SSM+Druid的搭建

SSM+druid开发配置

工程目录

1、先从pom文件开始吧

<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>com.yangpei</groupId>

<artifactId>RedLemon</artifactId>

<version>0.0.1-SNAPSHOT</version>

<packaging>war</packaging>

<name>RedLemon</name>

<url>https://home.cnblogs.com/u/InterfaceAOP/</url>

<inceptionYear>2019-2020</inceptionYear>

<!-- 项目属性 -->

<properties>

<spring-version>4.1.9.RELEASE</spring-version>

<mybatis.version>3.2.8</mybatis.version>

<mybatis-spring.version>1.2.3</mybatis-spring.version>

<druid.version>1.1.10</druid.version>

<!-- tomcat -->

<tomcat.version>2.2</tomcat.version>

<webserver.port>8181</webserver.port>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

</properties>

<dependencies>

<!-- druid配置 -->

<dependency>

<groupId>com.alibaba</groupId>

<artifactId>druid</artifactId>

<version>${druid.version}</version>

</dependency>

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

<version>5.1.42</version>

</dependency>

<!-- mybatis -->

<dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis</artifactId>

<version>3.4.4</version>

</dependency>

<dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis-spring</artifactId>

<version>1.3.1</version>

</dependency>

<!-- spring -->

<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-beans</artifactId>

<version>${spring-version}</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-orm</artifactId>

<version>${spring-version}</version>

</dependency>

<!-- log4j -->

<dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-api</artifactId>

<version>1.6.6</version>

</dependency>

<dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-log4j12</artifactId>

<version>1.6.6</version>

</dependency>

<dependency>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

<version>1.2.16</version>

</dependency>

</dependencies>

<!-- 开发者信息 -->

<developers>

<!-- <developer>

<id>LonelyPerson</id>

<name>MaYangPei</name>

<email>1582240996@qq.com</email>

<roles>

<role>Project LonelyPerson</role>

</roles>

<timezone>+8</timezone>

</developer> -->

</developers>

<build>

<plugins>

<!-- JDK版本变动解决方案 -->

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<version>3.1</version>

<configuration>

<source>1.8</source>

<target>1.8</target>

</configuration>

</plugin>

<!-- tomcat7插件 -->

<plugin>

<groupId>org.apache.tomcat.maven</groupId>

<artifactId>tomcat7-maven-plugin</artifactId>

<version>${tomcat.version}</version>

<configuration>

<port>${webserver.port}</port>

<path>/</path>

<uriEncoding>${project.build.sourceEncoding}</uriEncoding>

</configuration>

</plugin>

</plugins>

</build>

</project>

lonelyPerson.properties配置文件

jdbc.type=mysql

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/lonelyperson?useUnicode=true&characterEncoding=utf-8

jdbc.username=root

jdbc.password=root

#druid datasource

druid.initialSize=10

druid.minIdle=10

druid.maxActive=50

druid.maxWait=60000

druid.timeBetweenEvictionRunsMillis=30000

druid.minEvictableIdleTimeMillis=150000

druid.validationQuery=SELECT 'x'

druid.validationQueryTimeout=3600

druid.testWhileIdle=true

druid.testOnBorrow=false

druid.testOnReturn=false

druid.removeAbandoned=true

druid.removeAbandonedTimeout=1800000

druid.logAbandoned=true

druid.poolPreparedStatements=true

druid.maxPoolPreparedStatementPerConnectionSize=20

druid.filters=wall,stat

mybatis-config.xml文件

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE configuration

        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

        "http://mybatis.org/dtd/mybatis-3-config.dtd">

<!-- 全局参数 -->

<settings>

<!-- 使全局的映射器启用或禁用缓存。 -->

<setting name="cacheEnabled" value="true"/>

<!-- 全局启用或禁用延迟加载。当禁用时，所有关联对象都会即时加载。 -->

<setting name="lazyLoadingEnabled" value="true"/>

<!-- 当启用时，有延迟加载属性的对象在被调用时将会完全加载任意属性。否则，每种属性将会按需要加载。 -->

<setting name="aggressiveLazyLoading" value="true"/>

<!-- 是否允许单条sql 返回多个数据集  (取决于驱动的兼容性) default:true -->

<setting name="multipleResultSetsEnabled" value="true"/>

<!-- 是否可以使用列的别名 (取决于驱动的兼容性) default:true -->

<setting name="useColumnLabel" value="true"/>

<!-- 允许JDBC 生成主键。需要驱动器支持。如果设为了true，这个设置将强制使用被生成的主键，有一些驱动器不兼容不过仍然可以执行。  default:false  -->

<setting name="useGeneratedKeys" value="false"/>

<!-- 指定 MyBatis 如何自动映射 数据基表的列 NONE：不隐射　PARTIAL:部分  FULL:全部  -->  

<setting name="autoMappingBehavior" value="PARTIAL"/>

<!-- 这是默认的执行类型  （SIMPLE: 简单； REUSE: 执行器可能重复使用prepared statements语句；BATCH: 执行器可以重复执行语句和批量更新）  -->

<setting name="defaultExecutorType" value="SIMPLE"/>

<!-- 使用驼峰命名法转换字段。 -->

<setting name="mapUnderscoreToCamelCase" value="true"/>

<!-- 设置本地缓存范围 session:就会有数据的共享  statement:语句范围 (这样就不会有数据的共享 ) defalut:session -->

        <setting name="localCacheScope" value="SESSION"/>

        <!-- 设置但JDBC类型为空时,某些驱动程序 要指定值,default:OTHER，插入空值时不需要指定类型 -->

        <setting name="jdbcTypeForNull" value="NULL"/>

</settings>

spring-context.xml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:context="http://www.springframework.org/schema/context"

xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"

xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

<!-- 启动包扫描功能 -->

<!-- <context:component-scan base-package="com.yangpei.controller" />

<context:component-scan base-package="com.yangpei.service" /> -->

<!-- 加载配置属性文件 -->

<context:property-placeholder

ignore-unresolvable="true" location="classpath:lonelyPerson.properties" />

<!-- 数据源 -->

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"

init-method="init" destroy-method="close">

<property name="driverClassName" value="${jdbc.driver}" />

<property name="url" value="${jdbc.url}" />

<property name="username" value="${jdbc.username}" />

<property name="password" value="${jdbc.password}" />

<!-- 配置监控统计拦截的filters -->

<!-- <property name="filters" value="stat" /> -->

<!-- 连接池最大值 -->

<property name="maxActive" value="${druid.maxActive}" />

<!-- 初始化大小 -->

<property name="initialSize" value="${druid.initialSize}" />

<!-- 获取连接最大等待时间 -->

<property name="maxWait" value="${druid.maxWait}" />

<!-- 连接池最小空闲 -->

<!-- <property name="minIdle" value="1" /> -->

<!-- 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="${druid.timeBetweenEvictionRunsMillis}" />

<property name="validationQuery" value="${druid.validationQuery}" />

<property name="validationQueryTimeout" value="${druid.validationQueryTimeout}" />

<property name="testWhileIdle" value="${druid.testWhileIdle}" /><!--空闲时是否进行验证，检查对象是否有效 -->

<property name="testOnBorrow" value="${druid.testOnBorrow}" /><!--取得对象时是否进行验证，检查对象是否有效 -->

<property name="testOnReturn" value="${druid.testOnReturn}" /><!--返回对象时是否进行验证 -->

<property name="removeAbandoned" value="${druid.removeAbandoned}" />

<property name="removeAbandonedTimeout" value="${druid.removeAbandonedTimeout}" />

<property name="logAbandoned" value="${druid.logAbandoned}" />

<!-- 打开PSCache，并且指定每个连接上PSCache的大小 oracle=true mysql=false -->

<property name="poolPreparedStatements" value="${druid.poolPreparedStatements}" /><!--

表明是否开启statement cache，默认为false，也就是不开启 -->

<property name="maxPoolPreparedStatementPerConnectionSize"

value="${druid.maxPoolPreparedStatementPerConnectionSize}" />

<!-- 配置监控统计拦截的filters -->

<property name="filters" value="${druid.filters}" /><!-- 配置监控统计拦截的filters，去掉后监控界面sql无法统计 -->

</bean>

<bean id="sqlSession"

class="org.mybatis.spring.SqlSessionTemplate">

<constructor-arg name="sqlSessionFactory"

ref="sqlSessionFactory"></constructor-arg>

<constructor-arg name="executorType" value="BATCH"></constructor-arg>

</bean>

<!-- session 工厂 -->

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

<!-- 用于连接数据库的数据源 -->

<property name="dataSource" ref="dataSource" />

<!-- 指定Mybatis的配置文件位置 -->

<!-- <property name="configLocation" value="classpath:mybatis-config.xml" />

<property name="mapperLocations">

<list>

<value>classpath*:mapper/*Mapper.xml</value>

</list>

</property> -->

</bean>

<!-- 管理mybatismapper.xml文件 -->

<!-- <bean id="mapperScannerConfigurer"

class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="basePackage" value="com.yangpei.**.mapper" />

</bean> -->

<!-- 开启事务管理 -->

<!-- <bean id="transactionManager"

class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<property name="dataSource" ref="dataSource" />

</bean> -->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<!-- 扫描的包路径，如果需要扫描多个包，中间使用逗号分隔 -->

<property name="basePackage" value="com.yangpei.**.mapper"></property>

<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>

</bean> 

</beans>

spring-servlet.xml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: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">

    <!-- 启动注解驱动的spring mvc 功能 -->

    <mvc:annotation-driven/>

<!-- <mvc:default-servlet-handler/>  放行资源的第三种方式

 -->  

  <!-- 启动包扫描功能 -->

    <context:component-scan base-package="com.yangpei.controller" />

    <context:component-scan base-package="com.yangpei.service" />

  <mvc:resources location="/js/" mapping="/js/**"/>

    <mvc:resources location="/css/" mapping="/css/**"/>

    <mvc:resources location="/bootstrap3.3.5/" mapping="/bootstrap3.3.5/**"/>

    <mvc:resources location="/assets/" mapping="/assets/**"/>

    <mvc:resources location="/ztree/" mapping="/ztree/**"/> 

    <!-- <mvc:resources location="/WEB-INF/views/order/" mapping="/order/**"/> --> 

    

    <!-- 配置全局异常类 -->

   <!--  <bean class="com.haoyu.common.SpringExceptionResolver"></bean> -->

    <!-- 配置全局上下文 -->

    <!-- <bean id="application" class="com.haoyu.common.ApplicationContextHelper"></bean> -->

<!-- 配置视图解析器 -->

  <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />

<!-- 配置json解析器 -->

    <bean id="jsonView" class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />

<!-- 默认视图解析器 -->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/view/" />

        <property name="suffix" value=".html" />

    </bean>

</beans>

Web.xml文件

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0">

  <listener>

    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

  </listener>

  <context-param>

    <param-name>contextConfigLocation</param-name>

    <param-value>classpath:spring-context.xml</param-value>

  </context-param>

  <servlet>

    <servlet-name>springServlet</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <init-param>

      <param-name>contextConfigLocation</param-name>

      <param-value>classpath:spring-servlet.xml</param-value>

    </init-param>

    <load-on-startup>1</load-on-startup>

  </servlet>

  <servlet-mapping>

    <servlet-name>springServlet</servlet-name>

    <url-pattern>*.do</url-pattern>

  </servlet-mapping>

  <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>

  </filter-mapping>

</web-app>

然后写dao层--就是数据库的实体类。

public class User {

    private Long id;

    private String name;

    private String password;

    private String sex;

private Integer age;

....省略get和set方法

}

测试，是否已经连接上数据库

package com.yangpei.test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.yangpei.dao.User;

import com.yangpei.mapper.UserMapper;

public class DaoTest {

private static ApplicationContext context=new ClassPathXmlApplicationContext("spring-context.xml");

public static void main(String[] args) {

UserMapper userMapper = (UserMapper) context.getBean(UserMapper.class);

System.out.println(userMapper);

User user = userMapper.selectByPrimaryKey(1L);

System.out.println(user.getPassword());

}

}

我这里打印了数据库的密码，