java - Jackson 在反序列化的错误级别上搜索方法
问题描述
我正在尝试将 JSON 读入课堂。Jackson 想要将子元素的字段应用于元素本身,当然它不存在。
这是 JSON:
{
"authorizationRequest":{
"scope":["write","read"],
"resourceIds":["metadata"],
"approved":true,
"authorities":[],
"authorizationParameters":{
"scope":"write read",
"response_type":"token",
"redirect_uri":"",
"state":"",
"stateful":"false",
"client_id":"5102686_metadata"
},
"approvalParameters":{},
"state":"",
"clientId":"5102686_metadata",
"redirectUri":"",
"responseTypes":["token"],
"denied":false
},
"credentials":"",
"clientOnly":false,
"name":"testuser"
}
这些类如下所示:
// The main class that I try do deserialize:
public class DeserializedOAuth2Authentication extends OAuth2Authentication{
private String name;
private boolean clientOnly;
private AuthorizationRequest authorizationRequest = new DefaultAuthorizationRequest("", new ArrayList<>());
public DeserializedOAuth2Authentication() {
super(new DefaultAuthorizationRequest("", new ArrayList<>()), null);
}
@Override
@JsonProperty
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
@JsonProperty
public boolean isClientOnly() {
return clientOnly;
}
public void setClientOnly(boolean clientOnly) {
this.clientOnly = clientOnly;
}
@Override
@JsonProperty
public AuthorizationRequest getAuthorizationRequest() {
return authorizationRequest;
}
public void setAuthorizationRequest(AuthorizationRequest authorizationRequest) {
this.authorizationRequest = authorizationRequest;
}
}
AuthorizationRequest 是一个包含列出元素的所有 getter 的接口;它被配置为由 DefaultAuthorizationRequest 类进行序列化,该类还包含相应的设置器和具有相应名称的实现文件。
public class DefaultAuthorizationRequest implements AuthorizationRequest, Serializable {
private Set<String> scope = new LinkedHashSet<String>();
private Set<String> resourceIds = new HashSet<String>();
private boolean approved = false;
private Collection<GrantedAuthority> authorities = new HashSet<GrantedAuthority>();
private Map<String, String> authorizationParameters = new ConcurrentHashMap<String, String>();
private Map<String, String> approvalParameters = new HashMap<String, String>();
private String resolvedRedirectUri;
public Map<String, String> getAuthorizationParameters() {
return Collections.unmodifiableMap(authorizationParameters);
}
public Map<String, String> getApprovalParameters() {
return Collections.unmodifiableMap(approvalParameters);
}
public String getClientId() {
return authorizationParameters.get(CLIENT_ID);
}
public Set<String> getScope() {
return Collections.unmodifiableSet(this.scope);
}
public Set<String> getResourceIds() {
return Collections.unmodifiableSet(resourceIds);
}
public Collection<GrantedAuthority> getAuthorities() {
return Collections.unmodifiableSet((Set<? extends GrantedAuthority>) authorities);
}
public boolean isApproved() {
return approved;
}
public boolean isDenied() {
return !approved;
}
public String getState() {
return authorizationParameters.get(STATE);
}
public String getRedirectUri() {
return resolvedRedirectUri == null ? authorizationParameters.get(REDIRECT_URI) : resolvedRedirectUri;
}
public Set<String> getResponseTypes() {
return OAuth2Utils.parseParameterList(authorizationParameters.get(RESPONSE_TYPE));
}
public void setRedirectUri(String redirectUri) {
this.resolvedRedirectUri = redirectUri;
}
public void setScope(Set<String> scope) {
this.scope = scope == null ? new LinkedHashSet<String>() : new LinkedHashSet<String>(scope);
authorizationParameters.put(SCOPE, OAuth2Utils.formatParameterList(scope));
}
public void setResourceIds(Set<String> resourceIds) {
this.resourceIds = resourceIds == null ? new HashSet<String>() : new HashSet<String>(resourceIds);
}
public void setApproved(boolean approved) {
this.approved = approved;
}
public void setAuthorities(Collection<? extends GrantedAuthority> authorities) {
this.authorities = authorities == null ? new HashSet<GrantedAuthority>() : new HashSet<GrantedAuthority>(
authorities);
}
public void setAuthorizationParameters(Map<String, String> authorizationParameters) {
String clientId = getClientId();
Set<String> scope = getScope();
this.authorizationParameters = authorizationParameters == null ? new HashMap<String, String>()
: new HashMap<String, String>(authorizationParameters);
}
public void setApprovalParameters(Map<String, String> approvalParameters) {
this.approvalParameters = approvalParameters == null ? new HashMap<String, String>()
: new HashMap<String, String>(approvalParameters);
}
....
}
在上面的 JSON 字符串上调用 read 我得到一个异常
com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "scope" (class de.mvbonline.vlx.auth.oauth2.DeserializedOAuth2Authentication), not marked as ignorable (3 known properties: "name", "authorizationRequest", "clientOnly"])
at [Source: (String)"{ "credentials":"", "clientOnly":false, "authorizationRequest":{ "scope":["write","read"], "resourceIds":["metadata"], "approved":true, "authorities":[], "authorizationParameters":{ "scope":"write read", "response_type":"token", "redirect_uri":"", "state":"", "stateful":"false", "[truncated 316 chars]; line: 1, column: 111] (through reference chain: de.mvbonline.vlx.auth.oauth2.DeserializedOAuth2Authentication["scope"])
当然,“范围”字段不在 DeserializedOAuth2Authentication 的上下文中,而是在 DefaultAuthorizationRequest 的上下文中。为什么杰克逊在错误的课程中寻找它?我正在取消杰克逊版本 2.12.4
解决方案
确保DefaultAuthorizationRequest
可以由 Jackson 序列化和反序列化。我想他们不是有几个原因。我能想到的两个:
- 你必须让杰克逊知道如何反序列化
DefaultAuthorizationRequest
类。一种可能的解决方案是在类中添加一个@JsonCreator
and@JsonProperty
。这同样适用于GrantedAuthority
课堂。 DefaultAuthorizationRequest
有 type 的字段Map
,需要特别注意。请参阅这些链接,了解如何将 JSON 字符串转换为 Map<String, String>,或者,如果Map
有自定义对象,如何反序列化为自定义对象的 HashMap
推荐阅读
- amazon-web-services - 拒绝访问(服务:;状态代码:403;错误代码:拒绝访问
- php - 缺少 oci.dll 并且无法加载 php_oci8.dll
- c# - 当计时器倒计时到达 00:00:00 时,form1 在哪里以及如何重新开始下载?
- pine-script - PineScript - 多个进入/退出参数
- r - 根据两个列表之间的不同名称删除组件
- javascript - 将对象数组转换为另一个对象数组
- python - 控制台中的 driver.execute_script("arguments[0].click", button) 和 JS button.click() 有什么区别?
- git - 合并手动复制到新仓库但不共享共同祖先提交的 git 仓库
- arrays - 如何将信息从数组更新到 Firebase?
- sql - UPSERT 基于具有 NULL 值的 UNIQUE 约束