update 增加MP自定义id 序列化兼容

ruoyi-framework/src/main/java/com/ruoyi/framework/config/JacksonConfig.java

@@ -0,0 +1,36 @@
+package com.ruoyi.framework.config;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
+
+/**
+ * 当Mybatis plus设置为雪花ID时
+ * 使用此类，会把所有数字返回变为字符串返回适配前端Long型失真问题
+ *
+ * @author Ming LI
+ */
+@Configuration
+public class JacksonConfig {
+
+	@Bean
+	@Primary
+	@ConditionalOnMissingBean(ObjectMapper.class)
+	@ConditionalOnProperty(value = "mybatis-plus.global-config.dbConfig.idType", havingValue = "ASSIGN_ID")
+	public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
+		ObjectMapper objectMapper = builder.createXmlMapper(false).build();
+		// 全局配置序列化返回 JSON 处理
+		SimpleModule simpleModule = new SimpleModule();
+		//JSON Long ==> String
+		simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
+		objectMapper.registerModule(simpleModule);
+		return objectMapper;
+	}
+
+}