补一下blog

1、配置maven

指向阿里的镜像并且导入ssm框架所需的依赖

<mirror><id>nexus-aliyun</id><mirrorOf>central</mirrorOf><name>Nexus aliyun</name><url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>

2、配置porn.xml

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>org.example</groupId><artifactId>ssm</artifactId><version>1.0-SNAPSHOT</version><packaging>war</packaging><name>ssm Maven Webapp</name><!-- FIXME change it to the project's website --><url>http://www.example.com</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><!-- spring版本号 --><spring.version>5.0.2.RELEASE</spring.version><!-- mybatis版本号 --><mybatis.version>3.2.6</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><c3p0.version>0.9.5.2</c3p0.version><taglibs.version>1.1.2</taglibs.version></properties><dependencies><!-- spring核心包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-oxm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${spring.version}</version></dependency><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/spring包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.2.2</version></dependency><!-- 导入java ee jar 包 --><dependency><groupId>javax</groupId><artifactId>javaee-api</artifactId><version>7.0</version></dependency><!-- 导入Mysql数据库链接jar包 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.30</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>${log4j.version}</version></dependency><!-- 数据连接池 --><dependency><groupId>com.mchange</groupId><artifactId>c3p0</artifactId><version>${c3p0.version}</version></dependency><dependency><groupId>taglibs</groupId><artifactId>standard</artifactId><version>${taglibs.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><!-- 导入servlet-api/jsp --><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.1.0</version><scope>provided</scope></dependency><!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api --><dependency><groupId>javax.servlet.jsp</groupId><artifactId>javax.servlet.jsp-api</artifactId><version>2.3.1</version><scope>provided</scope></dependency></dependencies><build><finalName>ssm</finalName><pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --><plugins><plugin><artifactId>maven-clean-plugin</artifactId><version>3.1.0</version></plugin><!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --><plugin><artifactId>maven-resources-plugin</artifactId><version>3.0.2</version></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>3.8.0</version></plugin><plugin><artifactId>maven-surefire-plugin</artifactId><version>2.22.1</version></plugin><plugin><artifactId>maven-war-plugin</artifactId><version>3.2.2</version></plugin><plugin><artifactId>maven-install-plugin</artifactId><version>2.5.2</version></plugin><plugin><artifactId>maven-deploy-plugin</artifactId><version>2.8.2</version></plugin></plugins></pluginManagement></build>
</project>

3、resoureces文件夹下配置数据库信息

db.properties文件配置

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/db?useSSL=true&characterEncoding=utf-8&serverTimezone=UTC
jdbc.username=   //自己的账号密码
jdbc.password=

4、resoureces文件夹下配置视图、控制器映射信息等

spring-mvc.xml文件配置

<?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"xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.3.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.3.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-4.3.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.3.xsd"><!-- 1.注解扫描位置--><context:component-scan base-package="com.aroad.controller" /><!-- 2.配置映射处理和适配器--><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/><!-- 3.视图的解析器--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/pages/" /><property name="suffix" value=".jsp" /></bean>
</beans>

5、resoureces文件夹下接口扫描包、数据库连接、映射文件加载等配置

applicationContext.xml配置

<?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:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.3.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-4.3.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.3.xsd"><!-- 1.配置数据库相关参数properties的属性：${url} --><context:property-placeholder location="classpath:db.properties"/><!-- 2.配置数据源 --><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="driverClass" value="${jdbc.driver}"/><property name="jdbcUrl" value="${jdbc.url}"/><property name="user" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/><property name="maxPoolSize" value="30"/><property name="minPoolSize" value="2"/></bean><!-- 3.配置SqlSessionFactory对象 --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 注入数据库连接池 --><property name="dataSource" ref="dataSource"/><!-- 扫描bean包 使用别名 --><property name="typeAliasesPackage" value="com.aroad.bean"></property><!--配置加载映射文件 UserMapper.xml--><property name="mapperLocations" value="classpath:mapper/*.xml"/></bean><!-- 自动生成dao,mapper--><!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!-- 给出需要扫描Dao接口包 --><property name="basePackage" value="com.aroad.dao"/><!-- 注入sqlSessionFactory --><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/></bean><!--自动扫描--><context:component-scan base-package="com.aroad"/><!-- 配置事务--><!-- 5.配置事务管理器 --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource"/></bean><!-- 6.开启事务注解--><tx:annotation-driven></tx:annotation-driven></beans>

ssm框架搭建完毕可以写一个简单的接口试一试了

先写一个数据库中的bean

package com.aroad.bean;public class User {public User() {}public User(int id, String username, String password) {this.userid = id;this.username = username;this.password = password;}public User(String username, String password) {this.username = username;this.password = password;}private int userid;private String username;private String password;public int getUserid() {return userid;}public void setUserid(int userid) {this.userid = userid;}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;}@Overridepublic String toString() {return "User{" +"id=" + userid +", username='" + username + '\'' +", password='" + password + '\'' +'}';}
}

再写一个userDao ，用于通过username查找数据库中的user

package com.aroad.dao;import com.aroad.bean.User;public interface UserDao {User findUserByUserName(String username);
}

而后在resoures下写相应的mapper.xml映射文件

<?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.aroad.dao.UserDao" ><select id="findUserByUserName" parameterType="String" resultType="com.aroad.bean.User">select * from user where username=#{username}</select></mapper>

编写Service

public interface UserService {boolean login(String username,String password);
}

实现Service，完成后台对数据的操作

package com.aroad.service.impl;import com.aroad.bean.User;
import com.aroad.dao.UserDao;
import com.aroad.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class UserServiceImpl implements UserService {@Autowiredprivate UserDao userDao;@Overridepublic boolean login(String username, String password) {User user = userDao.findUserByUserName(username);return user != null && user.getPassword().equals(password);}
}

编写控制器

package com.aroad.controller;import com.aroad.bean.User;
import com.aroad.service.UserService;
import com.aroad.service.impl.UserServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;@Controller
@RequestMapping("/user")
public class UserController {@Autowiredprivate UserService userService;@RequestMapping("/login.do")public ModelAndView login(User user){boolean flag = userService.login(user.getUsername(),user.getPassword());ModelAndView modelAndView = new ModelAndView();if (flag) modelAndView.setViewName("../ok");else modelAndView.setViewName("../failure");return modelAndView;}
}

jsp方面关键代码

<form action="/user/login.do" method="post">username:<input name="username" type="text">password:<input name="password" type="password"><input type="submit" value="login">
</form>

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