恩通过这种方式可以解决这个问题, 但是我遇到个新的问题,因为我是把这个通过表单的形式上传到服务器,但会提示这个...java.io.FileNotFoundException: E:\Myeclipse\apache-tomcat-6.0.35\webapps\Login\WebRoot\photo\my (拒绝访问。) at java.io.FileOutputStream.open(Native Method) at java.io.FileOutputStream.<init>(FileOutputStream.java:179) at java.io.FileOutputStream.<init>(FileOutputStream.java:131) at servlet.ModifyHeadServlet.doPost(ModifyHeadServlet.java:62) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at filter.CheckUser.doFilter(CheckUser.java:44) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at filter.EncodingChange.doFilter(EncodingChange.java:28) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619)
<img id="uploadPreview" style="width: 100px; height: 100px;" />
<input id="uploadImage" type="file" name="myPhoto" onchange="PreviewImage();" />
<script type="text/javascript"> function PreviewImage() {
oFReader = new FileReader();
oFReader.readAsDataURL(document.getElementById("uploadImage").files[0]); oFReader.onload = function (oFREvent) {
document.getElementById("uploadPreview").src = oFREvent.target.result;
};
};</script>
//使用IE条件注释来判断是否IE6,通过判断userAgent不一定准确
if (document.all) document.write('<!--[if lte IE 6]><script type="text/javascript">window.ie6= true<\/script><![endif]-->');
// var ie6 = /msie 6/i.test(navigator.userAgent);//不推荐,有些系统的ie6 userAgent会是IE7或者IE8
function change(file,pic) {
if(window.FileReader){//chrome,firefox7+,opera,IE10,IE9,IE9也可以用滤镜来实现
oFReader = new FileReader();
oFReader.readAsDataURL(file.files[0]);
oFReader.onload = function (oFREvent) {pic.src = oFREvent.target.result;};
}
else if (document.all) {//IE8-
file.select();
var reallocalpath = document.selection.createRange().text//IE下获取实际的本地文件路径
if (window.ie6) pic.src = reallocalpath; //IE6浏览器设置img的src为本地路径可以直接显示图片
else { //非IE6版本的IE由于安全问题直接设置img的src无法显示本地图片,但是可以通过滤镜来实现,IE10浏览器不支持滤镜,需要用FileReader来实现,所以注意判断FileReader先
pic.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod='image',src=\"" + reallocalpath + "\")";
pic.src = 'data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==';//设置img的src为base64编码的透明图片,要不会显示红xx
}
}
else if (file.files) {//firefox6-
if (file.files.item(0)) {
url = file.files.item(0).getAsDataURL();
pic.src = url;
}
}
}
function display(x) {
document.getElementById('p').style.display = x;
}
</script>
<a href="javascript:;" onclick="display('block')">修改头像</a>
<center>
<div class="lk" id="p" style="display:none">
<div id="d">
<div class="c">
<img id="img" width="100" height="100" />
</div>
<div class="b">
<a href="#" onclick="display('none')">上传</a>
<a href="#" style="position:relative"><input onchange="change(this, document.getElementById('img'))" size="0" style="width:30px;cursor:pointer;opacity:0;filter:alpha(opacity=0);position:absolute;left:0px;top:0px;" id="file" type="file" />预览</a>
</div>
</div>
</div>
</center>
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
at servlet.ModifyHeadServlet.doPost(ModifyHeadServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at filter.CheckUser.doFilter(CheckUser.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at filter.EncodingChange.doFilter(EncodingChange.java:28)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
E:\Myeclipse\apache-tomcat-6.0.35\webapps\Login\WebRoot\photo\my文件夹要不不存在,要么无权访问貌似你要把文件存在这里,但是需要这个文件夹存在并有访问权限
文件肯定存在。 我用我那个代码通过表单可以上传的,通过 fileupload类 来进行文件上传的
有问题就是没注意看你贴出来的file控件没有name属性,只有id,这样文件是不会上传的,增加name属性。而且你的file控件要放到表单中<a href="#" style="position:relative"><input name="file" onchange="change(this, document.getElementById('img'))" size="0" style="width:30px;cursor:pointer;opacity:0;filter:alpha(opacity=0);position:absolute;left:0px;top:0px;" id="file" type="file" />预览</a>
有问题就是没注意看你贴出来的file控件没有name属性,只有id,这样文件是不会上传的,增加name属性。而且你的file控件要放到表单中<a href="#" style="position:relative"><input name="file" onchange="change(this, document.getElementById('img'))" size="0" style="width:30px;cursor:pointer;opacity:0;filter:alpha(opacity=0);position:absolute;left:0px;top:0px;" id="file" type="file" />预览</a>恩。
那个代码只是单独了为显示那个效果, 我系统里面有name 属性的
有问题就是没注意看你贴出来的file控件没有name属性,只有id,这样文件是不会上传的,增加name属性。而且你的file控件要放到表单中<a href="#" style="position:relative"><input name="file" onchange="change(this, document.getElementById('img'))" size="0" style="width:30px;cursor:pointer;opacity:0;filter:alpha(opacity=0);position:absolute;left:0px;top:0px;" id="file" type="file" />预览</a>
能把那个预览弄成按钮吗?? 好像直接修改不行
<head>
<title>Ajax File Uploader Plugin For Jquery</title>
<link href="ajaxfileupload.css" type="text/css" rel="stylesheet">
<meta http-equiv="content-type" content="text/html;charset=gb2312" />
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="ajaxfileupload.js"></script>
</head>
<body>
<div id="wrapper">
<div id="content">
<img id="loading" src="loading.gif" style="display:none;">
<script>
//使用IE条件注释来判断是否IE6,通过判断userAgent不一定准确
if (document.all) document.write('<!--[if lte IE 6]><script type="text/javascript">window.ie6= true<\/script><![endif]-->');
// var ie6 = /msie 6/i.test(navigator.userAgent);//不推荐,有些系统的ie6 userAgent会是IE7或者IE8
function change(file, pic) {
if (window.FileReader) {//chrome,firefox7+,opera,IE10,IE9,IE9也可以用滤镜来实现
oFReader = new FileReader();
oFReader.readAsDataURL(file.files[0]);
oFReader.onload = function (oFREvent) { pic.src = oFREvent.target.result; };
}
else if (document.all) {//IE8-
file.select();
var reallocalpath = document.selection.createRange().text//IE下获取实际的本地文件路径
if (window.ie6) pic.src = reallocalpath; //IE6浏览器设置img的src为本地路径可以直接显示图片
else { //非IE6版本的IE由于安全问题直接设置img的src无法显示本地图片,但是可以通过滤镜来实现,IE10浏览器不支持滤镜,需要用FileReader来实现,所以注意判断FileReader先
pic.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod='image',src=\"" + reallocalpath + "\")";
pic.src = 'data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw=='; //设置img的src为base64编码的透明图片,要不会显示红xx
}
}
else if (file.files) {//firefox6-
if (file.files.item(0)) {
url = file.files.item(0).getAsDataURL();
pic.src = url;
}
}
}
function display(x) {
document.getElementById('p').style.display = x;
} function ajaxFileUpload() {
$("#loading").ajaxStart(function () { $(this).show(); }).ajaxComplete(function () { $(this).hide(); });
alert('ready')
$.ajaxFileUpload({
url: 'save.ashx',
secureuri: false,
fileElementId: 'file',
dataType: 'json',
data: { name: 'logan', id: 'id' },
success: function (data, status) {
if (data.success) alert('上传成功,返回的文件名:' + data.msg); else alert('错误:' + data.msg);
},
error: function (data, status, e) {
alert(e);
}
})
alert('send')
return false; }
</script>
<a href="javascript:;" onclick="display('block')">修改头像</a>
<center>
<div class="lk" id="p" style="display:none">
<div id="d">
<div class="c">
<img id="img" width="100" height="100" />
</div>
<div class="b">
<a href="#" onclick="ajaxFileUpload()">上传</a>
<a href="#" style="position:relative"><input onchange="change(this, document.getElementById('img'))" size="0" style="width:30px;cursor:pointer;opacity:0;filter:alpha(opacity=0);position:absolute;left:0px;top:0px;" id="file" type="file" />预览</a>
</div>
</div>
</div>
</center>
</div>
</body>
</html>
上传服务器后,试了chrome、safari、ff、IE,发现在IE9里没效果,然后Input file,点第一次文件不上床,点第二次的时候才上传,用的是Jquery 的fileupload data.submmit()。 啥原因呢