(add)[整体](增加默认localdate等时间默认序列化和反序列化format)

src/main/java/com/laker/admin/config/jackson/JacksonCustomizer.java

+package com.laker.admin.config.jackson;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
+import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
+import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
+import org.springframework.stereotype.Component;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+
+@Component
+public class JacksonCustomizer implements Jackson2ObjectMapperBuilderCustomizer {
+
+    private static final String STANDARD_PATTERN = "yyyy-MM-dd HH:mm:ss";
+
+    private static final String DATE_PATTERN = "yyyy-MM-dd";
+
+    private static final String TIME_PATTERN = "HH:mm:ss";
+
+    @Override
+    public void customize(Jackson2ObjectMapperBuilder builder) {
+        // 初始化JavaTimeModule
+        JavaTimeModule javaTimeModule = new JavaTimeModule();
+
+        //处理LocalDateTime
+        DateTimeFormatter dateTimeFormatter = DateTimeFormatter
+            .ofPattern(STANDARD_PATTERN);
+        javaTimeModule.addSerializer(LocalDateTime.class, 
+                                     new LocalDateTimeSerializer(dateTimeFormatter));
+        javaTimeModule.addDeserializer(LocalDateTime.class, 
+                                       new LocalDateTimeDeserializer(dateTimeFormatter));
+
+        //处理LocalDate
+        DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern(DATE_PATTERN);
+        javaTimeModule.addSerializer(LocalDate.class, 
+                                     new LocalDateSerializer(dateFormatter));
+        javaTimeModule.addDeserializer(LocalDate.class, 
+                                       new LocalDateDeserializer(dateFormatter));
+
+        //处理LocalTime
+        DateTimeFormatter timeFormatter = DateTimeFormatter.ofPattern(TIME_PATTERN);
+        javaTimeModule.addSerializer(LocalTime.class, 
+                                     new LocalTimeSerializer(timeFormatter));
+        javaTimeModule.addDeserializer(LocalTime.class, 
+                                       new LocalTimeDeserializer(timeFormatter));
+
+        /*
+         * 1. java.util.Date yyyy-MM-dd HH:mm:ss
+         * 2. 支持JDK8 LocalDateTime、LocalDate、 LocalTime
+         * 3. Jdk8Module模块支持如Stream、Optional等类
+         * 4. 序列化时包含所有字段
+         * 5. 在序列化一个空对象时时不抛出异常
+         * 6. 忽略反序列化时在json字符串中存在, 但在java对象中不存在的属性
+         */
+        builder.simpleDateFormat(STANDARD_PATTERN)
+                .modules(javaTimeModule, new Jdk8Module())
+                .serializationInclusion(JsonInclude.Include.ALWAYS)
+                .failOnEmptyBeans(false)
+                .failOnUnknownProperties(false);
+    }
+}