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SpringMVC Mybatis整合

工程目錄樹

目錄樹

工程裡共2個配置檔案,分別是spring.xml,是spring和mybatis的配置檔案,還有一個是springMVC的配置檔案,此外有2個資原始檔:jdbc.propertis和log4j.properties.

步驟

建立Maven工程

  1. New->Maven Project->maven-archetype-webapp
  2. 右鍵工程->properties->Java Build Path->Libraries-JRE [JavaSE]->edit->1.8
  3. 右鍵工程->properties->Project Facets->Java->1.8
  4. Apply and Close

修改pom.xml

新增以下包

<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<spring.version>4.3.15.RELEASE</spring.version>
		<mybatis.version>3.1.1</mybatis.version>
		<mybatis-spring.version>1.2.3</mybatis-spring.version>
		<mysql-connector-java.version>5.1.6</mysql-connector-java.version>
		<druid>1.0.12</druid>
		<jackson.version>2.5.4</jackson.version>
	</properties>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/log4j/log4j -->
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.17</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.0.1</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</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-tx</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${mybatis.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>${mybatis-spring.version}</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>${mysql-connector-java.version}</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>${druid}</version>
		</dependency>
		<!-- json -->
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-annotations</artifactId>
			<version>${jackson.version}</version>
		</dependency>

		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>${jackson.version}</version>
		</dependency>

		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>${jackson.version}</version>
		</dependency>
  </dependencies>

建立log4j.propertis

# Global logging configuration
log4j.rootLogger=INFO, CONSOLE
# Console output...
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%5p [%t] - %m%n

修改web.xml

<web-app></web-app>

內新增

<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<!-- 編碼 -->
	<filter>
		<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>
	<!-- servlet for spring mvc container -->
	<servlet>
		<servlet-name>springMvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<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>springMvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
	</welcome-file-list>

web.xml指定了2個配置檔案,分別是spring.xml和springMVC.xml.

建立spring.xml

spring.xml的檔案目錄為src/main/resources/

<?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.service" />
    <bean id="propertyConfigurer"  
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:jdbc.properties" />  
    </bean>
 
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
      <property name="driverClassName" value="${driver}"> 
      <property name="url" value="${url}">   
      <property name="username" value="${username}"> 
      <property name="password" value="${password}">   
    </bean>
     
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="typeAliasesPackage" value="com.pojo" />
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:com/mapper/*.xml"/>
    </bean>
 
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.mapper"/>
    </bean>
 </beans>

建立jdbc.propertis

driver=com.mysql.jdbc.Driver  
url=jdbc:mysql://localhost:3306/how2java?useUnicode=true&amp;characterEncoding=UTF-8
username=root  
password=admin

建立springMVC.xml

SpringMVC.xml的檔案目錄為src/main/resources/

<?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"
	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/tx 
       http://www.springframework.org/schema/tx/spring-tx.xsd
          http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">
	<!-- 配置掃描的包 -->
	<context:annotation-config />
	<context:component-scan
		base-package="com.controller">
		<context:include-filter type="annotation"
			expression="org.springframework.stereotype.Controller" />
	</context:component-scan>
	<!-- 註冊HandlerMapper、HandlerAdapter兩個對映類 -->
	<mvc:annotation-driven />
	<!-- 訪問靜態資源 -->
	<mvc:default-servlet-handler />
	<!-- 檢視解析器 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/WEB-INF/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
</beans>

建立Category類

package com.pojo;

public class Category {
	private int id;
	private String name;
	public Category(){
	}
	public Category(String name,int id){
		setId(id);
		setName(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 + "]";
	}
}

建立CategoryMapper介面

package com.mapper;
 
import java.util.List;
import com.pojo.Category; 

public interface CategoryMapper {
    public int add(Category category);  
    public void delete(int id);    
    public Category get(int id);
    public Category getFname(String name);   
    public int update(Category category);        
    public List<Category> list();    
    public int count();  
}

建立CategoryMapper介面的對映檔案Category.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.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>
	      
	    <select id="getFname" parameterType="string" resultType="Category">
	        select * from   category_  where name= #{name}    
	    </select>

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

建立CategoryService介面

package com.service;

import java.util.List;
import com.pojo.Category;

public interface CategoryService {
	List<Category> list();
}

建立CategoryServiceImpl類

package com.service.impl;

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

建立CategoryController類

package com.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.pojo.Category;
import com.service.CategoryService;

@Controller
@RequestMapping("")
public class CategoryController {
	@Autowired
    CategoryService categoryService;

    @RequestMapping("listCategory")
    public ModelAndView listCategory(){
        ModelAndView mav = new ModelAndView();
        List<Category> cs= categoryService.list();
        mav.addObject("cs", cs);
        mav.setViewName("demo");
        return mav;
    }
} 

建立demo.jsp

目錄為src/main/webapp/WEB-INF/

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" import="java.util.*" isELIgnored="false" %>
  
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
  
<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>

部署在Tomcat中執行