10th of September 2012
最近公司在做一个移动版的产品,是基于PhoneGap2.0和JQM1.1.1的开发的。今天在整一个用手机拍照然后上传图片的功能,整整做了一天,没有一天成果,只能实现图片拍照并存储在手机里而已,一直没能实现图片上传的功能。也尝试了从网上搜到的一大堆的例子,均无果,最后近乎崩溃了。
在下午5点多的时候,和公司的一位技术大牛一起探讨,通过各种调试及尝试之后,终于完美地实现了基于PhoneGap+JQM实现手机拍照并且上传图片的功能,现在在这里做好总结备份,并分享给广大需要的同仁们!需要的文件在一起打包了,或者可以自己上网找。
首先是拍照功能:
具体参数请移步到PhoneGap的官网API
http://docs.phonegap.com/en/2.0.0/cordova_camera_camera.md.html#Camera
接着是图片(文件)上传功能:
具体参数请移步到PhoneGap的官网API,主要是FileTransfer这个
http://docs.phonegap.com/en/2.0.0/cordova_file_file.md.html#FileTransfer
废话不多说,贴上源码,由于是公司项目,只能贴上改动过的源码。但具体思路还是能够表达的。
网页文件的部分源码:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="jslib/jqm1.1/jquery.mobile-1.1.1.css" />
<script src="jslib/phoneGap/cordova-2.0.0.js"></script>
<script src="jslib/jqm1.1/jquery-1.7.1.js"></script>
<script src="jslib/jqm1.1/jquery.mobile-1.1.1.js"></script>
<script src="jslib/phoneGap/phonegap2.0.js"></script>
<script type="text/javascript" src="js/main.js"></script><link rel="stylesheet" href="third/mobiscroll-2.0.2/css/mobiscroll-2.0.2.custom.min.css"></link>
<script type="text/javascript" src="third/mobiscroll-2.0.2/js/mobiscroll-2.0.2.custom.min.js"></script>
<script type="text/javascript">
$(document).bind("mobileinit", function() {
//$.mobile.autoInitialize = false; //删除这行配置参数就会出现渲染错误
$.support.cors = true;
$.mobile.allowCrossDomainPages = true;
});
var pictureSource; // picture source
var destinationType; // sets the format of returned value
// Wait for Cordova to connect with the device
//
document.addEventListener("deviceready", onDeviceReady, false);
// Cordova is ready to be used!
//
function onDeviceReady() {
pictureSource = navigator.camera.PictureSourceType;
destinationType = navigator.camera.DestinationType;
}
// Called when a photo is successfully retrieved
//
function onPhotoDataSuccess(imageData) {
// Uncomment to view the base64 encoded image data
// console.log(imageData);
// Get image handle
//
var smallImage = document.getElementById('smallImage');
// Unhide image elements
//
smallImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
//smallImage.src = "data:image/jpeg;base64," + imageData;
smallImage.src = imageData;
}
// Called when a photo is successfully retrieved
//
function onPhotoURISuccess(imageURI) {
// Uncomment to view the image file URI
// console.log(imageURI);
// Get image handle
//
var largeImage = document.getElementById('largeImage');
// Unhide image elements
//
largeImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
//largeImage.src = "data:image/jpeg;base64," + imageData;
largeImage.src = imageURI;
}
// A button will call this function
//
function capturePhoto() {
// Take picture using device camera and retrieve image as base64-encoded string
navigator.camera.getPicture(uploadPhoto, onFail, {
quality : 50,
destinationType : navigator.camera.DestinationType.FILE_URI,//这里要用FILE_URI,才会返回文件的URI地址
//destinationType : Camera.DestinationType.DATA_URL,
sourceType : Camera.PictureSourceType.CAMERA,
allowEdit : true,
encodingType : Camera.EncodingType.JPEG,
popoverOptions : CameraPopoverOptions,
saveToPhotoAlbum : true
});
}
// A button will call this function
//
function capturePhotoEdit() {
// Take picture using device camera, allow edit, and retrieve image as base64-encoded string
navigator.camera.getPicture(uploadPhoto, onFail, {
quality : 50,
allowEdit : true,
destinationType : destinationType.DATA_URL,
saveToPhotoAlbum : true
});
}
// A button will call this function
//
function getPhoto(source) {
// Retrieve image file location from specified source
navigator.camera.getPicture(uploadPhoto, onFail, {
quality : 50,
destinationType : destinationType.FILE_URI,//这里要用FILE_URI,才会返回文件的URI地址
sourceType : source
});
}
// Called if something bad happens.
//
function onFail(message) {
alert('Failed because: ' + message);
}
function uploadPhoto(imageURI) {
var options = new FileUploadOptions();
options.fileKey = "fileAddPic";//用于设置参数,对应form表单里控件的name属性,这是关键,废了一天时间,完全是因为这里,这里的参数名字,和表单提交的form对应
options.fileName = imageURI.substr(imageURI.lastIndexOf('/') + 1);
//如果是图片格式,就用image/jpeg,其他文件格式上官网查API
options.mimeType = "image/jpeg";
options.mimeType = "multipart/form-data";//这两个参数修改了,后台就跟普通表单页面post上传一样 enctype="multipart/form-data"
//这里的uri根据自己的需求设定,是一个接收上传图片的地址
var uri = encodeURI(CONSTANT['context'] + "/user/publish/ajaxUploadPic");
//alert(imageURI);
//alert(uri);
options.chunkedMode = false;
/* var params = new Object();
params.fileAddPic = imageURI;
options.params = params; */
var ft = new FileTransfer();
ft.upload(imageURI, uri, win, fail, options);
}
function win(r) {
alert("上传成功");
var response = r.response;
//alert("response = " + response);
//这里的message是自定义的返回值,具体的根据自己的需求而定
var message = eval("(" + r.response + ")").message;
$("#_picFile").val(message);
//alert("message = " + message);
var imageURI = CONSTANT['context'] + message;
//alert("imageURI =" + imageURI);
onPhotoDataSuccess(imageURI);
onPhotoURISuccess(imageURI);
//alert("Code = " + r.responseCode);
//alert("Response = " + r.response);
//alert("Sent = " + r.bytesSent);
//以下是三个默认的返回参数
console.log("Code = " + r.responseCode);
console.log("Response = " + r.response);
console.log("Sent = " + r.bytesSent);
}
function fail(error) {
alert("An error has occurred: Code = " + error.code);
alert("upload error source " + error.source);
alert("upload error target " + error.target);
console.log("upload error source " + error.source);
console.log("upload error target " + error.target);
}
</script>
</head>
<body>
<!-- page write -->
<div data-role="page" id="write">
<div data-role="header" data-position="fixed">
<a href="#" data-icon="back" data-rel="back">返回</a>
<h1>拍照并上传图片</h1>
<a href="javascript:void(0);" data-icon="arrow-l" id="btn_nowsend">设置</a>
</div>
<!-- /header -->
<div data-role="content">
<input id="_picFile" type="hidden" value="" />
<!-- take photoes -->
<button onclick="capturePhoto();">点击拍照</button>
<br>
<button onclick="getPhoto(pictureSource.PHOTOLIBRARY);">从相册选择图片</button>
<br>
<button onclick="getPhoto(pictureSource.SAVEDPHOTOALBUM);">从相册选择图片</button>
<br> <img style="display:none;width:120px;height:120px;" id="smallImage" src="" /> <img
style="display:none;width:240px;height:240px;" id="largeImage" src="" />
</div>
<!-- /content -->
<div data-role="footer" data-position="fixed" class="ui-bar">
<a id="btn_timingsend" href="javascript:void(0);" data-role="button" data-icon="plus">底部菜单</a> <a
href="javascript:void(0);" data-role="button" data-icon="arrow-u">底部菜单</a>
</div>
<!-- /footer -->
</div>
<!-- /page write -->
</body>
</html>
后台文件的部分源码:
后台整体框架用的是Spring MVC,这里就给出调用图片上传的方法头
@RequestMapping(value = "user/publish/ajaxUploadPic", method = RequestMethod.POST)
public @ResponseBody
ModelAndView ajaxUploadPic(@RequestParam("fileAddPic") final CommonsMultipartFile fileData, final HttpServletResponse response) {
//@RequestParam("fileAddPic")这个其实就是上面的网页文件里的options.fileKey = "fileAddPic"这个参数,其实如果是用浏览器页面的表单进行图片上传,则要求表单控件的name属性为fileAddPic,具体的可以自己设定。
这里就有点疑惑了,如果是多图片或者多文件上传,参数应该怎么设置呢?难道是循环的上传,每次一个文件麽!不明白设计者的思路。不过还是可以用,经过真机测试,绝对可行。
这里就已经实现了文件流的传输了。接着具体如何将文件保存到具体位置,请各位大神自己动手了。
小弟在这里就抛砖引玉了。
}
作者:被梦想绊倒的小马
QQ:395487290
新浪微博:http://weibo.com/u/2055506953
欢迎交流沟通!
联系客服