Spring MVC + Mybaties 集成

作者: Impact | 来源:发表于2017-07-03 16:55 被阅读0次

环境和工具

Java版本：

java version "1.7.0_80"
Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)

Maven版本：

Apache Maven 3.1.1 (0728685237757ffbf44136acec0402957f723d9a; 2013-09-12+0800)
Maven home: D:\maven3\bin\..
Java version: 1.7.0_80, vendor: Oracle Corporation
Java home: D:\Java\jdk1.7.0_80\jre
Default locale: zh_CN, platform encoding: GBK
OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"

Eclipse版本：

Version: Mars.2 Release (4.5.2)
Build id: 20160218-0600

创建maven web项目

项目创建和目录

利用Eclipse创建一个Maven project，在Select an Archetype时，选择maven-archetype-webapp，填好groupId和artifactId，完成创建后查看项目。如果项目报错，根据提示修改jre并添加tomcat的library。

Maven项目的目录说明：

目录	说明
src/main/java	Application/Library sources（源代码）
src/main/resources	Application/Library resources（资源文件）
src/main/filters	Resource filter files
src/main/webapp	Web application sources（html、js等文件）
src/test/java	Test sources
src/test/resources	Test resources
src/test/filters	Test resource filter files
src/it	Integration Tests (primarily for plugins)
src/assembly	Assembly descriptors
src/site	Site
LICENSE.txt	Project's license
NOTICE.txt	Notices and attributions required by libraries that the project depends on
README.txt	Project's readme

项目结构和代码

主要结构和配置文件：


modele.com.base
--controller
--dao
--entity
--service
    --impl
    
src/main/resources
--/spring-mvc.xml
--/spring-mybatise.xml
--/config/config.properties
--/mapper/*.xml

下面是配置文件的内容，文章的最后贴上测试代码。

修改配置文件

pom.xml

主要是添加Spring和Mybaties等依赖。

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.project</groupId>
  <artifactId>model</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>model Maven Webapp</name>
  <url>http://maven.apache.org</url>
  
    <properties>
    
        <!-- junit -->
        <junit.version>4.11</junit.version>
    
        <!-- spring -->
        <spring.version>4.0.8.RELEASE</spring.version>
        
        <!-- jdbc driver setting -->
        <mysql.driver.version>5.1.30</mysql.driver.version>
        <!-- mybaties -->
        <mybatis.version>3.2.8</mybatis.version>
        <mybatis-spring.version>1.2.2</mybatis-spring.version>
        
        <!-- druid  -->
        <druid.version>1.0.11</druid.version>

    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
            <scope>provided</scope>
        </dependency>

        <!-- spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</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-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        
        <!-- jdbc driver -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.driver.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>
    
        <!-- connection pool -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>${druid.version}</version>
        </dependency>
    
        <!-- dataSource -->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
    
        <dependency>
            <groupId>commons-pool</groupId>
            <artifactId>commons-pool</artifactId>
            <version>1.6</version>
        </dependency>
    
    </dependencies>
    
  <build>
    <finalName>model</finalName>
  </build>
</project>

web.xml

Path:src/main/webapp/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 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_3_0.xsd">

    <display-name>Archetype Created Web Application</display-name>

    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <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 servlet -->
    <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:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>  
    
</web-app>

config.properties

注意不要有空格。

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8
username=root
password=root
#\u5B9A\u4E49\u521D\u59CB\u8FDE\u63A5\u6570  
initialSize=0  
#\u5B9A\u4E49\u6700\u5927\u8FDE\u63A5\u6570  
maxActive=20  
#\u5B9A\u4E49\u6700\u5927\u7A7A\u95F2  
maxIdle=20  
#\u5B9A\u4E49\u6700\u5C0F\u7A7A\u95F2  
minIdle=1  
#\u5B9A\u4E49\u6700\u957F\u7B49\u5F85\u65F6\u95F4  
maxWait=60000

spring-mvc.xml

Path:src/main/resources/spring-mvc.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" 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">

    <!-- 配置扫描的包 -->
    <context:component-scan base-package="model.com.base" />

    <!-- 注册HandlerMapper、HandlerAdapter两个映射类 -->
    <mvc:annotation-driven />

    <!-- 访问静态资源 -->
    <mvc:default-servlet-handler />
    
    <!-- 引入配置文件 -->
    <import resource="spring-mybatise.xml" />
    
    <!-- 视图解析器 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>

spring-mybatise.xml

Path: src\main\resources\spring-mybatise.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:p="http://www.springframework.org/schema/p"  
    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">  
    <!-- 引入配置文件 -->  
    <bean id="propertyConfigurer"  
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="location" value="classpath:config/config.properties" />  
    </bean>  
  
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
        destroy-method="close">  
        <property name="driverClassName" value="${driver}" />  
        <property name="url" value="${url}" />  
        <property name="username" value="${username}" />  
        <property name="password" value="${password}" />  
        <!-- 初始化连接大小 -->  
        <property name="initialSize" value="${initialSize}"></property>  
        <!-- 连接池最大数量 -->  
        <property name="maxActive" value="${maxActive}"></property>  
        <!-- 连接池最大空闲 -->  
        <property name="maxIdle" value="${maxIdle}"></property>  
        <!-- 连接池最小空闲 -->  
        <property name="minIdle" value="${minIdle}"></property>  
        <!-- 获取连接最大等待时间 -->  
        <property name="maxWait" value="${maxWait}"></property>  
    </bean>  
  
    <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />  
        <!-- 自动扫描mapping.xml文件 -->  
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>  
    </bean>  
  
    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->  
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="annotationClass" value="org.springframework.stereotype.Repository" />
        <property name="basePackage" value="model.com.*.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
    </bean>  
  
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <bean id="transactionManager"  
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    </bean>  
  
</beans>

测试

实现功能：根据id查询记录的详细信息。

数据库表：

CREATE TABLE `user_t` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_name` varchar(40) NOT NULL,
  `password` varchar(255) NOT NULL,
  `age` int(4) NOT NULL,
  PRIMARY KEY (`id`)
)

测试Entity

UserEntity.java

package model.com.base.entity;

public class UserEntity {
    
    private int id;
    private String name;
    private String password;
    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 String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    
    @Override
    public String toString() {
        
        return "id:"+this.id+",name:"+this.name+",age:"+this.age;
    }
    
}

查询 sql

UserDao.java

package model.com.base.dao;

import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

import model.com.base.entity.UserEntity;

@Repository
public interface UserDao {

    UserEntity selectByPrimaryKey(@Param("id")int userId);
}

user.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="model.com.base.dao.UserDao">

    <resultMap type="model.com.base.entity.UserEntity" id="userMap">
        <id property="id" column="id" />
        <result property="name" column="user_name" />
        <result property="password" column="password" />
        <result property="age" column="age" />
    </resultMap>
    
    <select id="selectByPrimaryKey" resultMap="userMap">
        SELECT id,user_name,password,age
        FROM user_t a
        WHERE a.id = #{id}
    </select>
    
</mapper>

Service

UserService.java

package model.com.base.service;

import model.com.base.entity.UserEntity;

public interface UserService {

    public UserEntity getUserById(int userId);
}

UserServiceImpl.java

package model.com.base.service.impl;

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

import model.com.base.dao.UserDao;
import model.com.base.entity.UserEntity;
import model.com.base.service.UserService;

@Service
public class UserServiceImpl implements UserService{
    
    @Autowired
    private UserDao userDao;

    public UserEntity getUserById(int userId) {
        return this.userDao.selectByPrimaryKey(userId);  
    }

}

请求处理

UserController.java

package model.com.base.controller;

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import model.com.base.entity.UserEntity;
import model.com.base.service.impl.UserServiceImpl;

@Controller
public class UserController{

    @Autowired
    private UserServiceImpl userService;
    
    /**
     * 根据id查询用户信息
     * 
     * @param id
     * @return
     */
    @RequestMapping(value="system/select")
    @ResponseBody
    public String selectDate(@RequestParam("id")int id){
        System.out.println("------------request----------id:"+id);
        
        UserEntity user = userService.getUserById(id);
        
        
        return user.toString();
    }
    
}

结果

浏览器地址栏输入：

http://localhost:8080/model/system/select?id=1

展示结果：

id:1,name:test,age:24