Long转json精度丢失的配置未生效

zhangdaiscott
1 parent 1b75a5c0
Showing 1 changed file with 16 additions and 12 deletions
jeecg-boot/jeecg-boot-base/jeecg-boot-base-core/src/main/java/org/jeecg/config/WebMvcConfiguration.java
 package org.jeecg.config;
+import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.module.SimpleModule;
 import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.actuate.trace.http.InMemoryHttpTraceRepository;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Conditional;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.http.converter.HttpMessageConverter;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.context.annotation.Primary;
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
 import org.springframework.web.cors.CorsConfiguration;
 import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
 import org.springframework.web.filter.CorsFilter;
@@ -17,8 +19,6 @@ import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
-import java.util.List;
-
 /**
  * Spring Boot 2.0 解决跨域问题
  *
@@ -71,20 +71,24 @@ public class WebMvcConfiguration implements WebMvcConfigurer {
         return new CorsFilter(urlBasedCorsConfigurationSource);
     }
+
     /**
-    * 添加Long转json精度丢失的配置
-    * @Return: void
-    */
-    @Override
-    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
-        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
+     * 序列换成json时,将所有的long变成string
+     * js中long过长精度丢失
+     */
+    @Bean
+    @Primary
+    @ConditionalOnMissingBean(ObjectMapper.class)
+    public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
         ObjectMapper objectMapper = new ObjectMapper();
         SimpleModule simpleModule = new SimpleModule();
+        //忽略在json字符串中存在，在java类中不存在字段，防止错误。
+        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        objectMapper.configure(DeserializationFeature.READ_ENUMS_USING_TO_STRING, true);
         simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
         simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
         objectMapper.registerModule(simpleModule);
-        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
-        converters.add(jackson2HttpMessageConverter);
+        return objectMapper;
     }
     /**