From 537cc05601edbf90f3d9b7b8373fc5b3d69bd906 Mon Sep 17 00:00:00 2001
From: zhangdaiscott <zhangdaiscott@163.com>
Date: Tue, 14 Sep 2021 16:32:31 +0800
Subject: [PATCH] =?UTF-8?q?Long=E8=BD=ACjson=E7=B2=BE=E5=BA=A6=E4=B8=A2?=
 =?UTF-8?q?=E5=A4=B1=E7=9A=84=E9=85=8D=E7=BD=AE=20=E6=9C=AA=E7=94=9F?=
 =?UTF-8?q?=E6=95=88issues/I49DNI?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../org/jeecg/config/WebMvcConfiguration.java | 24 +++++++++----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/jeecg-boot/jeecg-boot-base/jeecg-boot-base-core/src/main/java/org/jeecg/config/WebMvcConfiguration.java b/jeecg-boot/jeecg-boot-base/jeecg-boot-base-core/src/main/java/org/jeecg/config/WebMvcConfiguration.java
index 9b2689d5..f7fe9bce 100644
--- a/jeecg-boot/jeecg-boot-base/jeecg-boot-base-core/src/main/java/org/jeecg/config/WebMvcConfiguration.java
+++ b/jeecg-boot/jeecg-boot-base/jeecg-boot-base-core/src/main/java/org/jeecg/config/WebMvcConfiguration.java
@@ -5,11 +5,12 @@ 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 +18,6 @@ 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 +70,21 @@ 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();
         simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
         simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
         objectMapper.registerModule(simpleModule);
-        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
-        converters.add(jackson2HttpMessageConverter);
+        return objectMapper;
     }
 
     /**