maven
1.创建maven工程
A.groupid:分组
B.artifactid:项目名称
C.version:版本号
ABC组成坐标
2.选中自己的maven版本
3.Add Maven Property
Name:archetypeCatalog
Value:internal
generating project in batch mode 很慢,是应为maven获取archetype-catalog.xml导致
用浏览器打开http://repo1.maven.org/maven2/archetype-catalog.xml很慢
添加Add Maven Property目的是为了解决上述问题,让maven加载本地配置就行。
4.工程创建完成后进入界面需要点击右下角的
Enable Auto-Import 让他自动的导入插件
5.补充文件夹
src 下有main和test
main下有java(标记成Sources),resource(Resources),webapp
test下有java和testresource
java(标记成test Sources)
testresource(标记成test resources)
6.所有的xml文件都要放到资源目录下
7.创建完成
准备工作
1.在pom.xml中关联所需jar包代码段
<?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>com.yb</groupId>
<artifactId>ssmMavenCopy</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>ssmMavenCopy Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<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>
<!--定义版本号 ${org.springframework.version}-->
<org.springframework.version>5.0.7.RELEASE</org.springframework.version>
<org.mybatis.version>3.4.6</org.mybatis.version>
</properties>
<dependencies>
<!--单元测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.6</version>
</dependency>
<!-- servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!--mysql驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
<!-- druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.14</version>
</dependency>
<!-- common-lang -->
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<!--spring-test-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework.version}</version>
<scope>test</scope>
</dependency>
<!--spring-core-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-context-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-context-support-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-expression-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-jdbc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-tx-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-web-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-aop-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--spring-webmvc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!-- aspectj -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.7.4</version>
</dependency>
<!--aspectj weaver-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.7.4</version>
</dependency>
<!-- cglib -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.1</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${org.mybatis.version}</version>
</dependency>
<!--mybatis-spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
<!--出现这个错误时rg.mybatis.spring.transaction.SpringManagedTransaction.getTimeout()Ljava/lang/Integer;
把是因为版本太低了
-->
</dependency>
<!-- jackson-core -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.4</version>
</dependency>
<!--jackson-databind-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>
<!--jackson-annotations-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.4</version>
</dependency>
<!--slf4j-api-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.6</version>
</dependency>
<!--slf4j-log4j12-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.6</version>
</dependency>
<!--log4j-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!--commons-fileupload-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<!-- jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- standard -->
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<!--pagehelper-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.1.4</version>
</dependency>
</dependencies>
<build>
<finalName>ssmMavenCopy</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>3.1.0</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>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</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>
</plugins>
</pluginManagement>
</build>
</project>
2.加入ssm相关的配置文件
Spring:applicationContext.xml
SpringMVC:application-mvc.xml
mybatis:application-mybatis.xml , sqlMapConfig.xml
数据库的db.properties
日志文件的log4j.properties
spring-springMVC
1.在web.xml中配置前段控制器
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0"
metadata-complete="false">
<absolute-ordering/>
<display-name>web</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!--配置前端控制器-->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--加载的主配置文件-->
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<!-- 项目启动就加载框架 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- form表单编码过滤器 -->
<filter>
<filter-name>CharacterEncoding</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>CharacterEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
2.配置application-mvc.xml
<mvc:annotation-driven />
<!--静态资源处理 -->
<mvc:default-servlet-handler/>
<!--视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp" />
</bean>
3.在applicationContext.xml中引入application-mvc.xml
<!--导入springMVC-->
<import resource="classpath:application-mvc.xml"/>
spring-mybatis
1.配置application-mybatis.xml
<!--注解扫描-->
<context:component-scan base-package="com.yb"/>
<!--spring-Mybatis整合-->
<!--加载数据库属性文件-->
<context:property-placeholder location="classpath:db.properties"/>
<!--连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<!--属性文件当中的名称不能和name名称一样-->
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 开启注解事务 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!-- Mybatis的工厂 -->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- 核心配置文件的位置 -->
<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
<!-- <!–配置mapper映射文件的路径–>
<property name="mapperLocations" value="classpath:com.yb.mapper/*Mapper.xml"/>-->
</bean>
<!-- 配置Mapper接口扫描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置Mapper xml文件扫描包 -->
<property name="basePackage" value="com.yb.mapper" />
</bean>
2.在applicationConntext.xml中引入application-mybatis.xml
<!--导入mybatis-->
<import resource="classpath:application-mybatis.xml"/>
插件
代码生成器:mybatis-generator
1.导入插件代码到pom.xml中(不能写到默认的pubginManagement可能会不生效,自己写一个plugsins)
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<verbose>true</verbose>
<overwrite>false</overwrite>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
</dependencies>
</plugin>
</plugins>
2.导入generatorConfig.xml文件
<?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">
<!-- 配置生成器 -->
<generatorConfiguration>
<context id="mysql" defaultModelType="hierarchical"
targetRuntime="MyBatis3Simple">
<!-- 自动识别数据库关键字,
默认false,如果设置为true,
根据SqlReservedWords中定义的关键字列表;
一般保留默认值,
遇到数据库关键字(Java关键字),
使用columnOverride覆盖 -->
<property name="autoDelimitKeywords" value="false" />
<!-- 生成的Java文件的编码 -->
<property name="javaFileEncoding" value="UTF-8" />
<!-- 格式化java代码 -->
<property name="javaFormatter"
value="org.mybatis.generator.api.dom.DefaultJavaFormatter" />
<!-- 格式化XML代码 -->
<property name="xmlFormatter"
value="org.mybatis.generator.api.dom.DefaultXmlFormatter" />
<!-- beginningDelimiter和endingDelimiter:指明数据库的用于标记数据库对象名的符号,
比如ORACLE就是双引号,MYSQL默认是`反引号; -->
<property name="beginningDelimiter" value="`" />
<property name="endingDelimiter" value="`" />
<!--阻止生成日期和注释-->
<commentGenerator>
<property name="suppressDate" value="true" />
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!-- 数据库连接信息 -->
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC"
userId="root" password="123456">
<property name ="nullCatalogMeansCurrent" value = "true"/>
</jdbcConnection>
<!-- java类型处理器 用于处理数据库中的类型到Java中的类型,
默认使用JavaTypeResolverDefaultImpl;
注意一点,默认会先尝试使用Integer,Long,Short等来对应DECIMAL和
NUMERIC数据类型; -->
<javaTypeResolver
type="org.mybatis.generator.internal.types.JavaTypeResolverDefaultImpl">
<!-- true:使用BigDecimal对应DECIMAL和 NUMERIC数据类型 f
alse:默认, scale>0;length>18:使用BigDecimal;
scale=0;length[10,18]:使用Long; scale=0;length[5,9]:
使用Integer; scale=0;length<5:使用Short; -->
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!--
配置domain生成策略
targetProject:把自动生成的domian放在哪个工程里面
targetPackage:哪个包下
-->
<javaModelGenerator targetPackage="com.yb.domain"
targetProject="src/main/java">
<!-- for MyBatis3/MyBatis3Simple
自动为每一个生成的类创建一个构造方法,
构造方法包含了所有的field;而不是使用setter; -->
<property name="constructorBased" value="false" />
<!-- for MyBatis3 / MyBatis3Simple
是否创建一个不可变的类,如果为true,
那么MBG会创建一个没有setter方法的类,
取而代之的是类似constructorBased的类 -->
<property name="immutable" value="false" />
<!-- 设置是否在getter方法中,
对String类型字段调用trim()方法 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!--
配置mapper.xml的生成策略
targetPackage:把自动生成的mapper放在哪个工程里面
targetProject:哪个包下
-->
<sqlMapGenerator targetPackage="com.yb.mapper"
targetProject="src/main/java">
<!-- 在targetPackage的基础上,
根据数据库的schema再生成一层package,
最终生成的类放在这个package下,默认为false -->
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!--
mapper接口生成策略
-->
<javaClientGenerator targetPackage="com.yb.mapper"
type="XMLMAPPER" targetProject="src/main/java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<table schema="mybatis" tableName="teacher" domainObjectName="Teacher"></table>
</context>
</generatorConfiguration>
mysql8.x的数据库需要配置:
在jdbcConnection中加入
否则生成的文件会出错(由于8.x的数据库会默认将所有的查找一遍)
<!--对应数据库的表和生成的domain名-->
<table schema="mybatis" tableName="teacher" domainObjectName="Teacher"></table>
测试
创建一个form表单,尝试将文本框里的数据插入到数据库中
注意点
1.要将生成的mapper.xml文件放到resources资源目录下
在resources下再创建一个同名的文件夹
2.在application-mybatis.xml中要配置一下mapper.xml文件的路径
<!-- Mybatis的工厂 -->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- 核心配置文件的位置 -->
<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
<!--配置mapper映射文件的路径-->
<property name="mapperLocations" value="classpath:com.yb.mapper/*Mapper.xml"/>
</bean>