使用Maven搭建ssm

使用maven+ssm搭建简单的登录验证,有关maven 相关配置查看另一篇文章 eclipse中使用Maven搭建简单javaweb

这次开发顺序采用数据库->后台->前端

本人使用的mysql数据库新建一个名为ssmdemo数据库

使用Maven搭建ssm

建表sql语句

CREATE TABLE `users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
  `password` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

INSERT INTO `users` VALUES ('1', 'admin', 'admin');

项目结构如下

使用Maven搭建ssm

pom.xml

<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>com.dawan.maven</groupId>
  <artifactId>mavendemo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>  
  	
  	<dependencies>

    <!--1.数据库相关依赖-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.35</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.1</version>
    </dependency>

    <!--2.dao框架:MyBatis依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.3.0</version>
    </dependency>
    <!--mybatis自身实现的spring整合依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.3</version>
    </dependency>
	
	<!-- json转换框架 -->
	 <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.5.4</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope> 
    </dependency>

    <!--4:spring依赖-->
    <!--1)spring核心依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.1.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>4.1.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.1.7.RELEASE</version>
    </dependency>
    <!--2)spring dao层依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.1.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.1.7.RELEASE</version>
    </dependency>
    <!--3)springweb相关依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.1.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.1.7.RELEASE</version>
    </dependency>
    
  </dependencies>
  	
    <!-- 插件配置-->
    <build>
		<plugins>		
			<plugin>
				<groupId>org.eclipse.jetty</groupId>
			    <artifactId>jetty-maven-plugin</artifactId>
			    <version>9.4.2.v20170220</version>
			</plugin>
		</plugins>
	</build>
</project>

User.java 实体类

package com.dawan.ssmdemo.entity;

public class User{
	private int id;
	private String username;
	private String password;
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	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;
	}

	
}

UserDao.java 数据层

package com.dawan.ssmdemo.dao;

import org.apache.ibatis.annotations.Param;

import com.dawan.ssmdemo.entity.User;

public interface UserDao {
	/**
	 * 通过用户名查询用户
	 * @param username
	 * @return
	 */
	User userByName(@Param("username") String username);
	
}

UserService.java 业务层接口

package com.dawan.ssmdemo.service;

import com.dawan.ssmdemo.entity.User;

public interface UserService {
	/**
	 * 通过用户名查询用户
	 * @param username
	 * @return User
	 */
	User userByName(String username);
	
}

UserServiceImpl.java 实现类

package com.dawan.ssmdemo.serviceimpl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.dawan.ssmdemo.dao.UserDao;
import com.dawan.ssmdemo.entity.User;
import com.dawan.ssmdemo.service.UserService;

@Service
public class UserServiceImpl implements UserService {
	
	@Autowired
	private UserDao userDao;
	
	@Override
	public User userByName(String username) {
		User user = userDao.userByName(username);
		return user;
	}


}

UserController.java

package com.dwan.ssmdemo.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import com.dawan.ssmdemo.entity.User;
import com.dawan.ssmdemo.service.UserService;

@Component
@RequestMapping(value="/user")
public class UserController {
	
	@Autowired
	private UserService userService;
	
	/**
	 * 
	 * @param model
	 * @return
	 * @throws JsonProcessingException
	 * 查询所有文章
	 */
	@RequestMapping(value="/login")
	public String articleList(@RequestParam(value="username", required=true) String username,
			@RequestParam(value="password", required=true)  String password){
		System.out.println("username"+username);
		System.out.println("password"+password);
		User user = userService.userByName(username);
		if (user==null) {
			return "loginerr";
		}else if(user.getUsername().equals(password)) {
			System.out.println(user.getPassword()); 
			return "loginok";
		}
		return "loginerr";
	}

}

@RequestParam 获取前端传入参数 value绑定前端参数的名字 required设置参数是否能为空

jdbc.properties 数据库连接配置文件

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/ssmdemo?useUnicode=true&characterEncoding=utf-8
users=root
password=root

useUnicode=true&characterEncoding=utf-8参数解决中文乱码问题 ssmdemo为数据库名 users 和password为mysql用户名和密码

mybatis-config.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>
    <!--配置全局属性-->
    <settings>
        <!--使用jdbc的getGeneratekeys获取自增主键值-->
        <setting name="useGeneratedKeys" value="true"/>
        
	</settings>
	
</configuration>

这里只简单配置还有更多属性另行查询

UserDao.xml

<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dawan.ssmdemo.dao.UserDao">
    <!--目的:为dao接口方法提供sql语句配置
    即针对dao接口中的方法编写我们的sql语句-->
	
	<!-- 通过id查询文章 -->
    <select id="userByName" resultType="com.dawan.ssmdemo.entity.User" parameterType="String">
        SELECT id,username,password
        FROM users
        WHERE username=#{username}
    </select>

</mapper>

因为这里使用的mybatis接口编程各个sql语句id的值与对应的Dao层接口的方法名要一一对应

resultType 指定返回类型

parameterType指定参数类型

where 使用#{username} mybatis 解析#{username}为占位符,sql语句会预编译能防止sql注入

spring-dao.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: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/context 
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 配置整合mybatis过程 -->
    
    <!-- 	引入配置文件
    ignore-unresolvable就是过滤掉特殊占位符 -->
    <context:property-placeholder location="classpath*:configs/*.properties"
    ignore-unresolvable="true"/>

    <!--2.数据库连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!--配置连接池属性-->
        <property name="driverClass" value="${driver}" />

        <!-- 基本属性 url、user、password -->
        <property name="jdbcUrl" value="${url}" />
        <property name="user" value="${users}" />
        <property name="password" value="${password}" />

        <!--c3p0私有属性-->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!--关闭连接后不自动commit-->
        <property name="autoCommitOnClose" value="false"/>

        <!--获取连接超时时间-->
        <property name="checkoutTimeout" value="2000"/>
        <!--当获取连接失败重试次数-->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>

    <!--约定大于配置-->
    <!--３.配置SqlSessionFactory对象-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--往下才是mybatis和spring真正整合的配置-->
        <!--注入数据库连接池-->
        <property name="dataSource" ref="dataSource"/>
        <!--配置mybatis全局配置文件:mybatis-config.xml-->
        <property name="configLocation" value="classpath:configs/mybatis-config.xml"/>
        <!--扫描entity包,使用别名,多个用;隔开-->
        <property name="typeAliasesPackage" value="com.dawan.ssmdemo.entity"/>
        <!--扫描sql配置文件:mapper需要的xml文件-->
        <property name="mapperLocations" value="classpath:configs/mapper/*.xml"/>
    </bean>

    <!--４:配置扫描Dao接口包,动态实现DAO接口,注入到spring容器-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注入SqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 给出需要扫描的Dao接口-->
        <property name="basePackage" value="com.dawan.ssmdemo.dao"/>
    </bean>
    
</beans>

spring-service.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:context="http://www.springframework.org/schema/context" 
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx.xsd">

	<context:annotation-config />
	
	<!--扫描相关service 实现类 -->
	<context:component-scan base-package="com.dawan.ssmdemo.serviceimpl"/>

    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入数据库连接池-->
        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!--配置基于注解的声明式事务
    默认使用注解来管理事务行为-->
    <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

spring-web.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: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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--配置spring mvc-->
    <!--1,开启springmvc注解模式
    a.自动注册DefaultAnnotationHandlerMapping,AnnotationMethodHandlerAdapter
    b.默认提供一系列的功能:数据绑定，数字和日期的[email protected],@DateTimeFormat
    c:xml,json的默认读写支持-->
    <mvc:annotation-driven/>
	
	<!--2:扫描web相关的controller-->
    <context:component-scan base-package="com.dwan.ssmdemo.controller"/>
    <!--3.静态资源默认servlet配置-->
    <!--
        1).加入对静态资源处理：js,gif,png
        2).允许使用 "/" 做整体映射
    -->
    <mvc:resources mapping="/resources/**" location="/resources/" />

    <!--4：配置JSP 显示ViewResolver-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/jsps/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
	
	<!-- 配置ViewResolver 可以用多个ViewResolver. 
	使用order属性排序， InternalResourceViewResolver放到最后 -->
	<bean 
	class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
		<property name="order" value="1"/>
		<property name="mediaTypes">
			<map>
				<entry key="json" value="application/json"/>
				<entry key="xml" value="application/xml"/>
				<entry key="htm" value="application/html"/>
			</map>
		</property>
		
		<property name="defaultViews">
			<list>
				<!-- JSON View -->
				<bean 
				class="org.springframework.web.servlet.view.json.MappingJackson2JsonView">
				</bean>
			</list>
		</property>
	</bean>
	
</beans>

下面简单写前端和web.xml对ssm的配置

使用Maven搭建ssm

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" 
 id="WebApp_ID" version="3.0">
 
 	<!-- 编码过滤 -->
   <filter>
    <display-name>encodingFilter</display-name>
    <filter-name>encodingFilter</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>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <!-- Spring MVC核心 -->
  <display-name>Spring MVC</display-name>
  <servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:configs/spring/spring-*.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

index.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>Insert title here</title>
</head>
<body>
	<form action="/user/login" method="post">
	用户名<input type="text" name="username"/>
	密码<input type="password" name="password"/>
	<input type="submit"/>
	</form>
</body>
</html>

loginerr.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>Insert title here</title>
</head>
<body>
loginerr
</body>
</html>

loginok.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>Insert title here</title>
</head>
<body>
loginok
</body>
</html>

使用Maven搭建ssm

就此使用maven搭建ssm 实现简单的登录验证就好了

有不足之处请留言

使用Maven搭建ssm

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