IDEA+MAVEN搭建SSM项目集成PageHelper与MBG
2018/12/24 16:06 分类: 技术交流 浏览:40
一、基础项目结构搭建1搭建项目结构
File->New->Project
创建好项目后,在src/main目录下创建java和resources
File->Project Structrue
选中main,右键new folder,然后分别设置为Sources和Resources
创建测试的目录结构
Webapp中结构的配置:
1配置文件:2.1 pom.xml:
代码清单1:
- <?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>cn.itsource</groupId>
- <artifactId>crm</artifactId>
- <version>1.0-SNAPSHOT</version>
- <packaging>war</packaging>
- <name>crm</name>
- <url>http://www.example.com</url>
- <properties>
- <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
- <maven.compiler.source>1.7</maven.compiler.source>
- <maven.compiler.target>1.7</maven.compiler.target>
- <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
- <!-- spring版本号 -->
- <spring.version>4.1.2.RELEASE</spring.version>
- <!-- mybatis版本号 -->
- <mybatis.version>3.2.1</mybatis.version>
- <!-- log4j日志文件管理包版本 -->
- <slf4j.version>1.7.2</slf4j.version>
- <log4j.version>1.2.17</log4j.version>
- <!-- jackson包版本 -->
- <jackson.version>2.5.0</jackson.version>
- </properties>
- <dependencies>
- <!--JUnit-->
- <dependency>
- <groupId>junit</groupId>
- <artifactId>junit</artifactId>
- <version>4.11</version>
- <scope>test</scope>
- </dependency>
- <!--Spring核心-->
- <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>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-context</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-core</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-expression</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-jdbc</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-test</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-tx</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>commons-logging</groupId>
- <artifactId>commons-logging</artifactId>
- <version>1.1.1</version>
- </dependency>
- <!--SpringMVC-->
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-web</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-webmvc</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <!--aop依赖包-->
- <dependency>
- <groupId>aopalliance</groupId>
- <artifactId>aopalliance</artifactId>
- <version>1.0</version>
- </dependency>
- <dependency>
- <groupId>org.aspectj</groupId>
- <artifactId>aspectjweaver</artifactId>
- <version>1.6.8</version>
- </dependency>
- <!--文件上传-->
- <dependency>
- <groupId>commons-fileupload</groupId>
- <artifactId>commons-fileupload</artifactId>
- <version>1.3.1</version>
- </dependency>
- <dependency>
- <groupId>commons-io</groupId>
- <artifactId>commons-io</artifactId>
- <version>2.2</version>
- </dependency>
- <!--jackson-->
- <dependency>
- <groupId>com.fasterxml.jackson.core</groupId>
- <artifactId>jackson-databind</artifactId>
- <version>${jackson.version}</version>
- </dependency>
- <dependency>
- <groupId>com.fasterxml.jackson.core</groupId>
- <artifactId>jackson-core</artifactId>
- <version>${jackson.version}</version>
- </dependency>
- <dependency>
- <groupId>com.fasterxml.jackson.core</groupId>
- <artifactId>jackson-annotations</artifactId>
- <version>${jackson.version}</version>
- </dependency>
- <!--数据库连接池-->
- <dependency>
- <groupId>commons-dbcp</groupId>
- <artifactId>commons-dbcp</artifactId>
- <version>1.2.2</version>
- </dependency>
- <dependency>
- <groupId>commons-pool</groupId>
- <artifactId>commons-pool</artifactId>
- <version>1.5.3</version>
- </dependency>
- <!--Mybatis集成-->
- <dependency>
- <groupId>org.mybatis</groupId>
- <artifactId>mybatis</artifactId>
- <version>${mybatis.version}</version>
- </dependency>
- <dependency>
- <groupId>org.mybatis</groupId>
- <artifactId>mybatis-spring</artifactId>
- <version>1.2.0</version>
- </dependency>
- <!--log4j-->
- <dependency>
- <groupId>log4j</groupId>
- <artifactId>log4j</artifactId>
- <version>${log4j.version}</version>
- </dependency>
- <!--slf4j-->
- <dependency>
- <groupId>org.slf4j</groupId>
- <artifactId>slf4j-api</artifactId>
- <version>${slf4j.version}</version>
- </dependency>
- <dependency>
- <groupId>org.slf4j</groupId>
- <artifactId>slf4j-log4j12</artifactId>
- <version>${slf4j.version}</version>
- <scope>test</scope>
- </dependency>
- <!--数据库连接驱动-->
- <dependency>
- <groupId>mysql</groupId>
- <artifactId>mysql-connector-java</artifactId>
- <version>5.1.46</version>
- </dependency>
- <!-- JSTL标签类 -->
- <dependency>
- <groupId>jstl</groupId>
- <artifactId>jstl</artifactId>
- <version>1.2</version>
- </dependency>
- <!--servlet-->
- <dependency>
- <groupId>javax.servlet</groupId>
- <artifactId>javax.servlet-api</artifactId>
- <version>3.0.1</version>
- <scope>provided</scope>
- </dependency>
- <dependency>
- <groupId>javax.servlet.jsp</groupId>
- <artifactId>jsp-api</artifactId>
- <version>2.2</version>
- <scope>provided</scope>
- </dependency>
- </dependencies>
- <build>
- <finalName>crm</finalName>
- <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
- <plugins>
- <plugin>
- <artifactId>maven-clean-plugin</artifactId>
- <version>3.0.0</version>
- </plugin>
- <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
- <plugin>
- <artifactId>maven-resources-plugin</artifactId>
- <version>3.0.2</version>
- </plugin>
- <plugin>
- <artifactId>maven-compiler-plugin</artifactId>
- <version>3.7.0</version>
- </plugin>
- <plugin>
- <artifactId>maven-surefire-plugin</artifactId>
- <version>2.20.1</version>
- </plugin>
- <plugin>
- <artifactId>maven-war-plugin</artifactId>
- <version>3.2.0</version>
- </plugin>
- <plugin>
- <artifactId>maven-install-plugin</artifactId>
- <version>2.5.2</version>
- </plugin>
- <plugin>
- <artifactId>maven-deploy-plugin</artifactId>
- <version>2.8.2</version>
- </plugin>
- <plugin>
- <groupId>org.mybatis.generator</groupId>
- <artifactId>mybatis-generator-maven-plugin</artifactId>
- <version>1.3.2</version>
- <configuration>
- <verbose>true</verbose>
- <overwrite>true</overwrite>
- </configuration>
- </plugin>
- </plugins>
- </pluginManagement>
- </build>
- </project>
2.2 web.xml:
代码清单2:
- <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_3_0.xsd"
- version="3.0">
- <display-name>crm</display-name>
- <!-- Spring的配置文件 -->
- <context-param>
- <param-name>contextConfigLocation</param-name>
- <param-value>classpath:applicationContext.xml</param-value>
- </context-param>
- <!--Spring*** ApplicationContext 载入 -->
- <listener>
- <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
- </listener>
- <!-- Spring MVC 核心配置开始 -->
- <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:applicationContext-mvc.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>
- <!-- 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>
- </filter>
- <filter-mapping>
- <filter-name>encodingFilter</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- </web-app>
2.3 applicationContext-mvc.xml
代码清单3:
- <?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">
- <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 -->
- <context:component-scan base-package="cn.itsource.crm.web.controller" />
- <!-- 启动SpringMVC的注解功能 -->
- <mvc:annotation-driven/>
- <!--静态资源放行-->
- <mvc:default-servlet-handler/>
- <!-- 定义跳转的文件的前后缀 ,视图解析器配置-->
- <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
- <property name="prefix" value="/WEB-INF/views/" />
- <property name="suffix" value=".jsp" />
- </bean>
- <!-- 配置文件上传解析器 -->
- <bean id="multipartResolver"
- class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
- <!-- 默认编码 -->
- <property name="defaultEncoding" value="utf-8" />
- <!-- 文件大小最大值 -->
- <property name="maxUploadSize" value="10485760000" />
- </bean>
- </beans>
2.4 db.properties
代码清单4:
- driver=com.mysql.jdbc.Driver
- url=jdbc:mysql:///itsource_dms?useUnicode=true&characterEncoding=utf-8
- username=root
- password=123456
2.5 log4j.properties
代码清单5:
- log4j.rootLogger=ERROR, stdout
- #log4j.rootLogger=NONE
- log4j.logger.cn.itsource=TRACE
- log4j.appender.stdout=org.apache.log4j.ConsoleAppender
- log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
2.6 applicationContext.xml
代码清单6:
- <?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"
- 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">
- <!--扫描的包-->
- <context:component-scan base-package="cn.itsource.crm.service"/>
- <!-- Jdbc配置文件 -->
- <context:property-placeholder location="classpath:db.properties" />
- <!-- 数据源dataSource -->
- <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
- <property name="driverClassName" value="${jdbc.driverClassName}" />
- <property name="url" value="${jdbc.url}" />
- <property name="username" value="${jdbc.username}" />
- <property name="password" value="${jdbc.password}" />
- <!--maxActive: 最大连接数量 -->
- <property name="maxActive" value="150" />
- <!--minIdle: 最小空闲连接 -->
- <property name="minIdle" value="5" />
- <!--maxIdle: 最大空闲连接 -->
- <property name="maxIdle" value="20" />
- <!--initialSize: 初始化连接 -->
- <property name="initialSize" value="30" />
- <!--maxWait: 超时等待时间以毫秒为单位 1000等于60秒 -->
- <property name="maxWait" value="1000" />
- <!-- 在空闲连接回收器线程运行期间休眠的时间值,以毫秒为单位. -->
- <property name="timeBetweenEvictionRunsMillis" value="10000" />
- <!-- 在每次空闲连接回收器线程(如果有)运行时检查的连接数量 -->
- <property name="numTestsPerEvictionRun" value="10" />
- <!-- 1000 * 60 * 30 连接在池中保持空闲而不被空闲连接回收器线程 -->
- <property name="minEvictableIdleTimeMillis" value="10000" />
- <property name="validationQuery" value="SELECT NOW() FROM DUAL" />
- </bean>
- <!--Mybatis核心对象-->
- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
- <!-- 注入数据源 -->
- <property name="dataSource" ref="dataSource" />
- <!-- 配置mybatis (mapper)映射器路径 -->
- <property name="mapperLocations" value="classpath*:cn/itsource/crm/mapper/*Mapper.xml" />
- <!-- 配置mybatis 类型别名 -->
- <property name="typeAliasesPackage">
- <value>
- cn.itsource.crm.domain
- Cn.itsource.crm.query
- </value>
- </property>
- </bean>
- <!--注入映射器,一劳永逸的做法-->
- <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
- <property name="basePackage" value="cn.itsource.crm.mapper"></property>
- </bean>
- <!--事务管理-->
- <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
- <property name="dataSource" ref="dataSource"/>
- </bean>
- <!--以注解的方式进行事务管理-->
- <tx:annotation-driven transaction-manager="transactionManager"/>
- </beans><span style="font-family: 宋体; font-size: 10.5pt; background-color: rgb(255, 255, 255);"> </span>
二、Idea+Mybatis Generator自动生成Mybatis代码1 在pom文件中添加Mybatis Generator插件:
代码清单7:
- <plugin>
- <groupId>org.mybatis.generator</groupId>
- <artifactId>mybatis-generator-maven-plugin</artifactId>
- <version>1.3.2</version>
- <configuration>
- <verbose>true</verbose>
- <overwrite>true</overwrite>
- </configuration>
- </plugin>
2 在src/main/resources下创建generatorConfig.xml
代码清单8:
- <?xml version="1.0" encoding="UTF-8"?>
- <!DOCTYPE generatorConfiguration
- PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
- "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
- <generatorConfiguration>
- <classPathEntry location="D:/mysql-connector-java-5.1.42-bin.jar" />
- <context id="test" targetRuntime="MyBatis3Simple">
- <plugin type="org.mybatis.generator.plugins.EqualsHashCodePlugin"></plugin>
- <plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin>
- <plugin type="org.mybatis.generator.plugins.ToStringPlugin"></plugin>
- <commentGenerator>
- <!-- 这个元素用来去除指定生成的注释中是否包含生成的日期 false:表示保护 -->
- <!-- 如果生成日期,会造成即使修改一个字段,整个实体类所有属性都会发生变化,不利于版本控制,所以设置为true -->
- <property name="suppressDate" value="true" />
- <!-- 是否去除自动生成的注释 true:是 : false:否 -->
- <property name="suppressAllComments" value="true" />
- </commentGenerator>
- <!--数据库链接URL,用户名、密码 -->
- <jdbcConnection driverClass="com.mysql.jdbc.Driver"
- connectionURL="jdbc:mysql://localhost:3306/itsource_dms" userId="root" password="123456">
- </jdbcConnection>
- <javaTypeResolver>
- <property name="forceBigDecimals" value="false" />
- </javaTypeResolver>
- <!-- 生成模型的包名和位置 文件夹自己定义-->
- <javaModelGenerator targetPackage="cn.itsource.crm.domain"
- targetProject="src/main/java">
- <property name="enableSubPackages" value="true" />
- <property name="trimStrings" value="true" />
- </javaModelGenerator>
- <!-- 生成映射文件的包名和位置 文件夹自己定义-->
- <sqlMapGenerator targetPackage="cn.itsource.crm.mapper"
- targetProject="src/main/resources">
- <property name="enableSubPackages" value="true" />
- </sqlMapGenerator>
- <!-- 生成DAO的包名和位置 文件夹自己定义-->
- <javaClientGenerator type="XMLMAPPER"
- targetPackage="cn.itsource.crm.mapper" targetProject="src/main/java">
- <property name="enableSubPackages" value="true" />
- </javaClientGenerator>
- <!-- 要生成哪些表 -->
- <table tableName="t_employee" domainObjectName="Employee"></table>
- </context>
- </generatorConfiguration>
3 执行生成代码
点击run->Edit configurations
三、集成Mybatis分页插件1 pom添加依赖
代码清单9:
- <!--mybatis分页插件-->
- <dependency>
- <groupId>com.github.pagehelper</groupId>
- <artifactId>pagehelper</artifactId>
- <version>4.1.4</version>
- </dependency>
2 Mybatis分页插件的配置
在applicationContext的sqlSessionFactory中配置属性
代码清单10:
- <property name="plugins">
- <array>
- <bean class="com.github.pagehelper.PageHelper">
- <property name="properties">
- <value>
- <!-- 你使用的数据库类型 -->
- dialect=mysql
- reasonable=true
- </value>
- </property>
- </bean>
- </array>
- </property>
3 分页插件的使用
代码清单11:
- //执行查询所有之前设置分页条件
- Page page = PageHelper.startPage(1, 10);
- //查询所有数据,返回的是分页后的数据
- List<Employee> list = employeeService.getAll();
- for(Employee e:list){
- System.out.println(e);
- }
- //获取总条目数
- System.out.println(page.getTotal());
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