mybatis plus第二讲 web.xml文件

た入场券 2022-05-23 04:21 185阅读 0赞

web.xml文件是项目的总的配置文件，本来所有的配置都应该写在这里，但是因为都写在这里会导致web.xml文件太大，层次感不强，所以分成：spring-mybatis.xml、spring-mvc.xml、log4j.properties三个文件，最后将这三个文件都在web.xml文件中“登记”。

spring-mybatis.xml是将spring和mybaits整合在一起，即spring接管了mybatis数据库的连接之类的。

因为spring-mvc太强大，spring有点管不住它了，所以把spring-mvc的配置作为一个单独的文件来弄，

log4j.properties是ssm在运行时，一些出错信息要处理，所以是属于“内部定制”的，因此也必须要有。

web.xml文件如下：

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_3\_0.xsd" id="WebApp\_ID" version="3.0">  
  
<display-name>mybatisplus</display-name>  
  
<welcome-file-list>  
<welcome-file>/index.jsp</welcome-file>  
</welcome-file-list>

<session-config>

<session-timeout>60</session-timeout>  
</session-config>  
  
<filter>  
<filter-name>encode</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>encode</filter-name>  
 <url-pattern>/\*</url-pattern>

</filter-mapping>

<context-param>  
<param-name>log4jConfigLocation</param-name>  
<param-value>classpath:log4j.properties</param-value>  
</context-param>  
<listener>  
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>  
</listener>  
  
<context-param>  
<param-name>contextConfigLocation</param-name>  
<param-value>  
 classpath:spring-mybatis.xml  
</param-value>  
</context-param>  
  
  
<listener>  
<listener-class>  
org.springframework.web.context.ContextLoaderListener  
</listener-class>  
</listener>  
  
  
<listener>  
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>  
</listener>  
  
  
<listener>  
<listener-class>  
org.springframework.web.context.request.RequestContextListener  
</listener-class>  
</listener>  
  
<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:spring-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>  
  
</web-app>