'pageadd'

servers/boe-server-basic/src/main/java/com/xboe/ResultNullToEmptyConfig.java

@@ -0,0 +1,38 @@
+package com.xboe;
+
+import java.io.IOException;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+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;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+/**
+ * 返回的数据中如果是null 就会转化成空字符串
+ *
+ */
+@Configuration
+public class ResultNullToEmptyConfig {
+
+	@Bean
+    @Primary
+    @ConditionalOnMissingBean(ObjectMapper.class)
+    public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
+        ObjectMapper objectMapper = builder.createXmlMapper(false).build();
+        objectMapper.getSerializerProvider().setNullValueSerializer(new JsonSerializer<Object>() {
+            @Override
+            public void serialize(Object o, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) 
+                    throws IOException, JsonProcessingException {
+                jsonGenerator.writeString("");
+            }
+        });
+        return objectMapper;
+    }
+}