记录一次配置Maven+Spring+SpringMVC+Mybatis Generate+MySQL
配置Spring+SpringMVC+Mybatis Generate，对MySQL数据库里的的 t_user 表进行简单查询
搭建完成后的目录结构
先创建Maven的web项目（此处省略不写）
给Maven的pom.xml中导包，配置Tomcat7插件
里面引用了nexus私服仓库，里面有我自己上传的包。如果系统找不到可以手动添加。
<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.sxt</groupId>
<artifactId>Maven-MyBatisGenerate-Spring-SpringMVC-CRUD</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<spirng.version>4.3.3.RELEASE</spirng.version>
</properties>
<dependencies>
<!-- 因为是web项目所以需要servlet -->
<!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!-- 1.和springMvc相关的jar包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spirng.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>com.sxt</groupId>
<artifactId>jquery</artifactId>
<version>2.2.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.27</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spirng.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spirng.version}</version>
</dependency>
<!-- mybatis依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- mybatis和spring整合包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- 日志框架 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context-support -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spirng.version}</version>
</dependency>
<dependency>
<groupId>com.sxt</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.10.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>1.6.6</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- tomcat插件 -->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<!-- 端口号 -->
<port>8082</port>
<!-- /表示访问路径 省略项目名 -->
<path>/</path>
<!-- 设置编码方式 -->
<uriEncoding>utf-8</uriEncoding>
</configuration>
</plugin>
</plugins>
</build>
<!-- 配置上传私服路径 -->
<distributionManagement>
<repository>
<id>mgss</id>
<url>http://localhost:8081/nexus/content/repositories/mybatisGenerateSpringSpringMVC/</url>
</repository>
<snapshotRepository>
<id>snapshots</id>
<url>http://localhost:8081/nexus/content/repositories/snapshots/</url>
</snapshotRepository>
</distributionManagement>
</project>
这个是MySQL里的t_user表结构
1、配置mybatis-generate.xml逆向工程文件
// An highlighted block
<?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>
<!-- 数据库的驱动包的本地路径 -->
<classPathEntry location="G:\mysql-connector-java-5.1.27.jar" />
<context id="DB2Tables" targetRuntime="MyBatis3">
<!-- 去掉生成文件中的注释 -->
<commentGenerator>
<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/demo?characterEncoding=utf-8"
userId="root"
password="1234">
</jdbcConnection>
<!-- <jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver"
connectionURL="jdbc:oracle:thin:@localhost:1521:XE"
userId="car"
password="car">
</jdbcConnection> -->
<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- 生成模型的包名和位置 -->
<javaModelGenerator targetPackage="com.sxt.model" targetProject="Maven-MyBatisGenerate-Spring-SpringMVC-CRUD\src\main\java">
<!-- 是否在当前路径下新加一层schema,eg：fase路径com.oop.eksp.user.model， true:com.oop.eksp.user.model.[schemaName] -->
<property name="enableSubPackages" value="false" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- 生成的映射文件包名和位置 -->
<sqlMapGenerator targetPackage="mapper" targetProject="Maven-MyBatisGenerate-Spring-SpringMVC-CRUD\src\main\resources">
<property name="enableSubPackages" value="false" />
</sqlMapGenerator>
<!-- 生成DAO的包名和位置 -->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.sxt.mapper" targetProject="Maven-MyBatisGenerate-Spring-SpringMVC-CRUD\src\main\java">
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<table tableName="t_user" domainObjectName="UserBean" >
</table>
</context>
</generatorConfiguration>
2、配置mybatis-cfg.xml文件，开启延迟加载
// An highlighted block
<?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">
<configuration>
<settings>
<!-- 开启延迟加载 -->
<setting name="lazyLoadingEnabled" value="true"/>
<setting name="aggressiveLazyLoading" value="false"/>
</settings>
</configuration>
3、配置db.properties文件，MySQL数据连接相关信息
# mysql
driverClass=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/demo?characterEncoding=utf-8
usernames=root
password=1234
4、配置log4j.properties文件，启用日志管理
log4j.rootCategory=DEBUG, stdout , R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[QC] %p [%t] %C.%M(%L) | %m%n
log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File=G:\\javalog\\sxt.log ###表示将生成的日志内容保存在G盘自定义的一个sxt.log文件里###
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d-[TS] %p %t %c - %m%n
5、配置applicationContext.xml文件，与Spring相关
<?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"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
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/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 扫描service、dao组件 -->
<context:component-scan base-package="com.sxt" />
<!-- 分解配置 db.properites -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 数据源mysql
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${driverClass}" />
<property name="url" value="${url}" />
<property name="username" value="${usernames}" />
<property name="password" value="${password}" />
</bean> -->
<!-- 配置c3p0连接池数据源 -->
<bean class="com.mchange.v2.c3p0.ComboPooledDataSource"
id="dataSource" >
<property name="driverClass" value="${driverClass}"></property>
<property name="jdbcUrl" value="${url}"></property>
<!-- username是系统变量 注意在db.properties中不要使用 -->
<property name="user" value="${usernames}"></property>
<property name="password" value="${password}"></property>
</bean>
<!-- sessionFactory 将spring和mybatis整合 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:mybatis-cfg.xml" />
<property name="mapperLocations" value="classpath:mapper/*.xml" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.sxt.mapper" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!--配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="append*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="modify*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="repair" propagation="REQUIRED" />
<tx:method name="delAndRepair" propagation="REQUIRED" />
<tx:method name="get*" propagation="SUPPORTS" />
<tx:method name="find*" propagation="SUPPORTS" />
<tx:method name="load*" propagation="SUPPORTS" />
<tx:method name="search*" propagation="SUPPORTS" />
<tx:method name="datagrid*" propagation="SUPPORTS" />
<tx:method name="*" propagation="SUPPORTS" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="transactionPointcut" expression="execution(* com.sxt.service..*impl.*(..))" />
<aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />
</aop:config>
</beans>
6、配置spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
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-4.3.xsd">
<!-- 默认的注解映射的支持 -->
<mvc:annotation-driven />
<!-- 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="com.sxt.controller" />
<!-- 定义跳转的文件的前后缀 ，视图模式配置 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" /> -->
</bean>
<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包
<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" /> -->
<!-- 内存中的最大值
<property name="maxInMemorySize" value="40960" />
</bean> -->
</beans>
7、利用Mybatis Generate自动生成model层和DAO层
如果Eclipse装了Mybatis generate 插件，就可以对mybatis-generate.xml按右键，执行逆向工程生成model层和DAO层代码。
8、自己添加service层和controller层代码
IUserService.java的代码如下：
package com.sxt.service;
import com.sxt.model.UserBean;
public interface IUserService {
public UserBean queryById(Integer id);
}
UserServiceImpl.java的代码如下：目前只有一个根据用户id查找User信息的方法
package com.sxt.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.sxt.mapper.UserBeanMapper;
import com.sxt.model.UserBean;
import com.sxt.model.UserBeanExample;
import com.sxt.service.IUserService;
@Service
public class UserServiceImpl implements IUserService {
@Autowired
private UserBeanMapper mapper;
@Override
public UserBean queryById(Integer id) {
return mapper.selectByPrimaryKey(id);
}
}
控制层UserController.java的代码如下：
package com.sxt.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import com.sxt.model.UserBean;
import com.sxt.service.impl.UserServiceImpl;
@Controller
public class UserController {
@Autowired
private UserServiceImpl serviceImpl;
@RequestMapping("/queryById")
public String queryById(Integer id,Model model) {
UserBean bean=serviceImpl.queryById(id);
System.out.println(bean);
model.addAttribute("u", bean);
return "/test.jsp";
}
}
9、在test.jsp展示查询结果
查询页面为test.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="js/jquery.min.js"></script>
<title>Maven项目测试页面</title>
</head>
<body>
<h1>Hello World</h1>
<form action="queryById" method="get">
请输入用户id：<input type="number" name="id"> <input type="submit"
value="提交">
</form>
<h2>${u.id}</h2>
<h2>${u.name}</h2>
<h2>${u.age}</h2>
<h2>${u.games}</h2>
</body>
</html>
10、启动Tomcat7服务器
对着项目点右键，选中如下运行方式
然后加上运行参数 tomcat7:run，然后点击run运行
11、在前端输入用户id：3，查询到数据
用户id：3，姓名：小sd，年龄：23
12、参考资料
https://www.jb51.net/article/130560.htm 《详解手把手Maven搭建SpringMVC+Spring+MyBatis框架》
https://blog.csdn.net/qq_38526573/column/info/33285 《mybatis专栏》