blocks|key|1615271|text|使用ContextResolver全局配置ObjectMapper。有一个DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES，我们可以设置为false，告诉杰克逊不要担心未知的属性。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1615272|@Provider
public+class+ObjectMapperResolver+implements+ContextResolver<ObjectMapper>+{
++++private+ObjectMapper+mapper;

++++public+ObjectMapperResolver()+{
++++++++mapper+=+new+ObjectMapper();
++++++++mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,+false);
++++}

++++@Override
++++public+ObjectMapper+getContext(Class<?>+cls)+{
++++++++return+mapper;
++++}
}|code-block|syntax|javascript|1615273|Jackson+JAX-RS提供程序将调用此解析器来获取用于反序列化的ObjectMapper。|1615274|如果你使用扫描来注册你的资源和提供者，那么这个类应该自动注册，因为有了@Provider注解。如果你没有使用扫描，那么你需要确保你注册了这个解析器，否则它将不会被使用。|1615275|1615276|编辑|1615277|如果Swagger+codegen已经在创建ContextResolver，那么您可以在解析器中实例化它，并从解析器中获取ObjectMapper，而不是创建自己的映射器。这样可以确保在生成的解析器中对ObjectMapper所做的任何配置仍然有效。然后将一个@Priority(Integer.MIN_VALUE)添加到类中，这样就可以保证在生成的类上使用它，如果生成的类也被注册的话。|1615278|@Provider
@Priority(Integer.MIN_VALUE)
public+class+ObjectMapperResolver+implements+ContextResolver<ObjectMapper>+{
++++private+ObjectMapper+mapper;

++++public+ObjectMapperResolver()+{
++++++++JSON+swaggerResolver+=+new+JSON();+
++++++++mapper+=+swaggerResolver.getContext(null);
++++++++mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,+false);
++++}

++++@Override
++++public+ObjectMapper+getContext(Class<?>+cls)+{
++++++++return+mapper;
++++}
}|1615279|entityMap|0|LINK|mutability|MUTABLE|url|https://fasterxml.github.io/jackson-databind/javadoc/2.7/com/fasterxml/jackson/databind/DeserializationFeature.html#FAIL_ON_UNKNOWN_PROPERTIES^0|2|F|L|C|11|1D|11|1D|0|0|0|Z|C|0|Z|9|0|0|0|M|F|1P|C|2T|C|3M|S|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|F|3|G|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1E|8|@$9|1F|A|1G|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1H|8|@$9|1I|A|1J|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]|$1|P|3|Q|5|6|7|1L|8|@]|D|@]|E|$]]|$1|R|3|S|5|6|7|1M|8|@$9|1N|A|1O|B|C]|$9|1P|A|1Q|B|C]|$9|1R|A|1S|B|C]|$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|T|3|U|5|H|7|1V|8|@]|D|@]|E|$I|J]]|$1|V|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]]|W|$X|$5|Y|Z|10|E|$11|12]]]]

Use a <code>ContextResolver</code> to configure the <code>ObjectMapper</code> globally. There is a <a href="https://fasterxml.github.io/jackson-databind/javadoc/2.7/com/fasterxml/jackson/databind/DeserializationFeature.html#FAIL_ON_UNKNOWN_PROPERTIES" rel="nofollow noreferrer"><code>DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES</code></a> that we can set to false, to tell Jackson not to worry about unknown properties.

<pre><code>@Provider
public class ObjectMapperResolver implements ContextResolver&lt;ObjectMapper&gt; {
 private ObjectMapper mapper;

 public ObjectMapperResolver() {
 mapper = new ObjectMapper();
 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
 }

 @Override
 public ObjectMapper getContext(Class&lt;?&gt; cls) {
 return mapper;
 }
}
</code></pre>

The Jackson JAX-RS provider will call this resolver to get the <code>ObjectMapper</code> it uses for deserialization.

If you are using scanning to register your resources and providers, then this class should automatically be registered because of the <code>@Provider</code> annotation. If you are not using scanning, then you need to make sure that you register this resolver, or else it won't be used.

<hr>

<h3>Edit</h3>

If the Swagger codegen is already creating a <code>ContextResolver</code>, what you can do is just instantiate it in your resolver, and get the <code>ObjectMapper</code> from that resolver instead of creating your own mapper. This ensures that any configurations to the <code>ObjectMapper</code> made in the generated resolver still take effect. Then add a <code>@Priority(Integer.MIN_VALUE)</code> to the class so it is guaranteed to be used over the generated one, should the generated one also be registered.

<pre><code>@Provider
@Priority(Integer.MIN_VALUE)
public class ObjectMapperResolver implements ContextResolver&lt;ObjectMapper&gt; {
 private ObjectMapper mapper;

 public ObjectMapperResolver() {
 JSON swaggerResolver = new JSON(); 
 mapper = swaggerResolver.getContext(null);
 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
 }

 @Override
 public ObjectMapper getContext(Class&lt;?&gt; cls) {
 return mapper;
 }
}
</code></pre>

We are using Swagger generated code for a restful server and models, and the problem is that the json payload can be updated with new properties at any point which will result in an error.

Typically, one can add <code>@JsonIgnoreProperties(ignoreUnknown = true)</code> to ignore properties, but in this case the Swagger generated model is generated each build (and is read only).

How can we set Swagger model to ignore unknown properties?

Sample error:

<pre><code>Unrecognized field "abc" (class xyz.model.sample), not marked as ignorable ....
</code></pre>

<hr>

UPDATE based on Paul's response:

<pre><code>import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;

import javax.annotation.Priority;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;

@Provider
@Priority(Integer.MIN_VALUE)
public class ObjectMapperResolver implements 
ContextResolver&lt;ObjectMapper&gt;{
 private ObjectMapper mapper;

 public ObjectMapperResolver() {
 mapper = new ObjectMapper();
 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, 
 false);
 }

 @Override
 public ObjectMapper getContext(Class&lt;?&gt; cls) {
 return mapper;
 }

}
</code></pre>

Ignore Unknown Properties In Swagger Model

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我们正在为restful服务器和模型使用Swagger生成的代码，问题是json有效负载可以在任何时候使用新属性更新，这将导致错误。通常，可以添加@JsonIgnoreProperties(ignoreUnknown = true)来忽略属性，但在这种情况下，Swagger生成的模型是在每次构建时生成的(并且是只读的)...

忽略Swagger模型中的未知属性-腾讯云开发者社区-腾讯云

问忽略Swagger模型中的未知属性
EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问忽略Swagger模型中的未知属性EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问忽略Swagger模型中的未知属性
EN