1. 重定义 WebMvcConfigurationSupport 导致格式转换失效
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| @Configuration(proxyBeanMethods = false)
public class WebMvcConfig extends WebMvcConfigurationSupport {
@Override
public void addInterceptors(InterceptorRegistry registry) {
}
@Override
protected void addResourceHandlers(ResourceHandlerRegistry registry) {
}
}
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如上代码, 由于继承了 WebMvcConfigurationSupport, 导致 WebMvcAutoConfiguration 不加载, 从而导致一些自定义的格式化等配置失效.
1.1. 原因
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| @Configuration(proxyBeanMethods = false)
@ConditionalOnWebApplication(type = Type.SERVLET)
@ConditionalOnClass({ Servlet.class, DispatcherServlet.class, WebMvcConfigurer.class })
@ConditionalOnMissingBean(WebMvcConfigurationSupport.class) // 存在对应类型的 Bean 则不加载
@AutoConfigureOrder(Ordered.HIGHEST_PRECEDENCE + 10)
@AutoConfigureAfter({ DispatcherServletAutoConfiguration.class, TaskExecutionAutoConfiguration.class,
ValidationAutoConfiguration.class })
public class WebMvcAutoConfiguration {
}
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1.2. 解决方案
通过 WebMvcConfigurer 替代 WebMvcConfigurationSupport
建议使用次方案.
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| @Configuration
public class WebConfig implements WebMvcConfigurer {
@Override
public void addInterceptors(InterceptorRegistry registry) {
}
}
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添加处理器则可以参考:
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| @Configuration
@Import({ SpringfoxWebMvcConfiguration.class, SwaggerCommonConfiguration.class })
@ComponentScan(basePackages = {
"springfox.documentation.swagger2.mappers"
})
@ConditionalOnWebApplication
public class Swagger2DocumentationConfiguration {
@Bean
public JacksonModuleRegistrar swagger2Module() {
return new Swagger2JacksonModule();
}
@Bean
public HandlerMapping swagger2ControllerMapping(
Environment environment,
DocumentationCache documentationCache,
ServiceModelToSwagger2Mapper mapper,
JsonSerializer jsonSerializer) {
return new PropertySourcedRequestMappingHandlerMapping(
environment,
new Swagger2Controller(environment, documentationCache, mapper, jsonSerializer));
}
}
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1.2.2. 继续添加定义格式化等配置
该方案比较繁琐
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| @Configuration
public class DateConfig {
@Bean
public Converter<String, LocalDate> localDateConverter() {
return new Converter<String, LocalDate>() {
@Override
public LocalDate convert(String source) {
return LocalDate.parse(source, DateTimeFormatter.ofPattern(Constants.DATE_PATTERN));
}
};
}
@Bean
public Converter<String, LocalDateTime> localDateTimeConverter() {
return new Converter<String, LocalDateTime>() {
@Override
public LocalDateTime convert(String source) {
return LocalDateTime.parse(source, DateTimeFormatter.ofPattern(Constants.DATETIME_PATTERN));
}
};
}
}
@Configuration
public class JacksonConfig {
@Bean
@Primary
public ObjectMapper jacksonObjectMapper() {
ObjectMapper objectMapper = new ObjectMapper();
JavaTimeModule javaTimeModule = new JavaTimeModule();
javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(Constants.DATETIME_PATTERN)));
javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(Constants.DATETIME_PATTERN)));
javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(Constants.DATE_PATTERN)));
javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(Constants.DATE_PATTERN)));
objectMapper.registerModule(javaTimeModule);
return objectMapper;
}
}
@Configuration(proxyBeanMethods = false)
public class WebMvcConfig extends WebMvcConfigurationSupport {
@Autowired
private MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter;
@Autowired
private Converter<String, LocalDate> localDateConverter;
@Autowired
private Converter<String, LocalDateTime> localDateTimeConverter;
@Override
protected void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("swagger-ui.html")
.addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**")
.addResourceLocations("classpath:/META-INF/resources/webjars/");
}
@Override
protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
super.extendMessageConverters(converters);
for (int i = 0; i < converters.size(); i++) {
if (converters.get(i) instanceof MappingJackson2HttpMessageConverter) {
converters.set(i, mappingJackson2HttpMessageConverter);
return;
}
}
converters.add(mappingJackson2HttpMessageConverter);
}
@Override
protected void addFormatters(FormatterRegistry registry) {
super.addFormatters(registry);
registry.addConverter(localDateConverter);
registry.addConverter(localDateTimeConverter);
}
}
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