refactor: 目录结构优化

src/main/java/com/youlai/boot/config/WebMvcConfig.java

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+package com.youlai.boot.config;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import jakarta.validation.Validation;
+import jakarta.validation.Validator;
+import jakarta.validation.ValidatorFactory;
+import lombok.extern.slf4j.Slf4j;
+import org.hibernate.validator.HibernateValidator;
+import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.http.converter.StringHttpMessageConverter;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.validation.beanvalidation.SpringConstraintValidatorFactory;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.math.BigInteger;
+import java.text.SimpleDateFormat;
+import java.util.List;
+import java.util.TimeZone;
+
+/**
+ * WebMvc 自动装配配置
+ *
+ * @author Ray
+ * @since 2020/10/16
+ */
+@Configuration
+@Slf4j
+public class WebMvcConfig implements WebMvcConfigurer {
+
+    @Override
+    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
+        converters.add(new StringHttpMessageConverter());
+
+        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
+        ObjectMapper objectMapper = jackson2HttpMessageConverter.getObjectMapper();
+        objectMapper.registerModule(new JavaTimeModule());
+
+        objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
+        objectMapper.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true);
+
+        // 后台Long值传递给前端精度丢失问题（JS最大精度整数是Math.pow(2,53)）
+        SimpleModule simpleModule = new SimpleModule();
+        simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
+        simpleModule.addSerializer(BigInteger.class, ToStringSerializer.instance);
+        objectMapper.registerModule(simpleModule);
+
+        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
+        converters.add(jackson2HttpMessageConverter);
+    }
+
+    @Bean
+    public Validator validator(final AutowireCapableBeanFactory autowireCapableBeanFactory) {
+        ValidatorFactory validatorFactory = Validation.byProvider(HibernateValidator.class)
+                .configure()
+                .failFast(true) // failFast=true 不校验所有参数，只要出现校验失败情况直接返回，不再进行后续参数校验
+                .constraintValidatorFactory(new SpringConstraintValidatorFactory(autowireCapableBeanFactory))
+                .buildValidatorFactory();
+
+        return validatorFactory.getValidator();
+    }
+}