Я пытаюсь вызвать внешнее приложение Windows (например, calc.exe), когда пользователь нажимает кнопку в веб-приложении GWT. Есть ли способ, как это сделать?
Ниже приведены то, что я уже пробовал до сих пор:
1.) Пробовал Runtime.exec и ProcessBuilder, но в итоге получил ошибку компиляции GWT
Код Runtime.exec:
Process winCalc;
try {
winCalc = Runtime.getRuntime().exec("\"C:/Windows/System32/calc.exe\"");
winCalc.waitFor();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
Код Runtime.exec — ошибка компиляции GWT:
Rebinding dir.ClientGinjector
Checking rule <generate-with class='org.jsonmaker.gwt.rebind.JsonizerGenerator'/>
[ERROR] Errors in 'file:/C:/Users/blahblah/framework/Toolbar.java'
[ERROR] Line 962: No source code is available for type java.lang.Process; did you forget to inherit a required module?
[ERROR] Line 964: No source code is available for type java.lang.Runtime; did you forget to inherit a required module?
[ERROR] Line 969: No source code is available for type java.lang.InterruptedException; did you forget to inherit a required module?
[ERROR] Unable to find type 'dir.ClientGinjector'
[ERROR] Hint: Previous compiler errors may have made this type unavailable
[ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly
[ERROR] Errors in 'file:/C:/Users/blahblah/gin/ClientGinjector.java'
[ERROR] Line 60: Failed to resolve 'dir.ClientGinjector' via deferred binding
---
Код ProcessBuilder:
ProcessBuilder pbWinCalc = new ProcessBuilder ("C:/Windows/System32/calc.exe");
try {
Process pWinCalc = pbWinCalc.start();
System.out.println("[dan]: pWinCalc.exitValue() = " + pWinCalc.exitValue());
} catch (IOException e) {
System.out.println("[dan]: stacktrace = " + e.getMessage().toString());
}
Код ProcessBuilder — ошибка компиляции GWT:
Rebinding dir.ClientGinjector
Checking rule <generate-with class='org.jsonmaker.gwt.rebind.JsonizerGenerator'/>
[ERROR] Errors in 'file:/C:/Users/blahblah/framework/Toolbar.java'
[ERROR] Line 974: No source code is available for type java.lang.ProcessBuilder; did you forget to inherit a required module?
[ERROR] Line 977: No source code is available for type java.lang.Process; did you forget to inherit a required module?
[ERROR] Unable to find type 'dir.ClientGinjector'
[ERROR] Hint: Previous compiler errors may have made this type unavailable
[ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly
[ERROR] Errors in 'file:/C:/Users/blahblah/gin/ClientGinjector.java'
[ERROR] Line 60: Failed to resolve 'dir.ClientGinjector' via deferred binding
2.) Попытался вызвать ProcessBuilder в отдельном классе, который расширяет RemoteServiceServlet в соответствии с предложением в этой ссылке (GWT + ProcessBuilder).
Код ProcessBuilder:
import java.io.IOException;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
public class WinCalcServiceImpl extends RemoteServiceServlet {
private static final long serialVersionUID = 7495421224005326634L;
public void getWinCalculator(){
//Dan - Using ProcessBuilder
final ProcessBuilder pbWinCalc = new ProcessBuilder ("C:/Windows/System32/calc.exe");
try {
final Process pWinCalc = pbWinCalc.start();
System.out.println("[dan]: pWinCalc.exitValue() = " + pWinCalc.exitValue());
} catch (final IOException e) {
System.out.println("[dan]: stacktrace = " + e.getMessage().toString());
}
// p.waitFor();
}
}
ProcessBuilder — ошибка компиляции GWT:
Rebinding com.gwtplatform.dispatch.shared.DispatchService
Invoking generator com.google.gwt.user.rebind.rpc.DlServiceInterfaceProxyGenerator
Running DLProxyCreator
[ERROR] An internal compiler exception occurred
com.google.gwt.dev.jjs.InternalCompilerException: Failed to get JNode
at com.google.gwt.dev.jjs.impl.TypeMap.get(TypeMap.java:140)
at com.google.gwt.dev.jjs.impl.TypeMap.get(TypeMap.java:71)
at com.google.gwt.dev.jjs.impl.BuildTypeMap.getType(BuildTypeMap.java:730)
at com.google.gwt.dev.jjs.impl.BuildTypeMap.process(BuildTypeMap.java:814)
at com.google.gwt.dev.jjs.impl.BuildTypeMap.access$700(BuildTypeMap.java:99)
at com.google.gwt.dev.jjs.impl.BuildTypeMap$BuildDeclMapVisitor.process(BuildTypeMap.java:325)
at com.google.gwt.dev.jjs.impl.BuildTypeMap$BuildDeclMapVisitor.visit(BuildTypeMap.java:244)
at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1198)
at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:687)
at com.google.gwt.dev.jjs.impl.BuildTypeMap.createPeersForNonTypeDecls(BuildTypeMap.java:637)
at com.google.gwt.dev.jjs.impl.BuildTypeMap.exec(BuildTypeMap.java:514)
at com.google.gwt.dev.jjs.impl.BuildTypeMap.exec(BuildTypeMap.java:523)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile(JavaToJavaScriptCompiler.java:599)
at com.google.gwt.dev.jjs.JavaScriptCompiler.precompile(JavaScriptCompiler.java:33)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:284)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:233)
at com.google.gwt.dev.Precompile.precompile(Precompile.java:145)
at com.google.gwt.dev.Compiler.run(Compiler.java:232)
at com.google.gwt.dev.Compiler.run(Compiler.java:198)
at com.google.gwt.dev.Compiler$1.run(Compiler.java:170)
at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:88)
at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:82)
at com.google.gwt.dev.Compiler.main(Compiler.java:177)
[ERROR] <no source info>: public class com.google.gwt.user.server.rpc.RemoteServiceServlet
extends com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet
implements : com.google.gwt.user.server.rpc.SerializationPolicyProvider
/* fields */
private final [unresolved] java.lang.Object delegate
private final [unresolved] Map<java.lang.String,Unresolved type com.google.gwt.user.server.rpc.SerializationPolicy> serializationPolicyCache
/* methods */
public void <init>()
[unresolved] public void <init>(java.lang.Object)
[unresolved] protected void checkPermutationStrongName() throws Unresolved type java.lang.SecurityException
[unresolved] protected Unresolved type com.google.gwt.user.server.rpc.SerializationPolicy doGetSerializationPolicy(Unresolved type javax.servlet.http.HttpServletRequest, java.lang.String, java.lang.String)
[unresolved] private Unresolved type com.google.gwt.user.server.rpc.SerializationPolicy getCachedSerializationPolicy(java.lang.String, java.lang.String)
[unresolved] public final Unresolved type com.google.gwt.user.server.rpc.SerializationPolicy getSerializationPolicy(java.lang.String, java.lang.String)
[unresolved] static Unresolved type com.google.gwt.user.server.rpc.SerializationPolicy loadSerializationPolicy(Unresolved type javax.servlet.http.HttpServlet, Unresolved type javax.servlet.http.HttpServletRequest, java.lang.String, java.lang.String)
[unresolved] protected void onAfterResponseSerialized(java.lang.String)
[unresolved] protected void onBeforeRequestDeserialized(java.lang.String)
[unresolved] public java.lang.String processCall(java.lang.String) throws Unresolved type com.google.gwt.user.client.rpc.SerializationException
public final void processPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) throws java.io.IOException, javax.servlet.ServletException, com.google.gwt.user.client.rpc.SerializationException
[unresolved] private void putCachedSerializationPolicy(java.lang.String, java.lang.String, Unresolved type com.google.gwt.user.server.rpc.SerializationPolicy)
[unresolved] protected boolean shouldCompressResponse(Unresolved type javax.servlet.http.HttpServletRequest, Unresolved type javax.servlet.http.HttpServletResponse, java.lang.String)
[unresolved] private void writeResponse(Unresolved type javax.servlet.http.HttpServletRequest, Unresolved type javax.servlet.http.HttpServletResponse, java.lang.String) throws java.io.IOException
org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding
[ERROR] at WinCalcServiceImpl.java(7): class WinCalcServiceImpl
com.google.gwt.dev.jjs.ast.JClassType
