Spring+MVC+Mybatis（SSM）整合

其他 2018-07-06 12:04:46 阅读次数: 0

本例实现一个最基本的SSM框架整合，服务器读取数据库并显示到网页

基于Spring4.3.14+Spring MVC4.3.14+Mybatis3.4.6+MySQL5.1.46+JDK1.8+Maven4.0

首先创建数据库

create database ssm;

创建表

CREATE TABLE category_ (
  id int(11) NOT NULL AUTO_INCREMENT,
  name varchar(30) ,
  PRIMARY KEY (id)
);

插入数据

insert into category_ values(null,"category1");
insert into category_ values(null,"category2");
insert into category_ values(null,"category3");
insert into category_ values(null,"category4");
insert into category_ values(null,"category5");

创建Maven WebApp Project，在pom.xml引入所需依赖

		<!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>4.3.14.RELEASE</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.springframework/spring-context-support -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>4.3.14.RELEASE</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.apache.taglibs/taglibs-standard-impl -->
		<dependency>
			<groupId>org.apache.taglibs</groupId>
			<artifactId>taglibs-standard-impl</artifactId>
			<version>1.2.5</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>4.0.1</version>
			<scope>provided</scope>
		</dependency>

		<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.46</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>4.3.14.RELEASE</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.3.2</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.4.6</version>
		</dependency>

创建持久类Category

package pojo;

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;
	}

	@Override
	public String toString() {
		return "Category [id=" + id + ", name=" + name + "]";
	}

}

创建接口CategoryMapper，提供操作CRUD方法

package mapper;

import java.util.List;

import pojo.Category;

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();

}

创建CategoryMapper.xml文件映射上面的接口实现具体sql操作

<?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="mapper.CategoryMapper">

	<insert id="add" parameterType="Category">
		insert into category_ ( name )
		values (#{name})
	</insert>

	<delete id="delete" parameterType="Category">
		delete from category_ where
		id= #{id}
	</delete>

	<select id="get" parameterType="_int" resultType="Category">
		select * from
		category_ where id= #{id}
	</select>

	<update id="update" parameterType="Category">
		update category_ set
		name=#{name} where id=#{id}
	</update>
	<select id="list" resultType="category">
		select * from category_
	</select>
</mapper>

创建接口CategoryService提供业务层的操作方法

package service;

import java.util.List;

import pojo.Category;

public interface CategoryService {

	List<Category> list();

}

创建业务层接口实现类CategoryServiceImpl实现CRUD操作

package service;

import java.util.List;

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

import mapper.CategoryMapper;
import pojo.Category;

//表明这是一个服务组件
@Service
public class CategoryServiceImpl implements CategoryService {

	//自动注入
	@Autowired
	CategoryMapper categoryMapper;

	public List<Category> list() {
		// TODO Auto-generated method stub
		return categoryMapper.list();
	}

}

创建控制器类CategoryController绑定模型视图

package 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 pojo.Category;
import service.CategoryService;

//表明这是一个控制器组件
@Controller
@RequestMapping("")
public class CategoryController {

	@Autowired
	CategoryService categoryService;

	//路径映射
	@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;
	}

}

修改web.xml配置Spring MVC

<?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" xmlns:web="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_2_5.xsd"
	version="2.5">

	<!-- 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>

</web-app>

创建applicationContext.xml配置各项组件

<?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">

	<!-- 开启注解配置，将Service的生命周期纳入Spring的管理 -->
	<context:annotation-config />
	<context:component-scan base-package="service*" />

	<!-- 数据源 -->
	<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/ssm?characterEncoding=utf8&useSSL=true
			</value>
		</property>
		<property name="username">
			<value>root</value>
		</property>
		<property name="password">
			<value>admin</value>
		</property>
	</bean>

	<!-- 提供SessionFactory组件 -->
	<bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 配置全局别名，简化代码 -->
		<property name="typeAliasesPackage" value="pojo" />
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 扫描Mapper，并将其生命周期纳入Spring的管理 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="mapper" />
	</bean>

</beans>

创建springMVC.xml映射文件

<?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">

	<!-- 注解驱动，以使得访问路径与方法的匹配可以通过注解配置 -->
	<mvc:annotation-driven></mvc:annotation-driven>
	<!-- 组件扫描，扫描Controller,并将其生命周期纳入Spring管理 -->
	<context:component-scan base-package="controller" />

	<!-- 视图定位 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>

</beans>

创建listCategory.jsp视图页面

<%@ 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>
	<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>

部署Tomcat后浏览器访问http://localhost:8080/SpringMVC_Mybatis/listCategory


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