用idea搭建一个简单的SSM的Demo

1.新建一个maven  web app项目

结构如下

resources的资源文件如下

applicationContext.xml 的配置

<?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"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="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-4.3.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!-- @Component, @Repository, @Service, @Controller, @Autowired, @Resources -->
    <!-- 用注解进行开发 -->
    <context:annotation-config></context:annotation-config>
    <!-- 注解扫描包 -->
    <context:component-scan base-package="com.demo">
        <!-- 这里不加载Controller的bean -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 1. 数据源 -->
    <!-- 读取db.properties文件. 读取到数据库信息 -->
    <context:property-placeholder location="classpath:db.properties"/>
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <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>

    <!-- 2.  创建sqlSessionFactory ==> mybatis核心配置文件的读取 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!-- 3.扫描mybatis的mapper接口路径 -->
    <!-- 这个bean可以把我们的mapper接口直接扫描到. 直接把接口扫描完. 注册到spring的bean中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
         <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
         <!-- 会在提供的base包下寻找interface .根据interface的名字. 将首字母小写生成这个接口所对应的bean -->
         <property name="basePackage" value="com.demo.mapper"></property>
     </bean>

    <!-- 4.事务处理 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <tx:advice id="txManager" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="query*" read-only="true"/>
            <tx:method name="search*" read-only="true"/>
            <tx:method name="select*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*"  isolation="DEFAULT" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <aop:config>
        <aop:pointcut expression="execution(* com.demo.service.*.*.*(..))" id="cut"/>
        <aop:advisor advice-ref="txManager" pointcut-ref="cut"/>
    </aop:config>

    <!-- 用注解处理事务
    <tx:annotation-driven transaction-manager="transactionManager"/>
 -->
</beans>

applicationContext-mvc.xml 的配置

<?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:p="http://www.springframework.org/schema/p"
    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">

    <!-- 开启注解. 扫描 -->
    <context:annotation-config></context:annotation-config>
    <context:component-scan base-package="com.demo.controller"></context:component-scan>

    <!-- 过滤掉js, jpg, png, css, 静态文件 -->
    <mvc:default-servlet-handler/>

    <!-- 开启mvc -->
    <mvc:annotation-driven />

    <!-- 地址解析器  -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>

db.properties 记得修改用户名和密码

# 219.168.23.10 线上服务器地址
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=#####
jdbc.password=#####

log4j.properties

# Global logging configuration
log4j.rootLogger=DEBUG,Console

# Console output...

log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.org.apache=INFO

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><!-- mybatis的核心配置  -->
    <!-- mybatis的运行配置 -->
    <settings>
        <!-- 开启二级缓存 -->
        <setting name="cacheEnabled" value="true"/>
        <setting name="lazyLoadingEnabled" value="true"/>
        <!-- 如果这个属性是true,那么你的类中, 任何一个方法被执行.都要去加载属性,
            这个时候懒加载是没有效果的.
         -->
        <setting name="aggressiveLazyLoading" value="false"/>
    </settings>

</configuration>

StuMapper.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.demo.mapper.StuMapper" >
    <resultMap id="BaseResultMap" type="com.demo.pojo.Stu" >
        <id column="id" property="id" jdbcType="INTEGER" />
        <result column="name" property="name" jdbcType="VARCHAR" />
        <result column="age" property="age" jdbcType="INTEGER" />
    </resultMap>
    <sql id="Base_Column_List" >
    id, name, age
  </sql>
    <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
        select
        <include refid="Base_Column_List" />
        from student
        where id = #{id,jdbcType=INTEGER}
    </select>
    <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from student
    where id = #{id,jdbcType=INTEGER}
  </delete>
    <insert id="insert" parameterType="com.demo.pojo.Stu" >
    insert into student (id, name, age
      )
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER}
      )
  </insert>
    <insert id="insertSelective" parameterType="com.demo.pojo.Stu" >
        insert into student
        <trim prefix="(" suffix=")" suffixOverrides="," >
            <if test="id != null" >
                id,
            </if>
            <if test="name != null" >
                name,
            </if>
            <if test="age != null" >
                age,
            </if>
        </trim>
        <trim prefix="values (" suffix=")" suffixOverrides="," >
            <if test="id != null" >
                #{id,jdbcType=INTEGER},
            </if>
            <if test="name != null" >
                #{name,jdbcType=VARCHAR},
            </if>
            <if test="age != null" >
                #{age,jdbcType=INTEGER},
            </if>
        </trim>
    </insert>
    <update id="updateByPrimaryKeySelective" parameterType="com.demo.pojo.Stu" >
        update student
        <set >
            <if test="name != null" >
                name = #{name,jdbcType=VARCHAR},
            </if>
            <if test="age != null" >
                age = #{age,jdbcType=INTEGER},
            </if>
        </set>
        where id = #{id,jdbcType=INTEGER}
    </update>
    <update id="updateByPrimaryKey" parameterType="com.demo.pojo.Stu" >
    update student
    set name = #{name,jdbcType=VARCHAR},
      age = #{age,jdbcType=INTEGER}
    where id = #{id,jdbcType=INTEGER}
  </update>

    <select id="getAllStu" resultMap="BaseResultMap">

        select  * from  student

    </select>
</mapper>

以上resources的配置文件完毕

2.下面是web.xml的配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <!-- 读取除了mvc外的配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:/applicationContext.xml</param-value>
    </context-param>

    <!-- 整个web容器的动向由这个监听器进行监听. 这个监听器可以监听项目的启动. 从而直接加载核心配置文件 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

  <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>

  <servlet>
      <servlet-name>springMVC</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <!-- 给出spring的路径 -->
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:applicationContext-mvc.xml</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup><!-- 当web容器加载的时候, 初始化spring -->
  </servlet>

  <servlet-mapping>
      <servlet-name>springMVC</servlet-name>
      <url-pattern>/</url-pattern><!-- 所有 -->
  </servlet-mapping>

  <listener>
      <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  </listener>

</web-app>

3.下面是pom.xml的依赖

<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>cn.offcn.maven</groupId>
  <artifactId>ssm-01</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>

  <dependencies>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.12</version>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
            <version>1.1.1</version>
            <scope>provided</scope>
        </dependency>
        <!--实现slf4j接口并整合-->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.1.1</version>
            <scope>provided</scope>
        </dependency>

        <!--druid==>阿里巴巴数据库连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.25</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>1.3.2</version>
        </dependency>

        <!--3.Servlet web相关依赖-->
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>

        </dependency>
        <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>4.3.14.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.3.14.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.14.RELEASE</version>
        </dependency>
        <!--2)spring dao层依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.14.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.14.RELEASE</version>
        </dependency>
        <!--3)springweb相关依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.3.14.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.14.RELEASE</version>
        </dependency>
        <!--4)spring test相关依赖-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.14.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
            <scope>runtime</scope>
        </dependency>

        <!--Aop要导入的包-->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.9</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.json/json -->
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20170516</version>
        </dependency>
    </dependencies>
   <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

4.jsp页面

list.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/core"  prefix="c"%>
<!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>
<a href="/stu/goToAdd">增加学生</a>

    <table border="1" width="100%">
        <tr>
            <td>id</td>
            <td>name</td>
            <td>age</td>
            <td colspan="2">操作</td>
        </tr>
        <c:forEach items="${stuList }" var="stu">
        <tr>
            <td>${stu.id }</td>
            <td>${stu.name }</td>
            <td>${stu.age }</td>
            <td><a href="/stu/goToUpdate?id=${stu.id }">修改</a></td>
            <td><a href="/stu/del?id=${stu.id }">删除</a></td>
        </tr>
        </c:forEach>
    </table>
</body>
</html>

add.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core"  prefix="c"%>
<!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="/stu/add"  >

    名字:<input id="name" type="text" name="name">
    年龄:<input id="age" type="text" name="age">
    <input type="submit" value="提交">

</form>

</body>
</html>

update.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core"  prefix="c"%>
<!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="/stu/update"  >

   id:<input type="text" name="id" value="${stu.id}" readonly="readonly">
    名字:<input id="name" type="text" name="name" value="${stu.name}">
    年龄:<input id="age" type="text" name="age" value="${stu.age}">
    <input type="submit" value="提交" >

</form>

</body>
</html>

index.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/6/9
  Time: 15:50
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
欢迎光临
<a href="/stu/list">点击跳转到列表页面</a>
</body>
</html>

5.以下是src的文件

contrlloer

package com.demo.controller;

import java.util.List;

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.demo.pojo.Stu;
import com.demo.service.StuService;

@Controller
@RequestMapping("stu")
public class StuController {

    @Autowired
    private StuService stuService;

    @RequestMapping("list")
    public String list(Model model) {

        List<Stu> stuList = stuService.getAllStu();
        model.addAttribute("stuList", stuList);
        return "list";

    }

    @RequestMapping("goToAdd")
    public String goToAdd() {

        return "add";

    }

    @RequestMapping("add")
    public String add(Stu stu) {

        stuService.insert(stu);
        return "redirect:list";

    }

    @RequestMapping("goToUpdate")
    public String goToUpdate(Integer id, Model model) {

        Stu stu = stuService.selectByPrimaryKey(id);
        model.addAttribute("stu", stu);
        return "update";

    }

    @RequestMapping("update")
    public String update(Stu stu) {
        stuService.updateByPrimaryKeySelective(stu);
        return "redirect:list";
    }

    @RequestMapping("del")
    public String del(Integer id){

        stuService.deleteByPrimaryKey(id);
        return "redirect:list";
    }

}

service接口

package com.demo.service;

import java.util.List;

import com.demo.pojo.Stu;

public interface StuService {
    public List<Stu> getAllStu();

    void insert(Stu stu);

    Stu selectByPrimaryKey(Integer id);

    void updateByPrimaryKeySelective(Stu stu);

    void deleteByPrimaryKey(Integer id);
}

service接口实现类

package com.demo.service.imple;

import java.util.List;

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

import com.demo.mapper.StuMapper;
import com.demo.pojo.Stu;
import com.demo.service.StuService;

@Service
public class StuServiceImple implements StuService {

    @Autowired
    private StuMapper stuMapper;

    @Override
    public List<Stu> getAllStu() {
        return stuMapper.getAllStu();
    }

    @Override
    public void insert(Stu stu) {
        stuMapper.insert(stu);
    }

    @Override
    public Stu selectByPrimaryKey(Integer id) {
        return stuMapper.selectByPrimaryKey(id);
    }

    @Override
    public void updateByPrimaryKeySelective(Stu stu) {
        stuMapper.updateByPrimaryKeySelective(stu);
    }

    @Override
    public void deleteByPrimaryKey(Integer id) {
        stuMapper.deleteByPrimaryKey(id);
    }

}

mapper(或者Dao)

package com.demo.mapper;

import java.util.List;

import com.demo.pojo.Stu;

public interface StuMapper {

    public List<Stu> getAllStu();

    public Stu getById(int id);

    int deleteByPrimaryKey(Integer id);

    int insert(Stu record);

    int insertSelective(Stu record);

    Stu selectByPrimaryKey(Integer id);

    int updateByPrimaryKeySelective(Stu record);

    int updateByPrimaryKey(Stu record);
}

pojo实体类

package com.demo.pojo;

public class Stu {
    private int id;
    private String name;
    private int age;

    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }

}

以上就是一个学生信息的小Demo 大家可以尝试下哦