标签：app pac web startup 内容 new Fix .com 初始化
*如果你需要将应用部署到不支持Servlet3.0容器中 或者 你只是对web.xml情有独钟，那我们只能按照传统的方式，通过web.xml来配置SpringMVC。
*搭建SpringMVC需要在web.xml中注册DispatcherServlet和ContextLoaderListener，同时他们两个之间会分别通过上下文参数contextConfigLocation指定一个XML文件地址来加载Spring应用上下文，而我更倾向于使用Java配置类来加载Spring应用上下文（本文也是如此）。
（1）pom中添加SpringMVC相关jar
1 <dependency> 2 <groupId>org.springframework</groupId> 3 <artifactId>spring-webmvc</artifactId> 4 <version>4.3.21.RELEASE</version> 5 </dependency>
（2）设置web.xml文件（使用Java配置类来加载Spring应用上下文）
*要在SpringMVC中使用Java配置类来构建Spring应用上下文，我们需要配置DispatcherServlet和ContextLoaderListener的contextClass上下文参数为AnnotationConfigWebApplicationContext，AnnotationConfigWebApplicationContext是WebApplicationContext的实现类，它会加载Java配置类而不是XML文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns="http://java.sun.com/xml/ns/javaee" 4 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 5 id="WebApp_ID" version="2.5"> 6 <!--指定根配置使用Java配置类--> 7 <context-param> 8 <param-name>contextClass</param-name> 9 <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value> 10 </context-param> 11 <!--指定根配置Java配置类所在路径--> 12 <context-param> 13 <param-name>contextConfigLocation</param-name> 14 <param-value>cn.coreqi.config.RootConfig</param-value> 15 </context-param> 16 <!--注册ContextLoaderListener--> 17 <listener> 18 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 19 </listener> 20 <!--注册DispatcherServlet--> 21 <servlet> 22 <servlet-name>dispatcherServlet</servlet-name> 23 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 24 <!--指定DispatcherServlet配置使用Java配置类--> 25 <init-param> 26 <param-name>contextClass</param-name> 27 <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value> 28 </init-param> 29 <!--指定DispatcherServlet配置Java配置类所在路径--> 30 <init-param> 31 <param-name>contextConfigLocation</param-name> 32 <param-value>cn.coreqi.config.WebConfig</param-value> 33 </init-param> 34 <!--这是启动优先级吧--> 35 <load-on-startup>1</load-on-startup> 36 </servlet> 37 <!--DispatcherServlet映射--> 38 <servlet-mapping> 39 <servlet-name>dispatcherServlet</servlet-name> 40 <url-pattern>/</url-pattern> 41 </servlet-mapping> 42 </web-app>
（3）根配置类（初始化项目，所以没啥内容）
1 package cn.coreqi.config; 2 3 import org.springframework.context.annotation.Configuration; 4 5 @Configuration 6 public class RootConfig { 7 }
（4）DispatcherServlet配置类
1 package cn.coreqi.config; 2 3 import org.springframework.context.annotation.Bean; 4 import org.springframework.context.annotation.ComponentScan; 5 import org.springframework.context.annotation.Configuration; 6 import org.springframework.web.servlet.ViewResolver; 7 import org.springframework.web.servlet.config.annotation.*; 8 import org.thymeleaf.TemplateEngine; 9 import org.thymeleaf.spring4.SpringTemplateEngine; 10 import org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver; 11 import org.thymeleaf.spring4.view.ThymeleafViewResolver; 12 import org.thymeleaf.templatemode.TemplateMode; 13 import org.thymeleaf.templateresolver.ITemplateResolver; 14 15 @Configuration 16 @EnableWebMvc //启用Spring MVC 注解驱动 <mvc:annotation-driven /> 17 @ComponentScan("cn.coreqi.controller") 18 public class WebConfig extends WebMvcConfigurerAdapter { 19 20 //配置Thymeleaf视图解析器 21 @Bean 22 public ViewResolver viewResolver(TemplateEngine templateEngine){ 23 ThymeleafViewResolver viewResolver = new ThymeleafViewResolver(); 24 viewResolver.setTemplateEngine(templateEngine); 25 viewResolver.setCharacterEncoding("utf-8"); 26 return viewResolver; 27 } 28 29 //创建模板引擎 30 @Bean 31 public TemplateEngine templateEngine(ITemplateResolver templateResolver){ 32 SpringTemplateEngine templateEngine = new SpringTemplateEngine(); 33 templateEngine.setTemplateResolver(templateResolver); 34 return templateEngine; 35 } 36 37 //创建Thymeleaf模板解析器 38 @Bean 39 public ITemplateResolver templateResolver(){ 40 SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver(); 41 resolver.setPrefix("/WEB-INF/templates/"); 42 resolver.setSuffix(".html"); 43 resolver.setTemplateMode(TemplateMode.HTML); 44 resolver.setCacheable(false); 45 resolver.setCharacterEncoding("utf-8"); 46 return resolver; 47 } 48 49 //配置对静态资源的处理 50 @Override 51 public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { 52 configurer.enable(); 53 } 54 55 }
标签：app pac web startup 内容 new Fix .com 初始化
原文地址：https://www.cnblogs.com/fanqisoft/p/10260829.html
