.SerializeWriter.writeString(SerializeWriter.java:1366)

    com.alibaba.fastjson.serializer.StringCodec.write(StringCodec.java:49)

    com.alibaba.fastjson.serializer.StringCodec.write(StringCodec.java:34)

    com.alibaba.fastjson.serializer.MapSerializer.write(MapSerializer.java:188)

    com.alibaba.fastjson.serializer.JSONSerializer.write(JSONSerializer.java:369)

    com.alibaba.fastjson.JSON.toJSONString(JSON.java:418)

    com.alibaba.fastjson.JSON.toJSONString(JSON.java:406)

    com.encrypt.Action.execute(Action.java:68)

    sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    java.lang.reflect.Method.invoke(Method.java:606)

    com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)

    com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)

    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)

    com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)

    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)

    com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java: