关于springmvc的jackson.jar问题(jar包已引用)

[夙魔天]

我用的是springmvc4.3.6 换了很多版本的jackson.jar
jar包已经添加进web-inf下的lib中了,
springmvc-server.xml中也配置了

<mvc:annotation-driven />

controller中使用的是ResponseBody注解的模式

希望高手能够指点一二!万分感谢!

@RequestMapping("user/douseradd.html")
	@ResponseBody
	public Map<String,Object> doUserAdd(HttpSession session,@ModelAttribute("form")  User user){
		System.out.println("uname---->"+user.getUname()+"upassword-->"+user.getUpassword());
		//声明一个标记
		int status=0;
		System.out.println("初始化新增返回值-------------------->status---->"+status);
		try {
			status=userService.addUser(user);
			//System.out.println("新增用户返回值-------------------->status---->"+status);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		Map<String,Object> resultMap=new HashMap<String,Object>();
		if(status==1){
			System.out.println("------------------------>插入成功");
			resultMap.put("statusCode","200");
			resultMap.put("message","操作成功");
			resultMap.put("rel","");
			resultMap.put("callbackType","closeCurrent");
			resultMap.put("forwardUrl","");
			return resultMap;
		}else{
			System.out.println("------------------------>插入失败");
			resultMap.put("statusCode","300");
			resultMap.put("message","操作失败");
			resultMap.put("rel","");
			resultMap.put("callbackType","closeCurrent");
			resultMap.put("forwardUrl","");
			return resultMap;
		}
	}

依然出现下面在错误

org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation
	at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:200)
	at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:174)
	at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:81)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:132)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

[NANU-NANA]

<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-core-lgpl</artifactId>
    <version>1.8.1</version>
</dependency>

<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-lgpl</artifactId>
    <version>1.8.1</version>
</dependency>

[宝贝一路向前]

我的也是出现 @RequestBody 请求 JSON 异常。 springmvc4.3.8 项目中引用了 jackson-all-2.8.0 jar 包。 在 springmvc.xml 配置 <mvc:default-servlet-handler /> <bean class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean" id="contentNegotiationManagerFactoryBean"> <property name="favorPathExtension" value="false" /> <property name="favorParameter" value="false" /> <property name="ignoreAcceptHeader" value="false" /> <property name="mediaTypes"> <map> <entry key="xml" value="application/xml" /> <entry key="json" value="application/json" /> <entry key="xls" value="application/vnd.ms-excel" /> </map> </property> </bean> <bean id="stringConverter" class="org.springframework.http.converter.StringHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/plain;charset=UTF-8</value> <value>application/json</value> </list> </property> </bean> <bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> </bean> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="stringConverter" /> <ref bean="jsonConverter" /> </list> </property> </bean> public class BaseRequest { public String Code; public int PageIndex; public int PageSize; } @ResponseBody @RequestMapping(value = "/MyData",method={RequestMethod.POST}) public BaseResult MyData(@RequestBody BaseRequest req) { BaseResult retObj = new BaseResult(); retObj.RetCode = "00000"; retObj.RetMsg = "test"; return retObj; } jsp $.ajax({ url:'/MyTest/Test/MyData', data:{"Code":"test","PageIndex":1,"PageSize":1}, type:"POST", dataType:"json", contentType:"application/json;charset=utf-8", success:function(data) { alert(data.RetMsg); }, error:function(XMLHttpRequest, textStatus, errorThrown) { alert(XMLHttpRequest.status); } }) 却报 400 错误， WARNING: Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON document: Unrecognized token 'Code': was expecting ('true', 'false' or 'null') at [Source: java.io.PushbackInputStream@16c4641a; line: 1, column: 6]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'Code': was expecting ('true', 'false' or 'null') at [Source: java.io.PushbackInputStream@16c4641a; line: 1, column: 6] 也试过 ajax 中的数据 key 不带双引号。 如果 去掉 @RequestBody 则正常，只是接收不到ajax的数据。

[xiaoruiqing328]

@RequestMapping("user/douseradd.html") dispatcherservlet 不要以 html.、或者htm结尾 换个类似与.do .aaaa什么的

[xiaoruiqing328]

只要配置了注解驱动 并且有加入json的jar包 当然json的jar包版本要对 会将对象自动转换成json格式的 我用的不需要什么json转换的jar包

[JessyJ_C]

@RequestBody删了就好了，习惯把@Responsebody写requestmapping下面