Question

我安装了新的JDK 1.8版本：40现在我正在从一个有效的javascript函数中跟踪异常间歇性，有什么想法？

java version "1.8.0_40-ea"
Java(TM) SE Runtime Environment (build 1.8.0_40-ea-b19)
Java HotSpot(TM) 64-Bit Server VM (build 25.40-b23, mixed mode)

例外：

.....
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.script.ScriptException: TypeError: function __noSuchMethod__() { [native code] } is not a constructor function in <eval> at line number 21
at jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:455)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:439)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:401)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:397)
at jdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:152)
at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:264)
at com.nube.portal.engines.js.JsEngine.eval(JsEngine.java:101)
... 74 more

Caused by: <eval>:21 TypeError: function __noSuchMethod__() { [native code] } is not a constructor function
at jdk.nashorn.internal.runtime.ECMAErrors.error(ECMAErrors.java:57)
at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:213)
at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:185)
at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:172)
at jdk.nashorn.internal.runtime.ScriptFunctionData.getBestConstructor(ScriptFunctionData.java:239)
at jdk.nashorn.internal.runtime.ScriptFunction.findNewMethod(ScriptFunction.java:474)
at jdk.nashorn.internal.runtime.ScriptObject.lookup(ScriptObject.java:1874)
at jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:100)
at jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:94)
at jdk.internal.dynalink.support.CompositeTypeBasedGuardingDynamicLinker.getGuardedInvocation(CompositeTypeBasedGuardingDynamicLinker.java:176)
at jdk.internal.dynalink.support.CompositeGuardingDynamicLinker.getGuardedInvocation(CompositeGuardingDynamicLinker.java:124)
at jdk.internal.dynalink.support.LinkerServicesImpl.getGuardedInvocation(LinkerServicesImpl.java:149)
at jdk.internal.dynalink.DynamicLinker.relink(DynamicLinker.java:233)
at jdk.nashorn.internal.scripts.Script$Recompilation$9$134AAA$\^eval\_.L:6$http(<eval>:21)
at jdk.nashorn.internal.scripts.Script$Recompilation$8$977AA$\^eval\_.L:6$get(<eval>:41)
at jdk.nashorn.internal.scripts.Script$7$\^eval\_.:program(<eval>:1)
at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:636)
at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:229)
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:387)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:437)
... 79 more

代码：此实用程序将有助于拨打休息服务。

(function (global, factory) {

factory(global.Rest = {});

}(this, function (rest) {

rest.http = function(url, request, method) {

    method = (method == null?"GET":method);

    if(request != undefined){
        for (var key in request) {
            if (request.hasOwnProperty(key)) {
                url = url + key+"="+request[key] +"&";
            }               
        }
    }

    with (new JavaImporter(java.io, java.net)) {
        var is = new URL(url).openConnection();
        try {
            is.setRequestProperty("Content-Type", "application/json");
            is.setRequestMethod(method);
            var reader = new BufferedReader(
                new InputStreamReader(is.getInputStream()));
            var buf = '', line = null;
            while ((line = reader.readLine()) != null) {
                buf += line;
            }
        } finally {
           reader.close();
        }
        return buf;
    }
};

rest.get = function(url, request){
    return JSON.parse(rest.http(url, request, "GET"));
};

}));

现在我正在使用Rest.get（）进行服务调用

var result = Rest.get("http://someurl?...");

此调用可以正常运行，并在一段时间后开始抛出异常。

Answer 1

我遇到了同样的问题。

可能，这是JavaImporter的错误。

我没有使用JavaImpoter解决了这个问题。

Answer 2

我用下面的代码摆脱了这个异常：

class Human(models.Model):
    SHIRT_SIZES = (('XXS', 'XXS'), ('XS', 'XS'), ('S', 'S'), ('M', 'M'), ('L', 'L'), ('XL', 'XL'), ('XXL', 'XXL'))
    team = models.ForeignKey(Team, on_delete=models.CASCADE)
    first_name = models.CharField(max_length=16)
    last_name = models.CharField(max_length=16)
    jersey_size = models.CharField(max_length=4, choices=SHIRT_SIZES, blank=True)
    slug = models.SlugField(blank=True)

    def save(self, *args, **kwargs):
        self.slug = slugify(self.first_name + ' ' + self.last_name)
        super(Human, self).save(*args, **kwargs)

    def __str__(self):
        return self.first_name + ' ' + self.last_name


class Player(Human):
    year_of_birth = models.IntegerField(validators=[MinValueValidator(1900), MaxValueValidator(2100)], blank=True, null=True)
    jersey_number = models.IntegerField(validators=[MinValueValidator(0), MaxValueValidator(99)], blank=True, null=True)
    all_star_game = models.ForeignKey(AllStarGame, on_delete=models.CASCADE, blank=True, null=True)

我使用importClass代替JavaImporter。

最新的JDK 8 Build 40正在从Nashorn Engine返回间歇性异常

2 个答案: