SSM基础配置

该篇博客主要写了关于SSM框架整合的一些基础配置

pom.xml

<groupId>com.ssm</groupId>
<artifactId>SSM</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>
<packaging>war</packaging>
<properties>
    <!-- spring版本号 -->
    <spring.version>4.3.14.RELEASE</spring.version>
    <!-- mybatis版本号 -->
    <mybatis.version>3.2.8</mybatis.version>
    <!-- log4j日志文件管理包版本 -->
    <slf4j.version>1.6.4</slf4j.version>
    <log4j.version>1.2.17</log4j.version>
</properties>

<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <!-- 表示开发的时候引入，发布的时候不会加载此包 -->
        <scope>test</scope>
    </dependency>
    <!-- spring核心包 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-oxm</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</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-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- mybatis核心包 -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>${mybatis.version}</version>
    </dependency>
    <!-- mybatis/spring包 -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.2.2</version>
    </dependency>
    <!-- 导入java ee jar 包 -->
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
    </dependency>
    <!-- 导入Mysql数据库链接jar包 -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.30</version>
    </dependency>
    <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.2.2</version>
    </dependency>
    <!-- JSTL标签类 -->
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>
    <!-- 日志文件管理包 -->
    <!-- log start -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
    </dependency>


    <!-- 格式化对象，方便输出日志 -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.1.41</version>
    </dependency>


    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j.version}</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <!-- log end -->
    <!-- 映入JSON -->
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.13</version>
    </dependency>
     <!--上传组件包 -->
    <!--<dependency>-->
        <!--<groupId>commons-fileupload</groupId>-->
        <!--<artifactId>commons-fileupload</artifactId>-->
        <!--<version>1.3.1</version>-->
    <!--</dependency>-->
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>


    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.9</version>
    </dependency>
    <!--json包-->
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.8.5</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.8.5</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.8.5</version>
    </dependency>
    <!--JSR 303校验-->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>5.3.0.Final</version>
    </dependency>
    <dependency>
        <groupId>javax.el</groupId>
        <artifactId>javax.el-api</artifactId>
        <version>3.0.0</version>
    </dependency>
    <!-- spring-aop -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>4.3.14.RELEASE</version>
    </dependency>
    <!-- aspectjweaver -->
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.8.10</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjrt</artifactId>
        <version>1.8.10</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/cglib/cglib-nodep -->
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib-nodep</artifactId>
        <version>2.2</version>
    </dependency>
    <dependency>
        <groupId>aopalliance</groupId>
        <artifactId>aopalliance</artifactId>
        <version>1.0</version>
    </dependency>

    <!-- shiro-core -->
    <dependency>
        <groupId>org.apache.shiro</groupId>
        <artifactId>shiro-core</artifactId>
        <version>1.2.3</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-spring -->
    <dependency>
        <groupId>org.apache.shiro</groupId>
        <artifactId>shiro-spring</artifactId>
        <version>1.2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.shiro</groupId>
        <artifactId>shiro-ehcache</artifactId>
        <version>1.2.3</version>
    </dependency>
</dependencies>

web.xml

DispatcherServlet

首先我们提到spring不能错过的便是DispatcherServlet，它作为spring的核心帮我们简化了很多操作,下图为在web.xml中DispatcherServlet的配置代码 （包含servlet3.0文件上传）要注意两处的\必须名称相同，并配置该名称的xxx-servlet.xml

<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>
  org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>WEB-INF/spring-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<!--基于servlet 3.0的文件上传-->
  <multipart-config>
      <location>/Users/mintaoyu/Desktop/springsm</location>
      <max-file-size>10485760</max-file-size>
      <max-request-size>104857600</max-request-size>
      <file-size-threshold>102400</file-size-threshold>
  </multipart-config>
</servlet>
<!--拦截请求-->	
<servlet-mapping>
<servlet-name>spring</servlet-name>
<!--如果采用*.do则不支持restful风格，采用/则拦截静态页面但支持restful风格
(可配置<mvc:default-servlet-handler/>)-->
<url-pattern>/</url-pattern>
</servlet-mapping>

error page

<!--自定义错误跳转页面-->
 <error-page>
   <error-code>404</error-code>
   <location>/404error.jsp</location>
 </error-page>

SpringEncodingFilter

这是一个spring自带的字符过滤器，为了保证使用中文的时候不会出现乱码，一般而言将其放在最前端

<filter>
    <filter-name>SpringEncodingFilter</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>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
   		<filter-name>SpringEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

ContextLoaderListener

上下文监听器，作用是自动装配ApplicationContext的配置信息第一时间初始化springIOC容器，如果在web.xml中不写任何参数配置信息，默认的路径是/WEB-INF/applicationContext.xml，在WEB-INF目录下创建的xml文件的名称必须是applicationContext.xml

<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

spring总结—applicationContext.xml

<context:component-scan base-package="com.ssm"/>
<!-- 使用注解驱动 -->
<context:annotation-config/>
<!-- 数据库连接池 -->
<!--引入jdbc.properties文件-->
<context:property-placeholder location="/WEB-INF/jdbc.properties"/>
<!--?useUnicode=true&amp;characterEncoding=utf8  写入之后就可以查询中文了 在xml中配置的话要添加amp; 引入jdbc方法的话不用添加 -->
<!--配置数据源-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="${driverClassName}"/>
    <property name="url" value="${url}"/>
    <property name="username" value="${username}"/>
    <property name="password" value="${password}"/>
    <property name="maxActive" value="${maxActive}"/>
    <property name="maxIdle" value="${maxIdle}"/>
    <property name="maxWait" value="${maxWait}"/>
</bean>

<!-- 集成mybatis -->
<bean id="SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
	<!--引入数据源-->
    <property name="dataSource" ref="dataSource"/>
    <!--引入mybatis配置文件-->
    <property name="configLocation" value="classpath:/mybatis-config.xml"/>
    <!--自动扫描mapper文件-->
    <property name="mapperLocations" value="classpath:/mapper/*"/>
</bean>

<!-- 配置数据源事务管理器 -->
<bean id="transactionManager"
      class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource"/>
</bean>
<!--支持事务注解-->
<tx:annotation-driven transaction-manager="transactionManager"/>

<!--将映射接口直接转化为spring容器中的bean-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <!--将dao层的接口全部转化为bean-->
    <property name="basePackage" value="com.ssm.Dao"/>
    <property name="sqlSessionFactoryBeanName" value="SqlSessionFactory"/>
</bean>
```    

# spring总结---spring-servlet.xml

```xml
<!-- 使用注解驱动 -->
<!--系统初始化Springmvc系统默认的适配器，映射器-->
<mvc:annotation-driven/>
<!-- 定义扫描装载的包 -->
<context:component-scan base-package="com.ssm"/>
<!--①处理静态资源文件请求   最常采用-->
<mvc:default-servlet-handler/>
<!--②资源映射(用这个方法也可以访问静态页面  高级)-->
<!--<mvc:resources mapping="/**" location="/WEB-INF/static/"/>-->
<!-- 定义视图解析器 -->
<!-- 找到Web工程/WEB-INF/JSP文件夹，且文件结尾为jsp的文件作为映射 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/"/> <!--前缀-->
    <property name="suffix" value=".jsp"/> <!--后缀-->
</bean>

<!--开发登陆拦截器  如不需要该功能可以不配置-->
<mvc:interceptors>
    <mvc:interceptor>
        <!--对哪些资源做拦截-->
        <mvc:mapping path="/**"/>
        <!--排除不需要被拦截的资源-->
        <mvc:exclude-mapping path="/login"/>
        <mvc:exclude-mapping path="/registered"/>
        <bean class="com.ssm.Interceptor.SecurityInterceptor"/>
    </mvc:interceptor>
</mvc:interceptors>

最后是项目结构图