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问答 nutz内部转发失败
发布于 1648天前 作者 木易 1300 次浏览 复制 上一个帖子 下一个帖子
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代码如下：

    @At("/mobile")
    @Ok("re")
    public Object mobile(String mobile , String captcha,HttpSession session,HttpServletRequest req,HttpServletResponse res){
        String redisKey = CaptchaService.Template.LOGIN.getRedisKey(mobile);
        Object result = new UTF8JsonView().setData(Result.error("验证码错误"));
        if(true){
            try {
                      // code....
            } catch (AuthenticationException e) {
                // 用户不存在时报错
                if(e instanceof UnknownAccountException){
                    req.setAttribute("Referer","/cai/login/mobile");
                    result = "->:/cai/reg/mobile";
                }else{
                    result = new UTF8JsonView().setData(Result.sysError());
                }
            }
        }
        return result;
    }

debug时，最后返回的应该是转发的字符串，但是最后却报以下异常

java.lang.ClassCastException: java.lang.Boolean cannot be cast to java.lang.String
	at org.nutz.mvc.Mvcs.getLocalizationKey(Mvcs.java:108)
	at cn.wizzer.app.web.commons.processor.GlobalsSettingProcessor.process(GlobalsSettingProcessor.java:46)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at cn.wizzer.app.web.commons.processor.LogTimeProcessor.process(LogTimeProcessor.java:21)
	at org.nutz.mvc.impl.NutActionChain.doChain(NutActionChain.java:44)
	at org.nutz.mvc.impl.ActionInvoker.invoke(ActionInvoker.java:67)
	at org.nutz.mvc.ActionHandler.handle(ActionHandler.java:31)
	at org.nutz.mvc.NutFilter.doFilter(NutFilter.java:202)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at cn.wizzer.app.web.commons.filter.RouteFilter.doFilter(RouteFilter.java:31)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at org.nutz.mvc.WhaleFilter.doFilter(WhaleFilter.java:171)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:566)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:227)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:78)
	at org.nutz.mvc.view.ForwardView.render(ForwardView.java:72)
	at org.nutz.mvc.view.ViewZone.render(ViewZone.java:53)
	at org.nutz.mvc.impl.processor.ViewProcessor.process(ViewProcessor.java:60)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at org.nutz.mvc.impl.processor.MethodInvokeProcessor.process(MethodInvokeProcessor.java:33)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at org.nutz.mvc.impl.processor.AdaptorProcessor.process(AdaptorProcessor.java:38)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at org.nutz.mvc.impl.processor.ActionFiltersProcessor.process(ActionFiltersProcessor.java:58)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at cn.wizzer.app.web.commons.processor.XssSqlFilterProcessor.process(XssSqlFilterProcessor.java:37)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at cn.wizzer.app.web.commons.processor.NutShiroProcessor.process(NutShiroProcessor.java:72)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at org.nutz.mvc.impl.processor.ModuleProcessor.process(ModuleProcessor.java:123)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at org.nutz.mvc.impl.processor.EncodingProcessor.process(EncodingProcessor.java:27)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at org.nutz.mvc.impl.processor.UpdateRequestAttributesProcessor.process(UpdateRequestAttributesProcessor.java:15)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at cn.wizzer.app.web.commons.processor.GlobalsSettingProcessor.process(GlobalsSettingProcessor.java:49)
	at org.nutz.mvc.impl.processor.AbstractProcessor.doNext(AbstractProcessor.java:44)
	at cn.wizzer.app.web.commons.processor.LogTimeProcessor.process(LogTimeProcessor.java:21)
	at org.nutz.mvc.impl.NutActionChain.doChain(NutActionChain.java:44)
	at org.nutz.mvc.impl.ActionInvoker.invoke(ActionInvoker.java:67)
	at org.nutz.mvc.ActionHandler.handle(ActionHandler.java:31)
	at org.nutz.mvc.NutFilter.doFilter(NutFilter.java:202)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
	at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
	at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
	at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
	at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
	at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
	at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
	at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
	at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at cn.wizzer.app.web.commons.filter.RouteFilter.doFilter(RouteFilter.java:31)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at org.nutz.mvc.WhaleFilter.doFilter(WhaleFilter.java:171)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
	at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:214)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
	at org.eclipse.jetty.server.Server.handle(Server.java:502)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
	at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
	at java.lang.Thread.run(Thread.java:748)
15 回复 
UTF8JsonView view = new UTF8JsonView();
view.setData(Result.sysError());
result = view;

setData并没有直接返回view

@wendal 我看了setData方法，那个有返回this啊。
然后我测试时返回的也不是这个，返回的是“->:/cai/reg/mobile”字符串，我想用这个字符串转发，结果却失败了

at org.nutz.mvc.Mvcs.getLocalizationKey(Mvcs.java:108)

设置语言的时候，放了个boolean值？

@wendal 你指是哪的设置？配置文件里面吗

还有一种可能性是session持久化出问题

界面选语种的时候会设置一个值到session

@wendal 我打了断点，发现下面方法返回结果都是null

public static String getLocalizationKey() {
        return (String) getSessionAttrSafe(LOCALE_KEY);
    }

然后在下面这里，都是采用的后者，也就是“zh_CN”。
放行后结果又报错这里的错

String lKey = Strings.sBlank(Mvcs.getLocalizationKey(), getDefaultLocalizationKey());

看看哪里冒出来的boolean

@wendal
看见了，因为下面session去属性时报错，然后返回了false，在上层强转时就报转换异常了

public static Object getSessionAttrSafe(String key) {
        try {
            HttpSession session = getHttpSession(false);
            return session != null ? session.getAttribute(key) : null;
        }
        catch (Exception e) {
           // org.apache.shiro.session.UnknownSessionException: There is no session with id [2sq4brf6n0h83o4hm8ee74pm05]
            return false;
        }
    }

额，这个就奇怪了。。。 应该返回null才合理

@wendal
那这种情况该怎么解决？重写这个方法吗？

改了一下 https://gitee.com/nutz/nutz/commit/c8057ecd236cf7b513d15c9ef5513ec04eb4df45

不过，为啥会获取session失败呢？对应的异常是啥？

我退回之前版本后，又没有出现这个异常了，奇怪

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