[英]Unable to run Spring Boot WebMVC with Thymeleaf support
我进行了很多搜索,但是没有找到问题的答案,因此,我在此处发布问题。 请查看并向我提出我误解的解决方案。
我已经使用Spring Tool Suite(STS)创建了带有百里香支持的spring boot web mvc项目。 当我运行它时,请给我“ Whitelabel错误页面”页面。 这意味着找不到映射。
努力:
WebConfig.java
package com.springthymeleaf.config;
import org.springframework.boot.context.embedded.ServletRegistrationBean;
import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.ReloadableResourceBundleMessageSource;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.thymeleaf.spring4.SpringTemplateEngine;
import org.thymeleaf.spring4.view.ThymeleafViewResolver;
import org.thymeleaf.templateresolver.ServletContextTemplateResolver;
@Configuration
@ComponentScan("com.springthymeleaf")
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {
@Bean
ServletRegistrationBean servletRegistration(){
ServletRegistrationBean registrationBean = new ServletRegistrationBean();
registrationBean.addUrlMappings("/console/*");
return registrationBean;
}
//start Thymeleaf specific configuration
@Bean(name ="templateResolver")
public ServletContextTemplateResolver getTemplateResolver() {
ServletContextTemplateResolver templateResolver = new ServletContextTemplateResolver();
// templateResolver.setPrefix("/templates/");
templateResolver.setSuffix(".html");
templateResolver.setTemplateMode("XHTML");
return templateResolver;
}
@Bean(name ="templateEngine")
public SpringTemplateEngine getTemplateEngine() {
SpringTemplateEngine templateEngine = new SpringTemplateEngine();
templateEngine.setTemplateResolver(getTemplateResolver());
return templateEngine;
}
@Bean(name="viewResolver")
public ThymeleafViewResolver getViewResolver(){
ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
viewResolver.setTemplateEngine(getTemplateEngine());
return viewResolver;
}
//end Thymeleaf specific configuration
@Bean(name ="messageSource")
public MessageSource getMessageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasename("/WEB-INF/i18/thymeleafResource");
messageSource.setDefaultEncoding("UTF-8");
return messageSource;
}
}
SecurityConfiguration.java
package com.springthymeleaf.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
@Configuration
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
@Override
protected void configure(HttpSecurity httpSecurity) throws Exception {
httpSecurity.authorizeRequests().antMatchers("/").permitAll();
}
}
ServletInitializer.java
package com.springthymeleaf;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
public class ServletInitializer extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(SpringThymeLeafApplication.class);
}
}
SpringThymeLeafApplication.java
package com.springthymeleaf;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringThymeLeafApplication {
public static void main(String[] args) {
SpringApplication.run(SpringThymeLeafApplication.class, args);
}
}
IndexController.java
package com.springthymeleaf.controllers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class IndexController {
@RequestMapping("/")
public String index(){
return "index";
}
}
我已经在resources / templates文件夹中创建了index.html
文件。 我仍然收到该错误。 我在网上进行了很多搜索,但没有得到任何线索。 请有人帮我。
实际上,Spring Boot是开箱即用地配置Thymeleaf的。 它应与以下设置一起使用:
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter
{
@Override
protected void configure(HttpSecurity http) throws Exception
{
http
.authorizeRequests()
.anyRequest().authenticated()
.and()
.formLogin().loginPage("/login").defaultSuccessUrl("/").permitAll() // http://docs.spring.io/spring-security/site/docs/4.0.3.RELEASE/reference/htmlsingle/#jc-form
.and()
.logout().permitAll(); // http://docs.spring.io/spring-security/site/docs/4.0.3.RELEASE/reference/htmlsingle/#jc-logout
}
@Override
public void configure(WebSecurity web) throws Exception
{
web
.ignoring()
.antMatchers("/resources/**"/*, ... */);
}
}
@Controller
public class LoginController
{
@RequestMapping("/login")
static String login(Model model)
{
return "login";
}
}
Spring Boot已经为您配置了Thymeleaf,因此无需手动配置。 删除所有与Thymeleaf相关的配置,同时也删除@EnableWebMvc
因为这会干扰Spring Boot自动配置。 @ComponentScan
也是多余的。
Spring Boot还为您注册了一个MessageSource
,因此无需进行配置。 不知道您要进行什么servlet注册,但这是您唯一需要的。
另外,我建议删除控制器,并使用可以在WebConfig
类中配置的视图控制器。 为您节省控制器。
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
@Bean
ServletRegistrationBean servletRegistration(){
ServletRegistrationBean registrationBean = new ServletRegistrationBean();
registrationBean.addUrlMappings("/console/*");
return registrationBean;
}
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("index");
}
}
要让自动配置的消息源提取您的自定义捆绑包,请将以下内容添加到src/main/resources/application.properties
。
spring.messages.basename=/WEB-INF/i18/thymeleafResource
我还建议简单地让SpringThymeLeafApplication
扩展SpringBootServletInitializer
。
@SpringBootApplication
public class SpringThymeLeafApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(SpringThymeLeafApplication.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(SpringThymeLeafApplication.class);
}
}
还要确保您的模板位于src/main/resources/templates
,而不位于src/main/resources/resources/templates
否则将找不到这些src/main/resources/resources/templates
。
当您添加百里香依赖时,Spring Boot会执行所有自动配置。 那么您应该执行以下操作。
如果使用的是Maven,请确保pom.xml具有以下依赖关系;如果使用的是gradle,请确保在spring网站上找到相应的依赖项:
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency>
第三,确保您扫描了控制器的位置,在SpringThymeLeafApplication.java中添加以下内容:
@ComponentScan(basePackages =“ your.path.to.controllers”)
最后,您必须将.html文件添加到资源/模板中
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