请教一个 fastjson 1 版本完全可以正常解析为对象，但是 fastjson 2 只能解析一个字段的值，其他字段都没有解析， list 也没解析

JDK 版本使用的 17 ， 使用 JDK 11 ， 也是一样的结果。

使用的 fast json：

1.x 版本使用的：

 <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.83</version> </dependency> 

2.x 版本使用的：

 <dependency> <groupId>com.alibaba.fastjson2</groupId> <artifactId>fastjson2</artifactId> <version>2.0.53</version> </dependency> 

原始的 json 字符串如下， （用 bejson 校验过，是对的）

{ "ListBucketResult":{ "xmlns":"http://s3.amazonaws.com/doc/2006-03-01/", "Name":"a_name", "Prefix":"", "Marker":"", "MaxKeys":1000, "IsTruncated":false, "Contents":[ { "Key":"E.jpg", "LastModified":"2024-11-01T13:09:17.000Z", "ETag":"\"tag-1\"", "Size":26579, "Owner":{ "ID":"xx1", "DisplayName":"c_name" }, "StorageClass":"STANDARD" }, { "Key":"地球.jpg", "LastModified":"2024-11-07T13:56:43.000Z", "ETag":"\"tag-2\"", "Size":26579, "Owner":{ "ID":"xx2", "DisplayName":"c_name" }, "StorageClass":"STANDARD" } ] } } 

准备接收的实体如下：

package com.code.domain; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import java.io.Serializable; import java.util.List; @Data @NoArgsConstructor @AllArgsConstructor public class ListBucketResult implements Serializable { /** * 包装体 */ private ListBucketResultContent ListBucketResult; @Data @NoArgsConstructor @AllArgsConstructor public static class ListBucketResultContent implements Serializable { private String xmlns; private String name; private String prefix; private String marker; private int maxKeys; private boolean isTruncated; private List<Contents> contents; } @Data @NoArgsConstructor @AllArgsConstructor public static class Contents implements Serializable { private String key; private String lastModified; private String eTag; private int size; private Owner owner; private String storageClass; @Data @NoArgsConstructor @AllArgsConstructor public static class Owner { private String id; private String displayName; } } } 

对 fastjson 1 测试类：

package com.code; import com.alibaba.fastjson.JSON; import com.code.s3xmlgateway.domain.ListBucketResult; import org.junit.jupiter.api.Test; public class Fast1Test { @Test public void testFast1() { String rawJsOnStr= "{\n" + "\t\"ListBucketResult\":{\n" + "\t\t\"xmlns\":\"http://s3.amazonaws.com/doc/2006-03-01/\",\n" + "\t\t\"Name\":\"a_name\",\n" + "\t\t\"Prefix\":\"\",\n" + "\t\t\"Marker\":\"\",\n" + "\t\t\"MaxKeys\":1000,\n" + "\t\t\"IsTruncated\":false,\n" + "\t\t\"Contents\":[\n" + "\t\t\t{\n" + "\t\t\t\t\"Key\":\"E.jpg\",\n" + "\t\t\t\t\"LastModified\":\"2024-11-01T13:09:17.000Z\",\n" + "\t\t\t\t\"ETag\":\"\\\"tag-1\\\"\",\n" + "\t\t\t\t\"Size\":26579,\n" + "\t\t\t\t\"Owner\":{\n" + "\t\t\t\t\t\"ID\":\"xx1\",\n" + "\t\t\t\t\t\"DisplayName\":\"c_name\"\n" + "\t\t\t\t},\n" + "\t\t\t\t\"StorageClass\":\"STANDARD\"\n" + "\t\t\t},\n" + "\t\t\t{\n" + "\t\t\t\t\"Key\":\"地球.jpg\",\n" + "\t\t\t\t\"LastModified\":\"2024-11-07T13:56:43.000Z\",\n" + "\t\t\t\t\"ETag\":\"\\\"tag-2\\\"\",\n" + "\t\t\t\t\"Size\":26579,\n" + "\t\t\t\t\"Owner\":{\n" + "\t\t\t\t\t\"ID\":\"xx2\",\n" + "\t\t\t\t\t\"DisplayName\":\"c_name\"\n" + "\t\t\t\t},\n" + "\t\t\t\t\"StorageClass\":\"STANDARD\"\n" + "\t\t\t}\n" + "\t\t]\n" + "\t}\n" + "}"; ListBucketResult listBucketResult = JSON.parseObject(rawJsonStr, ListBucketResult.class); System.out.println(listBucketResult); } } 

运行结果：

ListBucketResult(ListBucketResult=ListBucketResult.ListBucketResultContent(xmlns=http://s3.amazonaws.com/doc/2006-03-01/, name=a_name, prefix=, marker=, maxKeys=1000, isTruncated=false, cOntents=[ListBucketResult.Contents(key=E.jpg, lastModified=2024-11-01T13:09:17.000Z, eTag="tag-1", size=26579, owner=com.code.s3xmlgateway.domain.ListBucketResult$Contents$Owner@188715b5, storageClass=STANDARD), ListBucketResult.Contents(key=地球.jpg, lastModified=2024-11-07T13:56:43.000Z, eTag="tag-2", size=26579, owner=com.code.s3xmlgateway.domain.ListBucketResult$Contents$Owner@1ea9f6af, storageClass=STANDARD)])) 

如上可以看出，运行结果一切正常，可以正常解析为对象的值

针对 fastjson 2 的测试类：

package com.code; import com.alibaba.fastjson2.JSON; import com.code.s3xmlgateway.domain.ListBucketResult; import org.junit.jupiter.api.Test; public class Fast2Test { @Test public void testFast2() { String rawJsOnStr= "{\n" + "\t\"ListBucketResult\":{\n" + "\t\t\"xmlns\":\"http://s3.amazonaws.com/doc/2006-03-01/\",\n" + "\t\t\"Name\":\"a_name\",\n" + "\t\t\"Prefix\":\"\",\n" + "\t\t\"Marker\":\"\",\n" + "\t\t\"MaxKeys\":1000,\n" + "\t\t\IsTruncated\":false,\n" + "\t\t\"Contents\":[\n" + "\t\t\t{\n" + "\t\t\t\t\"Key\":\"E.jpg\",\n" + "\t\t\t\t\"LastModified\":\"2024-11-01T13:09:17.000Z\",\n" + "\t\t\t\t\"ETag\":\"\\\"tag-1\\\"\",\n" + "\t\t\t\t\"Size\":26579,\n" + "\t\t\t\t\"Owner\":{\n" + "\t\t\t\t\t\"ID\":\"xx1\",\n" + "\t\t\t\t\t\"DisplayName\":\"c_name\"\n" + "\t\t\t\t},\n" + "\t\t\t\t\"StorageClass\":\"STANDARD\"\n" + "\t\t\t},\n" + "\t\t\t{\n" + "\t\t\t\t\"Key\":\"地球.jpg\",\n" + "\t\t\t\t\"LastModified\":\"2024-11-07T13:56:43.000Z\",\n" + "\t\t\t\t\"ETag\":\"\\\"tag-2\\\"\",\n" + "\t\t\t\t\"Size\":26579,\n" + "\t\t\t\t\"Owner\":{\n" + "\t\t\t\t\t\"ID\":\"xx2\",\n" + "\t\t\t\t\t\"DisplayName\":\"c_name\"\n" + "\t\t\t\t},\n" + "\t\t\t\t\"StorageClass\":\"STANDARD\"\n" + "\t\t\t}\n" + "\t\t]\n" + "\t}\n" + "}"; ListBucketResult listBucketResult = JSON.parseObject(rawJsonStr, ListBucketResult.class); System.out.println(listBucketResult); } } 

运行结果：

ListBucketResult(ListBucketResult=ListBucketResult.ListBucketResultContent(xmlns=http://s3.amazonaws.com/doc/2006-03-01/, name=null, prefix=null, marker=null, maxKeys=0, isTruncated=false, cOntents=null)) 

使用 fastjson2 可以看到，只解析了 xmlns 这个字段的值； 我尝试在原始的 json 删掉这个 xmlns 字段，结果会是其他字段一样不能解析，list 也无法解析。

自己查阅了 fastjson 的文档 和 升级文档，没找到类似的说明

因此请教下社区的各位大神， 看这是什么情况？ 谢谢