1.导包pom.xml
<?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.ssm</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm 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>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<org.springframework.version>4.2.5.RELEASE</org.springframework.version>
<org.hibernate.version>4.3.8.Final</org.hibernate.version>
<spring-data-jpa.version>1.9.0.RELEASE</spring-data-jpa.version>
<com.fasterxml.jackson.version>2.5.0</com.fasterxml.jackson.version>
</properties>
<dependencies>
<!-- Spring的支持包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework.version}</version>
<scope>test</scope>
</dependency>
<!-- 引入web前端的支持 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!-- SpringMCV上传需要用到io包-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<!-- 文件上传用到的包 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2.2</version>
</dependency>
<!-- SpringMVC的json支持包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${com.fasterxml.jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${com.fasterxml.jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${com.fasterxml.jackson.version}</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.5</version>
</dependency>
<!-- 測試包 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<!-- 这个scope 只能作用在编译和测试时，同时没有传递性。表示在运行的时候不添加此jar文件 -->
<scope>provided</scope>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<!--mybatis-->
<!--mybatis的核心包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.1</version>
</dependency>
<!--mybatis集成spring的框架-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<!--
日志包
-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.2</version>
</dependency>
<!--mybatis的代码生成器的核心包-->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<!--
jar包导入
-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.1</version>
</dependency>
</dependencies>
<build>
<finalName>ssm</finalName>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<verbose>false</verbose>
<overwrite>true</overwrite>
</configuration>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<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>
</build>
</project>
2.搭建结构
3.配置相关配置文件
1.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: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
">
<!--1.引入jdbc.properties文件-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--2.扫包:非Controller层-->
<!--service层的扫描-->
<context:component-scan base-package="cn.itsource.ssm.wy.service"/>
<!-- 3.配置连接池-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<!--连接数据4个属性 -->
<property name="driverClassName" value="${jdbc.driver}"/>
<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"/>
<!-- 用来配置数据库断开后自动连接的 -->
<!-- 连接被泄露时是否打印 -->
<property name="logAbandoned" value="true"/>
<!--removeAbandoned: 是否自动回收超时连接 -->
<property name="removeAbandoned" value="true"/>
<!--removeAbandonedTimeout: 超时时间(以秒数为单位) -->
<property name="removeAbandonedTimeout" value="10"/>
<!--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>
<!--4.mybatis-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--dataSource-->
<property name="dataSource" ref="dataSource" />
<!--private String typeAliasesPackage; 别名的配置-->
<property name="typeAliasesPackage" value="cn.itsource.ssm.wy.domain"/>
<!--private Resource[] mapperLocations;:mapper映射的配置-->
<property name="mapperLocations" value="classpath*:cn/itsource/ssm/wy/mapper/*.xml" />
<!--lau UI分页插件-->
<property name="plugins" >
<array>
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<value>helperDialect=mysql</value>
</property>
</bean>
</array>
</property>
</bean>
<!--5.mapper接口的配置:
配置了这个mapper,以后再service就直接注入这个mapper就可以使用了
这种一个一个的配置,假如你有很多的mapper接口,就很麻烦了
<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="mapperInterface" value="" />
<property name="sqlSessionFactory" ref="sqlSessionFactory" />
</bean> -->
<!--一劳永逸的mapper接口的配置:
直接扫这个mapper接口的包,把这个包下面的所有的类都注册成一个bean,以后在service直接注入就ok
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cn.itsource.ssm.wy.mapper" />
</bean>
<!--6.事务的配置:
事务有两种方式:xml和注解方式(采纳service)
事务管理器:
-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!--
transaction-manager的默认值就是找id="transactionManager";
如果你的事务管理器的id是这个默认值,就可以不用写这个transaction-manager="transactionManager";
否则就要显示指定事务管理器的id值
-->
<tx:annotation-driven />
</beans>
2.applicationContext-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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
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
">
<!-- 静态资源放行
扫包:Controller
mvc注解
统一视图解析器
文件上传 -->
<!-- 1.对静态资源进行放行 -->
<mvc:default-servlet-handler />
<!-- 2.扫描controller部分的包 web controller-->
<!-- @Component组件, @Repository持久层, @Service业务逻辑层, and @Controller控制器 -->
<context:component-scan base-package="cn.itsource.ssm.wy.web.controller" />
<!-- 3.添加mvc对@RequestMapping等注解的支持 -->
<mvc:annotation-driven/>
<!-- 4.视图解析器 (struts2视图类型类似) -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 设置视图路径的前后缀，该配置可以让我们写视图路径的时候更简单。 -->
<!-- 希望跳转jsp是[/WEB-INF/views/前缀][xxx变量][.jsp后缀] -->
<!-- * @see #setPrefix -->
<property name="prefix" value="/WEB-INF/views/" />
<!-- * @see #setSuffix -->
<property name="suffix" value=".jsp" />
</bean>
<!--5.文件上传-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 设置上传文件的最大尺寸为1MB -->
<property name="maxUploadSize">
<value>1048576</value>
</property>
</bean>
</beans>
3.jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql:///smm jdbc.username=root jdbc.password=root
4.log4j.properties
#日志的根级别 # trace,debug,info,warn,error:级别越大,看到的日志信息越少 # 配置的级别,日志效果包含这个级别和以上的日志信息,向看到越多的日志,级别越小 log4j.rootLogger=ERROR, stdout #你自己的包路径:log4j.logger.加你自己的包路径 log4j.logger.cn.itsource.mybatis=TRACE log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n
4.配置web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<!-- 1.告诉spring加载位置-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- 2.配置监听器 目的启动spring配置-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--3.核心控制器:
默认加载在WEB-INF下找servlet-name-servlet.xml:
dispatchServlet-servlet.xml-->
<servlet>
<servlet-name>dispatchServlet</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>dispatchServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
5.代码生成器
1.导包---上面已导（pom.xml红色）
2.配置插件（pom.xml绿色）
3.generatorConfig.xml
<?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">
<!-- 自动生成器的配置(根目录，不做过多介绍)-->
<generatorConfiguration>
<!--
classPathEntry：可以配置多个，也不配置
数据库驱动:这里找到相应的驱动jar包就可以了(注:不同数据库的jar不一样)
location:里面的是路径(也可以直接写绝对路径 -> 如:E:\mybatis\mysql-connector-java-5.1.26-bin.jar)
-->
<classPathEntry location="F:\soft\maven\repository-teacher\mysql\mysql-connector-java\5.1.26\mysql-connector-java-5.1.26.jar"/>
<!--
context：用于生成一组对象的环境(至少配置1个，可以配置多个)
id:表达唯一的名称
targetRuntime：用于指定生成的代码的运行环境(MyBatis3/MyBatis3Simple)
MyBatis3:默认值
MyBatis3Simple：不会生成与Example(案例)相关的方法
-->
<context id="DB2Tables" targetRuntime="MyBatis3Simple" >
<!--
用于配置如果生成注释信息(最多可以配置一下)
suppressAllComments:阻止生成注释 ，默认为false
suppressDate:阻止生成的注释 时间戳，默认为false
addRemarkComments：注释是否添加数据库表的备注信息，默认为false
-->
<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!--
这个应该比较清楚，配置连接数据库的基本信息
-->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql:///smm"
userId="root" password="root">
</jdbcConnection>
<!--
用于指定JDBC类型和Java类型如何转换，最多可以配置一个
forceBigDecimals:控制是否强制将DECIMAL和NUMERIC类型的JDBC字段转换成Java类型的 BigDecimal
默认为false,一般不需要配置
-->
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!--
javaModelGenerator:用来控制生成的实体类
targetPackage：生成Model类存放位置(包名)
targetProject：指定目标项目路径(根目录)
对应的子属性:
trimStrings：判断是否对数据库查询结果进行trim操作(默认false)
-->
<javaModelGenerator targetPackage="cn.itsource.ssm.wy.domain"
targetProject="src\main\java">
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!--
sqlMapGenerator：生成映射文件存放位置(Mapper.xml文件)
targetPackage:生成SQL映射文件(XML文件)在哪个包中
targetProject:指定目标项目路径(根目录)
-->
<sqlMapGenerator targetPackage="cn.itsource.ssm.wy.mapper"
targetProject="src\main\resources">
</sqlMapGenerator>
<!--
javaClientGenerator：Java客户端生成器(生成Dao/Mapper的接口)
该 标签可选(最多配置一个)，如果不配置，就不会生成Mapper接口
type:选择客户端代码生成器
MyBatis3
ANNOTATEDMAPPER：基于注解的Mapper接口，不会有对应的XML映射文件
MIXEDMAPPER:XML和注解混合形式
XMLMAPPER：所有方法都在XML中(接口调用依赖XML)
MyBatis3Simple
ANNOTATEDMAPPER：基于注解的Mapper接口，不会有对应的XML映射文件
XMLMAPPER：所有方法都在XML中(接口调用依赖XML)
targetPackage：生成Mapper接口存放的包名
targetProject：指定目标项目路径
-->
<javaClientGenerator type="XMLMAPPER" targetPackage="cn.itsource.ssm.wy.mapper"
targetProject="src\main\java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<!--
table：生成对应表及类名
tableName：对应表名(注:%代表所有)
domainObjectName:对应的类名
generatedKey：主键自增的id字段(针对当前 数据库配置MySQL)
-->
<!--
多个表:一一写,但是很麻烦的
<table tableName="t_user" domainObjectName="User">
<generatedKey column="id" sqlStatement="MySql" />
</table>
<table tableName="t_employee" domainObjectName="Employee">
<generatedKey column="id" sqlStatement="MySql" />
</table>-->
<!--所有表:
但是生成的domain名字就不能自定义了.
默认就是数据库表的驼峰式命名.
处理:数据不用t.
自己改源码啊.
<table tableName="%" >
<generatedKey column="id" sqlStatement="MySql" />
</table>-->
<table tableName="employee" domainObjectName="Employee">
<generatedKey column="id" sqlStatement="MySql" />
</table>
</context>
</generatorConfiguration>
完成以后，自动生成一个表，测试如下
6.controller
@Controller
@RequestMapping("/department")
public class DepartmentController {
@RequestMapping("/list")
@ResponseBody//返回json数据
public List<Department> list(){
return departmentService.findAll();
}
}
7.测试.访问返回json数据
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