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@@ -0,0 +1,36 @@
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+package com.ruoyi.framework.config;
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+
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+import com.fasterxml.jackson.databind.ObjectMapper;
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+import com.fasterxml.jackson.databind.module.SimpleModule;
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+import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
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+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
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+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
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+import org.springframework.context.annotation.Bean;
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+import org.springframework.context.annotation.Configuration;
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+import org.springframework.context.annotation.Primary;
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+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
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+
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+/**
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+ * 当Mybatis plus设置为雪花ID时
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+ * 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
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+ *
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+ * @author Ming LI
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+ */
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+@Configuration
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+public class JacksonConfig {
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+
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+ @Bean
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+ @Primary
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+ @ConditionalOnMissingBean(ObjectMapper.class)
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+ @ConditionalOnProperty(value = "mybatis-plus.global-config.dbConfig.idType", havingValue = "ASSIGN_ID")
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+ public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
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+ ObjectMapper objectMapper = builder.createXmlMapper(false).build();
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+ // 全局配置序列化返回 JSON 处理
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+ SimpleModule simpleModule = new SimpleModule();
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+ //JSON Long ==> String
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+ simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
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+ objectMapper.registerModule(simpleModule);
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+ return objectMapper;
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+ }
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+
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+}
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mingli