Java实例方法
Java实例方法
提问于 2017-10-16 21:38:59
我想试试Nashorn脚本功能。一切正常，我似乎能够从我的.js脚本调用静态方法，如下所示：
var fun3 = function() {
print("Another day!");
var Go = Java.type('somePack.Go');
var result = Go.fun1('John Doe');
print("\n" + result);
}在我的"Go“java类中：
public static String fun1(String name) {
System.out.format("Hi there from Java, %s", name);
return "greetings from java";
}但是我想做的是使fun1方法非静态，使它成为一个实例方法。
public String fun1(String name) {
System.out.format("Hi there from Java, %s", name);
return "greetings from java";
}在我的script.js中，我确实尝试过：
var Go = new Java.type('somePack.Go');但我知道错误是：
Caused by: <eval>:19 TypeError: function type() { [native code] } is not a constructor function有什么简单的方法可以实现我想要的目标吗？
谢谢
完整堆栈：
at jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:470)
at jdk.nashorn.api.scripting.NashornScriptEngine.invokeImpl(NashornScriptEngine.java:392)
at jdk.nashorn.api.scripting.NashornScriptEngine.invokeFunction(NashornScriptEngine.java:190)
at somePack.Go.go(Go.java:35)
at somePack.Go.main(Go.java:16)
Caused by: <eval>:19 TypeError: function type() { [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:244)
at jdk.nashorn.internal.runtime.ScriptFunction.findNewMethod(ScriptFunction.java:758)
at jdk.nashorn.internal.runtime.ScriptObject.lookup(ScriptObject.java:1827)
at jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:104)
at jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(NashornLinker.java:98)
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:154)
at jdk.internal.dynalink.DynamicLinker.relink(DynamicLinker.java:253)
at jdk.nashorn.internal.scripts.Script$Recompilation$2$384$\^eval\_.fun3(<eval>:19)
at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:637)
at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:494)
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:393)
at jdk.nashorn.api.scripting.ScriptObjectMirror.callMember(ScriptObjectMirror.java:199)
at jdk.nashorn.api.scripting.NashornScriptEngine.invokeImpl(NashornScriptEngine.java:386)回答 1
Stack Overflow用户
回答已采纳
发布于 2017-10-17 12:13:32
你应该用
var Go = Java.type('somePack.Go');
var goObject = new Go();页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/46779508
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