我正在使用phonegap创建一个Android应用程序,在这个应用程序中,我想让用户从php页面(服务器端)下载文件,这就是我遇到麻烦的地方。这是我的Android项目中的html页面index.html:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Download</title>
</head>
<body>
<form id="down" name="down" action="http://172.25.10.99/test/download.php" method="GET">
<!-- 172.25.10.99 : server IP -->
<input type="text" name="filename" id="filename"/>
<input type="submit" id="id2" value="download"/>
</form>
</body>
</html>
这是php页面download.php:
<?php
try {
$file = "D:\\file\\" . $_REQUEST['filename'];
} catch (Exception $ex) {
$file = "D:\\file\\pdf2.pdf";
}
$fp = fopen($file, 'r');
$content = fread($fp, filesize($file));
fclose($fp);
header("Accept-Ranges: bytes");
header("Keep-Alive: timeout=15, max=100");
header("Content-Disposition: attachment; filename=" . basename($file));
header("Content-Type: application/octet-stream");
header("Content-Transfer-Encoding: binary");
header("Content-Description: File Transfer");
?>
问题是:当我按下应用程序中的下载按钮时(在插入正确且存在于服务器上的文件名后),我什么都没得到,而我希望看到一个下载窗口,问我在哪里保存所请求的文件,或者更好,在自动下载的下载文件夹中找到所请求的文件,我相信问题出在php页面的标题中。请问你能帮忙吗?我真的很感激..
答案 0 :(得分:2)
使用FileTransfer.download
,这是一个例子:
function downloadFile(){
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0,
function onFileSystemSuccess(fileSystem) {
fileSystem.root.getFile(
"dummy.html", {create: true, exclusive: false},
function gotFileEntry(fileEntry) {
var sPath = fileEntry.fullPath.replace("dummy.html","");
var fileTransfer = new FileTransfer();
fileEntry.remove();
fileTransfer.download(
"http://www.w3.org/2011/web-apps-ws/papers/Nitobi.pdf",
sPath + "theFile.pdf",
function(theFile) {
console.log("download complete: " + theFile.toURI());
showLink(theFile.toURI());
},
function(error) {
console.log("download error source " + error.source);
console.log("download error target " + error.target);
console.log("upload error code: " + error.code);
}
);
}, fail);
}, fail);
};
}
答案 1 :(得分:2)
这个答案接近上面的答案,但更简单,更容易理解,虽然我必须说如果没有阿米特先生的帮助我不会得到这个答案,这是我的解决方案:
<script>
function downloadFile2()
{
alert("I'm in df2");
var fileTransfer = new FileTransfer();
var uri = encodeURI("http://172.25.10.170/test/download.php?select=img.jpg");
var filePath = "/mnt/sdcard/img.jpg";
fileTransfer.download(
uri,
filePath,
function(entry) {
document.getElementById("id11").innerHTML="download complete: " + entry.fullPath;
},
function(error) {
document.getElementById("id11").innerHTML="download error source " + error.source;
document.getElementById("id11").innerHTML="download error target " + error.target;
document.getElementById("id11").innerHTML="upload error code" + error.code;
},
true,
{
}
);
};
</script>
<button id="downtbtn2" onClick="downloadFile2();" >downloadTest</button>
<br/>
<label id="id11">here should be the result</label>