我用Java来复制文件,但它出现异常(系统找不到指定的文件).
代码是
public static void copyFile(String sourceFile, String destFile){
try {
InputStream in = new FileInputStream(sourceFile);
OutputStream os = new FileOutputStream(destFile);
byte[] buffer = new byte[1024];
int count;
while ((count = in.read(buffer)) > 0) {
os.write(buffer, 0, count);
}
in.close();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
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测试代码
public static void main(String[] args) {
String name = getFileName("D:/z/temp.txt");
String target = "D:/tem.txt";
copyFile(name, target);
}
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例外是 java.io.FileNotFoundException: temp.txt(the system can not find the file specified)
我猜这是权限问题.谁能想出答案谢谢!
我对jQuery提交功能有一些疑问.
这是工作环境
jQuery:1.7.2,chrome(18.0.1025.168 m).
有两个问题.
第一名:
我的代码是这样的
HTML
<form id="test" action="..." method="post">
<input type="text" />
<input type="submit">
</form>
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jQuery的
$('#test').submit(function(){
return false;
})
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问题是它在firefox和opera中工作得很好但是chrome.
2ST:
html:如上所述.
jQuery的:
$('#test').submit(function(){
if(...)
alert(something..);
return false;
})
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它不适用于firefox,opera和chrome.它总是触发form.submit为什么.
我很困惑.谁能想出来谢谢!
我有一个具有两个平台视图的应用程序,其中一个是涂鸦视图,另一个是网络视图,下面是我的代码
\n\nWidget build(BuildContext context) {\n return Scaffold(\n appBar: AppBar(\n title: Text('test'),\n ),\n body: BlocProvider<CourseDocBloc>(\n create: (context) => CourseDocBloc(),\n child: Container(\n height: double.infinity,\n child: Stack(\n children: <Widget>[\n Listener(\n child: WebView(\n initialUrl: 'https://google.com',\n javascriptMode: JavascriptMode.unrestricted,\n onPageStarted: (url) {\n print('start load');\n },\n onPageFinished: (url) {\n print('load finished');\n },\n ),\n onPointerDown: (e) => {print('web down')},\n onPointerUp: (e) => {print('web up')},\n ),\n UiKitView(\n viewType: 'GLView',\n hitTestBehavior: PlatformViewHitTestBehavior.transparent, \n onPlatformViewCreated: (_) => created(),\n )\n ],\n ),\n ),\n ),\n );\n }\nRun Code Online (Sandbox Code Playgroud)\n\n当我设置UiKitView hitTestBehavior: PlatformViewHitTestBehavior.transparent …