Java-web配置

• 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">
      <!-- 注册DispatcherServlet -->
      <servlet>
          <servlet-name>app1</servlet-name>
          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
          <init-param>
              <!-- 关联配置文件 -->
              <param-name>contextConfigLocation</param-name>
              <param-value>classpath:spring-mvc.xml</param-value>
          </init-param>
          <!-- 启动级别 -->
          <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
          <servlet-name>app1</servlet-name>
          <url-pattern>/</url-pattern><!-- / 不包括.jsp， /* 包括.jsp -->
      </servlet-mapping>
      
      <!-- 注册乱码过滤器 -->
      <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>
          <!-- 务必带“*”，否则过滤不了 -->
          <url-pattern>/*</url-pattern>
      </filter-mapping>
  </web-app>