Question

运行我的webportal一段时间后，我得到以下异常。我需要重新登录才能消除此错误。因此，我无法在eclipse上顺利运行我的开发环境。

这是我的AuthenticationFilter.java

public class AuthenticationFilter implements Filter {
    private static final Logger log = Logger.getLogger(AuthenticationFilter.class) ;
    static Map<String, String> permissionsMapping = new HashMap<String, String>();
    private static int domainOrGroupParentId = 0;
    static {
    }

    @Override
    public void destroy() {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {

        HttpServletRequest servletRequest = (HttpServletRequest) request;

        if (servletRequest.getRequestURI().contains("onLoadOfLoginPage")
                || servletRequest.getRequestURI().contains("Corporate")
                || servletRequest.getRequestURI().contains("mainDashboard")
                // ||
                // servletRequest.getRequestURI().contains("mainDashboardWithoutDomainOrGroupParent")
                || servletRequest.getRequestURI().contains("loginButtonPressedForSuperAdminView")
                // ||
                // servletRequest.getRequestURI().contains("loginButtonPressedForNonSuperAdmin")
                || servletRequest.getRequestURI().contains("resources")
                || servletRequest.getRequestURI().contains("session")
                || servletRequest.getRequestURI().contains("forgot_password")
                || servletRequest.getRequestURI().contains("resetPassword")) {
>>Line52>>      chain.doFilter(request, response);

        } else {
            HttpSession session = servletRequest.getSession(false);
            try {
                if (null == session || SessionDataManager.getInstance().getLoggedInWebAdminUser().getWebAdminUserPojo()
                        .getUsername() == null) {
                    RequestDispatcher dispatcher = request.getRequestDispatcher("onLoadOfLoginPage");
                    dispatcher.forward(request, response);
                    return;

                } else if (!servletRequest.getRequestURI().contains("get")) {

                    String username = (String) SessionDataManager.getInstance().getLoggedInWebAdminUser()
                            .getWebAdminUserPojo().getUsername();
                    String sessionID = session.getId();
                    domainOrGroupParentId = SessionDataManager.getInstance().getDomainIdFromRequest(servletRequest);
                    log.info("Attempting to maintain Session, with domainParent "+domainOrGroupParentId);
                    if (!WebAdminHelper.maintainSession(username, sessionID, domainOrGroupParentId)) {
                        RequestDispatcher dispatcher = request.getRequestDispatcher("onLoadOfLoginPage");
                        dispatcher.forward(request, response);
                        return;
                    }
                }
            } catch (Exception e) {

            }
            chain.doFilter(request, response);
        }
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {

    }

}

我得到的例外

type Exception report

message Handler processing failed; nested exception is java.lang.StackOverflowError

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.StackOverflowError
    org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1276)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:958)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    net.codejava.spring.AuthenticationFilter.doFilter(AuthenticationFilter.java:52)
root cause

java.lang.StackOverflowError
    com.google.gson.stream.JsonWriter.beforeName(JsonWriter.java:586)
    com.google.gson.stream.JsonWriter.writeDeferredName(JsonWriter.java:401)
    com.google.gson.stream.JsonWriter.value(JsonWriter.java:417)
    com.google.gson.internal.bind.TypeAdapters$13.write(TypeAdapters.java:362)
    com.google.gson.internal.bind.TypeAdapters$13.write(TypeAdapters.java:346)
    com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
    com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:89)
    com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:195)
    com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
    com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:89)
    com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:195)
    com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)

修改我已经确定了根源线。

response = new Gson（）。toJson（invException）;

的类型

InvalidObjectStateException invException

public class InvalidObjectStateException extends Exception {
    private static final long serialVersionUID = -9086960433236073019L;
    private static final Logger log = Logger.getLogger(InvalidObjectStateException.class);
    private String customErrorMessage = null;
    private Object exceptionCausingObject = null;

    public InvalidObjectStateException(String errorMessage, Object exceptionCausingObject) {
        super(errorMessage);
        this.customErrorMessage = errorMessage;
        log.info("InvalidObjectStateException : exceptionCausingObject"
                + ((exceptionCausingObject != null) ? exceptionCausingObject.getClass().toString() : ""));
        this.exceptionCausingObject = exceptionCausingObject;
    }

    public String getCustomErrorMessage() {
        return customErrorMessage;
    }

    public void setCustomErrorMessage(String customErrorMessage) {
        this.customErrorMessage = customErrorMessage;
    }

    public Object getExceptionCausingObject() {
        return exceptionCausingObject;
    }

    public void setExceptionCausingObject(Object exceptionCausingObject) {
        this.exceptionCausingObject = exceptionCausingObject;
    }
}

我在这里做错了什么？为什么Gason无法解析异常？

Answer 1

我认为这不是正确的例外来源。 net.codejava.spring.AuthenticationFilter.doFilter(AuthenticationFilter.java:52)。由于内存不足，它在这个位置失败了。

应该有另一个转换response(maybe)/object to json string的流程/请求。查看response对象，它应该有一个嵌套的无限对象引用。

Answer 2

Object exceptionCausingObject

中的问题

它有循环引用，因此Gson解析器无法正确解析它并抛出StackOverflowError

您可以将exceptionCausingObject类的某些字段标记为transient

private transient String name;

这会将他们排除在Gson序列化之外。

另一种选择是使用GraphAdapterBuilder。见here

HTTP状态500 - 处理程序处理失败;嵌套异常是java.lang.StackOverflowError

2 个答案: