SpringMVC笔记——SpringMVC配置类取代xml配置

news/2024/10/18 22:37:08/

什么是SpringMVC配置类

SpringMVC配置类是一个用来配置SpringMVC的类，它通常包含了一些SpringMVC的基本设置，例如视图解析器、拦截器、消息转换器等。

1.创建SpringConfig

java">@Configuration  
public class SpringConfig {  
}

xml_15">2.创建SpringMVC初始类（代替web.xml)

初始类需要继承 `AbstractAnnotationConfigDispatcherServletInitializer`

java">public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {/*** 指定spring的配置文件* @return*/@Overrideprotected Class<?>[] getRootConfigClasses() {return new Class[]{SpringConfig.class};}/*** 指定SpringMVC的配置文件* @return*/@Overrideprotected Class<?>[] getServletConfigClasses() {return new Class[]{WebConfig.class};}/*** 指定Mapping映射规则* @return*/@Overrideprotected String[] getServletMappings() {return new String[]{"/"};}/*** 注册过滤器* @return Filter[]*/@Overrideprotected Filter[] getServletFilters() {CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();characterEncodingFilter.setEncoding("UTF-8");characterEncodingFilter.setForceEncoding(true);HiddenHttpMethodFilter hiddenHttpMethodFilter = new HiddenHttpMethodFilter();return new Filter[] {characterEncodingFilter, hiddenHttpMethodFilter};}
}

xml_64">3. 创建SpringMVC配置类（代替SpringMVC.xml）

java">// 标识为配置类  
@Configuration  
// 扫描控制层  
@ComponentScan(basePackages = "com.zxb.controller")  
public class WebConfig {  // 配置生成模板解析器  @Bean  public ITemplateResolver templateResolver() {  WebApplicationContext webApplicationContext = ContextLoader.getCurrentWebApplicationContext();  // ServletContextTemplateResolver需要一个ServletContext作为构造参数，可通过WebApplicationContext 的方法获得  ServletContextTemplateResolver templateResolver = new ServletContextTemplateResolver(  webApplicationContext.getServletContext());  templateResolver.setPrefix("/WEB-INF/templates/");  templateResolver.setSuffix(".html");  templateResolver.setCharacterEncoding("UTF-8");  templateResolver.setTemplateMode(TemplateMode.HTML);  return templateResolver;  }  //生成模板引擎并为模板引擎注入模板解析器  @Bean  public SpringTemplateEngine templateEngine(ITemplateResolver templateResolver) {  SpringTemplateEngine templateEngine = new SpringTemplateEngine();  templateEngine.setTemplateResolver(templateResolver);  return templateEngine;  }  //生成视图解析器并未解析器注入模板引擎  @Bean  public ViewResolver viewResolver(SpringTemplateEngine templateEngihgne) {  ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();  viewResolver.setCharacterEncoding("UTF-8");  viewResolver.setTemplateEngine(templateEngine);  return viewResolver;  }  
}