Question

在无法解析kml到我的GE时，我的代码有什么问题？

我坚持了两个星期并试图做其他许多方式，

欢迎任何帮助，

拉斐尔·耶稣

google_earth.jsp

var ge;  

google.load("earth", "1");  

function init() {  
    google.earth.createInstance('map3d', initCB, failureCB);  
    window.scroll(0, 10000);  
}  

function initCB(instance) {  
    ge = instance;  
    ge.getWindow().setVisibility(true);  

    // add a navigation control  
    ge.getNavigationControl().setVisibility(ge.VISIBILITY_AUTO);  

    // add some layers  
    ge.getLayerRoot().enableLayerById(ge.LAYER_BORDERS, true);  
    ge.getLayerRoot().enableLayerById(ge.LAYER_ROADS, true);  

    // directs the exact location of the placemark  
    var lookAt = ge.getView().copyAsLookAt(ge.ALTITUDE_RELATIVE_TO_GROUND);  
    lookAt.setLatitude(-15.26108113514467);  
    lookAt.setLongitude(-57.77290131815782);  
    lookAt.setRange(8007066.726300671);  

    ge.getView().setAbstractView(lookAt);  
    ge.getLayerRoot().enableLayerById(ge.LAYER_TERRAIN, false);  

    var kmlString = showPics();  
    // I put a alert in here and show in a window the value "undefined"  
    var kmlObject = ge.parseKml( kmlString );  
    ge.getFeatures().appendChild(kmlObject);

}

// dwr function that brings the kml with his values  
            // for now it is in hard coded, just for tests!!  
    function showPics() {  
        PainelEarthAjax.geraFotosObra({  
            callback : function(kmlString) {  
                            // I put a alert function in here, and it has openned a window  
                            // with the entire kmlString brought from the java method geraFotosObra().  
                    return kmlString;  
            }  
        });  
    }  

function failureCB(errorCode) {  

}    
google.setOnLoadCallback(init);

geraFotosObra.java

public String geraFotosObra () throws Exception {  
    try {  
        return new KMLGenerator().getKMLFromObra();  
    } catch (Exception e) {  
        log.error(e.getLocalizedMessage(), e);  
        return null;  
    }  
}

KMLGenerator.java

public static String getKMLFromObra () {  
    StringBuffer sb = new StringBuffer();  
    sb.append("<?xml version='1.0' encoding='UTF-8'?>");  
    sb.append("<kml xmlns='http://www.opengis.net/kml/2.2' ");  

    sb.append("<Document>");  
    sb.append("<name>ConstruMobil</name>");  

    sb.append("<Style id='defaultStyles'>");  
    sb.append("<IconStyle>");  
    sb.append("<Icon>");  
    sb.append("<href>" + "http://maps.google.com/mapfiles/kml/pal4/icon38.png" + "</href>");  
    sb.append("</Icon>");  
    sb.append("</IconStyle>");  
    sb.append("</Style>");  
    sb.append("</Style>");  

    sb.append("<Placemark>");  
    sb.append("<name>" + "Some name" + "</name>");  
    sb.append("<styleUrl>" + "#defaultStyles"+ "</styleUrl>");  
    sb.append("<altitudeMode>" + "relativeToGround" + "</altitudeMode>");  

    sb.append("<Location>");  
    sb.append("<longitude>" + -122.3599987260313 + "</longitude>");  
    sb.append("<latitude>" + 47.62949781133496 + "</latitude>");  
    sb.append("<altitude>"+ 15.49615401024533 + "</altitude>");  
    sb.append("</Location>");  

    sb.append("<Link>");  
    sb.append("<href>" + "http://localhost:8080/myCompany/lib/img/dubai.jpg" + "</href>");  
    sb.append("</Link>");  
    sb.append("</Model>");  
    sb.append("</Placemark>");  

    sb.append("</Document>");  
    sb.append("</kml>");  

    return sb.toString();  
}

Answer 1

getKMLFromObra()函数不返回有效的XML：

开场>代码中缺少右括号<kml ...>：

sb.append("<kml xmlns='http://www.opengis.net/kml/2.2' ");

应该是

sb.append("<kml xmlns='http://www.opengis.net/kml/2.2'>");

为了避免在生成的XML中出现这样的错误，您应该考虑使用专门的java类而不是字符串连接，这里有一些使用DOM或SAX生成XML的例子：http://www.javazoom.net/services/newsletter/xmlgeneration.html < / p>

Answer 2

showPics()不会返回结果。在callback函数中返回结果。试试这个：

function showPics(ge) {  
    PainelEarthAjax.geraFotosObra({  
        callback : function(kmlString) {  
            var kmlObject = ge.parseKml(kmlString);  
            ge.getFeatures().appendChild(kmlObject);  
        }  
    });  
}

然后这样打电话：

ge.getView().setAbstractView(lookAt);  
ge.getLayerRoot().enableLayerById(ge.LAYER_TERRAIN, false);  

showPics(ge);

Answer 3

您有一个额外的</Style>关闭代码和一个浮动</Model>关闭代码，没有实际的Model元素。

您可以使用XML验证程序检查输出，例如Oxygen，甚至只使用TextMate中的XML包。

Answer 4

我收到消息“kml未定义！”

我认为这是jsp上的一个解析问题，我已经为测试改变了我的getKMLFromObra（），我插入下面的代码：

PS：我在kml interactive上测试了这个kml，它在那里工作，

getKMLFromObra（）

StringBuffer sb = new StringBuffer();
    sb.append("<?xml version='1.0' encoding='UTF-8'?>");
    sb.append("<kml xmlns='http://www.opengis.net/kml/2.2' >");
    sb.append("<Placemark>");
    sb.append("<name>Simple placemark</name>");
    sb.append("<description>testing fucking kml</description>");
    sb.append("<Point>");
    sb.append("<coordinates>-122.0822035425683,37.42228990140251,0</coordinates>");
    sb.append("</Point>");
    sb.append("</Placemark>");
    sb.append("</kml>");
    return sb.toString();

我的google_earth.jsp如下：

var ge;

google.load("earth", "1");

function init() {
    google.earth.createInstance('map3d', initCB, failureCB);
    window.scroll(0, 10000);

}

function initCB(instance) {
    ge = instance;
    ge.getWindow().setVisibility(true);

    // add a navigation control
    ge.getNavigationControl().setVisibility(ge.VISIBILITY_AUTO);

    // add some layers
    ge.getLayerRoot().enableLayerById(ge.LAYER_BORDERS, true);
    ge.getLayerRoot().enableLayerById(ge.LAYER_ROADS, true);
    ge.getLayerRoot().enableLayerById(ge.LAYER_TERRAIN, false);

    showPics(ge);
}

function showPics(ge) {
    PainelEarthAjax.geraFotosObra({
        callback : function(kmlString) {
            var kmlObject = ge.parseKml(kmlString);
            ge.getFeatures().appendChild(kmlObject);
        }
    });
    return null;
}

function failureCB(errorCode) {

}
google.setOnLoadCallback(init);

我将代码解析为Google地球的kml有什么问题？

4 个答案: