[xingyu.guo] feat: 指定jackson对LocalDateTime的序列化规则

src/main/java/com/guo/learningprogresstracker/config/JacksonConfig.java

@@ -0,0 +1,24 @@
+package com.guo.learningprogresstracker.config;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.guo.learningprogresstracker.config.serializer.LocalDateTimeSerializer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.time.LocalDateTime;
+
+/**
+ * @author guo
+ */
+@Configuration
+public class JacksonConfig {
+    @Bean
+    public ObjectMapper objectMapper() {
+        ObjectMapper mapper = new ObjectMapper();
+        SimpleModule module = new SimpleModule();
+        module.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer());
+        mapper.registerModule(module);
+        return mapper;
+    }
+}

src/main/java/com/guo/learningprogresstracker/config/serializer/LocalDateTimeSerializer.java

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+package com.guo.learningprogresstracker.config.serializer;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+import java.io.IOException;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class LocalDateTimeSerializer extends StdSerializer<LocalDateTime> {
+
+    // 定义你希望使用的日期时间格式
+    private static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");;
+
+    public LocalDateTimeSerializer() {
+        super(LocalDateTime.class);
+    }
+
+    @Override
+    public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider provider) throws IOException {
+        if (value == null) {
+            gen.writeNull();
+        } else {
+            // 格式化LocalDateTime为字符串
+            String formattedDate = value.format(formatter);
+            // 将格式化后的字符串写入JSON流作为一个值
+            gen.writeString(formattedDate);
+        }
+    }
+}