Controller执行serial都是没有问题的，返回map给前端报错了

Question

执行放开断点之后报下面的错，是什么原因导致的，改怎么解决呢？？

2017-12-28 10:19:55,975 DEBUG [com.hundsun.jresplus.web.servlet.DispatcherServlet] - Could not complete request
org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.StackOverflowError
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:839)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    at com.hundsun.jresplus.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:48)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.hundsun.jres.bizframe.core.framework.filter.PermissionFilter.doFilter(PermissionFilter.java:212)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.chamc.filter.AuthFilter.doFilter(AuthFilter.java:63)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.hundsun.jres.bizframe.core.framework.filter.CharsetConversion.doFilter(CharsetConversion.java:40)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.hundsun.jres.bizframe.core.framework.filter.CSRFFilter.doFilter(CSRFFilter.java:54)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.StackOverflowError
    at org.codehaus.jackson.impl.JsonWriteContext.<init>(JsonWriteContext.java:44)
    at org.codehaus.jackson.impl.ObjectWContext.<init>(JsonWriteContext.java:188)
    at org.codehaus.jackson.impl.JsonWriteContext.createChildObjectContext(JsonWriteContext.java:70)
    at org.codehaus.jackson.impl.JsonGeneratorBase.writeStartObject(JsonGeneratorBase.java:173)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:133)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:21)
    at org.codehaus.jackson.map.ser.MapSerializer.serializeFields(MapSerializer.java:202)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:138)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:21)
    at org.codehaus.jackson.map.ser.MapSerializer.serializeFields(MapSerializer.java:202)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:138)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:21)
    at org.codehaus.jackson.map.ser.MapSerializer.serializeFields(MapSerializer.java:202)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:138)
    at org.codehaus.jackson.map.ser.MapSerializer.serialize(MapSerializer.java:21)
    at org.codehaus.jackson.map.ser.MapSerializer.serializeFields(MapSerializer.java:202)

Answer 1

你map 将自己放进去了啊 map.put("xx", map)
导致序列化的时候循环了 堆栈溢出

Answer 2

问题楼上已经说了，你应该写成 map.put("errorMsg", result);