Thymeleaf Spring MVC 的 UTF-8 编码问题

Question

我对 UTF-8 字符有疑问。我已经尝试了很多解决方案，但没有什么对我有用。我现在拥有的：

• Tomcat (server.xml)：

  <Connector URIEncoding="UTF-8" useBodyEncodingForURI="true" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>
  

• 基础配置类：

  public class HomeInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
  @Override
  protected Class<?>[] getRootConfigClasses() {
      return new Class[] { WebSecurityConfig.class };
  }
  @Override
  protected Class<?>[] getServletConfigClasses() {
      return new Class[] { WebMvcConfiguration.class };
  }
  @Override
  protected String[] getServletMappings() {
      return new String[] { "/" };
  }
  @Override
  protected Filter[] getServletFilters() {
      CharacterEncodingFilter filter = new CharacterEncodingFilter();
      filter.setEncoding("UTF-8"); // forcing UTF-8
      filter.setForceEncoding(true);
      return new Filter[] { filter };
  }
  }
  

• 包含 Thymeleaf 配置的 WebMvcConfiguration 类：

  @Bean
  public ThymeleafViewResolver viewResolver() {
      ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
      viewResolver.setTemplateEngine(templateEngine());
      viewResolver.setCharacterEncoding("UTF-8"); // forcing UTF-8
      viewResolver.setContentType("text/html; charset=UTF-8");
      viewResolver.setOrder(1);
      viewResolver.setViewNames(new String[] { ".html", ".xhtml" });
      return viewResolver;
  }
  @Bean
  public SpringResourceTemplateResolver templateResolver() {
      SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
      templateResolver.setCharacterEncoding("UTF-8"); // forcing UTF-8
      templateResolver.setApplicationContext(applicationContext);
      templateResolver.setPrefix("/WEB-INF/views/");
      templateResolver.setSuffix(".html");
      templateResolver.setTemplateMode(TemplateMode.HTML);
      templateResolver.setCacheable(true);
      return templateResolver;
  }
  @Bean
  public SpringTemplateEngine templateEngine() {
      SpringTemplateEngine templateEngine = new SpringTemplateEngine();
      templateEngine.setTemplateResolver(templateResolver());
      templateEngine.setEnableSpringELCompiler(true);
      return templateEngine;
  }
  @Override
  public void configureViewResolvers(ViewResolverRegistry registry) {
      ThymeleafViewResolver resolver = new ThymeleafViewResolver();
      resolver.setTemplateEngine(templateEngine());
      registry.viewResolver(resolver);
  }
  

• WebSecurityConfig 包含其余配置：

  @Override
  protected void configure(HttpSecurity http) throws Exception {
      http.authorizeRequests().anyRequest().anonymous().antMatchers("/login**", "/*.js", "/*.css", "/*.svg").permitAll().anyRequest().authenticated()
                      .antMatchers("/login**").permitAll().and().formLogin().loginPage("/login").loginProcessingUrl("/login").usernameParameter("username")
                      .passwordParameter("password").defaultSuccessUrl("/", true).permitAll().and().logout()
                      .logoutRequestMatcher(new AntPathRequestMatcher("/logout")).logoutSuccessUrl("/login?logout").deleteCookies("JSESSIONID")
                      .invalidateHttpSession(true).permitAll();
      CharacterEncodingFilter filter = new CharacterEncodingFilter();
      filter.setEncoding("UTF-8"); // another forcing UTF-8
      filter.setForceEncoding(true);
      http.addFilterBefore(filter, CsrfFilter.class);
  }
  

• 所有 html 页面包含：

  <meta http-equiv='Content-Type' content='text/html; charset=UTF-8' />
  

• 在我添加 Thymeleaf 并使用 jsp 之前，我已经能够显示特殊字符

• 还检查了所有文件 (.html) 是否使用 UTF-8 编码
• Eclipse 设置已更改以将所有内容保留为 UTF-8
• 可能检查了 stackoverflow 上与此问题相关的所有答案，并验证了所有排名较高的答案（包括 this、this 和 that）
• 已检查 Thymeleaf 消息传递解决方案 (some stack question for that)
• 转义字符 \u0119 按原样显示 - \u0119
• 使用相同的pom.xml、Spring/Thymeleaf 配置创建了新项目

并且仍然而不是波兰语 ąęłźżńłó 我有 ???????ó 显示在页面上。有什么想法吗？

很遗憾我没有 web.xml 并且整个配置使用注释。 我无法控制 Filter 课程顺序 - 见can use @Order annotation

使用的技术：Spring Framework 5.1.6、Spring Security 5.1.5、Thymeleaf 3.0.11、Thymeleaf Spring security4 3.0.4、Maven 4、Tomcat 9。

Answer 1

很遗憾，我必须回答我自己的问题。

要从属性文件中读取 UTF-8 数据，只需使用 encoding 属性

@Component
@PropertySource(value = "classpath:config/data.properties", encoding = "UTF-8")

基本上帮助的是向configureViewResolvers 方法添加了一些额外的方法调用：

    @Override
    public void configureViewResolvers(ViewResolverRegistry registry) {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(templateEngine());
        resolver.setCharacterEncoding("UTF-8"); // <- this was added
        resolver.setForceContentType(true); // <- this was added
        resolver.setContentType("text/html; charset=UTF-8"); // <- this was added
        registry.viewResolver(resolver);
    }

另外在configure(HttpSecurity http) 方法中，我更改了过滤器添加到此的方式：

    @Override
    protected void configure(HttpSecurity http) throws Exception {

        CharacterEncodingFilter filter = new CharacterEncodingFilter();
        filter.setEncoding("UTF-8");
        filter.setForceEncoding(true);

        http.authorizeRequests().anyRequest().anonymous()
        .antMatchers("/login**", "/*.js", "/*.css", "/*.svg" ).permitAll()
        // ... some other config
        .invalidateHttpSession(true)
        .permitAll()
        .and()
        .addFilterBefore(filter, CsrfFilter.class); // <- this was added
    }

Answer 2

所以这看起来很有效，但是您是否导航到目录结构，右键单击包含您的页面的文件夹，然后选择刷新？

我不知道您使用的是什么 IDE，但过去我不得不手动进入 Eclipse 并刷新包含静态内容的包。

如果您不这样做，它就不会接受更改。