使用IDEA搭建ssm框架

环境

配置步骤

> 5.1、为java po类起类别名

> 6.1、applicationContext-dao.xml

> 6.1.1、加载数据库配置文件

> 6.1.2、配置数据源c3p0连接池

> 6.1.3、配置SqlSessionFactory

> 6.1.4、配置Mapper接口扫描器

> 6.2、applicationContext-service.xml

> 6.2.1、添加组件扫描，类必须加上注解（扫描service.impl）

> 6.3、applicationContext-trsaction.xml

> 6.3.1、配置数据源

> 6.3.2、开启注解（通知）

> 6.3.3、AOP

> 7.1、springmvc.xml

> 7.1.1、加载静态资源

> 7.1.2、组件扫描（扫描 controller）

> 7.1.3、开启注解驱动

> 7.1.4、视图解析器

> 8.1.1、加载Spring容器

> 8.1.2、加载Spring监听器

> 8.1.3、加载springMVC前端控制器

> 8.1.4、加载spring提供乱码过滤器

配置详细步骤

新建maven项目

项目基本展示

编写pom.xml文件,导入相关jar包

<dependencies>
<!--添加测试类-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!--log4j-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!--springWEB-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>

<!--springMVC-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>

<!--spring tx 事务处理-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>

<!--spring aop-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>4.3.9.RELEASE</version>
</dependency>

<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.10</version>
</dependency>

<!--spring-jdbc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>

<!--jstl-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>

<!--mybatis逆向工程-->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>

<!--mybatis spring整合包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>

<!--hibernate 数据校验器包-->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.1.Final</version>
</dependency>

<!--c3p0链接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>

<!--Mysql数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
<dependency>
<groupId>org.jetbrains</groupId>
<artifactId>annotations-java5</artifactId>
<version>RELEASE</version>
</dependency>
</dependencies>

新建各种Package包，其中有：

在java文件下新建以下文件：

com.flyme.controller

com.flyme.mapper

com.flyme.po

com.flyme.service

com.flyme.service.impl

添加db.properties数据库配置、以及日志log4j.properties配置文件

在resources文件下新建以下文件

db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/examination_system
jdbc.username=root
jdbc.password=root

log4j.properties

### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=../logs/mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### set log levels - for more verbose logging change 'info' to 'debug' ###
log4j.rootLogger=info, stdout

添加mybatis配置文件

在resources文件下新建mybatis文件夹，并且在其下新建以下文件

mybatis.cfg.xml

<?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">
<!--MyBatis主配置文件-->
<configuration>
<!--为java po类起类别名-->
<typeAliases>
<package name="com.flyme.po"/>
</typeAliases>
</configuration>

添加Spring配置文件

在recources文件下新建spring文件夹，并且在其下新建下文件

applicationContext-dao.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"
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">

<!--加载数据库配置文件-->
<context:property-placeholder location="classpath:db.properties"/>

<!--配置数据源c3p0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}"/>
</bean>

<!--配置SqlSessionFactory-->
<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--加载mybatis配置文件-->
<property name="configLocation" value="classpath:mybatis/mybatis.cfg.xml"/>
<!--数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>

<!--Mapper批量扫描，从Mapper包扫描接口，自动创建代理对象，并在Spring容器中自动注册
使用 Mybatis与Spring整合包的这个 Mapper 扫描器后， Mybatis 配置文件里的扫描器，就可以取消掉了
遵循的规范 不变
自动扫描出来的Mapper的bean的id为Mapper类名（首字母小写）
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--如果需要扫描多个包下的mapper,每个包中间使用半角逗号分开-->
<property name="basePackage" value="com.flyme.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sessionFactory"/>
</bean>
</beans>

applicationContext-service.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"
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">

<!--组件扫描，如果想要类被组件扫描，扫描到，并在Spring容器中注册的话
必须在类名上添加上注解 @Repository、@Service、@Controller、@Component （这四个注解功能一样，名字不同只是为了区分不同功能）
@Component 是通用组件
-->
<context:component-scan base-package="com.flyme.service.impl"></context:component-scan>
</beans>

applicationContext-trsaction.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:aop="http://www.springframework.org/schema/aop"
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/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">

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--配置数据源-->
<property name="dataSource" ref="dataSource"></property>
</bean>

<!--开启注解（通知）-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!--传播行为-->
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="select*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>

<!--AOP-->
<aop:config>
<!--设置切入点-->
<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.flyme.service.impl.*.*(..))"/>
</aop:config>

</beans>

添加springmvc配置文件

在resources/spring文件下，新建springmvc.xml文件

springmvc.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">

<!--加载静态资源-->
<mvc:default-servlet-handler/>

<!--1.组件扫描，可以扫描 controller、Service、...
并注册添加到 spring 容器中
这里扫描 controller，指定controller的包
-->
<context:component-scan base-package="com.flyme.controller"/>

<!--开启注解驱动-->
<mvc:annotation-driven/>

<!--视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>

重新编写web.xml文件

web.xml

<?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">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<!--加载Spring容器-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext-*.xml</param-value>
</context-param>

<!--加载Spring监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!--springMVC前端控制器加载-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--contextConfigLocation配置SpringMVC加载的配置文件（配置处理器，映射器等等）
如果不配置contextConfigLocation，默认加载的是：/WEB-INF/servlet名称-servlet.xml(springmvc-servlet.xml)
-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
</servlet>
<!--
1. /*  拦截所有   jsp  js png .css  真的全拦截   建议不使用
2. *.action *.do 拦截以do action 结尾的请求     肯定能使用   ERP
3. /  拦截所有 （不包括jsp) (包含.js .png.css)  强烈建议使用     前台 面向消费者  www.jd.com/search   /对静态资源放行
-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<!--spring提供 乱码过滤器-->
<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>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

</web-app>

SSM框架就此已经搭建完成，下面进行测试

mybatis进行逆向工程

生产po、mapper相关文件，看图。

如何通过mybatis逆向工程生成，见链接。后续更新

测试类

mybatis框架测试

在src/test/java下面进行创建包com.flyme.service，在此下面进行创建CourseServiceImplTest测试类，以用来测试mybatis框架是否搭建成功。

CourseServiceImplTest.java

package com.flyme.service;

import com.flyme.po.Course;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class CourseServiceImplTest {

private ApplicationContext applicationContext;

@Before
public void setUp() throws Exception {
applicationContext = new ClassPathXmlApplicationContext(new String[]{"spring/applicationContext-dao.xml",
"spring/applicationContext-service.xml"});
}

@Test
public void findById() throws Exception {

CourseService courseService = (CourseService) applicationContext.getBean("courseServiceImpl");
Course course = courseService.findById(1);
System.out.println(course.toString());
}

}

运行findById()方法，出现以下图，证明搭建成功

SpringMVC框架测试

AdminController.java

在src/main/java，com.flyme.controller包下面创建AdminController.java，以用来测SpringMVC框架是否搭建成功。

package com.flyme.controller;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/myController")
public class AdminController extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doPost(req, resp);
}

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String name = req.getParameter("name");
req.setAttribute("name", name);
System.out.println(name);
req.getRequestDispatcher("index.jsp").forward(req, resp);
}
}

idex.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<form action="myController" method="post">
<input name="name">
return:${name}
<input value="提交" type="submit">
</form>
</body>
</html>

运行项目

配置Tomcat

最后选择OK，即可。

浏览器输入 http://localhost:8010/ （因为笔者改动了端口号，灵活应用）

输入：“我是”

结果：

配置成功

问题集锦

如有问题欢迎评论
...