SSM（spring+spring mvc+mybatis）框架搭建

版本：spring-4.3.3     mybatis-3.4.2     mybatis-spring-1.3.1      jdk-1.8     tomcat-8.0

一、数据库

创建ssmdemo1数据库，创建 category 表，并向表中添加几条数据。category 表只有两个属性：id 和 name 

二、创建web工程，引入jar包

所有jar包及工程结构如图所示

三、实体类 Category.java

package com.cxh.entity;/** * 对应数据库的实体类 */public class Category {private int id;private String name;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;}}

四、mapper 类 CategoryMapper.java (代替dao)层

package com.cxh.mapper;import java.util.List;import com.cxh.entity.Category;/** * 对应xml中的接口方法 */public interface CategoryMapper {public void add(Category category);public void delete(int id);public Category get(int id);public void update(Category category);public List<Category> list();public int count();}

五、同一个包下建立xml文件 Category.xml 

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><!-- namaspace必须写接口的完整类名 --><mapper namespace="com.cxh.mapper.CategoryMapper"><insert id="add" parameterType="com.cxh.entity.Category">insert into CATEGORY (name) values (#{name})</insert><delete id="delete" parameterType="int">delete from CATEGORY where id = #{_parameter}</delete><select id="get" parameterType="int" resultType="com.cxh.entity.Category">select id,name from CATEGORY where id = #{_parameter}</select><update id="update" parameterType="com.cxh.entity.Category">update CATEGORY set name = #{name} where id = #{id}</update><select id="list" resultType="com.cxh.entity.Category">select id,name from CATEGORY</select><select id="count" resultType="int">select count(*) from CATEGORY</select></mapper>

六、service 层 CategoryService.java 和实现类 CategoryServiceImpl.java

package com.cxh.service;import java.util.List;import com.cxh.entity.Category;public interface CategoryService {List<Category> list();}

package com.cxh.service;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.cxh.entity.Category;import com.cxh.mapper.CategoryMapper;@Servicepublic class CategoryServiceImpl implements CategoryService {@Autowiredprivate CategoryMapper categoryMapper;@Overridepublic List<Category> list() {return categoryMapper.list();}}

七、controller 层 CategoryController.java

package com.cxh.controller;import java.util.List;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;import com.cxh.entity.Category;import com.cxh.service.CategoryService;// 告诉spring mvc 这是一个控制器类@Controller// 访问地址映射@RequestMapping("")public class CategoryController {@AutowiredCategoryService categoryService;@RequestMapping("listCategory")public ModelAndView listCategory() {ModelAndView mav = new ModelAndView();List<Category> cs = categoryService.list();// 放入转发参数mav.addObject("cs", cs);// 放入jsp路径mav.setViewName("listCategory");return mav;}}

八、配置 web.xml 

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">  <display-name>SSMDemo1</display-name>    <!-- 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>/</url-pattern>  </servlet-mapping>        <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

九、src目录下新建 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: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">          <context:annotation-config/>     <context:component-scan base-package="com.cxh.service"/>          <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">     <property name="driverClassName">     <value>com.mysql.jdbc.Driver</value>     </property>     <property name="url">     <value>jdbc:mysql://localhost:3306/ssmdemo1?characterEncoding=UTF-8</value>     </property>     <property name="username">     <value>root</value>     </property>     <property name="password">     <value>root</value>     </property>     </bean>          <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">     <property name="typeAliasesPackage" value="com.cxh.entity"></property>     <property name="dataSource" ref="dataSource"></property>     <property name="mapperLocations" value="classpath:com/cxh/mapper/*.xml"></property>     </bean>          <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">     <property name="basePackage" value="com.cxh.mapper"></property>     </bean>          </beans>

十、src目录下新建 springmvc.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/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">             <context:annotation-config/>     <context:component-scan base-package="com.cxh.controller">     <context:include-filter type="annotation"      expression="org.springframework.stereotype.Controller"></context:include-filter>     </context:component-scan>          <mvc:annotation-driven></mvc:annotation-driven>    <mvc:default-servlet-handler></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>    <property name="prefix" value="/WEB-INF/jsp/"></property>    <property name="suffix" value=".jsp"></property>    </bean>              </beans>

十一、WEB-INF 下建个jsp文件夹，里面新建 listCategory.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8" import="java.util.*"%><%@ 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><table align='center' border='1' cellspacing='0'><tr><td>id</td><td>name</td></tr><c:forEach items="${cs}" var="c" varStatus="st"><tr><td>${c.id}</td><td>${c.name}</td></tr></c:forEach></table></body></html>

十二、 src目录下新建 log4j.properties

log4j.rootLogger=DEBUG,stdoutlog4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n#只输出有用信息log4j.logger.org.apache=DEBUG

部署在 tomcat 中，然后在浏览器中输入 

http://127.0.0.1:8080/SSMDemo1/listCategory