jackson出现错误 Unrecognized field,JsonIgnoreProperties忽略不起作用
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错误描述
错误堆栈信息如下:
org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "test" (Class com.unicompayment.mmp.front.dto.MarketingEventDto), not marked as ignorable at [Source: java.io.ByteArrayInputStream@74d5f001; line: 1, column: 13] (through reference chain: com.unicompayment.mmp.front.dto.MarketingEventDto["test"]) at org.jboss.resteasy.core.MessageBodyParameterInjector.inject(MessageBodyParameterInjector.java:183) ~[resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.core.MethodInjectorImpl.injectArguments(MethodInjectorImpl.java:89) ~[resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:112) ~[resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:288) ~[resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:242) ~[resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:229) ~[resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) [resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) [resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) [resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) [resteasy-jaxrs-3.0.7.Final.jar:na] at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) [resteasy-jaxrs-3.0.7.Final.jar:na] at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api.jar:na] at com.alibaba.dubbo.rpc.protocol.rest.DubboHttpServer$RestHandler.handle(DubboHttpServer.java:86) [dubbo-2.8.4.jar:2.8.4] at com.alibaba.dubbo.remoting.http.servlet.DispatcherServlet.service(DispatcherServlet.java:64) [dubbo-2.8.4.jar:2.8.4] at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api.jar:na] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [catalina.jar:7.0.59] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.59] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat7-websocket.jar:7.0.59] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.59] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.59] at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) [druid-1.0.4.jar:1.0.4] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.59] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.59] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [catalina.jar:7.0.59] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [catalina.jar:7.0.59] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) [catalina.jar:7.0.59] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) [catalina.jar:7.0.59] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina.jar:7.0.59] at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) [catalina.jar:7.0.59] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [catalina.jar:7.0.59] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) [catalina.jar:7.0.59] at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074) [tomcat-coyote.jar:7.0.59] at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) [tomcat-coyote.jar:7.0.59] at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314) [tomcat-coyote.jar:7.0.59] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_79] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_79] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-coyote.jar:7.0.59] at java.lang.Thread.run(Thread.java:745) [na:1.7.0_79]Caused by: org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "test" (Class com.unicompayment.mmp.front.dto.MarketingEventDto), not marked as ignorable
解决方案
请求的JSON里面字段多余映射的实体类,可以通过在类的顶部添加@JsonIgnoreProperties
我最初引入2.X(jackson-annotations-2.7.8.jar)
<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.7.8</version> </dependency>
但是com.fasterxml.jackson.annotation.JsonIgnoreProperties没起作用,仍然报上述错误,查了很多网上资料没有找到原因,没有解决问题。
后来看到一篇国外资料:http://stackoverflow.com/questions/20986995/jsonignoreproperties-not-working
分析可能是jar版本冲突导致的生效,具体如下:
官方WIKI:https://github.com/FasterXML/jackson-databind/wiki
jackson 1.x和2.x版本的注解是放置在不同的包下的
1.x是在jackson core jar包org.codehaus.jackson.annotate下
2.x是在jackson-databind包com.fasterxml.jackson.annotation下
而且从堆栈错误信息路径是 org.codehaus.jackson.map.exc.UnrecognizedPropertyException,怀疑应该调用与包路径一致的1.x版本的jackson core jar包,因此引入新的jar
<dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-core-asl</artifactId> <version>1.9.12</version>
路径重新引用为
import org.codehaus.jackson.annotate.JsonIgnoreProperties;、@JsonIgnoreProperties(ignoreUnknown = true)public class MarketingEventDto implements Serializable { private static final long serialVersionUID = -398950270706722135L; private String mmpFlowNo; .....}
重新部署测试,不再报错,解决该问题。
参考资料:
1)http://stackoverflow.com/questions/20986995/jsonignoreproperties-not-working
2)http://blog.csdn.net/sdyy321/article/details/40298081
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