Java SpringBootWeb无法将嵌套的json解析为对象
首先,我对spring(WebMVC)很陌生。我正在为我的前端构建一个RESTful服务。我正在发送一个JSON数据,但当spring接收到该数据时,该数据中的一个对象未被解析 这是我的数据 JSON数据Java SpringBootWeb无法将嵌套的json解析为对象,java,spring,spring-mvc,spring-boot,jackson,Java,Spring,Spring Mvc,Spring Boot,Jackson,首先,我对spring(WebMVC)很陌生。我正在为我的前端构建一个RESTful服务。我正在发送一个JSON数据,但当spring接收到该数据时,该数据中的一个对象未被解析 这是我的数据 JSON数据 { "comments" : [] "description": "Testing", "images": "[\"path1\", \"path2\", \"path3\"]", "profile": { "id": 21234,
{
"comments" : []
"description": "Testing",
"images": "[\"path1\", \"path2\", \"path3\"]",
"profile": {
"id": 21234,
"fullname": "John Michael Doe",
"nickname": "Doe",
"email": "jdoe@email.com",
"profilePic": "/some/host/pic"
}
}
RequestMapper
@RestController
@RequestMapping("/wish")
public class WishlistController extends WishlistConverter{
/* Some @Autowired here for services... */
@RequestMapping(method = RequestMethod.POST)
public ResponseEntity<?> create(@RequestBody RestWishlist input){
try {
logger.info("create({})",input);
Wishlist wish = convert(input);
wishlistService.create(wish);
return new ResponseEntity<>(HttpStatus.OK);
} catch (Exception e) {
logger.error("Error: {}",e.getMessage());
return new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST);
}
}
}
@Override
public String toString() {
return "RestWishlist [wishId=" + wishId + ", comments=" + comments + ", description=" + description
+ ", images=" + images + ", createdAt=" + createdAt + ", updatedAt=" + updatedAt + ", profile="
+ profile + "]";
}
RestComment
public class RestWishlist {
private Long wishId;
private List<RestComment> comments;
private String description;
private String images;
private Long createdAt;
private Long updatedAt;
private RestProfile profile;
/* Getters and Setters here */
}
public class RestComment {
private Long commentId;
private String description;
private RestProfile profile;
private Long createdAt;
private Long updatedAt;
/* Getters and Setters Here */
}
现在,我在获取JSON数据的“概要文件”部分时遇到了一个问题,日志文件显示如下
2017-12-03 20:50:31.740 INFO 10212 --- [nio-8080-exec-1] c.s.s.web.controller.WishlistController : create(RestWishlist [wishId=null, comments=[], description=Testing, images=["path1", "path2", "path3"], createAt=null, updatedAt=null])
2017-12-03 20:50:31.740 INFO 10212 --- [nio-8080-exec-1] c.s.s.services.impl.WishlistServiceImpl : create(Wishlist [wishId=null, comments=[], description=Testing, images=["path1", "path2", "path3"], createAt=null, updatedAt=null])
经过几天的追踪,我发现了这个问题。这是一个简单的错误,对我来说,真的很粗心 根据json数据正确设置了“profile”。它没有出现在日志中的原因是
RestWishlist
类中的toString()
方法不包含该概要文件。见下文
之前
public class RestProfile {
private Long id;
private String fullname;
private String nickname;
private String email;
private String profilePic;
/* Getters and Setters Here */
}
@Override
public String toString() {
return "RestWishlist [wishId=" + wishId + ", comments=" + comments + ", description=" + description
+ ", images=" + images + ", createdAt=" + createdAt + ", updatedAt=" + updatedAt + "]";
}
之后
@RestController
@RequestMapping("/wish")
public class WishlistController extends WishlistConverter{
/* Some @Autowired here for services... */
@RequestMapping(method = RequestMethod.POST)
public ResponseEntity<?> create(@RequestBody RestWishlist input){
try {
logger.info("create({})",input);
Wishlist wish = convert(input);
wishlistService.create(wish);
return new ResponseEntity<>(HttpStatus.OK);
} catch (Exception e) {
logger.error("Error: {}",e.getMessage());
return new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST);
}
}
}
@Override
public String toString() {
return "RestWishlist [wishId=" + wishId + ", comments=" + comments + ", description=" + description
+ ", images=" + images + ", createdAt=" + createdAt + ", updatedAt=" + updatedAt + ", profile="
+ profile + "]";
}
我只添加了要在
toString()
method中显示的配置文件变量,而没有从服务配置文件对象发送数据,是吗?如果配置文件属性的值为null,则可能会从结果JSON中跳过它。@swapnil-根据我发送给spring的JSON数据,“profile”有值,请查看我的JSON数据。尝试使用“@modeldattribute”而不是“@RequestBody”。尝试使用@modeldattribute,但在spring接收到JSON数据后,JSON数据中的所有字段都变为空。若要解析嵌套的JSON,是否不需要创建反序列化器方法来转换为Java POJO?