SSM快速搭建

SSM快速搭建

1.SSM组成部分 Spring + SpringMVC + Mybatis

2.本教程基于idea和maven来实现ssm的搭建工作

1.开始：

1.使用idea创建一个maven web项目。注意：一定要选取自己已经配置到的maven环境【带阿里云的】

2.检查项目结构是否正常，在控制台是否出现build success 字样，如果没有是为创建失败

3.找到项目的pom.xml (项目依赖管理文件)，在标签里加入<spring.version>4.0.6.RELEASE</spring.version>，并写入以下代码：

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 <dependencies>
    <dependency>
      <groupId>commons-beanutils</groupId>
      <artifactId>commons-beanutils</artifactId>
      <version>1.7.0</version>
    </dependency>
    <dependency>
      <groupId>commons-lang</groupId>
      <artifactId>commons-lang</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!-- c3p0 数据库连接池 start -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>
    <!-- c3p0 数据库连接池 end -->
    <!-- jsp-servlet支持 start -->
    <dependency>
      <groupId>javax.servlet.jsp.jstl</groupId>
      <artifactId>jstl-api</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.1</version>
    </dependency>
    <dependency>
      <groupId>org.glassfish.web</groupId>
      <artifactId>jstl-impl</artifactId>
      <version>1.2</version>
      <exclusions>
        <exclusion>
          <groupId>javax.servlet</groupId>
          <artifactId>servlet-api</artifactId>
        </exclusion>
        <exclusion>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>jsp-api</artifactId>
        </exclusion>
        <exclusion>
          <groupId>javax.servlet.jsp.jstl</groupId>
          <artifactId>jstl-api</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
    </dependency>
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
    <!-- jsp-servlet支持 end -->
    <!-- 标签库 start -->
    <dependency>
      <groupId>org.apache.taglibs</groupId>
      <artifactId>taglibs-standard-spec</artifactId>
      <version>1.2.1</version>
    </dependency>
    <dependency>
      <groupId>org.apache.taglibs</groupId>
      <artifactId>taglibs-standard-impl</artifactId>
      <version>1.2.1</version>
    </dependency>
    <!-- 标签库 end -->
    <!-- apache的commons系列包 start -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.1</version>
    </dependency>
    <dependency>
      <groupId>commons-collections</groupId>
      <artifactId>commons-collections</artifactId>
      <version>3.2.1</version>
    </dependency>
    <!-- apache的commons系列包 end -->
    <!-- apache 工具包 start -->
    <dependency>
      <groupId>org.apache.xmlbeans</groupId>
      <artifactId>xmlbeans</artifactId>
      <version>2.6.0</version>
    </dependency>
    <!-- apache 工具包 end -->
    <!-- spring start -->
    <dependency>
      <groupId>aopalliance</groupId>
      <artifactId>aopalliance</artifactId>
      <version>1.0</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</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-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${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>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-websocket</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc-portlet</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-messaging</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jms</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-instrument-tomcat</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-instrument</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-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- spring start -->
    <!-- mysql -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.46</version>
    </dependency>
    <!-- mybatis start -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.0.5</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.0.1</version>
    </dependency>
    <!-- mybatis end -->
    <!--日志管理 start-->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.1.2</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-core</artifactId>
      <version>1.1.2</version>
      <scope>compile</scope>
    </dependency>
    <!--日志管理 end-->
    <!-- https://mvnrepository.com/artifact/javax.mail/mail -->
    <!--getter setter 注解 start-->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.16.10</version>
    </dependency>
    <!--getter setter 注解 end-->
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-core-asl</artifactId>
      <version>1.9.13</version>
    </dependency>
    <dependency>
      <groupId>net.sf.ezmorph</groupId>
      <artifactId>ezmorph</artifactId>
      <version>1.0.6</version>
    </dependency>
<!--      todo 数据校验-->
    <dependency>
      <groupId>org.hibernate.validator</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>6.0.13.Final</version>
    </dependency>

    <dependency>
      <groupId>org.jboss.logging</groupId>
      <artifactId>jboss-logging</artifactId>
      <version>3.4.2.Final</version>
    </dependency>

    <dependency>
      <groupId>javax.validation</groupId>
      <artifactId>validation-api</artifactId>
      <version>2.0.1.Final</version>
    </dependency>

    <!--json start-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.15</version>
    </dependency>
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-mapper-asl</artifactId>
      <version>1.9.13</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jackson.verson}</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>${jackson.verson}</version>
    </dependency>
    <!--json end-->

<!--    分页page-->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>5.1.2</version>
    </dependency>
  </dependencies>

4.找到pom.xml文件中的properties标签，并填入如下代码：

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<spring.version>4.0.6.RELEASE</spring.version>
<jackson.verson>2.8.7</jackson.verson>

5.选中main文件夹 创建Java源文件和resources配置文件夹并将其对应成对应的类型

6.在Java源文件夹中创建如下包：

  • cimmin(存放项目中所有的公共类，比如同意返回对象)

  • dao（存放dao层接口，起名方式为‘Mapper.java’）

  • service(存放项目中的所有业务逻辑接口)

  • controller(控制层，负责调用service层来实现业务逻辑的调用)

  • util(工具类，比如分页类，日期转换之类的工具)

  • entity(实体类，主要负责MySQL中对应的字段和Java的属性一一对应)

  • vo（view-object：视图对象，当页面中所需要的字段和实体类冲突时，可使用vo来解决）

7.在resource文件夹中创建如下内容

  • mappers(文件夹：存放所有的mapper的映射文件，这里的映射文件要与dao层接口一一对应)
  • applicationContext.xml (spring - mybatis配置文件，主要负责全项目的注解扫描，对象创建等服务)
  • applicationContext-mvc.xml (Springmvc 方向的配置文件，只要负责文件上传，视图解析)
  • db.properties (数据库信息配置文件)
  • logback.xml(日志记录配置文件)

8.编辑web.xml(全局最大的配置文件，在项目启动时候会优先加载此配置文件)

​ 1.跟换web.xml的头标签，因为2.3不支持el表达式

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<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
  http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
 </web-app>

​ 2写入一下代码

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<display-name>Archetype Created Web Application</display-name>
    <!--监听上下文启动  -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:applicationContext.xml</param-value>
  </context-param>
  <!-- 配置springmvc 相关内容-->
  <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-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- 配置过滤器，如果页面在传递数据时候乱码，配置这个-->
  <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>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
      <!-- 这里一定要写/*过滤器的所有请求 -->
    <url-pattern>/*</url-pattern>
  </filter-mapping>

9配置applicationContext.xml内容

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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"
       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">
    <!--        TODO 开启注解扫描-->
    <context:component-scan base-package="cn.kgc" />
<!--引入配置文件-->
    <context:property-placeholder location="classpath*:db.properties" />
<!--    配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.DriverManagerDataSource">
        <property name="driverClass" value="${jdbc.driver}" />
        <property name="user" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <property name="jdbcUrl" value="${jdbc.url}" />
    </bean>
<!--配置会话工厂 主要为dao层服务-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" >
<!--      todo  配置会话工厂的数据源-->
        <property name="dataSource" ref="dataSource" />
<!--        配置实体类的别名-->
        <property name="typeAliasesPackage" value="cn.kgc.ssm.entity" />
<!--      todo  配置mapper映射文件的位置，这里同样采用固定位置来查找配置文件-->
        <property name="mapperLocations" value="classpath*:mapper/*Mapper.xml" />
    </bean>
<!--扫描dao层-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.kgc.ssm.dao" />
    </bean>
<!--配置事务管理-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" >
        <property name="dataSource" ref="dataSource" />
    </bean>
<!--    todo 由于这次例子又没数据库增删改查操作,所以不写声明式事务-->
</beans>

10配置applicationContext-mvc.xml内容

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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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--    todo 标志控制层-->
    <mvc:annotation-driven conversion-service="conversionService2"/>

<!--    开启注解扫描-->
    <context:component-scan base-package="cn.kgc" />
<!--  配置视图解析器  -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>

<!--   todo 配置静态资源-->
    <mvc:resources mapping="/statics/**" location="/statics/" />

<!--    todo 全局异常处理-->
<!--    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">-->
<!--&lt;!&ndash;        配置错误信息的参数名称&ndash;&gt;-->
<!--        <property name="exceptionAttribute" value="exception" />-->
<!--&lt;!&ndash;        配置展示错误信息的页面&ndash;&gt;-->
<!--        <property name="defaultErrorView" value="error" />-->
<!--    </bean>-->

<!--    配置date转化-->
    <bean class="org.springframework.context.support.ConversionServiceFactoryBean" id="conversionService2">
        <property name="converters">
            <set>
                <bean class="cn.kgc.ssm.utils.DateConvert" />
            </set>
        </property>
    </bean>

<!--    文件上传配置-->
    <bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver" id="multipartResolver">
<!--        设置最大文件上传大小-->
        <property name="maxUploadSize" value="4096000000" />
<!--        设置文件编码格式-->
        <property name="defaultEncoding" value="utf-8" />

        <property name="maxInMemorySize" value="4096" />
    </bean>
</beans>

至此所有的ssm配置工作完成

4项目中注解的解释

  1. @Service 向spring容器中注入当前类为service层，用于service的实现类上
  2. @Controller 相助当前类为控制层
  3. @RequestMapping 这个注解比较厉害，可以修饰类也可以修饰方法，他的主要功能只要被标注，就说明可以接收请求和响应
  4. @Resources 注入其他类，【这里特别容易空指针，请注意扫描内容】
  5. @ResponseBody 表示当前方法返回的内容不走视图解析器
  6. @RequestParam 主要用来接收奇纳丹传来的参数，负责当前端参数名称和后端参数名称不对应的情况，如果mvc中的一个参数被修饰了此注解，默认为必传项
  7. @PathVariable 用户restful风格，从路径中获取参数