配置maven
-
一定要改为war
<packaging>war</packaging>
否则出现的错误:
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoa
-
配置依赖
<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.1.Final</version>
</dependency>
<!-- hibernate-validator支持JSR303数据校验 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!--spring框架-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.3.14</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.14</version>
</dependency>
<!-- Spring-Jdbc -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.14</version>
</dependency>
<!--Spring-test -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.3.14</version>
</dependency>
<!--文件的上传和下载-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
<!-- 日志 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
</dependency>
<!-- ServletAPI -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!--jsp的标签库-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- Spring5和Thymeleaf整合包 -->
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring5</artifactId>
<version>3.0.12.RELEASE</version>
</dependency>
<!--将Java代码解析成json-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.12.1</version>
</dependency>
<!--alibabaDruid-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.3</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<!--mybatisspring的适配包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.2.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.25</version>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<!--ehcache-->
<dependency>
<groupId>org.mybatis.caches</groupId>
<artifactId>mybatis-ehcache</artifactId>
<version>1.2.1</version>
</dependency>
</dependencies>
数据库
配置数据库信息
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=url=jdbc:mysql://localhost:3306/test?serverTimezone=UTC&?useUnicode=true&characterEncoding=utf8&useSSL=false
jdbc.username=root
jdbc.password=123456
配置mgb文件
- 数据源,生成注解相关的设置,实体类,SQL映射文件,映射接口
<?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>
<!--
targetRuntime="MyBatis3Simple":生成简单版的CRUD
"MyBatis3":豪华版
-->
<properties resource="jdbc.properties"/>
<context id="DB2Tables" targetRuntime="MyBatis3">
<!--去掉注解-->
<commentGenerator>
<property name="suppressAllComments" value="true"/>
<property name="suppressDate" value="true"/>
</commentGenerator>
<!-- jdbcConnection:指定如何连接到目标数据库 -->
<jdbcConnection driverClass="${jdbc.driver}"
connectionURL="${jdbc.url}"
userId="${jdbc.username}"
password="${jdbc.password}">
</jdbcConnection>
<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- javaModelGenerator:指定javaBean的生成策略
targetPackage="test.model":目标包名
targetProject="\MBGTestProject\src":目标工程
-->
<javaModelGenerator targetPackage="com.beyondzy.bean"
targetProject="src/main/java">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- sqlMapGenerator:sql映射生成策略: -->
<sqlMapGenerator targetPackage="mappers"
targetProject="src/main/resources">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!-- javaClientGenerator:指定mapper接口所在的位置 -->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.beyondzy.dao"
targetProject="src/main/java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!-- 指定要逆向分析哪些表:根据表要创建javaBean -->
<table tableName="tbl_dept" domainObjectName="Department"></table>
<table tableName="tbl_stu" domainObjectName="Student"></table>
</context>
</generatorConfiguration>
- 使用测试类生成代码
public void test1(){
try {
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
File configFile = new File(mbg.class.getClassLoader().getResource("mgb.xml").getFile());
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
myBatisGenerator.generate(null);
} catch (Exception e) {
e.printStackTrace();
}
}
配置mybatis信息
<?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">
<!--环境配置-->
<configuration>
<settings>
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!--开启缓存-->
<setting name="cacheEnabled" value="true"/>
</settings>
<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor">
<!--分页参数合理化 -->
<property name="reasonable" value="true"/>
</plugin>
</plugins>
</configuration>
配置spring配置文件
<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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--配置spring
包括数据源,事务控制,xxx-->
<!--数据源控制-->
<context:component-scan base-package="com.beyondzy">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>
<bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!--配置和mybatis的整合-->
<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis.xml"></property>
<property name="dataSource" ref="druidDataSource"></property>
<property name="mapperLocations" value="classpath:mappers/empMapper.xml"></property>
</bean>
<!--配置扫描器,将mybatis接口的实现加到IOC容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--扫描所有实现dao的接口-->
<property name="basePackage" value="com.beyondzy.dao"></property>
</bean>
<!--事务控制器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="druidDataSource"></property>
</bean>
<!-- 配置一个可以执行批量的sqlSession -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory" ref="sessionFactory"></constructor-arg>
<constructor-arg name="executorType" value="BATCH"></constructor-arg>
</bean>
<!--aop--->
<!--事务增强-->
</beans>
springmvc
-
配置springmvc
- 扫描@controller
- 开启注解驱动
- 开启默认处理器
- 视图解析器
<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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--只对包含controller的注解进行扫描-->
<context:component-scan base-package="com.beyondzy">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--配置视图解析器,方便页面返回 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--两个标准配置 -->
<!-- 将springmvc不能处理的请求交给tomcat -->
<mvc:default-servlet-handler/>
<!-- 能支持springmvc更高级的一些功能,JSR303校验,快捷的ajax...映射动态请求 -->
<mvc:annotation-driven/>
</beans>
目录结构
- webapp在main中