SSM，Conllroller接收json解析失败，报错StandardWrapperValve.invoke，解决方案

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于 2021-04-18 10:31:28 发布

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分类专栏： SSM ajax 文章标签： ajax json java ssm

本文链接：https://blog.youkuaiyun.com/qq_38848781/article/details/115820086

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本文介绍了一个关于Jackson版本不一致导致的NoClassDefFoundError错误，并提供了详细的解决方案，包括调整POM文件中的依赖版本。

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报错

18-Apr-2021 09:51:33.606 严重 [http-nio-8080-exec-6] org.apache.catalina.core.StandardWrapperValve.invoke 在路径为/Aplp_war的上下文中，Servlet[DispatcherServlet]的Servlet.service（）引发了具有根本原因的异常Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/exc/InputCoercionException
	java.lang.ClassNotFoundException: com.fasterxml.jackson.core.exc.InputCoercionException
		at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1365)
		at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188)
		at com.fasterxml.jackson.databind.deser.std.JdkDeserializers.<clinit>(JdkDeserializers.java:26)
		at com.fasterxml.jackson.databind.deser.BasicDeserializerFactory.findDefaultDeserializer(BasicDeserializerFactory.java:1852)
		at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.findStdDeserializer(BeanDeserializerFactory.java:167)
		at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:131)
		at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:411)
		at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:349)
		at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)
		at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
		at com.fasterxml.jackson.databind.deser.DeserializerCache.hasValueDeserializerFor(DeserializerCache.java:191)
		at com.fasterxml.jackson.databind.DeserializationContext.hasValueDeserializerFor(DeserializationContext.java:421)
		at com.fasterxml.jackson.databind.ObjectMapper.canDeserialize(ObjectMapper.java:3043)
		at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.canRead(AbstractJackson2HttpMessageConverter.java:180)
		at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:200)
		at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:158)
		at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:131)
		at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)
		at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167)
		at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)
		at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
		at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)
		at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)
		at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
		at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
		at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
		at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
		at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
		at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
		at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
		at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
		at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
		at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
		at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
		at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
		at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
		at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
		at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
		at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
		at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
		at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
		at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
		at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
		at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
		at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
		at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
		at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
		at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
		at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
		at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
		at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
		at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)
		at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
		at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
		at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
		at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
		at java.base/java.lang.Thread.run(Thread.java:830)

我的代码

Conllroller

@RequestMapping(value="/Sign",method= RequestMethod.POST)
public String Sign(@RequestBody Sign user){
    
    System.out.println(user.toString());
    
    return null;
}

ajax

function loginPost() {
   $.ajax({
      url: "http://localhost:8080/Aplp_war/Login/sign.action",
      contentType: "application/json;charset=utf-8",
      data:getText(),
      dataType: "jsonp",
      type: "POST",
      xhrFields: {withCredentials: true},
      success:function(data) {
         console.log(data);
         alert(data);
      }, error:function(XMLResponse){
         console.log(XMLResponse.responseText);
         //alert(XMLResponse.responseText);
      }
   });
}

//获取文本信息并制作出Json
function getText() {
   var idText = document.getElementById("id").value;
   var pwdText = document.getElementById("pwd").value;
   var idType = "id";
   if (checkEmail(idText)) {
      idType = "Email";
   } else if (checkMobile(idText)) {
      idType = "phone";
   }
   var ret=new Object();
   ret.basis=idType;
   ret.value=idText;
   ret.password=pwdText;
   return JSON.stringify(ret);
}

问题原因

是json引包的问题,我引入Jackson的jar包的版本不一致,所以导致了这个问题,看pom.xml

<!--               Jackson            -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.10.0</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.9.8</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.9.8</version>
</dependency>
<!--               Jackson            -->

解决办法

把引入Jackson的jar包的版本写成一致的，就能解决了，看pom.xml

<!--               Jackson            -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.10.0</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.10.0</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.10.0</version>
</dependency>
<!--               Jackson            -->