Velocity + log4j + Spring MVC + Spirng + MyBatis + Maven整合 / 憋错料

1. 整合Spring和MyBatis

注意：(1) 如果Mapper接口的名称是HelloWorldMapper，则对应的mapper映射文件也应该名称为HelloWorldMapper.xml或者是helloWorldMapper.xml。

(2) 对于Maven项目而言，我们通常会把配置文件放到resources目录下面的，对于HelloWorldMapper.xml文件我也喜欢放到该目录下面。但是如果直接放到该目录下面是找不到该mapper映射文件的。如果直接放到src/main/java目录对应的HelloWorldMapper接口的目录中是可以找到的，所以我们可以在resources目录下建一个目录为对应于HelloWorldMapper接口的目录。例如：com.jd.mapper.HelloWorldMapper目录，则在resources目录下也建一个目录com.jd.mapper.HelloWorldMapper.xml即可。

(3) 在使用MyBatis的时候，SQL语句是写在xml文件当中的，对于xml格式的文件而言，不允许出现类似“>”这样的字符，但是都可以使用<![CDATA[ ]]>符号将你写的含有特殊字符SQL语句括起来，将此类符号不进行解析。

(4) 在使用MyBatis框架的时候，你所写的Java实体类的属性字段必须和数据库中的字段名称相同。如果不同时，要在mapper映射文件中使用

<resultMap>进行特别的处理。

整合过程如下：

实体bean

package com.jd.common.bean;

/**
 * Created by shifeifei on 2015/7/26.
 */
public class User {
    private int id;
    private String name;
    private String phone;

    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 getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name=‘" + name + ‘\‘‘ +
                ", phone=‘" + phone + ‘\‘‘ +
                ‘}‘;
    }
}

mapper接口,对于mapper接口而言，一定要让它收Spring容器管理。

package com.jd.mapper;

import com.jd.common.bean.User;
import org.springframework.stereotype.Repository;

/**
 * Created by shifeifei on 2015/7/26.
 */

@Repository

public interface HelloWorldMapper {
    public User findUserById(Integer id);
}

Spring的配置文件：spring-config.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"
       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">

    <!--引入外部资源文件-->
    <context:property-placeholder location="classpath:/jdbc.properties"></context:property-placeholder>

    <!-- 数据源配置,使用DruidDataSource数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <!-- 基本属性 url、user、password -->
        <property name="url" value="jdbc:mysql://172.23.171.169:3306/activity"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>

        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="3"/>
        <property name="minIdle" value="1"/>
        <property name="maxActive" value="20"/>

        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="60000"/>

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>

        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000"/>
        <property name="validationQuery" value="SELECT ‘x‘"/>
        <property name="testWhileIdle" value="true"/>
        <property name="testOnBorrow" value="false"/>
        <property name="testOnReturn" value="false"/>
        <!-- 配置监控统计拦截的filters -->
        <property name="filters" value="stat"/>
    </bean>

    <!-- 配置会话工厂SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--指定连接池数据源-->
        <property name="dataSource" ref="dataSource"></property>
        <!--
            它一般对应我们的实体类所在的包，这个时候会自动取对应包中类名作为包的别名。
            多个package之间可以用逗号或者分号等来进行分隔。
        -->
        <property name="typeAliasesPackage" value="com.jd.common.bean"></property>
        <property name="mapperLocations">
            <list>
                <value>classpath:/com/jd/mapper/HelloWorldMapper.xml</value>
            </list>
        </property>
    </bean>
    <!-- Spring容器中配置mapper扫描器 -->
    <bean id="mapper" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 指定扫描包的路径，就是mapper接口的路径 -->
        <property name="basePackage" value="com.jd.mapper"></property>
        <!-- 配置sqlSessionFactoryBeanName,也就是配置会话工厂 -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
</beans>

资源文件：jdbc.properties

#因为是使用的阿里巴巴的连接池，可以不用写mysql的驱动，Druid能够自动的识别各种数据库驱动
flow.datasources.username=root
flow.datasources.password=123456
flow.datasources.url=jdbc:mysql://172.23.171.169:3306/activity

mapper映射文件：HelloWorldMapper.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">

<!-- namespace:SQL映射文件(***Mapper.xml文件)所在的路径 -->
<mapper namespace="com.jd.mapper.HelloWorldMapper">

    <sql id="COL_SELECT">
        <![CDATA[
          select * from test
        ]]>
    </sql>

    <select id="findUserById" parameterType="Integer" resultType="User">
        <include refid="COL_SELECT"></include>
        <!--使用<![CDATA[ ]]>符号进行说明，将">"等此类特殊符号不进行解析-->
        <![CDATA[
          where id < #{id}
        ]]>
    </select>
</mapper>

2. 整合Spring MVC + Velocity + log4j

(1) 导入Spring-MVC依赖包：spring-web-3.2.4.RELEASE和spring-webmvc-3.2.4.RELEASE。

(2) 导入Velocity依赖包：veloctiy-1.5和velocity-tools。

(3) 由于使用IDEA作为开发工具，自己新建web项目中servlet的jar包，所以还要导入servlet-api.jar包。

(4) 导入log4j的依赖包。

Spring MVC的配置文件：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"
       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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

       <!-- 自动扫描该包,受Spring容器管理 -->
       <context:component-scan base-package="com.jd.controller,com.jd.service,com.jd.mapper" />

       <!--配置velocity引擎-->
       <bean id="velocityConfig" class="org.springframework.web.servlet.view.velocity.VelocityConfigurer">
              <!--velocity文件存放的路径-->
              <property name="resourceLoaderPath" value="/WEB-INF/views/"/>

              <!--防止velocity页面乱码-->
              <property name="velocityProperties">
                     <props>
                            <prop key="input.encoding">UTF-8</prop>
                            <prop key="output.encoding">UTF-8</prop>
                            <prop key="contentType">text/html;charset=UTF-8</prop>
                     </props>
              </property>
       </bean>

       <!--配置velocity视图解析器-->
       <bean id="viewResolver" class="org.springframework.web.servlet.view.velocity.VelocityViewResolver">
              <property name="prefix" value=""/>
              <property name="suffix" value=".vm"/>

              <!--velocity页面显示乱码的解决的最重要的一步-->
              <property name="contentType" value="text/html;charset=UTF-8"/>
       </bean>
</beans>

web.xml配置

<?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"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">
    <!--加载Spring配置文件-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:/spring-config.xml</param-value>
    </context-param>

    <!--Web容器启动时加载Spring-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--log4j配置-->
    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>classpath:/log4j.properties</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>

    <!--配置编码过滤器-->
    <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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
    </filter-mapping>

    <!--配置Spring MVC-->
    <servlet>
        <servlet-name>spring-mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <!--加载spring-mvc的配置文件-->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:/spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>spring-mvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--配置druid连接池-->
    <servlet>
        <servlet-name>DruidStatView</servlet-name>
        <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>DruidStatView</servlet-name>
        <url-pattern>/druid/*</url-pattern>
    </servlet-mapping>
</web-app>

log4j.properties属性文件

#定义LOG输出级别
log4j.rootLogger=DEBUG,Console

#定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender

#可以灵活地指定日志输出格式，下面一行是指定具体的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout

#输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志
log4j.appender.Console.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

3. Maven的pom.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<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>test-framework</groupId>
    <artifactId>integrate-framework</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <!-- Spring 依赖包-->
    <dependencies>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>

        <!--MyBatis依赖包-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.2.2</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.0</version>
        </dependency>

        <!--Spring MVC依赖-->
        <dependency>
            <groupId>servlet-api</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>3.2.4.RELEASE</version>
        </dependency>

        <!--Velocity依赖-->
        <dependency>
            <groupId>velocity</groupId>
            <artifactId>velocity</artifactId>
            <version>1.5</version>
        </dependency>
        <dependency>
            <groupId>velocity-tools</groupId>
            <artifactId>velocity-tools</artifactId>
            <version>1.2</version>
        </dependency>

        <!--MySQL依赖-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.26</version>
        </dependency>

        <!--连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>0.2.25</version>
        </dependency>

        <!--log4j依赖-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

    </dependencies>

    <build>
        <!--产生的构件的文件名，默认值是${artifactId}-${version}
        <finalName>test-framework-1</finalName>-->

        <!--指定所有的资源文件的路径,这些资源被包含在最终的打包文件里。-->
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
        </resources>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <encoding>utf-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

4. 其他各个部分的代码

(1) controller包下的代码

package com.jd.controller;

import com.jd.common.bean.User;
import com.jd.service.HelloWorldService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Created by shifeifei on 2015/7/27.
 */
@Controller
public class HelloWorldController {
    @Autowired
    private HelloWorldService helloWorldServiceImpl;

    @RequestMapping( value = "/hello")
    public String hello(Model model) {
        User user = helloWorldServiceImpl.getUser();
        System.out.println("hello: " + user );
        model.addAttribute("user",user);
        return "index";
    }
}

(2) service包下的代码

package com.jd.service;

import com.jd.common.bean.User;

/**
 * Created by shifeifei on 2015/8/1.
 */
public interface HelloWorldService {
    public User getUser();
}

package com.jd.service;

import com.jd.common.bean.User;
import com.jd.mapper.HelloWorldMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * Created by shifeifei on 2015/8/1.
 */
@Service
public class HelloWorldServiceImpl implements HelloWorldService {

    @Autowired
    private HelloWorldMapper mapper;

    @Override
    public User getUser() {
        return mapper.findUserById(2);
    }
}

(3) mapper包下的代码

package com.jd.mapper;

import com.jd.common.bean.User;
import org.springframework.stereotype.Repository;

/**
 * Created by shifeifei on 2015/7/26.
 */

@Repository
public interface HelloWorldMapper {
    public User findUserById(Integer id);
}

整合结束，博客有源代码下载，注意我使用的是IDEA开发的，请不要直接把代码导入Eclipse中测试。代码下载链接: http://pan.baidu.com/s/18szAu

时间： 2024-09-30 14:51:06

Velocity + log4j + Spring MVC + Spirng + MyBatis + Maven整合

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