spring boot thymeleaf无法从POST正确编码UTF-8字符

我正在用百里香模板引擎评估弹簧靴.我正面临UTF8字符表单发布问题.

对于最简单的form.html帖子示例：

<head>
  <title>test</title>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
</head>

<body>

<form th:action="@{/test/doPost}" method="post">
  <input type="text" name="name" />
  <button type="submit">submit</button>
</form>

并在控制器中：

@Controller
@RequestMapping("/test")
public class TestController {

  private Logger logger = LoggerFactory.getLogger(getClass());

  @RequestMapping(value = "/form", method = RequestMethod.GET)
  public String showForm() {
    return "test/form";
  }

  @RequestMapping(value = "/doPost", method = RequestMethod.POST)
  public String doPost(@RequestBody String body,
                       @RequestParam(value = "name", required = true) String name) {
    logger.info("body = {}", body);
    logger.info("name = {}", name);
    return "redirect:/test/form";
  }
}

在此示例中,Spring MVC(或百里香叶)无法正确编码具有UTF-8字符的形式.

如果输入ä,我将看到以下日志：

TestController - body = name=%C3%83%C2%A4
TestController - name = Ã¤

ä应该被编码为.正文应该是name =ä,但是我不知道为什么它变成Ã并被解码为错误的字符.

我用Google搜索并找到了一些解决方案,例如添加编码过滤器：

  @Bean
  public Filter characterEncodingFilter() {
    CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
    characterEncodingFilter.setEncoding("UTF-8");
    characterEncodingFilter.setForceEncoding(true);
    return characterEncodingFilter;
  }

但是没有用.

另一个解决方案是thymeleafViewResolver.setCharacterEncoding(“ UTF-8”);通过这种方式：

  @Bean
  public SpringResourceTemplateResolver templateResolver() {
    final SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
    templateResolver.setCacheable(false);
    templateResolver.setPrefix("classpath:/templates/");
    templateResolver.setSuffix(".html");
    templateResolver.setTemplateMode("HTML5");
    return templateResolver;
  }

  @Bean
  public SpringTemplateEngine springTemplateEngine() {
    SpringTemplateEngine springTemplateEngine = new SpringTemplateEngine();
    springTemplateEngine.setTemplateResolver(templateResolver());

    return springTemplateEngine;
  }

  @Bean
  public ThymeleafViewResolver viewResolver() {
    ThymeleafViewResolver thymeleafViewResolver = new ThymeleafViewResolver();
    thymeleafViewResolver.setTemplateEngine(springTemplateEngine());
    thymeleafViewResolver.setCharacterEncoding("UTF-8");
    return thymeleafViewResolver;
  }

但这也不起作用.

而且,ThymeleafViewResolver的characterEncoding已在ThymeleafAutoConfiguration source code中设置.似乎没有必要在此处重新定义UTF-8.

我似乎对这个问题有类似的情况：UTF-8 encoding with form post and Spring Controller.公认的解决方案是

Moving CharacterEncodingFilter to the top and forcing the encoding to
be set as UTF-8 solved the problem.

我尝试了这个：

  @Bean
  public FilterRegistrationBean filterRegistrationBean() {
    FilterRegistrationBean registrationBean = new FilterRegistrationBean();
    CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
    characterEncodingFilter.setEncoding("UTF-8");
    characterEncodingFilter.setForceEncoding(true);
    registrationBean.setFilter(characterEncodingFilter);
    registrationBean.setOrder(0);
    return registrationBean;
  }

但仍然无法正常工作.

我认为UTF-8表单发布非常基本,但是为什么它不能在这里工作.我错过了什么吗？

环境：

<springboot.version>1.3.0.M5</springboot.version>
<spring.version>4.2.1.RELEASE</spring.version>

非常感谢.

有点偏离主题：我使用了许多其他框架,例如JSP / wicket / grails / play1 / play2,但这些框架都不具有如此烦人的UTF-8情况.

最佳答案

This is a known issue, already fixed-该修补程序将随Spring Boot 1.3.0.RC1一起提供.

同时,您可以通过手动声明编码过滤器来解决此问题：

@Autowired
private HttpEncodingProperties httpEncodingProperties;

@Bean
public OrderedCharacterEncodingFilter characterEncodingFilter() {
    OrderedCharacterEncodingFilter filter = new OrderedCharacterEncodingFilter();
    filter.setEncoding(this.httpEncodingProperties.getCharset().name());
    filter.setForceEncoding(this.httpEncodingProperties.isForce());
    filter.setOrder(Ordered.HIGHEST_PRECEDENCE);
    return filter;
}

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