[英]FileNotFoundException with Nashorn
我和nashorn玩了一点,我做了一个表单和一个servlet,但是我无法获取脚本文件。 我有这个代码。 对servlet的调用以及hello world消息都运行良好。
engine.eval(new FileReader("C:\\Users\\Gabriel\\Documents\\NetBeansProjects\\WebApplication1\\src\\java\\paquete\\script.js"));
给定绝对路径可以完美地工作...但是我想给出相对路径
HttpSession sesion=request.getSession();
String submit=request.getParameter("submit");
ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
try {
System.out.println("PATH:"+request.getContextPath());
engine.eval(new FileReader("src/java/paquete/script.js"));
} catch (ScriptException ex) {
Logger.getLogger(Servlet.class.getName()).log(Level.SEVERE, null, ex);
}
Invocable invocable = (Invocable) engine;
switch(submit){
case "Login":
try {
engine.eval("print('Hello World!');");
} catch (ScriptException ex) {
Logger.getLogger(Servlet.class.getName()).log(Level.SEVERE, null, ex);
}
break;
}
我的脚本文件位于servlet所在的位置。
给我这种痕迹
java.io.FileNotFoundException: src\java\paquete\script.js (El sistema no puede encontrar la ruta especificada)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:131)
at java.io.FileInputStream.<init>(FileInputStream.java:87)
at java.io.FileReader.<init>(FileReader.java:58)
at paquete.Servlet.doPost(Servlet.java:67)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:745)
非常感谢您的帮助
之前我也遇到过类似的问题,而解决问题的方法是评估“加载” javascript函数。 因此,与其做
engine.eval(new FileReader("C:\\Users\\Gabriel\\Documents\\NetBeansProjects\\WebApplication1\\src\\java\\paquete\\script.js"));
你可以尝试做
engine.eval("load('src/java/paquette/script.js')");
然后使用Invocable引擎。
希望它会有所帮助!
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