SpringMvc - 导入的包以及配置文件

1.要导入的包

pom.xml

  <!--版本控制-->
  <properties>
    <spring.version>5.3.13</spring.version>
  </properties>

  <dependencies>
    <!--spring mvc start-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--spring mvc end-->

    <!--servlet-api start-->
    <dependency>
      <groupId>org.apache.tomcat</groupId>
      <artifactId>tomcat-servlet-api</artifactId>
      <version>9.0.54</version>
    </dependency>
    <!--servlet-api end-->

    <!--thymeleaf start-->
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf</artifactId>
      <version>3.0.11.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf-spring4</artifactId>
      <version>3.0.11.RELEASE</version>
    </dependency>
    <!--thymeleaf end-->

    <!--fastjson start-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.78</version>
    </dependency>
    <!--fastjson end-->
  </dependencies>

 

2.注册DispatcherServlet

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
          http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <!--1.springmvc 前端控制器 -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--1.1初始化参数-->
        <init-param>
            <!--1.2加载配置文件-->
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc-servlet.xml</param-value>
        </init-param>
        <!--
        当值为0或者大于0时，表示容器在应用启动时就加载并初始化这个servlet
        当值小于0或者没有指定时，则表示容器在该servlet被选择时才会去加载。
        正数的值越小，该servlet的优先级越高，应用启动时就越先加载。-->
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!--2.注册dispatcherServlet-->
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <!--
        /：接收不到.jsp的请求
        /*：能接收到.jsp的请求
        -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--3.配置乱码过滤器(主要解决post请求乱码)-->
    <filter>
        <filter-name>encoding</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>encoding</filter-name>
        <url-pattern>/</url-pattern>
    </filter-mapping>
</web-app>