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问题：

Thymeleaf with Spring MVC错误找不到URI为的HTTP请求的映射

叶元凯
2023-03-14

我使用的是从web下载的代码，是Spring MVC Hibernate Maven Spring数据的一个示例，在这段代码中，页面是jsp。现在我想介绍Thymeleaf而不是jsp si，我已经创建了一个HTML问候页面，但是当我进入这个页面时，我得到了这个错误

09:16:23.622[http-nio-8080-exec-7]警告o.s.web。servlet。PageNotFound-在名为“dispatcher”的DispatcherServlet中找不到URI为[/dpr data/WEB-INF/pages/greeting.html]的HTTP请求的映射

以下是我的文件代码：

控制器

package com.spr.controller;

import java.util.List;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import com.spr.exception.ShopNotFound;
import com.spr.model.Shop;
import com.spr.service.ShopService;
import com.spr.validation.ShopValidator;

@Controller
@RequestMapping(value="/shop")
public class ShopController {

    @Autowired
    private ShopService shopService;

    @Autowired
    private ShopValidator shopValidator;

    //Used to validate data
    @InitBinder
    private void initBinder(WebDataBinder binder) {
        binder.setValidator(shopValidator);
    }

    @RequestMapping(value="/create", method=RequestMethod.GET)
    public ModelAndView newShopPage() {
        ModelAndView mav = new ModelAndView("shop-new", "shop", new Shop());
        return mav;
    }

    //@Valid means that shop has to be validate
    @RequestMapping(value="/create", method=RequestMethod.POST)
    public ModelAndView createNewShop(@ModelAttribute @Valid Shop shop,
            BindingResult result,
            final RedirectAttributes redirectAttributes) {

        if (result.hasErrors())
            return new ModelAndView("shop-new");

        ModelAndView mav = new ModelAndView();
        String message = "New shop "+shop.getName()+" was successfully created.";

        shopService.create(shop);
        mav.setViewName("redirect:/index.jsp");

        redirectAttributes.addFlashAttribute("message", message);   
        return mav;     
    }

    @RequestMapping(value="/list", method=RequestMethod.GET)
    public ModelAndView shopListPage() {
        ModelAndView mav = new ModelAndView("shop-list.jsp");
        List<Shop> shopList = shopService.findAll();
        mav.addObject("shopList", shopList);
        return mav;
    }

    @RequestMapping(value="/edit/{id}", method=RequestMethod.GET)
    public ModelAndView editShopPage(@PathVariable Integer id) {
        ModelAndView mav = new ModelAndView("shop-edit");
        Shop shop = shopService.findById(id);
        mav.addObject("shop", shop);
        return mav;
    }

    @RequestMapping(value="/edit/{id}", method=RequestMethod.POST)
    public ModelAndView editShop(@ModelAttribute @Valid Shop shop,
            BindingResult result,
            @PathVariable Integer id,
            final RedirectAttributes redirectAttributes) throws ShopNotFound {

        if (result.hasErrors())
            return new ModelAndView("shop-edit");

        ModelAndView mav = new ModelAndView("redirect:/index.html");
        String message = "Shop was successfully updated.";

        shopService.update(shop);

        redirectAttributes.addFlashAttribute("message", message);   
        return mav;
    }

    @RequestMapping(value="/delete/{id}", method=RequestMethod.GET)
    public ModelAndView deleteShop(@PathVariable Integer id,
            final RedirectAttributes redirectAttributes) throws ShopNotFound {

        ModelAndView mav = new ModelAndView("redirect:/index.jsp");     

        Shop shop = shopService.delete(id);
        String message = "The shop "+shop.getName()+" was successfully deleted.";

        redirectAttributes.addFlashAttribute("message", message);
        return mav;
    }

    @RequestMapping(value="/greeting", method=RequestMethod.GET)
public String greeting(@RequestParam(value="name", required=false, defaultValue="World") String name, Model model) {
    model.addAttribute("name", name);
    return "greeting";
}

}

WebAppConfig：

    package com.spr.init;

import java.util.*;
import java.util.Properties;

import javax.annotation.Resource;
import javax.sql.DataSource;

import org.thymeleaf.dialect.*;
import org.hibernate.jpa.HibernatePersistenceProvider;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.core.env.Environment;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.JstlView;
import org.springframework.web.servlet.view.UrlBasedViewResolver;
import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.view.ThymeleafViewResolver;
import org.thymeleaf.templateresolver.ServletContextTemplateResolver;

import nz.net.ultraq.thymeleaf.LayoutDialect;

@Configuration
@EnableWebMvc
@EnableTransactionManagement
@ComponentScan("com.spr")
@PropertySource("classpath:application.properties")
@EnableJpaRepositories("com.spr.repository")
public class WebAppConfig {

    private static final String PROPERTY_NAME_DATABASE_DRIVER = "db.driver";
    private static final String PROPERTY_NAME_DATABASE_PASSWORD = "db.password";
    private static final String PROPERTY_NAME_DATABASE_URL = "db.url";
    private static final String PROPERTY_NAME_DATABASE_USERNAME = "db.username";

    private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect";
    private static final String PROPERTY_NAME_HIBERNATE_SHOW_SQL = "hibernate.show_sql";
    private static final String PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN = "entitymanager.packages.to.scan";

    @Resource
    private Environment env;

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();

        dataSource.setDriverClassName(env.getRequiredProperty(PROPERTY_NAME_DATABASE_DRIVER));
        dataSource.setUrl(env.getRequiredProperty(PROPERTY_NAME_DATABASE_URL));
        dataSource.setUsername(env.getRequiredProperty(PROPERTY_NAME_DATABASE_USERNAME));
        dataSource.setPassword(env.getRequiredProperty(PROPERTY_NAME_DATABASE_PASSWORD));

        return dataSource;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(dataSource());
        entityManagerFactoryBean.setPersistenceProviderClass(HibernatePersistenceProvider.class);
        entityManagerFactoryBean.setPackagesToScan(env.getRequiredProperty(PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN));

        entityManagerFactoryBean.setJpaProperties(hibProperties());

        return entityManagerFactoryBean;
    }

    private Properties hibProperties() {
        Properties properties = new Properties();
        properties.put(PROPERTY_NAME_HIBERNATE_DIALECT, env.getRequiredProperty(PROPERTY_NAME_HIBERNATE_DIALECT));
        properties.put(PROPERTY_NAME_HIBERNATE_SHOW_SQL, env.getRequiredProperty(PROPERTY_NAME_HIBERNATE_SHOW_SQL));
        return properties;
    }

    @Bean
    public JpaTransactionManager transactionManager() {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
        return transactionManager;
    }

//  @Bean
//  public UrlBasedViewResolver setupViewResolver() {
//      UrlBasedViewResolver resolver = new UrlBasedViewResolver();
//      resolver.setPrefix("/WEB-INF/pages/");
////        resolver.setSuffix(".jsp");
//      resolver.setViewClass(JstlView.class);
//      return resolver;
//  }

    @Bean
    public ResourceBundleMessageSource messageSource() {
        ResourceBundleMessageSource source = new ResourceBundleMessageSource();
        source.setBasename(env.getRequiredProperty("message.source.basename"));
        source.setUseCodeAsDefaultMessage(true);
        return source;
    }

    @Bean
    public ServletContextTemplateResolver templateResolver() {
        ServletContextTemplateResolver resolver = new ServletContextTemplateResolver();
        resolver.setPrefix("/");
        resolver.setSuffix(".html");
        resolver.setTemplateMode("HTML5");
        return resolver;
    }

    @Bean
    public SpringTemplateEngine templateEngine() {
        Set<IDialect> dialects = new HashSet<IDialect>();
        dialects.add(new LayoutDialect());

        SpringTemplateEngine engine = new SpringTemplateEngine();
        engine.setTemplateResolver(templateResolver());
        engine.setAdditionalDialects(dialects);
        return engine;
    }

    @Bean
    public ThymeleafViewResolver viewResolver() {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine());
        resolver.setOrder(1);
        resolver.setViewNames(new String[]{"*", "js/*", "template/*"});
        return resolver;
    }

}

初始值设定项

package com.spr.init;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration.Dynamic;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

public class Initializer implements WebApplicationInitializer {

    private static final String DISPATCHER_SERVLET_NAME = "dispatcher";

    public void onStartup(ServletContext servletContext)
            throws ServletException {
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(WebAppConfig.class);
        servletContext.addListener(new ContextLoaderListener(ctx));

        ctx.setServletContext(servletContext);

        Dynamic servlet = servletContext.addServlet(DISPATCHER_SERVLET_NAME,
                new DispatcherServlet(ctx));
        servlet.addMapping("/");
        servlet.setLoadOnStartup(1);
    }

}

web.xml

    <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">

    <display-name>spr-data</display-name>

</web-app>

pom文件

    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>
    <groupId>spr-data</groupId>
    <artifactId>spr-data</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>spr-data</name>

    <build>
        <finalName>dpr-data</finalName>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <!-- Spring dependencies -->



        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.2.1.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>1.9.0.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>

        <!-- Thymeleaf dependecies -->
        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring4</artifactId>
            <version>2.1.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>nz.net.ultraq.thymeleaf</groupId>
            <artifactId>thymeleaf-layout-dialect</artifactId>
            <version>1.3.0</version>
        </dependency>



        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.6</version>
        </dependency>

        <!-- dependency to fix JSPServletException -->
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jsp-api</artifactId>
            <version>8.0.26</version>
        </dependency>


        <!-- Hibernate dependencies -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.0.1.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.2.1.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.0.1.Final</version>
        </dependency>

        <!-- MySQL dependncies -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.36</version>
        </dependency>

        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>1.1.0.Final</version>
        </dependency>

        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- slf4j -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.7</version>
        </dependency>
        <!-- logback -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.1.2</version>
        </dependency>
        <!-- log4jdbc -->
        <dependency>
            <groupId>com.googlecode.log4jdbc</groupId>
            <artifactId>log4jdbc</artifactId>
            <version>1.2</version>
            <scope>runtime</scope>
        </dependency>
    </dependencies>

</project>

项目结构

有什么问题吗？谢谢

共有1个答案

方英耀
2023-03-14

我在你的代码中没有看到任何thymeleaf配置。尝试将以下内容添加到配置类中

    @Bean
    public ServletContextTemplateResolver templateResolver() {
        ServletContextTemplateResolver resolver = new ServletContextTemplateResolver();
        resolver.setPrefix("/");
        resolver.setSuffix(".html");
        resolver.setTemplateMode("HTML5");
        return resolver;
    }

    @Bean
    public SpringTemplateEngine templateEngine() {
        Set<IDialect> dialects = new HashSet<IDialect>();
        dialects.add(new LayoutDialect());

        SpringTemplateEngine engine = new SpringTemplateEngine();
        engine.setTemplateResolver(templateResolver());
        engine.setAdditionalDialects(dialects);
        return engine;
    }

    @Bean
    public ThymeleafViewResolver viewResolver() {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine());
        resolver.setOrder(1);
        resolver.setViewNames(new String[]{"*", "js/*", "template/*"});
        return resolver;
    }

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