将web.xml和SpringMVC核心配置文件全都替换注解
创建一个config目录，在该目录下添加以下3个类
一. 创建初始化类代替web.xmlpackage com.mvc.config;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import javax.servlet.Filter;
//web工程的初始化类，用来代替web.xml
public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {
//指定spring的配置类
@Override
protected Class[] getRootConfigClasses() {
return new Class[]{SpringConfig.class};
}
//指定SpringMVC的配置类
@Override
protected Class[] getServletConfigClasses() {
return new Class[]{WebConfig.class};
}
//指定DispatcherServlet的映射规则，即url-pattern
@Override
protected String[] getServletMappings() {
return new String[]{"/"};
}
//添加过滤器
@Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter encodingFilter = new CharacterEncodingFilter();
encodingFilter.setEncoding("UTF-8");
encodingFilter.setForceRequestEncoding(true);
HiddenHttpMethodFilter hiddenHttpMethodFilter = new HiddenHttpMethodFilter();
return new Filter[]{encodingFilter, hiddenHttpMethodFilter};
}
}
二. 创建SpringConfig配置类，代替spring的配置文件
package com.mvc.config;
import org.springframework.context.annotation.Configuration;
@Configuration //添加@Configuration让类成为配置类
public class SpringConfig {
}
三. 创建WebConfig配置类，代替SpringMVC的配置文件
package com.mvc.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.thymeleaf.spring5.SpringTemplateEngine;
import org.thymeleaf.spring5.view.ThymeleafViewResolver;
import org.thymeleaf.templatemode.TemplateMode;
import org.thymeleaf.templateresolver.ITemplateResolver;
import org.thymeleaf.templateresolver.ServletContextTemplateResolver;
@Configuration //让当前类成为配置类
@ComponentScan("com.mvc.controller") //开启扫描组件
@EnableWebMvc //开启MVC注解驱动
public class WebConfig implements WebMvcConfigurer {
//配置生成模板解析器
@Bean
public ITemplateResolver templateResolver() {
WebApplicationContext webApplicationContext = ContextLoader.getCurrentWebApplicationContext();
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 templateEngine) {
ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
viewResolver.setCharacterEncoding("UTF-8");
viewResolver.setTemplateEngine(templateEngine);
return viewResolver;
}
//使用默认的servlet处理静态资源
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
//配置文件上传解析器
@Bean
public CommonsMultipartResolver multipartResolver(){
return new CommonsMultipartResolver();
}
//配置拦截器
//配置视图控制(设置了该方法，则不需要再配置转发到index页面的控制器方法)，如果是其他静态页面，也可以这样进行设置
//配置异常映射
}
四. 测试
package com.mvc.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class TestController {
@RequestMapping("/")
public String index() {
return "index";
}
@RequestMapping("/testPage")
public String goToPage(){
return "test";
}
}
Title
index.html页面
访问test.html
五. 使用JSP视图解析器
将WebConfig配置类中的Thymeleaf视图解析器替换为JSP视图解析器
package com.mvc.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration //让当前类成为配置类
@ComponentScan("com.mvc.controller") //开启扫描组件
@EnableWebMvc //开启MVC注解驱动
public class WebConfig implements WebMvcConfigurer {
// 配置JSP视图解析器
@Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/templates/");
resolver.setSuffix(".jsp");
resolver.setViewClass(org.springframework.web.servlet.view.JstlView.class);
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}
//使用默认的servlet处理静态资源
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
//配置文件上传解析器
@Bean
public CommonsMultipartResolver multipartResolver(){
return new CommonsMultipartResolver();
}
//配置拦截器
//配置视图控制(设置了该方法，则不需要再配置转发到index页面的控制器方法)，如果是其他静态页面，也可以这样进行设置
//配置异常映射
}
将页面全部替换为JSP页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
Title
index.jsp页面
访问test.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>Title test.jsp页面
需要添加JSTL和EL的依赖
javax.servlet.jsp
javax.servlet.jsp-api
2.3.3
javax.servlet.jsp.jstl
jstl-api
1.2
taglibs
standard
1.1.2
