ssm入门之环境搭建

一、导入相应jar包

　　此次ssm搭建使用的IDE为IDEA，采用maven作为项目管理工具。以下是SSM环境搭建所需要引入的简单jar包

<dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>

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

    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.5</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.46</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.2</version>
    </dependency>
  </dependencies>

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二、项目结构

三、配置文件

　　此次搭建一共建立了一下几个配置文件：applicationContext.xml 、springmvc.xml、web.xml、jdbc.properties、generatorConfig.xml等几个配置文件。

　　applicationContext.xml配置文件为Spring中最大的配置文件，配置着数据库的数据源，连接池已经和mybatis整合的SqlSessionFactory等bean,以下配置文件有注释说明。

　　applicationContext.xml:

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       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">
    <!--开启包的注解扫描-->
    <context:component-scan base-package="com.ring2.service,com.ring2.dao"></context:component-scan>
    <!--加载配置文件-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>

    <!--配置数据库连接池,此为C3P0数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="user" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
    </bean>
    <!--配置Mybatis中的sqlSessionFactory操作数据库-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!--扫面mapper.xml-->
        <property name="mapperLocations" value="classpath:mapper/**"></property>
    </bean>

    <!--扫面接口dao-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ring2.dao"></property>
    </bean>


</beans>

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　　springmvc.xml:

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="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 http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd ">
    <!--开启包的注解扫描-->
    <context:component-scan base-package="com.ring2.controller"></context:component-scan>

    <!--为我们注册了多个所需的bean以及开启Controller诸多注解功能-->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--试图解析器，简化返回的字符串的书写-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/html/"></property>
        <property name="suffix" value=".html"></property>

    </bean>

    <!--静态资源的配置,防止被DispatcherServlet中配置的/所拦截-->
    <mvc:resources mapping="/html/**" location="/html/"></mvc:resources>
</beans>

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　　web.xml:

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>

  <!--加载初始化applicationContext容器-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>


<!--添加字符编码过滤器,使request、response的相应编码为utf-8-->
  <filter>
    <filter-name>encodingConfig</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingConfig</filter-name>
    <url-pattern>/</url-pattern>
  </filter-mapping>

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

  <!--配置前端控制器dispacherServlet，拦截前端url请求-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>




</web-app>

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　　generatorConfig.xml:

<?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>
    <!-- 数据库驱动 -->
   
    <context id="DB2Tables"   targetRuntime="MyBatis3">
        <commentGenerator> 
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/test"
            userId="root" 
            password="wqq123">
        </jdbcConnection>
        <!-- 数据库类型与java类型转换 -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!-- 生成Model类存放位置 -->
        <javaModelGenerator targetPackage="com.ring2.pojo" targetProject="./src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="false"/>
        </javaModelGenerator>
        <!-- 生成映射文件存放位置 -->
        <sqlMapGenerator targetPackage="mapper" targetProject="./src/main/resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!-- 生成Dao类存放位置 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.ring2.dao" targetProject="./src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!-- 生成对应表及类名 -->
<!--        <table tableName="user" domainObjectName="User"-->
<!--               enableCountByExample="false" enableUpdateByExample="false"-->
<!--               enableDeleteByExample="false" enableSelectByExample="false"-->
<!--               selectByExampleQueryId="false"-->
<!--

        </table>
        >-->
        <table tableName="users" domainObjectName="User"
                       enableCountByExample="false" enableUpdateByExample="false"
                       enableDeleteByExample="false" enableSelectByExample="false"
                       selectByExampleQueryId="false">
</table>

    </context>
</generatorConfiguration>

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　　generatorConfig.xml配置文件为mybatis-generator 逆向工程配置文件，配置此文件可以自动生成dao、mapper、pojo等Java类及xml文件，非常方便，配置完成后通过以下代码生成：

public class GeneratorMapper {
    public static void main(String[] args) throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("generatorConfig.xml");
        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);
    }
}

　　以上就是简单的配置文件，其中还有许多东西没有配置，如事务等等。先简单入个门。

　　最后就是编写简单的增删改查代码来测试以下。可以自己试试。。

posted @ 2019-08-05 14:02 ring977 阅读(158) 评论(0) 收藏举报

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ring977

We are just changing the world a little bit.

ssm入门之环境搭建

一、导入相应jar包

二、项目结构

三、配置文件