No converter found for return value of type: class java.util.LinkedHashMap

[umi-soft]

Spring boot 1.5
fastjson 1.2.29
我通过如下配置启用
@bean
public HttpMessageConverters fastJsonHttpMessageConverters() {
FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
logger.info("create spring bean [fastJsonHttpMessageConverter] :"+fastJsonHttpMessageConverter.toString());
FastJsonConfig fastJsonConfig = new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);
HttpMessageConverter<?> converter = fastJsonHttpMessageConverter;
return new HttpMessageConverters(converter);
}
启动日志，也显示Bean创建了，但是仍旧出现如下错误：
/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/bin/java -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:60012,suspend=y,server=n -Dfile.encoding=UTF-8 -classpath "/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/htmlconverter.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/lib/javafx-doclet.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/lib/tools.jar:/Users/hujie/j2ee-application/git-repository/registration-platform/restful-api-core/target/classes:/Users/hujie/.m2/repository/org/springframework/boot/spring-boot-starter-validation/1.5.0.RELEASE/spring-boot-starter-validation-1.5.0.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/boot/spring-boot-starter/1.5.0.RELEASE/spring-boot-starter-1.5.0.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/boot/spring-boot/1.5.0.RELEASE/spring-boot-1.5.0.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/1.5.0.RELEASE/spring-boot-autoconfigure-1.5.0.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/boot/spring-boot-starter-logging/1.5.0.RELEASE/spring-boot-starter-logging-1.5.0.RELEASE.jar:/Users/hujie/.m2/repository/ch/qos/logback/logback-classic/1.1.9/logback-classic-1.1.9.jar:/Users/hujie/.m2/repository/ch/qos/logback/logback-core/1.1.9/logback-core-1.1.9.jar:/Users/hujie/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.22/jcl-over-slf4j-1.7.22.jar:/Users/hujie/.m2/repository/org/slf4j/jul-to-slf4j/1.7.22/jul-to-slf4j-1.7.22.jar:/Users/hujie/.m2/repository/org/slf4j/log4j-over-slf4j/1.7.22/log4j-over-slf4j-1.7.22.jar:/Users/hujie/.m2/repository/org/yaml/snakeyaml/1.17/snakeyaml-1.17.jar:/Users/hujie/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/8.5.11/tomcat-embed-el-8.5.11.jar:/Users/hujie/.m2/repository/org/hibernate/hibernate-validator/5.3.4.Final/hibernate-validator-5.3.4.Final.jar:/Users/hujie/.m2/repository/javax/validation/validation-api/1.1.0.Final/validation-api-1.1.0.Final.jar:/Users/hujie/.m2/repository/org/jboss/logging/jboss-logging/3.3.0.Final/jboss-logging-3.3.0.Final.jar:/Users/hujie/.m2/repository/com/fasterxml/classmate/1.3.3/classmate-1.3.3.jar:/Users/hujie/.m2/repository/org/springframework/boot/spring-boot-starter-web/1.5.0.RELEASE/spring-boot-starter-web-1.5.0.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/1.5.0.RELEASE/spring-boot-starter-tomcat-1.5.0.RELEASE.jar:/Users/hujie/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.11/tomcat-embed-core-8.5.11.jar:/Users/hujie/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/8.5.11/tomcat-embed-websocket-8.5.11.jar:/Users/hujie/.m2/repository/org/springframework/spring-web/4.3.6.RELEASE/spring-web-4.3.6.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/spring-aop/4.3.6.RELEASE/spring-aop-4.3.6.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/spring-beans/4.3.6.RELEASE/spring-beans-4.3.6.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/spring-context/4.3.6.RELEASE/spring-context-4.3.6.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/spring-webmvc/4.3.6.RELEASE/spring-webmvc-4.3.6.RELEASE.jar:/Users/hujie/.m2/repository/org/springframework/spring-expression/4.3.6.RELEASE/spring-expression-4.3.6.RELEASE.jar:/Users/hujie/.m2/repository/org/slf4j/slf4j-api/1.7.22/slf4j-api-1.7.22.jar:/Users/hujie/.m2/repository/org/springframework/spring-core/4.3.6.RELEASE/spring-core-4.3.6.RELEASE.jar:/Users/hujie/.m2/repository/org/apache/shiro/shiro-spring/1.3.2/shiro-spring-1.3.2.jar:/Users/hujie/.m2/repository/org/apache/shiro/shiro-core/1.3.2/shiro-core-1.3.2.jar:/Users/hujie/.m2/repository/commons-beanutils/commons-beanutils/1.9.3/commons-beanutils-1.9.3.jar:/Users/hujie/.m2/repository/commons-collections/commons-collections/3.2.2/commons-collections-3.2.2.jar:/Users/hujie/.m2/repository/org/apache/shiro/shiro-web/1.3.2/shiro-web-1.3.2.jar:/Users/hujie/.m2/repository/com/alibaba/fastjson/1.2.29/fastjson-1.2.29.jar:/Applications/IntelliJ IDEA 15.app/Contents/lib/idea_rt.jar" cn.com.taiji.registration.RestfulApiCoreApplication --spring.output.ansi.enabled=always
Connected to the target VM, address: '127.0.0.1:60012', transport: 'socket'

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:: Spring Boot :: (v1.5.0.RELEASE)

2017-03-27 09:44:06.165 INFO 62724 --- [ main] c.c.t.r.RestfulApiCoreApplication : Starting RestfulApiCoreApplication on bogon with PID 62724 (/Users/hujie/j2ee-application/git-repository/registration-platform/restful-api-core/target/classes started by hujie in /Users/hujie/j2ee-application/git-repository/registration-platform)
2017-03-27 09:44:06.171 INFO 62724 --- [ main] c.c.t.r.RestfulApiCoreApplication : No active profile set, falling back to default profiles: default
2017-03-27 09:44:06.347 INFO 62724 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@24642b28: startup date [Mon Mar 27 09:44:06 CST 2017]; root of context hierarchy
2017-03-27 09:44:08.180 INFO 62724 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'shiroSpringConfiguration' of type [class cn.com.taiji.registration.ShiroSpringConfiguration$$EnhancerBySpringCGLIB$$2181ac3e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-03-27 09:44:08.240 INFO 62724 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration' of type [class org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-03-27 09:44:08.249 INFO 62724 --- [ main] c.c.t.r.ShiroSpringConfiguration : create spring bean [shiroFilterFactoryBean] :org.apache.shiro.spring.web.ShiroFilterFactoryBean@53de0754
2017-03-27 09:44:08.517 INFO 62724 --- [ main] c.c.t.r.ShiroSpringConfiguration : create spring bean [shiroWebSecurityManager] :org.apache.shiro.web.mgt.DefaultWebSecurityManager@337f9499
2017-03-27 09:44:08.526 INFO 62724 --- [ main] c.c.t.r.ShiroSpringConfiguration : create spring bean [relationalDBRealm] :cn.com.taiji.registration.shiro.realms.RelationalDBRealm@6aa43a5e
2017-03-27 09:44:08.553 INFO 62724 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'relationalDBRealm' of type [class cn.com.taiji.registration.shiro.realms.RelationalDBRealm] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-03-27 09:44:08.579 INFO 62724 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'shiroWebSecurityManager' of type [class org.apache.shiro.web.mgt.DefaultWebSecurityManager] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-03-27 09:44:08.707 INFO 62724 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'validator' of type [class org.springframework.validation.beanvalidation.LocalValidatorFactoryBean] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-03-27 09:44:08.786 INFO 62724 --- [ main] c.c.t.r.ShiroSpringConfiguration : create spring bean [authorizationAttributeSourceAdvisor] :org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor@19d9a49d
2017-03-27 09:44:08.796 INFO 62724 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'authorizationAttributeSourceAdvisor' of type [class org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-03-27 09:44:09.532 INFO 62724 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-03-27 09:44:09.571 INFO 62724 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2017-03-27 09:44:09.574 INFO 62724 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.11
2017-03-27 09:44:09.705 INFO 62724 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-03-27 09:44:09.705 INFO 62724 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3362 ms
2017-03-27 09:44:10.018 INFO 62724 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-03-27 09:44:10.024 INFO 62724 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/]
2017-03-27 09:44:10.024 INFO 62724 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'shiroFilterFactoryBean' to: [/]
2017-03-27 09:44:10.238 INFO 62724 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/login],methods=[POST]}" onto public com.alibaba.fastjson.JSONObject cn.com.taiji.registration.controller.session.Login.login(java.lang.String)
2017-03-27 09:44:10.258 INFO 62724 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2017-03-27 09:44:10.259 INFO 62724 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2017-03-27 09:44:10.358 INFO 62724 --- [ main] o.s.w.s.h.BeanNameUrlHandlerMapping : Mapped URL path [/{system}] onto handler '/{system}'
2017-03-27 09:44:10.425 INFO 62724 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@24642b28: startup date [Mon Mar 27 09:44:06 CST 2017]; root of context hierarchy
2017-03-27 09:44:10.744 INFO 62724 --- [ main] c.c.t.r.RestfulApiCoreApplication : create spring bean [fastJsonHttpMessageConverter] :com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter@23da34b5
2017-03-27 09:44:11.270 INFO 62724 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2017-03-27 09:44:11.362 INFO 62724 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-03-27 09:44:11.370 INFO 62724 --- [ main] c.c.t.r.RestfulApiCoreApplication : Started RestfulApiCoreApplication in 6.195 seconds (JVM running for 7.176)
2017-03-27 09:44:20.531 INFO 62724 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2017-03-27 09:44:20.531 INFO 62724 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2017-03-27 09:44:20.553 INFO 62724 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 22 ms
2017-03-27 09:44:20.584 WARN 62724 --- [nio-8080-exec-1] o.s.web.servlet.PageNotFound : No mapping found for HTTP request with URI [/restful-api-core/s/login] in DispatcherServlet with name 'dispatcherServlet'
2017-03-27 09:44:20.629 ERROR 62724 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet dispatcherServlet threw exception

java.lang.IllegalArgumentException: No converter found for return value of type: class java.util.LinkedHashMap
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:187) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor.handleReturnValue(HttpEntityMethodProcessor.java:203) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:81) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:132) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:726) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:394) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:395) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:254) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:177) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.11.jar:8.5.11]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.11.jar:8.5.11]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]

2017-03-27 09:44:20.631 ERROR 62724 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost] : Exception Processing ErrorPage[errorCode=0, location=/error]

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalArgumentException: No converter found for return value of type: class java.util.LinkedHashMap
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:726) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:394) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311) ~[tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:395) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:254) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:177) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434) [tomcat-embed-core-8.5.11.jar:8.5.11]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.11.jar:8.5.11]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.11.jar:8.5.11]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]
Caused by: java.lang.IllegalArgumentException: No converter found for return value of type: class java.util.LinkedHashMap
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:187) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor.handleReturnValue(HttpEntityMethodProcessor.java:203) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:81) ~[spring-web-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:132) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.6.RELEASE.jar:4.3.6.RELEASE]
... 25 common frames omitted

[wenshao]

@VictorZeng 你帮看一下

[VictorZeng]

@Darkrake 换成 FastJsonHttpMessageConverter4 试试

[umi-soft]

FastJsonHttpMessageConverter4可以解决问题，谢谢