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  • SpringMVC,Mybatis,FreeMarker连接mycat示例(一)

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	<dl class="box_t"><dd>SpringMVC,Mybatis,FreeMarker连接mycat示例(一)</dd></dl>
																									
		
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    <h1 id="项目结构如图">项目结构如图:</h1>

    这里写图片描述

    这里写图片描述

    首先是各种配置文件，属性文件

    mycat.properties内容:

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    #数据库连接配置
    #以下是mycat中间件连接
    jdbc.driverClassName=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:8066/SSMDB?useUnicode=true&characterEncoding=UTF-8
    jdbc.username=wu
    jdbc.password=hello123
     
    #以下是mysql连接
    #jdbc.url=jdbc:mysql://localhost:3306/MyCAT_DB?useUnicode=true&characterEncoding=UTF-8
    #jdbc.username=root
    #jdbc.password=123456
     
    #定义初始连接数
    jdbc.initialPoolSize=10
     
    jdbc.maxPoolSize=200
    jdbc.minPoolSize=5
    jdbc.maxIdleTime=20
    jdbc.acquireIncrement=10
    jdbc.maxStatements=50
    jdbc.idleConnectionTestPeriod=60
     
    jdbc.initialSize=5
    #定义最大空闲 
    jdbc.maxIdle=20
    #定义最小空闲
    jdbc.minIdle=5
    #定义最大连接数
    jdbc.maxActive=200
    jdbc.removeAbandonedTimeout=300
    #定义最长等待时间 
    jdbc.maxWait=60000
    jdbc.maxOpenPreparedStatements=10

    log4j.xml内容:

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    <!--?xml version='1.0' encoding='UTF-8' ?-->
     
     
    <log4j:configuration xmlns:log4j="https://jakarta.apache.org/log4j/">
     
         
            <layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%d [%7r] %6p - %30.30c - %m ">
            </layout>
        </appender>
     
        <param name="Append" value="false"><param name="file" value="mycatDemo-debug.log">
            <layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%d [%7r] %6p - %30.30c - %m ">
            </layout>
        </appender>
     
        <param name="DatePattern" value="'.'yyyy-MM-dd"><param name="Append" value="true"><param name="file" value="mycatDemo.log">
            <layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%d [%7r] %6p - %30.30c - %m ">
            </layout>
            <filter class="org.apache.log4j.varia.LevelRangeFilter"><param name="LevelMin" value="DEBUG">
            </filter>
        </appender>
     
        <!--
                <param name="DatePattern" value="'.'yyyy-MM-dd"/>
                <param name="file" value="${las-im-scheduler.log.path}/las-report-zookeeper.log"/>
                <layout class="org.apache.log4j.PatternLayout">
                    <param name="ConversionPattern" value="%d [%7r] %6p - %30.30c - %m "/>
                </layout>
            </appender>
     
            <category name="org.apache.zookeeper" additivity="false">
                <priority value="debug"/>
                 
            </category>
        -->
     
        <category additivity="true" name="org.cometd">
            <priority value="ERROR">
             
        </appender-ref></priority></category>
     
        <category additivity="true" name="org.springframework.orm.ibatis3">
            <priority value="INFO">
             
        </appender-ref></priority></category>
     
        <category additivity="true" name="org.apache.ibatis">
            <priority value="ERROR">
             
        </appender-ref></priority></category>
     
        <category additivity="true" name="java.sql">
            <priority value="ERROR">
             
        </appender-ref></priority></category>
     
        <category additivity="true" name="com.mycat">
            <priority value="debug">
             
        </appender-ref></priority></category>
     
        <root>
            <priority value="ERROR">
             
             
        </appender-ref></appender-ref></priority></root>
     
    </log4j:configuration>

    sqlmap文件下的TestMapper.xml实体映射文件

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    <!--?xml version="1.0" encoding="UTF-8" ?-->
     
     
    <mapper namespace="com.mycat.test.model.Test">
     
        <resultmap id="testResultMap" type="com.mycat.test.model.Test">
            <result column="id_" property="id">
            <result column="name_" property="name">
            <result column="user_id" property="userId">
        </result></result></result></resultmap>
     
        <select id="selectAll" resultmap="testResultMap">
            select * from sam_test
        </select>
     
        <select id="selectSome" parametertype="java.util.Map" resultmap="testResultMap">
            select * from sam_test limit #{offset},#{limit}
        </select>
     
        <select id="getObject" parametertype="java.lang.Object" resultmap="testResultMap">
            select * from sam_test where id_ = #{id}
        </select>
     
        <insert id="insert" keyproperty="id_" parametertype="com.mycat.test.model.Test">
            INSERT INTO sam_test(
            name_,
            user_id
            )
            VALUES(
                #{name,jdbcType=VARCHAR},
                #{userId,jdbcType=BIGINT}
            )
            <selectkey keyproperty="id" order="AFTER" resulttype="java.lang.Integer">
                select last_insert_id() as id
            </selectkey>
        </insert>
     
        <update id="update" parametertype="com.mycat.test.model.Test">
            update sam_test
            <set>
                <if test="name != null and name != ''">
                  name_ = #{name},
                </if>
                <if test="userId != null">
                  user_id = #{userId},
                </if>
            </set>
            where id_=#{id}
        </update>
     
        <!-- #{}中的参数名与方法中的参数的复杂数据类型的属性名一致 -->
        <delete id="delete" parametertype="java.lang.Integer">
            delete from sam_test where id_ = #{id}
        </delete>
     
        <select id="findOneByMap" resultmap="testResultMap">
            select * from sam_test where 1=1 AND
             
                ${param.name} = #{param.value}
             
            limit 0, 1
        </select>
     
        <select id="findOneByObject" parametertype="com.mycat.test.model.Test" resultmap="testResultMap">
            select * from sam_test
             
                     
                        and name_=#{name}
                     
                     
                        and user_id=#{userId}
                     
             
            limit 0, 1
        </select>
     
        <select id="findByMap" resultmap="testResultMap">
            select * from sam_test where 1=1 AND
             
                ${param.name} = #{param.value}
             
        </select>
     
        <select id="findByObject" parametertype="com.mycat.test.model.Test" resultmap="testResultMap">
            select * from sam_test
             
                 
                    and name_=#{name}
                 
                 
                    and user_id=#{userId}
                 
             
        </select>
     
        <select id="findByIn" resultmap="testResultMap">
            select * from sam_test where 1=1 AND
             
                ${param.name} IN (#{param.value})
             
        </select>
     
        <select id="findByLike" resultmap="testResultMap">
            select * from sam_test where 1=1 AND
             
                ${param.name} LIKE #{param.value}
             
        </select>
     
        <select id="getTotalCount" resulttype="int">
            select count(1) from sam_test
        </select>
     
        <select id="getCount" parametertype="java.util.Map" resulttype="int">
            select count(1) from sam_test where 1=1
             
            ${whereClause}
             
        </select>
     
        <select id="query" parametertype="java.util.Map" resultmap="testResultMap">
            select ${fieldsClause} from sam_test where 1=1
             
            ${whereClause}
             
             
            ${orderClause}
             
            limit ${limit} offset ${offset}
        </select>
    </mapper>

    spring-config-db.xml配置：

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    <!--?xml version="1.0" encoding="UTF-8"?-->
    <beans xmlns="https://www.springframework.org/schema/beans" xmlns:aop="https://www.springframework.org/schema/aop" xmlns:tx="https://www.springframework.org/schema/tx" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="https://www.springframework.org/schema/beans
           https://www.springframework.org/schema/beans/spring-beans-3.1.xsd
           https://www.springframework.org/schema/tx
           https://www.springframework.org/schema/tx/spring-tx.xsd
           https://www.springframework.org/schema/aop
           https://www.springframework.org/schema/aop/spring-aop.xsd">
     
        <!-- 配置Mybatis会话工厂 -->
        <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
     
            <!-- 注入DataSource -->
            <!-- 数据源 -->
            <property name="dataSource" ref="druidDataSource">
     
            <!-- 需要加载的mapper.xml，该bean被创建后，会自动加载这些文件。 -->
            <property name="mapperLocations">
                <list>
                      <!-- 自动匹配Mapper映射文件  --> 
                    <value>classpath*:sqlmap/*Mapper.xml</value>
                </list>
            </property>
        </property></bean>
     
        <bean class="org.mybatis.spring.SqlSessionTemplate" id="sqlSession">
            <constructor-arg ref="sqlSessionFactory">
        </constructor-arg></bean>
     
        <!-- Druid集连接池，首先spring配置DataSource -->
        <bean class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close" id="druidDataSource" init-method="init">
            <property name="driverClassName" value="${jdbc.driverClassName}">
     
             <!-- 基本属性 url、user、password --> 
            <property name="url" value="${jdbc.url}">
            <property name="username" value="${jdbc.username}">
            <property name="password" value="${jdbc.password}">
            <!--initialSize: 初始化连接-->
            <property name="initialSize" value="${jdbc.initialSize}">
            <!--minIdle: 最小空闲连接-->
            <property name="minIdle" value="${jdbc.minIdle}">
            <!--maxActive: 最大连接数量-->
            <property name="maxActive" value="${jdbc.maxActive}">
             <!--removeAbandoned: 对泄漏的连接，是否自动回收超时连接-->
            <property name="removeAbandoned" value="true">
            <!--removeAbandonedTimeout: 超时时间(以秒数为单位)-->
            <property name="removeAbandonedTimeout" value="${jdbc.removeAbandonedTimeout}">
            <!--maxWait: 超时等待时间以毫秒为单位 6000毫秒/1000等于60秒-->
            <property name="maxWait" value="${jdbc.maxWait}">
            <property name="defaultAutoCommit">
                <value>false</value>
            </property>
            <property name="validationQuery" value="select 1">
     
            <!-- 打开PSCache，并且指定每个连接上PSCache的大小 --> 
            <!-- 如果用Oracle，则把poolPreparedStatements配置为true，mysql可以配置为false。分库分表较多的数据库，建议配置为false --> 
            <property name="poolPreparedStatements" value="true">
            <property name="maxOpenPreparedStatements" value="${jdbc.maxOpenPreparedStatements}">
     
             <!-- 配置监控统计拦截的filters，去掉后监控界面sql无法统计 -->
             <!--<property name="filters" value="stat"/>-->
             <!-- 慢日志查询  缺省为3秒  修改为10秒 10000 --> 
            <!-- <property name="connectionProperties" value="druid.stat.slowSqlMillis=5000" />   -->
     
        </property></property></property></property></property></property></property></property></property></property></property></property></property></bean>
     
        <!-- druid 监控  spring  --> 
        <!--  <bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"/> -->
     
        <!-- 按类型拦截配置 -->
        <!-- <bean id="druid-type-proxyCreator" class="com.alibaba.druid.support.spring.stat.BeanTypeAutoProxyCreator"> -->
        <!-- 所有ABCInterface的派生类被拦截监控  -->
        <!-- <property name="targetBeanType" value="xxxx.ABCInterface" />
             <property name="interceptorNames">
            <list>
                <value>druid-stat-interceptor</value>
            </list>
        </property>
        </bean> -->
     
     
        <!-- 按照BeanId来拦截配置 -->
        <!-- <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="proxyTargetClass" value="true" />
        <property name="beanNames">
            <list> -->
                <!-- 这里配置需要拦截的bean id列表 -->
                <!-- <value>xxx-dao</value>
                <value>xxx-service</value>
            </list>
        </property>
        <property name="interceptorNames">
            <list>
                <value>druid-stat-interceptor</value>
            </list>
        </property>
        </bean> -->
     
        <!-- 方法名正则匹配拦截配置 -->
        <!--    <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">   -->
        <!--         <property name="patterns">   -->
        <!--             <list>   -->
        <!--                 <value>com.xinnet.*.service.*</value>   -->
        <!--                <value>com.mycompany.service.*</value> -->
        <!--                 <value>com.mycompany.dao.*</value> -->
        <!--             </list>   -->
        <!--         </property>   -->
        <!--     </bean>   -->
        <!--        -->
        <!--            -->
        <!--     </aop:config>   -->
     
     
         <!-- 配置事物管理器 -->
        <!-- 事务管理器 对mybatis操作数据库事务控制，spring使用jdbc的事务控制类 -->
        <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
             <!-- 数据源 dataSource在上面配置了 -->
            <property name="dataSource" ref="druidDataSource">
        </property></bean>
        <!-- 配置声明式事务 -->
        <tx:annotation-driven transaction-manager="transactionManager">
     
    </tx:annotation-driven></beans>
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    <!--?xml version="1.0" encoding="UTF-8"?-->
    <!--suppress ALL -->
    <beans xmlns="https://www.springframework.org/schema/beans" xmlns:context="https://www.springframework.org/schema/context" xmlns:mvc="https://www.springframework.org/schema/mvc" xmlns:util="https://www.springframework.org/schema/util" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="
                https://www.springframework.org/schema/beans
                https://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                https://www.springframework.org/schema/context
                https://www.springframework.org/schema/context/spring-context-3.1.xsd
                https://www.springframework.org/schema/mvc
                https://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
                https://www.springframework.org/schema/util
                https://www.springframework.org/schema/util/spring-util-3.1.xsd">
     
         <!-- spring 自动扫描组件 -->
         <!-- 自动扫描 controller 包下的所有类 --> 
         <!-- mvc controller -->
        <context:component-scan base-package="com.mycat">
            <context:include-filter expression=".*.controller.*" type="regex">
            <context:include-filter expression=".*.service.*" type="regex">
            <context:include-filter expression=".*.dao.*" type="regex">
        </context:include-filter></context:include-filter></context:include-filter></context:component-scan>
     
         <!-- 开启注解的功能 -->
         <!-- 启动支持 mvc 的注解，比如  @Controller, @RequestMapping 等--> 
        <mvc:annotation-driven>
        <!--<bean id="conversionService"-->
        <!--class="org.springframework.format.support.FormattingConversionServiceFactoryBean">-->
        <!--<property name="formatterRegistrars">-->
        <!--<bean class="com.jd.common.springmvc.converter.DefaultFormatterRegistrar"/>-->
        <!--</property>-->
        <!--</bean>-->
     
        <!-- 解决静态资源被拦截的问题 -->
        <mvc:default-servlet-handler>
     
        <!-- static resources -->
        <!--<mvc:resources location="/static/" mapping="/static/**" cache-period="864000"/>-->
        <!--<mvc:resources location="/js/" mapping="/js/**" cache-period="864000"/>-->
     
     
         <!-- 配置视图解析器，使得在JSP中能够使用完整的JSTL功能 -->
        <!-- 设置视图解析工具 --> 
        <!-- template view -->
        <bean class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer" id="freemarkerConfig">
            <property name="templateLoaderPath" value="/WEB-INF/views/">
            <property name="freemarkerSettings">
                <props>
                    <prop key="template_update_delay">0</prop>
                    <prop key="default_encoding">UTF-8</prop>
                    <prop key="number_format">0.##########</prop>
                    <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop>
                    <prop key="classic_compatible">true</prop>
                    <prop key="template_exception_handler">ignore</prop>
                </props>
            </property>
        </property></bean>
        <bean class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver" id="freeMarkerViewResolver">
            <!--<property name="layoutUrl" value="layout/default.ftl"/>-->
            <property name="cache" value="false">
            <property name="suffix" value=".ftl">
            <property name="requestContextAttribute" value="request">
            <property name="exposeSpringMacroHelpers" value="true">
            <property name="exposeRequestAttributes" value="true">
            <property name="exposeSessionAttributes" value="true">
            <property name="contentType" value="text/html;charset=UTF-8">
        </property></property></property></property></property></property></property></bean>
     
        <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
            <property name="defaultContentType" value="text/html">
            <!-- not by accept header -->
            <property name="ignoreAcceptHeader" value="true">
            <!-- by extension -->
            <property name="mediaTypes"><map>
                    <entry key="html" value="text/html">
                    <entry key="xml" value="application/xml">
                    <entry key="json" value="application/json">
                </entry></entry></entry></map>
            </property>
            <property name="viewResolvers">
                <list>
                    <ref bean="freeMarkerViewResolver">
                </ref></list>
            </property>
            <property name="defaultViews">
                <list>
                    <!-- for application/json -->
                    <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
                </bean></list>
            </property>
        </property></property></bean>
     
        <!-- locale related -->
        <!--<bean id="localeResolver" class="org.springframework.web.servlet.i18n.CookieLocaleResolver">-->
        <!--<property name="cookieName" value="_clientlocale"/>-->
        <!--<property name="defaultLocale" value="zh_CN"/>-->
        <!--<property name="cookieMaxAge" value="2147483647"/>-->
        <!--</bean>-->
        <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
        <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
            <property name="messageConverters">
                <util:list id="beanList">
                    <ref bean="mappingJacksonHttpMessageConverter">
                </ref></util:list>
            </property>
        </bean>
        <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" id="mappingJacksonHttpMessageConverter">
            <property name="supportedMediaTypes">
                <list>
                    <value>text/html;charset=UTF-8</value>
                </list>
            </property>
        </bean>
     
    </bean></mvc:default-servlet-handler></mvc:annotation-driven></beans>

    spring-config.xml配置:

    ?
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    <!--?xml version="1.0" encoding="UTF-8"?-->
    <beans xmlns="https://www.springframework.org/schema/beans" xmlns:context="https://www.springframework.org/schema/context" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="https://www.springframework.org/schema/beans
           https://www.springframework.org/schema/beans/spring-beans-3.1.xsd
           https://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
     
     
        <!-- spring容器中最多只能定义一个context:property-placeholder spring中 context:property-placeholder
            导入多个独立的 .properties配置文件 Spring容器仅允许最多定义一个PropertyPlaceholderConfigurer(或<context:property-placeholder/>)，其余的会被Spring忽略掉
            通配符解决 -->
        <!-- 引入项目配置文件 -->
        <!-- 加载db.properties文件中的内容,db.properties文件中的key要有一定的特殊规则 -->
        <context:property-placeholder location="classpath*:mycat.properties">
     
        <import resource="spring-config-mvc.xml">
     
        <!--文件中主要负责配置：加载db.properties、配置数据源、配置SqlSessionFactoryBean、Mapper扫描器-->
        <import resource="spring-config-db.xml">
     
    </import></import></context:property-placeholder></beans>

    暂时先到这里

    </div>
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  • 原文地址：https://www.cnblogs.com/jpfss/p/8136607.html
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