution(* com.rhine.studySSM.service.impl.*.*(..))" id="pointcut"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
</aop:config>
<!--5 注解扫描器 -->
<context:component-scan base-package="com.rhine.studySSM.service"/>
</beans>
2.2.3 db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///testconn
jdbc.username=root
jdbc.password=abc123456
最好加上jdbc前缀,以防止命名冲突,使得spring创建DataSource的bean失败。
2.2.4 springmvc-servlet.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: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-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!-- 扫描controller注解、,多个包中间使用半角逗号分隔 -->
<context:component-scan base-package="com.rhine.studySSM.controller" />
<!-- 支持mvc注解驱动 -->
<mvc:annotation-driven enable-matrix-variables="true" />
<!-- Spring MVC不处理静态资源 -->
<mvc:default-servlet-handler />
<!-- 视图解析器 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<!-- 前缀 -->
<property name="prefix" value="/" />
<!-- 后缀 -->
<property name="suffix" value=".jsp" />
</bean>
<!--文件上传解析器 -->
<!--Spring MVC默认不能识别multipart格式的文件内容 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.support.StandardServletMultipartResolver">
</bean>
</beans>
2.2.5 SqlMapConfig.xml
<?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>
<typeAliases>
<package name="com.rhine.studySSM.domain"/>
</typeAliases>
</configuration>
3 Demo(用户登录)
以上,我们就完成了SSM(spring+spring mvc+mybatis)的整合,接下来,就以一个用户登录的例子,完成一次前端与后台的请求和响应。
为了之后查阅每一层中的代码格式方便,所以特意在文章中贴上了几乎所有的代码。如果你不想在文章中查看具体的代码细节,可直接在文末查看代码的下载地址。
3.1 创建user表
字段名 | 类型 | 主键 | Not NULL |
---|---|---|---|
id | int | √ | √ |
name | varchar | √ | |
password | varchar | √ |
sql脚本如下:
-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL,
`password` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('1', 'rhine', 'abc123');
INSERT INTO `user` VALUES ('2', 'cyy', 'abc123');
3.2 前端页面
所有的前端页面都防止在webapp文件夹中。
- login.jsp(登录页面)
- 登录成功则跳转到homepage/index.jsp页面中,并显示用户名
- 登录失败则跳转到fail.jsp页面
- fail.jsp(登录失败页面)
- index.jsp(首页)
文件目录结构如下所示:
3.2.1 login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录</title>
</head>
<body>
<h1>用户登录</h1>
<hr/>
<form action="${pageContext.request.contextPath }/user/login" method="POST">
用户名:<input type="text" name="name"><br>
密 码:<input type="password" name="password"><br>
<input type="submit" value="登录">
</form>
</body>
</html>
注意\标签中的name属性必须与User类中的字段名一一对应。
3.2.2 fail.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Index</title>
</head>
<body>
<h1>登录失败!请重新登录!</h1>
</body>
</html>
3.2.3 index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Index</title>
</head>
<body>
<h1>你好<c:out value="${sessionScope.user.name }"/>, 早上好!</h1>
</body>
</html>
通过session获取到用户名,并使用jstl标签打印在页面上。
3.3 后台代码
你如果学习过ssm框架,那你对后台代码的结构应该完全不陌生。
3.3.1 domain层
User.java
package com.rhine.studySSM.domain;
import java.io.Serializable;
@SuppressWarnings("serial")
public class User implements Serializable{
private Integer id;
private String name;
private String password;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
与数据库中的字段名一一对应,如果不同,则需要设置别名。
3.3.2 Dao(mapper)层
UserMaperr.java
package com.rhine.studySSM.mapper;
import org.springframework.stereotype.Repository;
import com.rhine.studySSM.domain.User;
@Repository
public interface UserMapper {
User userlogin(User user);
}
UserMapper.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="com.rhine.studySSM.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.rhine.studySSM.domain.User">
<id column="id" jdbcType="INTEGER" property="id"/>
<result column="name" jdbcType="VARCHAR" property="name"/>
<result column="passsword" jdbcType="VARCHAR" property="password"/>
</resultMap>
<select id="userlogin" parameterType="com.rhine.studySSM.domain.User" resultType="com.rhine.studySSM.domain.User">
SELECT * FROM user WHERE name=#{name} AND password=#{password}
</select>
</mapper>
3.3.3 service层
IUserService.java
package com.rhine.studySSM.service;
import com.rhine.studySSM.domain.User;
public interface IUserService {
User userlogin(User user);
}
UserService.java
package com.rhine.studySSM.service.impl;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.rhine.studySSM.domain.User;
import com.rhine.studySSM.mapper.UserMapper;
import com.rhine.studySSM.service.IUserService;
@Service
public class UserService implements IUserService{
@Resource
UserMapper userMapper;
@Override
public User userlogin(User user) {
return userMapper.userlogin(user);
}
}
3.3.4 controller层
UserController.java
package com.rhine.studySSM.controller;
import javax.servlet.http.HttpServletRequest;
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 com.rhine.studySSM.domain.User;
import com.rhine.studySSM.service.IUserService;
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
IUserService userService;
@RequestMapping("/login")
public String login(User user, Model model, HttpServletRequest req) {
HttpSession session = req.getSession();
if(user != null) {
User loginUser = userService.userlogin(user);
if(loginUser != null) {
System.out.println("登录成功");
session.setAttribute("user", loginUser);
return "homepage/index";
}else {
System.out.println("登录失败");
return "fail";
}
}
return "fail";
}
}
3.4 运行程序
在tomcat中运行程序,并根据数据库user表中的已有数据,进行登录,效果如下:
(早上开始写的,写完都中午了,还早上好…哈哈。写博客还是挺花时间的,不过后面回顾起来更省时间!)
4 项目下载地址
SSM就已经整合完成了,现在有了这个模板,就不需要每次都去重复的配置项目了,省去了很多事情。
gitee地址:https://gitee.com/Rhine/StudySSM