从您的所有问题中,我假设您的问题背后的故事是这样的:
您的老板 D. Vader 先生要求您为他的 Java 应用程序开发构建系统。“好吧”,你说,“让我们使用 Eclipse 和/或 Ant。” “不”,Vader 先生说,“我们将拥有一个带有 .BAT 和一键式 GUI 的现代 BS”。
所以你建立了一个实验项目:
tree /a /f .
E:\TRIALS\SOTRIALS\ANSWERS\19944721
|
+---vbs
| | javacompile.hta
| | javacompile.vbs
|
\---java
+---good
| Good.java
|
\---bad
Bad.java
从最小的 Good.java 开始:
class Good {
public static void main(String[] args) {
System.out.println("use Eclipse!");
}
}
您已验证:
javac Good.java
- no news are good news --
echo %ERRORLEVEL%
0 <-- javac may set ERRORLEVEL
java Good
use Eclipse! <-- it works
坏的程序相同:
class Bad {
public static void main(String[] args) {
System.out.println("D. Vader says: 'Use .bat and one button GUI!'.");
}
javac Bad.java
Bad.java:4: reached end of file while parsing
}
^ <-- javac finds the missing }
1 error
echo %ERRORLEVEL%
1 <-- javac really sets ERRORLEVEL
然后你编写了最小的 GUI:javacompile.hta
<html>
<head>
<Title>JavaCompile</Title>
<hta:application id="javacompile" scroll = "no">
<script type="text/vbscript" src="javacompile.vbs"></script>
</head>
<body>
<form>
<input type="button" id="bttCheckBasics" value="Check Basics"/>
<form>
</body>
</html>
和'代码背后' javacompile.vbs
Option Explicit
Dim goFS : Set goFS = CreateObject("Scripting.FileSystemObject")
' document.location: "file:///E:/trials/SoTrials/answers/19944721/vbs/javacompile.hta"
Dim gsVbsF : gsVbsF = Replace(goFS.GetParentFolderName(Mid(document.location, 9)), "/", "\")
Dim gsJavaF : gsJavaF = goFS.GetAbsolutePathName(goFS.BuildPath(gsVbsF, "..\java"))
Dim gsGoodF : gsGoodF = goFS.BuildPath(gsJavaF, "good")
Dim gsBadF : gsBadF = goFS.BuildPath(gsJavaF, "bad")
Sub bttCheckBasics_onclick()
MsgBox "Sub bttCheckBasics_onclick() was called."
MsgBox Join(Array("Known Folders:", gsVbsF, gsJavaF, gsGoodF, gsBadF), vbCrLf)
End Sub
并验证 GUI 知道什么在哪里(并且自动绑定有效)。
(Copy from MessageBox)
Known Folders:
E:\trials\SoTrials\answers\19944721\vbs
E:\trials\SoTrials\answers\19944721\java
E:\trials\SoTrials\answers\19944721\java\good
E:\trials\SoTrials\answers\19944721\java\bad
---------------------------
OK
---------------------------
为了让球滚动,您向 .hta 添加了一个按钮
<br/>
<input type="button" id="bttKiss" value="Keep It Simple, Stupid"/>
和 vbs 的一些代码:
Sub bttKiss_onclick()
MsgBox "Sub bttKiss_onclick() was called."
KissCompile gsGoodF, "Good.java", "bgood.bat"
KissCompile gsBadF, "Bad.java", "bbat.bat"
End Sub
Sub KissCompile( sF, sJava, sBat)
goWSH.CurrentDirectory = sF
Dim sCmd : sCmd = Join(Array("javac", sJava))
Dim oExec : Set oExec = goWSH.Exec(sCmd)
Do Until cnWshFinished = oExec.Status : Loop
MsgBox Join(Array(qq(sCmd), "(javac) ExitCode:", oExec.ExitCode))
If 0 <> oExec.ExitCode Then MsgBox oExec.StdErr.ReadAll(), vbAbortRetryIgnore, "You messed it up, Mr. Vader!"
End Sub
Function qq(s)
qq = """" & s & """"
End Function
现在 GUI 显示两个 MessageBoxes 的坏情况:
---------------------------
"javac Bad.java" (javac) ExitCode: 1
---------------------------
OK
---------------------------
---------------------------
You messed it up, Mr. Vader!
---------------------------
Bad.java:4: reached end of file while parsing
}
^
1 error
---------------------------
维德先生没有被逗乐:到处都是黑色的窗户,而且没有一个 .BAT!你巧妙的设置技巧goWSH.CurrentDirectory
根本没有给他留下深刻印象。
所以你写了 bgood.bat:
@echo off
javac Good.java
IF ERRORLEVEL 1 GOTO :bingo
echo SUCCESS
GOTO :end
:bingo
echo FAILURE
:end
和相应的 bbad.bat。一些测试:
bbad
Bad.java:4: reached end of file while parsing
}
^
1 error
FAILURE
JAVA E:\trials\SoTrials\answers\19944721\java\bad
echo %ERRORLEVEL%
1
现在故事变成了科幻小说。您将按照我的建议使用稍微修改的BTicks 函数,以便更好地处理目录并减去删除日志文件的错误。所以 util.vbs 看起来像
Option Explicit
Const cnWshRunning = 0 ' The job is still running.
Const cnWshFinished = 1 ' The job has completed.
Const SW_SHOWMINNOACTIVE = 7
Const ForReading = 1
Function qq(s)
qq = """" & s & """"
End Function
' BTicks - execute sCmd via WSH.Run
' aRet( 0 ) : goWSH.Run() result
' aRet( 1 ) : StdErr / error message
' aRet( 2 ) : StdOut
' aRet( 3 ) : command to run
Function BTicks(sExecF, sLogF, sCmd )
goWSH.CurrentDirectory = sExecF
Dim aRet : aRet = Array(-1, "", "", "")
Dim sFSpec1 : sFSpec1 = goFS.BuildPath(sLogF, goFS.GetTempName() )
Dim sFSpec2 : sFSpec2 = goFS.BuildPath(sLogF, goFS.GetTempName() )
aRet(3) = Join(Array( _
qq("%comspec%") _
, "/c" _
, qq(Join(Array( _
sCmd _
, "1>" & qq(sFSpec1) _
, "2>" & qq(sFSpec2) _
)))))
Dim aErr
On Error Resume Next
aRet(0) = goWSH.Run(aRet( 3 ), SW_SHOWMINNOACTIVE, True)
aErr = Array(Err.Number, Err.Description, Err.Source)
On Error GoTo 0
If 0 <> aErr(0) Then
aRet(0) = aErr(0)
aRet(1) = Join(Array(aErr(1), aErr(2), "(BTicks)"), vbCrLf)
BTicks = aRet
Exit Function
End If
Dim nIdx : nIdx = 1
Dim sFSpec
For Each sFSpec In Array(sFSpec2, sFSpec1)
If goFS.FileExists(sFSpec) Then
Dim oFile : Set oFile = goFS.GetFile(sFSpec)
If 0 < oFile.Size Then
aRet(nIdx) = oFile.OpenAsTextStream(ForReading).ReadAll()
End If
oFile.Delete
End If
nIdx = nIdx + 1
Next
BTicks = aRet
End Function
由于必须包含此文件并且不再需要“旧”按钮,因此 javacompile.hta 更改为
<html>
<head>
<Title>JavaCompile</Title>
<hta:application id="javacompile" scroll = "no">
<script type="text/vbscript" src="javacompile.vbs"></script>
<script type="text/vbscript" src="util.vbs"></script>
</head>
<body>
<form>
<input type="button" id="bttBTicks" value="Use BTicks, Stupid"/>
<form>
</body>
</html>
并且 javacompile.vbs 也变得更短:
Option Explicit
Dim goFS : Set goFS = CreateObject("Scripting.FileSystemObject")
' document.location: "file:///E:/trials/SoTrials/answers/19944721/vbs/javacompile.hta"
Dim gsVbsF : gsVbsF = Replace(goFS.GetParentFolderName(Mid(document.location, 9)), "/", "\")
Dim gsJavaF : gsJavaF = goFS.GetAbsolutePathName(goFS.BuildPath(gsVbsF, "..\java"))
Dim gsGoodF : gsGoodF = goFS.BuildPath(gsJavaF, "good")
Dim gsBadF : gsBadF = goFS.BuildPath(gsJavaF, "bad")
Dim goWSH : Set goWSH = CreateObject( "WScript.Shell" )
Sub bttBTicks_onclick()
MsgBox "Sub bttUseBTicks_onclick() was called."
Dim aRet
aRet = BTicksCompile(gsGoodF, "javac Good.java")
aRet = BTicksCompile(gsGoodF, "bgood.bat")
aRet = BTicksCompile(gsBadF , "javac Bad.java")
aRet = BTicksCompile(gsBadF , "bbad.bat")
End Sub
Function BTicksCompile(sF, sCmd)
BTicksCompile = BTicks(sF, gsVbsF, sCmd)
MsgBox Join(BTicksCompile, vbCrLf & "--------" & vbCrLf)
End Function
现在不再有黑框,最后一个显示(对于 bbad.bat)显示神奇的单词 FAILURE。
---------------------------
0
--------
Bad.java:4: reached end of file while parsing
}
^
1 error
--------
FAILURE
--------
"%comspec%" /c "bbad.bat 1>"E:\trials\SoTrials\answers\19944721\vbs\rad6CE21.tmp" 2>"E:\trials\SoTrials\answers\19944721\vbs\radC7CE6.tmp""
---------------------------
OK
---------------------------