文件保存、html标签file自定义test和button(笔记)
获取一个文件保存到本地的另一个目录，代码如下：
public static void main(String[] args) {
String photoUrl ="file:///f:/xx.wav";
String filePath = "E:/voc//Content/";
String fileName=filePath+"tt.wav";
try {
URL url = new URL(photoUrl);
FileURLConnection connection = (FileURLConnection) url.openConnection();
DataInputStream in = new DataInputStream(connection.getInputStream());
DataOutputStream out = new DataOutputStream(new FileOutputStream(fileName));
byte[] buffer = new byte[4096];
int count = 0;
while ((count = in.read(buffer)) > 0) {
out.write(buffer, 0, count);
}
out.close();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
html的file标签，自定义button按钮和text文本，这样就可以给text赋值和设置button的样式，代码如下：
<input type="file" id="upVocFile" name="upVocFile" style="display:none;"/> <input type="text" name="file" id="file" disabled="disabled" size="50" /> <input type="button" id="uploadBtn" name="uploadBtn" onClick="upVocFile.disabled=false;upVocFile.click();file.value=upVocFile.value;upVocFile.disabled=false;" value="浏览..." />
点击type="file"文件“浏览”按钮后，触发事件的写法如下：
<html >
<head>
</head>
<script type="text/javascript">
function test(){
alert("ccc")
}
</script>
<body>
<input type="file" id="upVocFile" name="upVocFile"onchange="subf.click();"/>
<input type="button" value="上传" id="subf" style="display:none" onclick="test()">
</body>
</html>
<html >
<head>
</head>
<script type="text/javascript">
function setTelNoS(){
alert("ccc")
}
</script>
<body>
<input type="file" id="telNoFile" name="telNoFile" size="45" onchange="javascript :setTelNoS();"/></body>
</html>
_fileObj.outerHTML =_fileObj.outerHTML 能清空input中file控件的值