2013-02-05 38 views
1

嘿大家我一直在一个项目拍照并使用phonegap/jQuery/html5将它们存储在数据库中。数据库条目需要存储一些地理位置信息和相机拍摄的图像的BLOB。这是目前我正在使用的方法来试图做到这一点,而不是为我工作。 BLOB总是打破我的插入语句。如果我将smallImage设置为“1”而不是图像数据,则它工作正常。有没有更好的方法来插入这个blob?当我看着日志时,它看起来像是小图像被切断了。Phonegap将照片和插入图像(BLOB)到数据库SQLite

var cameraLat; 
var cameraLong; 
var cameraTimestamp; 
var destinationType; 
var cameraLocationID; 

function onGeoSuccess(position) { 
    cameraLat = position.coords.latitude; 
    console.log(cameraLat); 
    cameraLong = position.coords.longitude; 
    console.log(cameraLong); 
    cameraTimestamp = position.timestamp; 
    console.log(cameraTimestamp); 
} 

function geoFail(position) { 
    alert('code: ' + error.code + '\n' + 
      'message: ' + error.message + '\n'); 
} 

function onPhotoDataSuccess(imageData) {     
    // Get image handle 
    navigator.geolocation.getCurrentPosition(onGeoSuccess, geoFail); 
    var smallImage = imageData; 
    var Latitude = cameraLat; 
    var longitude = cameraLong; 
    var timestamp = cameraTimestamp; 
    var LID = cameraLocationID; 
    console.log(Latitude); //working 
    console.log(longitude); //working 
    console.log(timestamp); //working 
    console.log(smallImage); // This cuts out and breaks my insert. 
    var db = window.openDatabase("MobilePhotos", "1.0", "MobilePhotosData", 1000000); 
    db.transaction(function (tx) {tx.executeSql('INSERT INTO Photos(PhotoID, PictureFile, Longitude, Latitude, Timestamp) VALUES('+ timestamp+LID+' ,' + smallImage + '", ' + longitude +', '+ Latitude +', "'+ timestamp +'")')}) 
} 


function take_pic(LocationID) { 
    cameraLocationID=LocationID; 
    navigator.camera.getPicture(onPhotoDataSuccess, function(ex) {alert("Camera Error!");}, { quality : 50, destinationType: Camera.DestinationType.DATA_URL }); 
} 

这里是我的错误,当我尝试输入BLOB:

02-05 16:10:19.702: W/System.err(12028): 
android.database.sqlite.SQLiteException: 
no such column: undefined (code 1): , while compiling: 
INSERT INTO OrderPhotos(PhotoID, PictureFile, Longitude, Latitude, Timestamp) 
VALUES(1904010821 , "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDABsS..(3825 characters) 

但我没有看到其余字段。有什么东西可以打破双引号?或者在这里发生了其他事情?

如果我把一个 “1” 在smallImage我的输出能正常工作,我得到:

INSERT INTO OrderPhotos(PhotoID, PictureFile, Longitude, Latitude, Timestamp) 
VALUES(1904010821 , "1", 39.10, -84.50, 190401082) 

回答

3

你尝试使用运营商?

db.transaction(function(tx) { 
    tx.executeSql("INSERT INTO OrderPhotos(PhotoID, PictureFile, Longitude, 
        Latitude, Timestamp) VALUES 
       (1904010821 , ? , 39.10, -84.50, 190401082)", 
    [PictureFile], 
    function(tx, res) { 
     .... 
    }); 
}); 

运营商?,比使用字符串快级联。

你的榜样:

db.transaction(function (tx) 
{tx.executeSql('INSERT INTO Photos(PhotoID, PictureFile, Longitude, Latitude, Timestamp) 
VALUES(?,?,?,?,?)')},[photoid, small photo, longitud, latitude, timestamp])} 

每个?对应在同一顺序每个变种。