Come salvare la cartella di lavoro Excel utilizzando l'API com4j senza che venga richiesto

Question

Sto tentando di salvare una cartella di lavoro che è stata modificata automaticamente. Ecco un esempio:

import excel.*; 
import com4j.Variant; 
import static com4j.Variant.MISSING; 


public class ExcelDemo { 
    public static void main(String[] args) { 
    _Application app = excel.ClassFactory.createApplication(); 
    app.visible(0,false); 

    //Variant readOnly = new Variant(Variant.Type.VT_BOOL); 
    //readOnly.set(0); 
    //Variant ignoreReadOnly = new Variant(Variant.Type.VT_BOOL); 
    //ignoreReadOnly.set(1); 
    //Variant saveBeforeExit = new Variant(Variant.Type.VT_BOOL); 
    //saveBeforeExit.set(1); 

    app.workbooks().open(
     "C:/dev/test.xlsx", 
     MISSING, 
     MISSING, 
     MISSING, 
     MISSING,  
     MISSING,  
     MISSING,  
     MISSING, 
     MISSING,  
     MISSING,  
     MISSING,  
     MISSING, 
     MISSING,  
     MISSING,  
     MISSING,  
     0); 
    app.calculate(0); 
    app.save(MISSING,0); 
    app.workbooks().close(0); 
    //app.workbooks().close(saveBeforeExit,MISSING,MISSING); 
} 

}

Il codice di cui sopra è stato eseguito da un file formica e prodotto il seguente errore:

run: 
[java] Exception in thread "main" com4j.ComException: 800a03ec (Unknown error) : The file could not be accessed. Try one of the following: 
[java] 
[java] ò Make sure the specified folder exists. 
[java] ò Make sure the folder that contains the file is not read-only. 
[java] ò Make sure the file name does not contain any of the following characters: < > ? [ ] : | or * 
[java] ò Make sure the file/path name doesn't contain more than 218 characters. : .\invoke.cpp:460 
[java]  at com4j.Wrapper.invoke(Wrapper.java:122) 
[java]  at $Proxy5.save(Unknown Source) 
[java]  at ExcelDemo.main(ExcelDemo.java:36) 
[java] Caused by: com4j.ComException: 800a03ec (Unknown error) : The file could not be accessed. Try one of the following: 
[java] 
[java] ò Make sure the specified folder exists. 
[java] ò Make sure the folder that contains the file is not read-only. 
[java] ò Make sure the file name does not contain any of the following characters: < > ? [ ] : | or * 
[java] ò Make sure the file/path name doesn't contain more than 218 characters. : .\invoke.cpp:460 
[java]  at com4j.Native.invoke(Native Method) 
[java]  at com4j.StandardComMethod.invoke(StandardComMethod.java:95) 
[java]  at com4j.Wrapper$InvocationThunk.call(Wrapper.java:258) 
[java]  at com4j.Task.invoke(Task.java:44) 
[java]  at com4j.ComThread.run0(ComThread.java:149) 
[java]  at com4j.ComThread.run(ComThread.java:125) 
[java] Java Result: 1 

Ho provato le seguenti cose e nessuno era successo:

1. impostazione del parametro readOnly su false
2. impostazione del parametro ignoreReadOnly true
3. Fare entrambe 1 e 2
4. passando l'oggetto saveBeforeExit al metodo save

C'è un modo per salvare una cartella di lavoro senza che venga richiesto? Si noti che il codice sopra riportato apre il file e calcola le formule senza errori.

Grazie

Answer 1

Ok ecco la soluzione:

import excel.*; 
import com4j.Variant; 
import static com4j.Variant.MISSING; 


public class ExcelDemo { 
    public static void main(String[] args) { 
    _Application app = excel.ClassFactory.createApplication(); 
    app.visible(0,false); 

Variant saveBeforeExit = new Variant(Variant.Type.VT_BOOL); 
saveBeforeExit.set(1); 

_Workbook wb = app.workbooks().open(
    "C:/dev/test.xlsx", 
    MISSING, //0 
    MISSING, //false 
    MISSING, //5 
    MISSING, //"" 
    MISSING, //"" 
    MISSING, //true 
    MISSING, //true 
    MISSING, //obj 
    MISSING, //false 
    MISSING, //false 
    MISSING, //obj 
    MISSING, 
    MISSING, 
    MISSING, 
0); 
app.calculate(0); 
wb.close(saveBeforeExit, MISSING,MISSING, 0); 
app.quit(); 
} 

}