Spring Boot、Thymeleaf 和 @Controller [英] Spring Boot, Thymeleaf and @Controller

问题描述

我在玩 Spring Boot 并且有一些我不太明白的东西.我的应用程序中有 2 个 @Controller ，而第二个并没有真正接收 REST 调用，而是 Thymeleaf 正在处理请求.

基本上我所拥有的是:

@Configuration@ComponentScan@EnableAutoConfiguration公共类应用{public static void main(String[] args) 抛出 Throwable {SpringApplication.run(Application.class, args);}}

然后

@Configuration@EnableWebMvcSecurity@启用网络安全@EnableGlobalMethodSecurity(prePostEnabled=true)公共类 SecurityConfig 扩展了 WebSecurityConfigurerAdapter {@自动连线环境环境；@覆盖protected void configure(HttpSecurity http) 抛出异常 {http.authorizeRequests().antMatchers("/", "/home").permitAll().antMatchers("/webjars/**").permitAll().antMatchers("/console/**").permitAll().antMatchers("/resources/**").permitAll().anyRequest().authenticated();http.formLogin().loginPage("/login").permitAll().and().logout().permitAll();http.csrf().disable();//为 angularjs 提供便利http.headers().frameOptions().disable();//对于H2网络控制台}}

和

@Configuration公共类 WebMvcConfig 扩展了 WebMvcConfigurerAdapter {@覆盖public void addViewControllers(ViewControllerRegistry 注册表) {registry.addViewController("/home").setViewName("home");registry.addViewController("/").setViewName("home");registry.addViewController("/hello").setViewName("hello");registry.addViewController("/login").setViewName("login");}@覆盖public void addResourceHandlers(ResourceHandlerRegistry registry) {registry.addResourceHandler("/public/**").addResourceLocations("classpath:/public/");registry.addResourceHandler("/resources/**").addResourceLocations("classpath:/resources/");}}

还有两个控制器.这个有效，所以它从一个简单的 AngularJS 客户端接听我的电话并响应:

@Controller@RequestMapping("/foo")公共类 MyController {@RequestMapping(method = RequestMethod.GET)@ResponseBody@PreAuthorize("hasRole('ROLE_FOO')")公共字符串 getFoo() {返回 "foooooo";}}

这是生病的控制器，没有响应:

@Controller@RequestMapping("/sick/1")公共类 SickController {@自动连线SickRepositorysickRepository;@RequestMapping(method = RequestMethod.GET)公共生病 getSickById() {返回sickRepository.findOne(1);}}

显然，稍后我会将其更改为从 URL 中提取 ID 作为路径变量，但为了调试，我又回到了硬编码.

在我对 /sick/1 的请求到达之前，日志不会显示任何内容.那时我得到了这个:

org.thymeleaf.exceptions.TemplateInputException:解析模板sick/1"时出错，模板可能不存在或可能无法被任何配置的模板解析器访问在 org.thymeleaf.TemplateRepository.getTemplate(TemplateRepository.java:245)在 org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1104)

但是为什么它会转到模板引擎而不是我的控制器..?

解决方案

您可能在 getSickById 控制器方法上缺少 @ResponseBody 注释.

您还可以将 @Controller 注释替换为 @RestController，Spring 会将 @ResponseBody 应用于该控制器中的所有控制器方法.

I am playing around with Spring Boot and have something that I don't quite get. I have 2 @Controllers in my application, and the second one is not really picking up REST calls, Thymeleaf is jumping on the requests instead.

Basically what I have is:

@Configuration
@ComponentScan
@EnableAutoConfiguration
public class Application {
     public static void main(String[] args) throws Throwable {
            SpringApplication.run(Application.class, args);
     }
}

Then

@Configuration
@EnableWebMvcSecurity
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled=true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    Environment env;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
          .antMatchers("/", "/home").permitAll()
          .antMatchers("/webjars/**").permitAll()
          .antMatchers("/console/**").permitAll()
          .antMatchers("/resources/**").permitAll()
          .anyRequest().authenticated();
        http.formLogin().loginPage("/login").permitAll().and().logout()
                .permitAll();
        http.csrf().disable(); // for angularjs ease
        http.headers().frameOptions().disable(); //for H2 web console
    }
}

And

@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/home").setViewName("home");
        registry.addViewController("/").setViewName("home");
        registry.addViewController("/hello").setViewName("hello");
        registry.addViewController("/login").setViewName("login");
    }

    @Override
      public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/public/**").addResourceLocations("classpath:/public/");
        registry.addResourceHandler("/resources/**").addResourceLocations("classpath:/resources/");
      }

}

And the two controllers. This one works, so it is picking up my call from a simple AngularJS client and responds:

@Controller
@RequestMapping("/foo")
public class MyController {

    @RequestMapping(method = RequestMethod.GET)
    @ResponseBody
    @PreAuthorize("hasRole('ROLE_FOO')")
    public String getFoo() {
        return "foooooo";
    }
}

And this is the sick controller, not responding:

@Controller
@RequestMapping("/sick/1")
public class SickController {

    @Autowired
    SickRepository sickRepository;

    @RequestMapping(method = RequestMethod.GET)
    public Sick getSickById() {
        return sickRepository.findOne(1);
    }

}

Obviously later I'll change it to pull the ID from the URL as a path variable, but for debugging I went back to hardcoding.

The logs don't show anything until my request to /sick/1 arrive. At that point I am getting this:

org.thymeleaf.exceptions.TemplateInputException: Error resolving template "sick/1", template might not exist or might not be accessible by any of the configured Template Resolvers
    at org.thymeleaf.TemplateRepository.getTemplate(TemplateRepository.java:245)
    at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1104)

But why does it go to the template engine instead of my controller..?

解决方案

You are probably missing @ResponseBody annotation on the getSickById controller method.

You could also replace @Controller annotation with @RestController and Spring will apply @ResponseBody to all controller methods within that controller.

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