学习了ssm框架后，一直想要自己亲自搭建一个，最近尝试了一下，效果还行，算是一个微型的ssm框架吧。介绍一下，我使用的IDE是idea。
首先，创建一个maven的web工程，如下：
然后点击next,添加groupId,artifactId和version,这个随便起不过groupId表示你的包名，artifactId表示你的项目名，如下：
然后一路next，这里要注意一下，可能有的小伙伴下载maven项目奇慢无比，这是由于如果你没添加任何配置的话，你的maven依赖默认是从中央仓库下载的，而中央仓库在国外，所以慢是可以理解的，那么，有什么可以解决的呢？有，那就是在你的"settings.xml"文件中添加阿里巴巴的镜像即可：如下：
<mirror>
<id>alimaven</id>
<name>aliyun maven</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<mirrorOf>central</mirrorOf>
</mirror>
创建好的maven目录结构如下：
但是我们需要把它配置成标准的maven项目机构，如下：
这里，我们还需要将java标记为源文件，resouces标记为配置文件，如下所示:
然后在pom.xml文件中引入相关的spring的依赖，如下：
<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>
<spring.version>5.0.3.RELEASE</spring.version>
<mybatis.version>3.4.4</mybatis.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- 第一部分：Spring 配置-->
<!-- Spring core -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Spring DAO -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Spring mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 第二部分：Servlet web -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>
<!-- 第三部分：数据库和mybatis -->
<!-- 数据库 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<!-- 数据库连接池 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis-spring整合包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 第四部分：日志 -->
<!-- 实现slf4j接口并整合 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>然后在resources配置中创建如下xml文件：
这里的applicationContext-dataSource.xml文件中添加和数据库相关的配置信息，如下：
<?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">
<!-- 配置数据库相关参数properties的属性：${url} -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxPoolSize" value="${c3p0.maxPoolSize}"/>
<property name="minPoolSize" value="${c3p0.minPoolSize}"/>
<property name="autoCommitOnClose" value="${c3p0.autoCommitOnClose}"/>
<property name="checkoutTimeout" value="${c3p0.checkoutTimeout}"/>
<property name="acquireRetryAttempts" value="${c3p0.acquireRetryAttempts}"/>
</bean>
<!-- 配置SqlSessionFactory对象 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 扫描model包 使用别名 -->
<property name="typeAliasesPackage" value="com.Jevin.domain"/>
<!-- 扫描sql配置文件:mapper需要的xml文件 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
<property name="configurationProperties">
<props>
<prop key="mapUnderscoreToCamelCase">true</prop>
</props>
</property>
</bean>
<!-- 配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描Dao接口包 -->
<property name="basePackage" value="com.Jevin.dao"/>
</bean>
<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置基于注解的声明式事务 -->
<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>那么，就需要配置连接数据库的配置了，我们放在jdbc.properties中，如下：
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/bjpowernode?useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456
#最大连接数
c3p0.maxPoolSize=30000
#最小连接数
c3p0.minPoolSize=10
#关闭连接后不自动commit
c3p0.autoCommitOnClose=false
#获取连接超时时间
c3p0.checkoutTimeout=10000
#当获取连接失败重试次数
c3p0.acquireRetryAttempts=2其中，这里：
是你自己的数据库库名，自己根据自己的情况酌情而定。
然后在applicationContext-springMVC,xml中配置有关springMVC相关的配置信息：
<?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">
<!-- 配置注解驱动 -->
<mvc:annotation-driven />
<!-- 配置视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>再然后，在applicationContext.xml总配置文件中引入其他的配置文件：
<?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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task"
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
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 加载系统配置文件 -->
<context:property-placeholder location="classpath:*.properties" />
<!-- 扫描注解 -->
<context:component-scan base-package="com.Jevin" />
<!-- 导入数据相关配置 -->
<import resource="applicationContext-dataSource.xml" />
<import resource="applicationContext-springMVC.xml" />
</beans>其中mapper中的emp.xml中是写sql的如下：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- 设置为IUserDao接口方法提供sql语句配置 -->
<mapper namespace="com.Jevin.dao.EmpDao">
<resultMap id="BaseResultMap" type="com.Jevin.domain.Emp">
<id column="empno" jdbcType="INTEGER" property="empno" />
<result column="ename" jdbcType="VARCHAR" property="ename" />
<result column="job" jdbcType="VARCHAR" property="job" />
<result column="mgr" jdbcType="INTEGER" property="mgr" />
<result column="hiredate" jdbcType="DATE" property="hiredate" />
<result column="sal" jdbcType="DOUBLE" property="sal" />
<result column="comm" jdbcType="DOUBLE" property="comm" />
<result column="deptno" jdbcType="INTEGER" property="deptno" />
</resultMap>
<select id="getEmp" resultMap="BaseResultMap">
select * from emp;
</select>
</mapper>然后在web.xml文件中配置一些servlet和其他信息：
<?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_3_1.xsd"
version="3.1">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext*.xml</param-value>
<!-- <param-value>classpath:bean/applicationContext.xml</param-value>-->
</init-param>
<load-on-startup>1</load-on-startup>
<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext*.xml</param-value>
</context-param>
<!-- 编码过滤器 -->
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- spring监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 防止spring内存溢出监听器，比如quartz -->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
</web-app>再然后是源文件目录如下：
至于源文件中的内容如下：
首先是domain层：
package com.Jevin.domain;
import java.util.Date;
public class Emp {
private Integer empno;
private String ename;
private String job;
private Integer mgr;
private Date hiredate;
private Double sal;
private Double comm;
private Integer deptno;
public Emp(){};
public Emp(Integer empno, String ename, String job, Integer mgr, Date hiredate, Double sal, Double comm, Integer deptno) {
this.empno = empno;
this.ename = ename;
this.job = job;
this.mgr = mgr;
this.hiredate = hiredate;
this.sal = sal;
this.comm = comm;
this.deptno = deptno;
}
public Integer getEmpno() {
return empno;
}
public void setEmpno(Integer empno) {
this.empno = empno;
}
public String getEname() {
return ename;
}
public void setEname(String ename) {
this.ename = ename;
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
public Integer getMgr() {
return mgr;
}
public void setMgr(Integer mgr) {
this.mgr = mgr;
}
public Date getHiredate() {
return hiredate;
}
public void setHiredate(Date hiredate) {
this.hiredate = hiredate;
}
public Double getSal() {
return sal;
}
public void setSal(Double sal) {
this.sal = sal;
}
public Double getComm() {
return comm;
}
public void setComm(Double comm) {
this.comm = comm;
}
public Integer getDeptno() {
return deptno;
}
public void setDeptno(Integer deptno) {
this.deptno = deptno;
}
@Override
public String toString() {
return "Emp{" +
"empno=" + empno +
", ename='" + ename + '\'' +
", job='" + job + '\'' +
", mgr=" + mgr +
", hiredate=" + hiredate +
", sal=" + sal +
", comm=" + comm +
", deptno=" + deptno +
'}';
}
}
然后是dao层:
package com.Jevin.dao;
import com.Jevin.domain.Emp;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
public interface EmpDao {
public List<Emp> getEmp();
}
然后是service层：
package com.Jevin.service;
import com.Jevin.domain.Emp;
import java.util.List;
public interface EmpService {
public List<Emp> getEmp();
}
package com.Jevin.service.inpl;
import com.Jevin.dao.EmpDao;
import com.Jevin.domain.Emp;
import com.Jevin.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class EmpServiceImpl implements EmpService {
@Autowired
private EmpDao empDao;
@Override
public List<Emp> getEmp() {
return empDao.getEmp();
}
}
最后第controller层：
package com.Jevin.controller;
import com.Jevin.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/emp")
public class EmpController {
@Autowired
private EmpService empService;
@RequestMapping(value="/query")
public Object getEmp(){
return empService.getEmp();
}
}
好了，至此代码已经都写完了，接下来配置tomcat容器：
这里，还需要将你的项目打包成jar包，或者是war包，尽管idea已经替你打好了，但是你还需要学会自己打包：如下：
然后就是将项目部署到tomcat中去：
好了，至此项目已经结束，可以启动tomcat跑项目了：
浏览器中有如上的json信息，表明配置成功了！