第一种：webst04 瓦片缺失
http://webst04.is.autonavi.com/appmaptile?style=6&x=105&y=53&z=7
http://webst04.is.autonavi.com/appmaptile?style=6&x=106&y=52&z=7
http://webst04.is.autonavi.com/appmaptile?style=6&x=106&y=55&z=7
http://webst04.is.autonavi.com/appmaptile?style=6&x=214&y=111&z=8
http://webst04.is.autonavi.com/appmaptile?style=6&x=406&y=221&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=407&y=221&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=408&y=210&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=409&y=213&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=406&y=216&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=410&y=210&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=413&y=212&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=414&y=213&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=414&y=212&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=415&y=209&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=415&y=210&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=416&y=210&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=417&y=220&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=418&y=211&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=419&y=218&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=419&y=220&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=420&y=221&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=424&y=216&z=9
http://webst04.is.autonavi.com/appmaptile?style=6&x=425&y=213&z=9
第二种：openStreet 部分瓦片有水印
http://c.tile.opencyclemap.org/cycle/7/106/52.png
第三种：谷歌 多次访问后禁止下载
Google
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java.io.IOException: Server returned HTTP response code: 403 for URL: http://mt2.google.cn/vt/lyrs=s@167000000&hl=zh-CN&gl=cn&x=1623&y=860&z=11
at java.base/jdk.internal.reflect.GeneratedConstructorAccessor5.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:488)
at java.base/sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1963)
at java.base/sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1958)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1957)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1525)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1509)
at MyMapStore.MapStoreApplication.lambda$load$0(MapStoreApplication.java:119)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:844)
第四种：百度 部分瓦片显示此区域无卫星图：
http://shangetu1.map.bdimg.com/it/u=x=1707;y=883;z=11;v=009;type=sate&fm=46&udt=20130506