我试图从我的db-service中反序列化我的application / json + hal消息,这是由Spring.io jpa-data-rest模块生成的,但是我无法将消息反序列化为我的业务逻辑服务上的java模型。
我尝试根据以下教程更新我的项目:https://reflectoring.io/accessing-spring-data-rest-with-feign/。
如果我通过在结尾处返回字符串来访问feign客户端的其余资源,那么它很可能会返回我的db-service的字符串响应。如果我将响应作为Resources返回,我会收到一个空的java对象。
作为测试,我还使用我的db-service中的jpa实体类作为反序列化模板类,它还返回一个空的java对象。
用于反序列化的模型:
public abstract class AbstractNationModelBase implements Serializable {
private String uuid;
public AbstractNationModelBase(String uuid) {
this.uuid = uuid;
}
public AbstractNationModelBase() {
}
public String getUuid() {
return uuid;
}
public void setUuid(String uuid) {
this.uuid = uuid;
}
[...]
}
public class UserModel extends AbstractNationModelBase implements Serializable {
private String username;
private String password;
private boolean isAdmin;
public UserModel(String uuid, String username, String password, boolean isAdmin) {
super(uuid);
this.username = username;
this.password = password;
this.isAdmin = isAdmin;
}
public UserModel(String username, String password, boolean isAdmin) {
this.username = username;
this.password = password;
this.isAdmin = isAdmin;
}
public UserModel(){
super();
}
@FeignClient(value="nation-database-service")
public interface UserFeignProxy {
@RequestMapping(method = RequestMethod.GET,value="/users")
Resources<UserModel> GetAllUsersByModel();
}
正确的回复文字:
{
"_embedded": {
"users": [
{
"uuid": "815b53b0-cd33-4813-bce3-a7c4989b0b10",
"username": "Testiman",
"password": "peter_test",
"admin": true,
"_links": {
"self": {
"href": "http://localhost:8081/users/1"
},
"user": {
"href": "http://localhost:8081/users/1"
}
}
}
]
},
"_links": {
"self": {
"href": "http://localhost:8081/users{?page,size,sort}",
"templated": true
},
"profile": {
"href": "http://localhost:8081/profile/users"
},
"search": {
"href": "http://localhost:8081/users/search"
}
},
"page": {
"size": 20,
"totalElements": 1,
"totalPages": 1,
"number": 0
}
}
结果应该是将其反序列化为我的模型类。如果有人可以分享一些经验,我将不胜感激。
检查以下github问题后,我找到了解决方案:
https://github.com/spring-cloud/spring-cloud-openfeign/issues/127
我在问题中提到了一个自定义的AbstractJackson2HttpMessageConverter