| 2015-03-15 18:56 | 题主 | ||||||||
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Java8在ServerScript中对Java数组采用join方式，报has no such function "join" 错误提示：TypeError: [Ljava.lang.String;@10ebb76 has no such function "join"源代码中，在Moudle的InitScript中有request.setAttribute("jsRoleArrayText","['"+request.getAttribute("sys.userRoles").join("','") +"']"); ------------------------------------------------------------------------------ 原因join方法适用于JavaScritp数组，不适用于Java数组。 sys.userRoles是Java数组，因此无join方法。 Java8 ServerScript(Nashorn)采用编译运行方式，Java8之前的ServerScript(Rhino)采用解释运行的方式，Rhino存在隐式转换。 |
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| 2015-03-16 00:01 | #1 | ||||||||
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补充 InitScript内容： request.setAttribute("jsRoleArrayText","['"+request.getAttribute("sys.userRoles").join("','") +"']"); Wb.println(request,request.getAttribute("sys.userRoles")); Wb.println(request,request.getAttribute("jsRoleArrayText")); Java7下控制台显示： [Ljava.lang.String;@1edf6a9 ['23SKALGNXQ0U','13MQDOSBYDPX','23T8F1APQUTZ','23SKALGNXQ0S'] java8下控制台显示： javax.script.ScriptException: TypeError: [Ljava.lang.String;@1dc48d9 has no such function "join" in <eval> at line number 1 at jdk.nashorn.api.scripting.NashornScriptEngine.throwAsScriptException(NashornScriptEngine.java:455) at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:416) at jdk.nashorn.api.scripting.NashornScriptEngine.access$300(NashornScriptEngine.java:70) at jdk.nashorn.api.scripting.NashornScriptEngine$3.eval(NashornScriptEngine.java:499) at com.webbuilder.common.ScriptBuffer.run(ScriptBuffer.java:41) at com.webbuilder.common.Parser.createModule(Parser.java:345) at com.webbuilder.common.Parser.parse(Parser.java:96) at com.webbuilder.common.Main.service(Main.java:36) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:285) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2439) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2428) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Unknown Source) Caused by: <eval>:1 TypeError: [Ljava.lang.String;@1dc48d9 has no such function "join" at jdk.nashorn.internal.runtime.ECMAErrors.error(ECMAErrors.java:57) at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:213) at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:185) at jdk.nashorn.internal.runtime.ECMAErrors.typeError(ECMAErrors.java:172) at jdk.nashorn.internal.runtime.linker.NashornBottomLinker.linkBean(NashornBottomLinker.java:103) at jdk.nashorn.internal.runtime.linker.NashornBottomLinker.getGuardedInvocation(NashornBottomLinker.java:71) at jdk.internal.dynalink.support.CompositeGuardingDynamicLinker.getGuardedInvocation(CompositeGuardingDynamicLinker.java:124) at jdk.internal.dynalink.support.LinkerServicesImpl.getGuardedInvocation(LinkerServicesImpl.java:149) at jdk.internal.dynalink.DynamicLinker.relink(DynamicLinker.java:233) at jdk.nashorn.internal.scripts.Script$Recompilation$7$11$\^eval\_.L:1(<eval>:1) at jdk.nashorn.internal.scripts.Script$6$\^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:414) ... 29 more |
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| 2015-03-16 12:12 | #2 | ||||||||
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在Zhao总的帮助下已经解决： 问题出在javaArray和jsArray上，之前貌似可以自动转换，java8后不行了，只能手动转换一下。 代码如下： var javaArray=request.getAttribute("sys.userRoles"); var jsArray=[]; for(var index in javaArray) jsArray.push(javaArray[index]); request.setAttribute("jsRoleArrayText","['"+ jsArray.join("','") +"']"); |
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| 2015-03-17 09:41 | #3 | ||||||||
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java8 Nashorn引擎采用编译运行，之前的Rhino貌似解释运行 | ||||||||
| 2015-03-20 09:01 | #4 | ||||||||
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昨天群里说加上一行代码： load("nashorn:mozilla_compat.js"); nashorn就可以兼容rhino |
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| 2015-03-27 13:16 | #5 | ||||||||
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在ServerScript中默认的原类型是JavaScript类型，如果需要使用Java类型，可以使用诸如java.lang.String(jsString)之类的方法转换。 | ||||||||