根据 https://www.isharkfly.com/t/jackson-snake-case/15034 内容，对类进行重新规划。

client/src/main/java/com/ossez/discourse/client/service/PostsService.java

@@ -53,7 +53,7 @@ public class PostsService extends DiscourseClient {
 
             if (response.code() == HttpStatus.SC_OK) {
                 objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-                objectMapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE);
+//                objectMapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE);
                 post = Optional.of(objectMapper.readValue(responseStr, Post.class));
             }
         } catch (IOException e) {

client/src/test/java/com/ossez/discourse/client/test/PostsServiceTest.java

@@ -31,7 +31,7 @@ public class PostsServiceTest extends TestBase {
      * @throws DiscourseErrorException
      */
     @Test
-    public void testCreatePost() throws DiscourseErrorException {
+    public void testGetPost() throws DiscourseErrorException {
         log.debug("Create WeChat Offical Account Menun Test");
         log.debug("{}", postsService.getPost(Long.valueOf("1245")).get().getRaw());
 

common/src/main/java/com/ossez/discourse/common/model/dto/Creation.java

@@ -1,10 +1,13 @@
 package com.ossez.discourse.common.model.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
 
 import java.io.Serializable;
 import java.util.List;
 
+@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
 public class Creation implements Serializable {
 
     private static final long serialVersionUID = 3741976827910675760L;

common/src/main/java/com/ossez/discourse/common/model/dto/Post.java

@@ -1,7 +1,10 @@
 package com.ossez.discourse.common.model.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
 
+@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
 public class Post {
 
     @JsonProperty(value = "id", required = true)

common/src/main/java/com/ossez/discourse/common/model/dto/PostCreation.java

@@ -1,9 +1,12 @@
 package com.ossez.discourse.common.model.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
 
 import java.io.Serializable;
 
+@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
 public class PostCreation extends Creation implements Serializable {
 
     private static final long serialVersionUID = 5896160842728180229L;

common/src/main/java/com/ossez/discourse/common/model/dto/PostStream.java

@@ -1,10 +1,13 @@
 package com.ossez.discourse.common.model.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
 
 import java.io.Serializable;
 import java.util.List;
 
+@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
 public class PostStream implements Serializable {
     private static final long serialVersionUID = 7382606905010995326L;
     private List<Post> posts;

common/src/main/java/com/ossez/discourse/common/model/dto/PostUpdate.java

@@ -1,6 +1,8 @@
 package com.ossez.discourse.common.model.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
 
 import java.io.Serializable;
 
@@ -9,6 +11,7 @@ import java.io.Serializable;
  *
  * @author YuCheng Hu
  */
+@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
 public class PostUpdate implements Serializable {
 
     private static final long serialVersionUID = -227183546475863573L;

common/src/main/java/com/ossez/discourse/common/model/dto/Topic.java

@@ -1,9 +1,12 @@
 package com.ossez.discourse.common.model.dto;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
 
 import java.util.List;
 
+@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy.class)
 public class Topic {
 
     private PostStream postStream;