在Eclipse下使用Maven创建和管理SSM项目.

1.使用Maven搭建JavaWeb项目

  具体搭建方法: 创建Maven版的Web工程

2.使用Maven导入SSM框架所需jar

  项目的pom.xml如下:

SSM整合的pom文件：One More Thing 👇 
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<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.crainyday.ssmr</groupId>
    <artifactId>ssmr</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <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>
        <junit.version>4.12</junit.version>
        <spring.version>5.2.5.RELEASE</spring.version>
        <taglibs.version>1.2.5</taglibs.version>
        <mysql.version>5.1.48</mysql.version>
        <c3p0.version>0.9.5.5</c3p0.version>
        <mybatis.version>3.5.4</mybatis.version>
        <jackson.version>2.10.3</jackson.version>
    </properties>
    <dependencies>
        <!-- junit 单元测试 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
        <!-- log4j 日志 -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>2.0.0-alpha1</version>
            <scope>compile</scope>
        </dependency>
        <!-- servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>
        <!-- Spring 及 SpringMVC 的 jar -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</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-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- SpringAOP 相关依赖 jar -->
        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>3.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.5</version>
        </dependency>
        <!-- taglib 标签库jar -->
        <dependency>
            <groupId>org.apache.taglibs</groupId>
            <artifactId>taglibs-standard-impl</artifactId>
            <version>${taglibs.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.taglibs</groupId>
            <artifactId>taglibs-standard-spec</artifactId>
            <version>${taglibs.version}</version>
        </dependency>
        <!-- 数据库相关 jar -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>${c3p0.version}</version>
        </dependency>
        <!-- mybatis 及 mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.4.0</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.4</version>
        </dependency>
        <!-- Json数据处理相关jackson包 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>${jackson.version}</version>
        </dependency>
    </dependencies>
</project>

3.配置项目的web.xml

①关于整合

  我们有两种整合方法:

  • ①同时配置Spring IOC和Spring MVC IOC

      通常情况下, 我们都是配置两个IOC容器的.

    • 将类似于数据源、事务、 整合其他框架的配置都是放在 Spring 的配置文件中, 还有 Service 和 Dao 对象等.
    • 而 Spring MVC 的 IOC 只负责HandlerMapping 映射策略、各种 Controller 控制器、各种视图解析、拦截器、LocalResolver 国际化处理等的配置.

  • ②只配置Spring MVC IOC: 将所有配置都放在 SpringMVC 的配置文件中. 也可以分多个 Spring 的配置文件, 然后使用 import 节点导入其他的配置文件.

  • 在这里, 我们用第①种方法.

②在web.xml中配置字符过滤器和RESTFUL风格API过滤器

  • 为了解决在项目运行过程中出现的乱码问题, 需要配置字符过滤器, 将所有的编码格式统一为 UTF-8.

  • 为了支持 RESTFUL API开发, 需要配置 RESTFUL 风格 API 过滤器.

在 web.xml 中加入如下配置:

One More Thing 👇 
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<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="4.0"
	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">
    <!-- 字符过滤器 -->
    <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>
    <!-- RESTFUL 风格 API 过滤器 -->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

③在web.xml中配置 Spring IOC

  我们希望在WEB 应用服务器启动时就创建Spring IOC, 因此需要监听器.

通过监听器来监听 ServletContext 对象的创建, 监听到ServletContext对象被创建, 就创建SpringIOC容器.

这里不需要自定义 Listener 来创建 Spring IOC, 直接使用 SpringMVC 提供的 ContextLoaderListener 即可.

在 web.xml 中加入如下配置:

(注意: 需要在项目的 resources 目录下创建 spring.xml 文件)

One More Thing 👇 
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<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="4.0"
	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">
    <!-- 字符过滤器 -->
    <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>
    <!-- RESTFUL 风格 API 过滤器 -->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- 加载 Spring 容器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

④在web.xml中配置 SpringMVC IOC

  在完成对 ContextLoaderListener 的初始化后, Web 容器开始初始化 DispatcherServlet(前端控制器). 其作为一个Servlet, 所有的 Web 请求都需要通过它来处理, 然后进行转发、匹配、数据处理后, 并转由页面进行展现, 它可以说是 SpringMVC 最核心的部分.

在 web.xml 中加入如下配置:

(注意: 这里的 web.xml 是项目的 web.xml 的基础最终配置)

web.xml文件：One More Thing 👇 
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<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="4.0"
	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">
    <!-- 字符过滤器 -->
    <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>
    <!-- RESTFUL 风格 API 过滤器 -->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- 加载 Spring 容器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 加载 SpringMVC 容器 -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

4.配置各自IOC的xml

注意: 以下所有的配置文件, 均在项目的 classpath 下.

  这里我们是创建了两个 IOC, 需要配置两个 xml 文件: spring.xml 和 spring-mvc.xml.

首先, 他们两个所做的功能不同, 故需要扫描加载不同的 Class.

一个指定扫描包, 一个排除扫描包.

注意: 指定扫描时, 需要设置属性use-default-filters="false".

MyBatis相关配置见: MyBatis相关配置.

①配置spring.xml

Spring容器的配置文件：One More Thing 👇 
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<?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:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:task="http://www.springframework.org/schema/task"
	xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-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
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
    <!-- 排除扫描 -->
    <context:component-scan
		base-package="ssm">
        <context:exclude-filter type="annotation"
			expression="org.springframework.stereotype.Controller" />
        <context:exclude-filter type="annotation"
			expression="org.springframework.web.bind.annotation.RestControllerAdvice" />
    </context:component-scan>
    <!-- 载入 properties 配置文件 -->
    <context:property-placeholder
		location="classpath:db.properties" />
    <!-- 配置数据源 -->
    <bean id="dataSource"
		class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
        <property name="user" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
        <property name="acquireRetryAttempts" value="0" />
        <property name="maxIdleTime" value="3600" />
        <!-- 每隔固定时间, 需要用 select 1 语句检测数据库连接, 避免数据库连接超时 -->
        <property name="preferredTestQuery" value="select 1" />
        <property name="idleConnectionTestPeriod" value="18000" />
        <property name="testConnectionOnCheckout" value="false" />
    </bean>
    <!-- 配置事务 -->
    <bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 基于注解使用事务 -->
    <tx:annotation-driven
		transaction-manager="transactionManager" />
    <!-- 配置 MyBatis -->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation"
			value="classpath:mybatis-config.xml"></property>
        <property name="mapperLocations"
			value="classpath:mapping/*.xml"></property>
        <property name="dataSource" ref="dataSource"></property>
        <property name="typeAliasesPackage"
			value="ssm.model"></property>
    </bean>
    <!-- MyBatis的扫描包 -->
    <mybatis-spring:scan base-package="ssm.mapper" />
</beans>

②配置spring-mvc.xml

spring-mvc容器的配置文件：One More Thing 👇 
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<?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-4.3.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">
    <!-- 指定扫描 -->
    <context:component-scan
		base-package="ssm" use-default-filters="false">
        <context:include-filter type="annotation"
			expression="org.springframework.stereotype.Controller" />
        <context:include-filter type="annotation"
			expression="org.springframework.web.bind.annotation.RestControllerAdvice"/>
    </context:component-scan>
    <!-- 视图解析器 -->
    <bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!-- 关于文件上传的配置操作 -->
    <bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="utf-8"></property>
        <!-- 最大上传文件大小: 10MB -->
        <property name="maxUploadSize" value="10485760"></property>
    </bean>
    <!-- 拦截器 -->
    <mvc:interceptors>
        <!-- 令牌拦截器 -->
        <mvc:interceptor>
            <mvc:mapping path="/**" />
            <!-- 不需要拦截的路径 -->
            <mvc:exclude-mapping path="/wxLogin" />
            <mvc:exclude-mapping path="/testLogin"/>
            <mvc:exclude-mapping path="/qrcode/**"/>
            <bean class="com.crainyday.sport.utils.TokenInterceptor"></bean>
        </mvc:interceptor>
    </mvc:interceptors>
    <mvc:default-servlet-handler />
    <mvc:annotation-driven />
</beans>

5.MyBatis以及其他配置

①数据源配置

  这里用的是MySQL数据库, db.properties:

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jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/javaee?useSSL=false
jdbc.username=root
jdbc.password=root

②log4j配置

  这里用的 slf4j+log4j 的方式做的日志处理, log4j.properties:

(可以参看这里的, SSM框架下log4j的配置和使用 .)

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log4j.rootLogger=ERROR, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-5p %d{MM-dd HH:mm:ss,SSS} %m  (%F:%L) \n

③MyBatis配置

  可以使用 MyBatisGenerator 来自动生成某些相关代码.

MyBatisGenerator 的配置文件 generatorConfig.xml: One More Thing 👇 
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<?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>
    <properties resource="db.properties"/>
    <!--数据库驱动-->
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接地址账号密码-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" 
        			connectionURL="${jdbc.url}" 
        			userId="${jdbc.username}" 
        			password="${jdbc.password}">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!--生成 Model 类存放位置-->
        <javaModelGenerator targetPackage="ssm.model" 
        					targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!--生成映射文件存放位置-->
        <sqlMapGenerator targetPackage="mapping" 
        				 targetProject="src/main/resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!--生成Dao类存放位置-->
        <javaClientGenerator type="XMLMAPPER" 
        					targetPackage="ssm.mapper" 
        					targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!--生成对应表及类名-->
        <!-- 
        	enableInsert="true": 生成 insert 和 insertSelective 语句
        	enableDeleteByPrimaryKey="true": 生成 deleteByPrimaryKey 语句
        	enableUpdateByPrimaryKey="true": 生成 updateByPrimaryKey 和 updateByPrimaryKeySelective 语句
        	enableSelectByPrimaryKey="true": 生成 selectByPrimaryKey 语句
         -->
        <table  tableName="customer" 
        		domainObjectName="Customer" 
        		enableDeleteByExample="false" 
        		enableUpdateByExample="false" 
        		enableCountByExample="false" 
        		enableSelectByExample="false" 
        		selectByExampleQueryId="false"
        		selectByPrimaryKeyQueryId="false"
        		
        		enableInsert="true"
        		enableDeleteByPrimaryKey="true"
        		enableUpdateByPrimaryKey="true"
        		enableSelectByPrimaryKey="true">
        </table>
    </context>
</generatorConfiguration>
MyBatisGenerator 的使用: One More Thing 👇 
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package ssm;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;

public class MBGTest {
    public static void main(String[] args) {
        try {
            List<String> warnings = new ArrayList<String>();
            boolean overwrite = true;
            String cfile = "/generatorConfig.xml";
            File configFile = new File(MBGTest.class.getResource(cfile).getFile());
            ConfigurationParser cp = new ConfigurationParser(warnings);
            Configuration config = cp.parseConfiguration(configFile);
            DefaultShellCallback callback = new DefaultShellCallback(overwrite);
            MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
            myBatisGenerator.generate(null);
            for (String warning : warnings) {
                System.err.println(warning);
            }
            System.out.println("生成结束......");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

mybatis-config.xml:

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<?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>
        <setting name="mapUnderscoreToCamelCase" value="true" />
        <setting name="jdbcTypeForNull" value="NULL" />
        <setting name="lazyLoadingEnabled" value="true" />
    </settings>
</configuration>

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