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Gradle 构建ssm（spring +springmvc+mybatis）项目创建Gradle项目添加springmvc框架添加mybatis generator框架添加mybatis框架编写一个测试采坑批注附

Gradle 构建ssm（spring +springmvc+mybatis）项目

使用 intellij idea 2018.2集成 mybatis Generator，逆向生成entity，mapper，mappingmybatis框架spring mvc框架Gradle 管理

创建Gradle项目

1.创建gradle项目：File->New->Project

先给出项目结构避免不知道配置文件创建何处

添加springmvc框架

1.添加依赖

//spring依赖 compile 'org.springframework:spring-webmvc:5.1.1.RELEASE' compile 'org.springframework:spring-beans:5.1.1.RELEASE' compile 'org.springframework:spring-context:5.1.1.RELEASE' compile 'org.springframework:spring-context-support:5.1.1.RELEASE' compile 'org.springframework:spring-web:5.1.1.RELEASE' compile 'org.springframework:spring-tx:5.1.1.RELEASE' compile 'org.springframework:spring-jdbc:5.1.1.RELEASE' compile 'org.springframework:spring-test:5.1.1.RELEASE' resource添加配置文件applicationContext.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" 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"> <!--Spring会去自动扫描base-package的值所表示的包的位置中的java文件，如果扫描到有@Component、@Controller、@Service、@Repository等类似注解的类，会将这个类注册为Bean--> <context:component-scan base-package="org.controller"></context:component-scan> <!-- 开启SpringMVC注解模式 --> <mvc:annotation-driven/> <!-- 静态资源默认servlet配置 --> <mvc:default-servlet-handler/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/" /> <property name="suffix" value=".jsp" /> </bean> </beans>

3.配置web.xml

web.xml文件内容：里面涉及到的配置文件将在稍后进行介绍添加。

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <!-- 编码过滤器 --> <filter> <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- web容器启动/停止监听器 --> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <!-- web容器与spring上下文整合的监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Spring和mybatis的配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springConfig/spring-mybatis.xml</param-value> </context-param> <!-- 配置springmvc的前端控制器：dispatcherServlet --> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springConfig/applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 --> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>

3.添加全局spring配置文件 applicationContext.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" 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"> <!--Spring会去自动扫描base-package的值所表示的包的位置中的java文件，如果扫描到有@Component、@Controller、@Service、@Repository等类似注解的类，会将这个类注册为Bean--> <context:component-scan base-package="org.controller"></context:component-scan> <!-- 开启SpringMVC注解模式 --> <mvc:annotation-driven/> <!-- 静态资源默认servlet配置 --> <mvc:default-servlet-handler/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/" /> <property name="suffix" value=".jsp" /> </bean> </beans>

4.在web.xml里配置，主要是以下内容，位置在图片里标注了

<init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springConfig/applicationContext.xml</param-value> </init-param>

添加mybatis generator框架

1 .添加配置文件

在resource资源目录下创建jdbc_config.properties文件 注：可以创建二级目录或者更改文件名，但要保证用到的地方名字保持一致，本项目文件名都是配好的可直接使用，更改文件名时请注意搜索一下引用，用到的包名需要一致，具体可查看目录结构。 # MySQL 驱动 jdbc.driverClassName = com.mysql.jdbc.Driver # JDBC URL jdbc.url =jdbc:mysql://127.0.0.1:3306/myproject?useUnicode:true&characterEncoding:UTF-8 # 数据库用户名及密码 jdbc.username = root jdbc.password = 123456 # 实体类所在包 package.model = org.mybatis.entity # mapper 所在包 package.mapper = org.mybatis.mapper # mapper xml 文件所在包 默认存储在 resources 目录下 package.xml = mybatis/mapping # 初始化连接大小 initialSize=0 # 连接池最大数量 maxActive=20 # 连接池最大空闲 maxIdle=20 # 连接池最小空闲 minIdle=1 # 获取连接最大等待时间 maxWait=60000 resource目录下创建generatorConfig.xml配置文件 注意包名一致 <?xml version="1.0" encoding="UTF-8"?> <!--配置文件详解https://www.cnblogs.com/ygjlch/p/6471924.html--> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <!-- context:生成一组对象的环境 id:必选，上下文id，用于在生成错误时提示 defaultModelType:指定生成对象的样式 1，conditional：类似hierarchical； 2，flat：所有内容（主键，blob）等全部生成在一个对象中； 3，hierarchical：主键生成一个XXKey对象(key class)，Blob等单独生成一个对象，其他简单属性在一个对象中(record class) targetRuntime: 1，MyBatis3：默认的值，生成基于MyBatis3.x以上版本的内容，包括XXXBySample； 2，MyBatis3Simple：类似MyBatis3，只是不生成XXXBySample； introspectedColumnImpl：类全限定名，用于扩展MBG --> <context id="default" targetRuntime="MyBatis3Simple" defaultModelType="flat" > <!-- 生成的pojo，将implements Serializable --> <plugin type="org.mybatis.generator.plugins.SerializablePlugin"></plugin> <commentGenerator> <!-- 注释生成器（false 开启默认 true关闭） --> <property name="suppressAllComments" value="true"></property> <!-- 注释生成器时间显示（false 开启默认 true关闭） --> <property name="suppressDate" value="true"></property> <!-- java 文件编码格式 --> <property name="javaFileEncoding" value="utf-8"/> <!--格式化java代码--> <property name="javaFormatter" value="org.mybatis.generator.api.dom.DefaultJavaFormatter"></property> <!-- 格式化XML代码 --> <property name="xmlFormatter" value="org.mybatis.generator.api.dom.DefaultXmlFormatter"/> </commentGenerator> <!-- jdbc 连接信息 --> <jdbcConnection driverClass="${driverClass}" connectionURL="${connectionURL}" userId="${userId}" password="${password}"> </jdbcConnection> <!-- 定义java类型解析器的属性 --> <javaTypeResolver> <property name="forceBigDecimals" value="false"/> </javaTypeResolver> <!-- 实体类所在包名 --> <javaModelGenerator targetPackage="${modelPackage}" targetProject="${src_main_java}"> <property name="enableSubPackages" value="true"></property> <property name="trimStrings" value="true"></property> </javaModelGenerator> <!-- 生成映射文件配置 xml 所在包名 --> <sqlMapGenerator targetPackage="${sqlMapperPackage}" targetProject="${src_main_resources}"> <property name="enableSubPackages" value="true"></property> </sqlMapGenerator> <!-- type= ANNOTATEDMAPPER 表示不生成xml文件 这里我用 XMLMAPPER --> <!-- org.mapper 所在包名 --> <javaClientGenerator targetPackage="${mapperPackage}" targetProject="${src_main_java}" type="XMLMAPPER"> <property name="enableSubPackages" value="true"/> </javaClientGenerator> <!-- 要生成的表 --> <!-- 这里的百分号代表对该数据库中所有的表进行生成 --> <table tableName="%"> <generatedKey column="id" sqlStatement="Mysql" identity="true"/> </table> <!--<table tableName="city" domainObjectName="City" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table> --> </context> </generatorConfiguration>

2.添加依赖

configurations { mybatisGenerator } dependencies{ // mybatis-generator mybatis逆向 mybatisGenerator 'org.mybatis.generator:mybatis-generator-core:1.3.7' mybatisGenerator 'mysql:mysql-connector-java:5.1.45' mybatisGenerator 'tk.mybatis:mapper:4.0.4' } def getDbProperties = { def properties = new Properties() file("src/main/resources/myBatisGenerator/jdbc_config.properties").withInputStream { inputStream -> properties.load(inputStream) } properties } task mybatisGenerator << { def properties = getDbProperties() ant.properties['targetProject'] = projectDir.path ant.properties['driverClass'] = properties.getProperty("jdbc.driverClassName") ant.properties['connectionURL'] = properties.getProperty("jdbc.url") ant.properties['userId'] = properties.getProperty("jdbc.username") ant.properties['password'] = properties.getProperty("jdbc.password") ant.properties['src_main_java'] = sourceSets.main.java.srcDirs[0].path ant.properties['src_main_resources'] = sourceSets.main.resources.srcDirs[0].path ant.properties['modelPackage'] = properties.getProperty("package.model") ant.properties['mapperPackage'] = properties.getProperty("package.mapper") ant.properties['sqlMapperPackage'] = properties.getProperty("package.xml") ant.taskdef( name: 'mbgenerator', classname: 'org.mybatis.generator.ant.GeneratorAntTask', classpath: configurations.mybatisGenerator.asPath ) ant.mbgenerator(overwrite: true, configfile: 'src/main/resources/myBatisGenerator/generatorConfig.xml', verbose: true) { propertyset { propertyref(name: 'targetProject') propertyref(name: 'userId') propertyref(name: 'driverClass') propertyref(name: 'connectionURL') propertyref(name: 'password') propertyref(name: 'src_main_java') propertyref(name: 'src_main_resources') propertyref(name: 'modelPackage') propertyref(name: 'mapperPackage') propertyref(name: 'sqlMapperPackage') } } }

3.配置完成后生成文件

添加mybatis框架

1.添加依赖

dependencies{ //mybatis依赖 compile 'org.mybatis:mybatis:3.4.6' //mysql依赖 compile 'mysql:mysql-connector-java:5.1.45' //mybatis-spring整合 compile 'org.mybatis:mybatis-spring:1.3.2' }

2.resource目录下添加配置文件spring-mybatis.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:p="http://www.springframework.org/schema/p" 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-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 自动扫描 --> <context:component-scan base-package="org.mybatis.mapper" /> <!-- 引入配置文件 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:myBatisGenerator/jdbc_config.properties" /> </bean> <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" 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}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="${initialSize}"></property> <!-- 连接池最大数量 --> <property name="maxActive" value="${maxActive}"></property> <!-- 连接池最大空闲 --> <!-- <property name="maxIdle" value="${maxIdle}"></property> --> <!-- 连接池最小空闲 --> <property name="minIdle" value="${minIdle}"></property> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="${maxWait}"></property> </bean> <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:mybatis/mapping/*.xml"></property> </bean> <!-- DAO接口所在包名，Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="org.mybatis.mapper" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans>

3.web.xm里配置读取配置

<!-- Spring和mybatis的配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springConfig/spring-mybatis.xml</param-value> </context-param>

编写一个测试

已经生成mapper，entity，mapping等创建一个UserController /* Created by IntelliJ IDEA. User: Long Date: 2018/10/24 Time: 11:30 To change this template use File | Settings | File Templates. */ package org.controller; import org.mybatis.entity.User; import org.mybatis.mapper.UserMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import java.util.List; @RestController public class UserController { @Autowired private UserMapper userMapper; @RequestMapping(value = "/insert", produces={"application/json; charset=UTF-8"}) @ResponseBody public String insertUser() { User user = new User(); user.setEmail("sssssasas"); user.setPassword("44555"); user.setSex("sss"); userMapper.insert(user); return user.toString(); } @RequestMapping(value = "/findAll",produces={"application/json; charset=UTF-8"}) public List<User> findAll() { return userMapper.selectAll(); } }

采坑批注

如果没有引入 mybatis和spring的整合包 compile 'org.mybatis:mybatis-spring:1.3.2'会出现错误，在 测试时会出现： org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type

-解决方式： 引入依赖，并正确配置spring-mybatis.xml文件

附

mybatis配置官方网站

spring注解解析

依赖搜索网站