最近在項(xiàng)目中用類繼承WebMvcConfigurationSupport實(shí)現(xiàn)攔截器

@Configuration
@RequiredArgsConstructor
public class SpringWebSupport extends WebMvcConfigurationSupport {
    private final ProjectInterceptor projectInterceptor;


    //    攔截器
//設(shè)置攔截器對(duì)象和攔截請(qǐng)求
    @Override
    protected void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(projectInterceptor).addPathPatterns("
/**").excludePathPatterns("......"); //配置攔截路徑
    }
}

同時(shí)呢，在我曾經(jīng)寫過的一個(gè)依賴包里(其他包)，配置了一個(gè)消息轉(zhuǎn)換器并且在項(xiàng)目中引入

public class JacksonObjectMapper extends ObjectMapper{


    public static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";
    public static final String DEFAULT_DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
    public static final String DEFAULT_TIME_FORMAT = "HH:mm:ss";

    public JacksonObjectMapper () {
        super();
        //收到未知屬性時(shí)不報(bào)異常
        this.configure(FAIL_ON_UNKNOWN_PROPERTIES, false);

        //反序列化時(shí)，屬性不存在的兼容處理
        this.getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);


        SimpleModule simpleModule = new SimpleModule()
                .addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
                .addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
                .addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)))

                .addSerializer(BigInteger.class, ToStringSerializer.instance)
                .addSerializer(Long.class, ToStringSerializer.instance)  // 對(duì)于long類型轉(zhuǎn)為String
                .addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_FORMAT)))
                .addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_FORMAT)))
                .addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_FORMAT)));

        //注冊(cè)功能模塊 例如，可以添加自定義序列化器和反序列化器
        this.registerModule(simpleModule);
    }
}

@Slf4j
@Configuration
public class MyWebConfig extends WebMvcConfigurationSupport {
    /**
     * 擴(kuò)展 mvc 框架的消息轉(zhuǎn)換器
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        // 創(chuàng)建消息轉(zhuǎn)換器對(duì)象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        // 設(shè)置該消息轉(zhuǎn)換器使用 JacksonObjectMapper 進(jìn)行轉(zhuǎn)換
        messageConverter.setObjectMapper(new  JacksonObjectMapper());
        // 將消息轉(zhuǎn)換器對(duì)象追加到 mvc 框架的轉(zhuǎn)換器集合中(加到最前面)
        converters.add(0, messageConverter);
    }
}

在啟動(dòng)類掃描了這另一個(gè)包里的WebMvcConfigurationSupport配置依賴。

希望的是：攔截器+消息轉(zhuǎn)變換器全都生效，但是生效的只有攔截器，Long類型還是沒有轉(zhuǎn)換成String返回給前端。

DEBUG斷點(diǎn)調(diào)試

發(fā)現(xiàn)啟動(dòng)的時(shí)候根本不會(huì)走這里，說明沒生效

解決辦法：把添加消息轉(zhuǎn)換器代碼遷移到和攔截器項(xiàng)目下同一個(gè)WebMvcConfigurationSupport里

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