web.xml

web.xml配置基本的信息

  1. 指定spring配置文件
  2. 指定springmvc配置文件，
  3. 配置全局字符编码过滤器

  4. rest风格filter设置，用于将POST请求转为DELETE或者PUT ```xml <!DOCTYPE web-app PUBLIC “-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN” “http://java.sun.com/dtd/web-app_2_3.dtd“ > Archetype Created Web Application

    contextConfigLocation classpath:applicationContext.xml

    characterEncodingFilter org.springframework.web.filter.CharacterEncodingFilter encoding utf-8 forceRequestEncoding true forceResponseEncoding true hiddenHttpMethodFilter org.springframework.web.filter.HiddenHttpMethodFilter

    characterEncodingFilter / hiddenHttpMethodFilter /

    org.springframework.web.context.ContextLoaderListener

    dispatcherServlet org.springframework.web.servlet.DispatcherServlet 1 dispatcherServlet / 

  1. <a name="NrxDL"></a>
  2. ## springMVC.xml
  3. springMVC的配置文件，在web.xml中可以指定springMVC的配置文件路径，有两种方式指定
  5. 1. 显示通过contextConfigLocation属性指定处理
  7. ![image.png](https://cdn.nlark.com/yuque/0/2021/png/21630109/1624090602403-0c52b9b3-5a0e-4dd9-b1b3-2ebe18fa32b5.png#clientId=u7db80866-a1a4-4&from=paste&height=247&id=u29a3dc91&margin=%5Bobject%20Object%5D&name=image.png&originHeight=493&originWidth=1270&originalType=binary&ratio=2&size=65020&status=done&style=none&taskId=u3d46a704-64da-46f9-8d19-840f5d27f18&width=635)
  9. 2. 不指定contextConfigLocation属性，默认会在web.xml同级目录下找${servlet-name}-servlet.xml文件，用作springmvc的配置文件
  11. ![image.png](https://cdn.nlark.com/yuque/0/2021/png/21630109/1624090695177-a05acbe0-3740-4306-8f07-e18257f44277.png#clientId=u7db80866-a1a4-4&from=paste&height=344&id=ub4f95b0e&margin=%5Bobject%20Object%5D&name=image.png&originHeight=688&originWidth=2009&originalType=binary&ratio=2&size=128570&status=done&style=none&taskId=uca8dd552-c959-44b1-ba3c-b3cdf1cae6e&width=1004.5)<br />对springmvc做基本的配置
  13. 1. 配置要扫描的包
  14. 1. 配置视图解析器
  15. 1. springmvc无法处理的请求交给tomcat处理
  16. 1. 配置路径自动映射等功能
  17. ```xml
  18. <?xml version="1.0" encoding="UTF-8"?>
  19. <beans xmlns="http://www.springframework.org/schema/beans"
  20.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  21.        xmlns:context="http://www.springframework.org/schema/context"
  22.        xmlns:mvc="http://www.springframework.org/schema/mvc"
  23.        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
  25.     <!--spring mvc 的配置文件, 包含网站跳转逻辑的控制，配置-->
  26.     <!--配置扫描的包-->
  27.     <context:component-scan base-package="com.lyc" use-default-filters="false">
  28.         <!--只扫码@Controller配置的类-->
  29.         <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
  30.     </context:component-scan>
  32.     <!--配置视图解析器-->
  33.     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  34.         <property name="prefix" value="/WEB-INF/views/"/>
  35.         <property name="suffix" value=".jsp"/>
  36.     </bean>
  38.     <!--两个标准配置-->
  39.     <!--将springmvc不能处理的请求交给tomcat-->
  40.     <mvc:default-servlet-handler/>
  41.     <!--能支持springmvc更高级的功能，如JSR303校验、快捷的Ajax、映射动态请求-->
  42.     <mvc:annotation-driven/>
  43. </beans>

spring.xml

配置spring

  1. 需要扫描的包
  2. 数据源配置
  3. 整合mybatis

  4. 事务

    1. <?xml version="1.0" encoding="UTF-8"?>
    2. <beans xmlns="http://www.springframework.org/schema/beans"
    3.     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    4.     xmlns:context="http://www.springframework.org/schema/context"
    5.     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    6.     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    8.  <!--spring 的配置文件-->
    10.  <!--配置要扫描的包，除了controller包归springmvc管，其它包都是spring扫描管-->
    11.  <context:component-scan base-package="com.lyc">
    12.      <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    13.  </context:component-scan>
    15.  <!--配置数据源-->
    16.  <context:property-placeholder location="classpath:dbconfig.properties"/>
    17.  <bean class="com.mchange.v2.c3p0.ComboPooledDataSource" id="comboPooledDataSource">
    18.      <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
    19.      <property name="driverClass" value="${jdbc.driverClass}"/>
    20.      <property name="user" value="${jdbc.user}"/>
    21.      <property name="password" value="${jdbc.password}"/>
    22.  </bean>
    24.  <!--整合mybatis-->
    25.  <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
    26.      <!--指定mybatis配置文件位置-->
    27.      <property name="configLocation" value="classpath:mybatis-config.xml"/>
    28.      <!--指定数据源-->
    29.      <property name="dataSource" ref="comboPooledDataSource"/>
    30.      <!--指定mapper文件的路径-->
    31.      <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    32.  </bean>
    33.  <!--配置mybatis的dao接口扫码路径-->
    34.  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    35.      <!--扫描所有dao接口，放入IOC容器中-->
    36.      <property name="basePackage" value="com.lyc.crud.dao"/>
    37.  </bean>
    39.  <!--配置事务-->
    40.  <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="transactionManager">
    41.      <!--要控制的数据源-->
    42.      <property name="dataSource" ref="comboPooledDataSource"/>
    43.  </bean>
    44.  <!--要AOP事务切入的方法-->
    45.  <aop:config>
    46.      <!--配置要切入的方法-->
    47.        <!--所有访问权限控制 com.lyc.crud.service.. 包下的所有包，*(..) 所有类下的任意参数方法-->
    48.      <aop:pointcut id="txPointcut" expression="execution(* com.lyc.crud.service..*(..))"/>
    49.      <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
    50.  </aop:config>
    51.  <!--配置事务增强-->
    52.  <tx:advice id="txAdvice" transaction-manager="transactionManager">
    53.      <tx:attributes>
    54.          <!--所有方法都是事务方法-->
    55.          <tx:method name="*"/>
    56.          <!--所有get开头的方法，read-only，查询方法提高效率-->
    57.          <tx:method name="get*" read-only="true"/>
    58.      </tx:attributes>
    59.  </tx:advice>
    60. </beans>

    mybatis.xml

    mybatis配置可以在spring的配置文件中配置，但是为了清晰一点，有的配置还是由专门的mybatis配置文件来配置

    1. <?xml version="1.0" encoding="UTF-8" ?>
    2. <!DOCTYPE configuration
    3.      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
    4.      "http://mybatis.org/dtd/mybatis-3-config.dtd">
    5. <configuration>
    6.  <settings>
    7.      <setting name="mapUnderscoreToCamelCase" value="true"/>
    8.  </settings>
    9.  <typeAliases>
    10.      <package name="com.lyc.crud.dao"/>
    11.  </typeAliases>
    12. </configuration>

    mybatis generator

    mybatis的生成器，通过配置，可以快速生成Java bean对象和基本的CRUD语句
    引入jar包

    1.  <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
    2.  <dependency>
    3.    <groupId>org.mybatis.generator</groupId>
    4.    <artifactId>mybatis-generator-core</artifactId>
    5.    <version>1.4.0</version>
    6.  </dependency>

    配置生成规则 ```xml <?xml version=”1.0” encoding=”UTF-8”?> <!DOCTYPE generatorConfiguration

    1.  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
    2.  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

    1.  <!-- 生成的Java文件的编码 -->
    2.  <property name="javaFileEncoding" value="UTF-8" />
    3.  <!-- beginningDelimiter和endingDelimiter：指明数据库的用于标记数据库对象名的符号，比如ORACLE就是双引号，MYSQL默认是`反引号； -->
    4.  <property name="beginningDelimiter" value="`" />
    5.  <property name="endingDelimiter" value="`" />
    7.  <!-- 注释生成器 -->
    8.  <commentGenerator>
    9.      <property name="suppressDate" value="true" />
    10.      <property name="suppressAllComments" value="true" />
    11.  </commentGenerator>
    13.  <!-- 必须要有的，使用这个配置链接数据库 @TODO:是否可以扩展 -->
    14.  <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
    15.                  connectionURL="jdbc:mysql://localhost:3306/ssm_crud"
    16.                  userId="root"
    17.                  password="root">
    18.  </jdbcConnection>
    20.  <javaTypeResolver>
    21.      <property name="forceBigDecimals" value="false"/>
    22.  </javaTypeResolver>
    24.  <!-- 生成javabean 对象目录 -->
    25.  <javaModelGenerator targetPackage="com.lyc.crud.entity" targetProject=".\src\main\java">
    26.      <property name="enableSubPackages" value="true" />
    27.  </javaModelGenerator>
    29.  <!-- 指定SQL MAPPER目录 -->
    30.  <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources">
    31.      <property name="enableSubPackages" value="true" />
    32.  </sqlMapGenerator>
    34.  <!-- 指定生成的DAO目录 -->
    35.  <javaClientGenerator targetPackage="com.lyc.crud.dao" type="XMLMAPPER"
    36.                       targetProject=".\src\main\java">
    37.      <property name="enableSubPackages" value="true" />
    38.  </javaClientGenerator>
  1.     <!-- ============================================================================== -->
  2.     <!--domainObjectName="User"-->
  3.     <table tableName="tbl_emp" domainObjectName="Employ">
  4.     </table>
  5.     <table tableName="tbl_dept" domainObjectName="Department"></table>
  6.     <!-- ============================================================================= -->
  7. </context>

  1. 新建一个类，启动该类main方法，执行下列代码
  2. ```java
  3. public class MBG {
  4.     public static void main(String[] args) throws Exception {
  5.         List<String> warnings = new ArrayList<String>();
  6.         boolean overwrite = true;
  7.         File configFile = new File("mybatis-generator-config.xml");
  8.         ConfigurationParser cp = new ConfigurationParser(warnings);
  9.         Configuration config = cp.parseConfiguration(configFile);
  10.         DefaultShellCallback callback = new DefaultShellCallback(overwrite);
  11.         MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
  12.         myBatisGenerator.generate(null);
  13.     }
  14. }