GeoWebCache的安装

SmartMap 科技

GeoWebCache配置地图缓存

GIS Pathfinder

2010-01-30

详细讲解了GeoWebCache配置地图缓存的配置过程
GeoWebCache配置地图缓存

1.下载geowebcache-1.2.1-WAR.zip，解压到“D:\Program Files\Eclipse\apache-tomcat-6.0.20\webapps\geowebcache”中：

下载地址：http://geowebcache.org/trac

2.在“D:\Program Files\Eclipse\apache-tomcat-6.0.20\webapps\geowebcache\”目录下新建一子目录“Cache”，用于存放生成的缓存地图切片。

3.编辑geowebcache-servlet.xml文件（“D:\Program Files\Eclipse\apache-tomcat-6.0.20\webapps\geowebcache\WEB-INF\geowebcache-servlet.xml”）。

由于我的Tomcat所用服务的端口为：8020，所以需要将相关的服务端口改为：8020

1）将

改为：

2）将

改为：

3）修改缓存图片的路径：

将

改为：

4)完整的geowebcache-servlet.xml文件如下：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>

<bean id="gwcAppCtx" class="org.geowebcache.util.ApplicationContextProvider" />

<!-- The location of a static configuration file for GeoWebCache.

By default this lives in WEB-INF/classes/geowebcache.xml -->

<bean id="gwcXmlConfig" class="org.geowebcache.config.XMLConfiguration">

<constructor-arg ref="gwcAppCtx" />

<constructor-arg ref="gwcGridSetBroker"/>

<constructor-arg ref="gwcDefaultStorageFinder" />

<!-- Other examples: -->

<!--property name="relativePath"><value>../resources</value></property -->

<!--property name="relativePath"><value>/WEB-INF/classes</value></property-->

<!--property name="absolutePath"><value>/etc/geowebcache/conf</value></property-->

</bean>

<!-- If you like to automatically configure GWC from a WMS Getcapabilities document,

change the values below. The last constructor-arg lets you specify parameters

that are appended to every WMS request to the backed, for example:

"format_options=regionate_by:auto&amp;bgcolor=0x112233" -->

<bean id="gwcWMSConfig" class="org.geowebcache.config.GetCapabilitiesConfiguration">

<constructor-arg ref="gwcGridSetBroker"/>

<!-- The URL to the WMS GetCapabilities document -->

<constructor-arg value="http://localhost:8020/geoserver/wms?service=WMS&amp;request=GetCapabilities" />

<!-- constructor-arg value="http://dk.nunagis.gl/wms?servicename=nuk0600_wms_g5&amp;version=1.1.0&amp;service=WMS&amp;request=getcapabilities"/ -->

<!-- constructor-arg value="http://www.nasa.network.com/elev?service=WMS&amp;request=GetCapabilities" /-->

<!-- The formats to support for all layers read for the above document -->

<constructor-arg value="image/png,application/bil16,application/bil32"/>

<!-- Metatiling factors, 3x3 is usually a good compromise for vector data -->

<constructor-arg value="3x3"/>

<!-- Vendor parameters, these are appended to every request sent to the backend.

If you use MapServer you probably want to set this to "map=name" -->

<constructor-arg value=""/>

<!-- Whether to allow cached=false to specificed for certain requests -->

<constructor-arg value="false"/>

</bean>

<!-- For each configuration bean above, add them below to activate -->

<bean id="gwcTLDispatcher" class="org.geowebcache.layer.TileLayerDispatcher">

<constructor-arg ref="gwcGridSetBroker"/>

<constructor-arg>

<list>

<ref bean="gwcWMSConfig" />

<ref bean="gwcXmlConfig" />

</list>

</constructor-arg>

</bean>

<bean id="gwcDefaultStorageFinder" class="org.geowebcache.storage.DefaultStorageFinder">

<constructor-arg ref="gwcAppCtx" />

</bean>

<bean id="gwcMetaStore" class="org.geowebcache.storage.metastore.jdbc.JDBCMetaBackend" destroy-method="destroy">

<constructor-arg ref="gwcDefaultStorageFinder" />

</bean>

<!-- Static definition of where to put the metastore.

Note that the directory is AUTOMATICALLY CREATED if it does not exist. -->

<!-- bean id="gwcMetaStore" class="org.geowebcache.storage.metastore.jdbc.JDBCMetaBackend" destroy-method="destroy">

<constructor-arg value="org.h2.Driver" />

<constructor-arg value="jdbc:h2:file:/tmp/gwc_metastore/h2_metastore;TRACE_LEVEL_FILE=0" />

<constructor-arg value="username" />

<constructor-arg value="password" />

</bean -->

<bean id="gwcBlobStore" class="org.geowebcache.storage.blobstore.file.FileBlobStore" destroy-method="destroy">

<constructor-arg value="D:/Program Files/Eclipse/apache-tomcat-6.0.20/webapps/geowebcache/Cache" />

</bean>

<!-- Static definition of where to put the blobstore.

Note that the directory MUST EXIST when GWC is started. -->

<!-- bean id="gwcBlobStore" class="org.geowebcache.storage.blobstore.file.FileBlobStore" destroy-method="destroy">

<constructor-arg value="/tmp/gwc_blobstore" />

</bean -->

<bean id="gwcStorageBroker" class="org.geowebcache.storage.StorageBroker" destroy-method="destroy">

<constructor-arg ref="gwcMetaStore" />

<constructor-arg ref="gwcBlobStore" />

<property name="verifyFileSize" value="TRUE"/>

</bean>

<bean id="gwcGridSetBroker" class="org.geowebcache.grid.GridSetBroker">

<!-- Should we used EPSG:900913 instead of EPSG:3857 ? -->

<constructor-arg type="boolean" value="TRUE" />

<!--

Should the default grids be named EPSG:4326 and EPSG:90091,

or use the new names? If you say no here, you have to manually

rename the directories and entries in the H2 database.

-->

<constructor-arg type="boolean" value="TRUE" />

</bean>

<bean id="gwcRuntimeStats" class="org.geowebcache.stats.RuntimeStats" destroy-method="destroy">

<!-- The poll interval, the number of seconds until counters are aggregated -->

<constructor-arg type="int" value="3" />

<!-- The intervals (in seconds) for which aggregates are reported.

Each interval must be a multiple of the poll interval above and

listed in ascending order. For example, for a maximum interval

of 60 seconds and 3 second poll interval from above, the amount

of memory consumed is (60 / 3) * 8 = 160 bytes

-->

<constructor-arg>

<list>

<value>3</value>

<value>15</value>

<value>60</value>

</list>

</constructor-arg>

<!-- Descriptive texts for each of the intervals above -->

<constructor-arg>

<list>

<value>3 seconds</value>

<value>15 seconds</value>

<value>60 seconds</value>

</list>

</constructor-arg>

</bean>

<!-- controller for handling all incoming requests -->

<bean id="geowebcacheDispatcher" class="org.geowebcache.GeoWebCacheDispatcher" destroy-method="destroy">

<constructor-arg ref="gwcTLDispatcher"/>

<constructor-arg ref="gwcGridSetBroker"/>

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcXmlConfig"/>

<constructor-arg ref="gwcRuntimeStats"/>

<property name="defaultStorageFinder" ref="gwcDefaultStorageFinder"/>

</bean>

<!-- WMS based services -->

<bean id="gwcServiceWMS"

class="org.geowebcache.service.wms.WMSService">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcTLDispatcher"/>

<property name="proxyRequests"><value>TRUE</value></property>

</bean>

<bean id="gwcServiceGMaps"

class="org.geowebcache.service.gmaps.GMapsConverter">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcTLDispatcher"/>

<constructor-arg ref="gwcGridSetBroker"/>

</bean>

<bean id="gwcServiceMGMaps"

class="org.geowebcache.service.mgmaps.MGMapsConverter">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcTLDispatcher"/>

<constructor-arg ref="gwcGridSetBroker"/>

</bean>

<bean id="gwcServiceVE"

class="org.geowebcache.service.ve.VEConverter">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcTLDispatcher"/>

<constructor-arg ref="gwcGridSetBroker"/>

</bean>

<bean id="gwcServiceKML"

class="org.geowebcache.service.kml.KMLService">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcTLDispatcher"/>

<constructor-arg ref="gwcGridSetBroker"/>

<constructor-arg ref="gwcRuntimeStats"/>

</bean>

<bean id="gwcServiceTMS"

class="org.geowebcache.service.tms.TMSConverter">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcTLDispatcher"/>

</bean>

<bean id="gwcServiceWMTS"

class="org.geowebcache.service.wmts.WMTSService">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg ref="gwcTLDispatcher"/>

<constructor-arg ref="gwcGridSetBroker"/>

</bean>

<!-- WFS based services -->

<bean id="gwcServiceWFS"

class="org.geowebcache.service.wfs.WFSService">

<constructor-arg ref="gwcStorageBroker"/>

<constructor-arg value="http://localhost:8020/geoserver/wfs" />

<constructor-arg value="" />

<constructor-arg value="600" />

</bean>

<!-- Thread pool for seeding -->

<bean id="gwcSeederThreadPoolExec"

class="org.geowebcache.rest.seed.SeederThreadPoolExecutor">

<constructor-arg value="16"/><!-- Size of core pool -->

<constructor-arg value="32"/><!-- Maximum size of pool -->

</bean>

<!-- Restlets -->

<bean id="gwcSeedRestlet" class="org.geowebcache.rest.seed.SeedRestlet">

<property name="tileLayerDispatcher" ref="gwcTLDispatcher"/>

<property name="threadPoolExecutor" ref="gwcSeederThreadPoolExec"/>

<property name="storageBroker" ref="gwcStorageBroker"/>

</bean>

<bean id="gwcSeedFormRestlet" class="org.geowebcache.rest.seed.SeedFormRestlet">

<property name="tileLayerDispatcher" ref="gwcTLDispatcher"/>

<property name="threadPoolExecutor" ref="gwcSeederThreadPoolExec"/>

<property name="storageBroker" ref="gwcStorageBroker"/>

<property name="seedRestlet" ref="gwcSeedRestlet"/>

</bean>

<bean id="gwcReloadRestlet" class="org.geowebcache.rest.reload.ReloadRestlet">

<property name="tileLayerDispatcher" ref="gwcTLDispatcher"/>

</bean>

<bean id="gwcTileLayerRestlet" class="org.geowebcache.rest.layers.TileLayerRestlet">

<property name="XMLConfiguration" ref="gwcXmlConfig"/>

<property name="tileLayerDispatcher" ref="gwcTLDispatcher"/>

</bean>

<bean id="gwcBoundsRestlet" class="org.geowebcache.rest.bounds.BoundsRestlet">

<property name="tileLayerDispatcher" ref="gwcTLDispatcher"/>

</bean>

<bean id="gwcFilterUpdateRestlet" class="org.geowebcache.rest.filter.FilterUpdateRestlet">

<constructor-arg ref="gwcTLDispatcher"/>

</bean>

<bean id="gwcByteStreamerRestlet" class="org.geowebcache.rest.webresources.ByteStreamerRestlet" />

<!-- REST Dispatcher -->

<bean id="gwcRestDispatcher" class="org.geowebcache.rest.RESTDispatcher">

<constructor-arg type="java.util.Map">

<map>

<entry>

<key><value>/seed/{layer}.{extension}</value></key>

<ref bean="gwcSeedRestlet" />

</entry>

<entry>

<key><value>/seed/{layer}</value></key>

<ref bean="gwcSeedFormRestlet" />

</entry>

<entry>

<key><value>/reload</value></key>

<ref bean="gwcReloadRestlet" />

</entry>

<entry>

<key><value>/layers/{layer}.{extension}</value></key>

<ref bean="gwcTileLayerRestlet" />

</entry>

<entry>

<key><value>/bounds/{layer}/{srs}/{type}</value></key>

<ref bean="gwcBoundsRestlet" />

</entry>

<entry>

<key><value>/filter/{filterName}/update/{updateType}</value></key>

<ref bean="gwcFilterUpdateRestlet" />

</entry>

<entry>

<key><value>/web/{filename}</value></key>

<ref bean="gwcByteStreamerRestlet" />

</entry>

</map>

</constructor-arg>

</bean>

<bean id="gwcProxyDispatcher"

class="org.geowebcache.proxy.ProxyDispatcher"/>

<bean id="gwcUrlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">

<property name="alwaysUseFullPath" value="true"/>

<property name="mappings">

<props>

<prop key="/rest/**">gwcRestDispatcher</prop>

<prop key="/service/**">geowebcacheDispatcher</prop>

<prop key="/demo/**">geowebcacheDispatcher</prop>

<prop key="/proxy/**">gwcProxyDispatcher</prop>

<prop key="/home">geowebcacheDispatcher</prop>

</props>

</property>

</bean>

</beans>

4.编辑geowebcache.xml文件（“D:\Program Files\Eclipse\apache-tomcat-6.0.20\webapps\geowebcache\WEB-INF\classes\geowebcache.xml”）。

1) 添加gridSet

可参考：http://geowebcache.org/docs/current/concepts/gridset.html

在<gridSets></gridSets>节点添加如下的gridSet

<gridSet>

<name>EPSG:42304 Grid Set</name>

<srs><number>42304</number></srs>

<extent>

<coords>

<double>-2200000</double>

<double>-712631</double>

<double>3072800</double>

<double>3840000</double>

</coords>

</extent>

<alignTopLeft>false</alignTopLeft>

<resolutions>

<double>14062.5</double>

<double>7031.25</double>

<double>3515.625</double>

<double>1757.8125</double>

<double>878.90625</double>

<double>439.453125</double>

</resolutions>

<tileHeight>256</tileHeight>

<tileWidth>256</tileWidth>

</gridSet>

2) 添加MapServer的WMS服务

可参考：C:\Users\zhangyongxin\Desktop\OpenLayers\TileCache\geowebcache-1.2.1-DOC\geowebcache-1.2.1-docs\configuration\xml\exhaustive.html

在<layers></layers>节点添加如下的wmsLayer

<wmsLayer>

<name>gmap</name>

<mimeFormats><string>image/png</string></mimeFormats>

<!-- Grid Subset Example -->

<gridSubsets>

<gridSubset>

<gridSetName>EPSG:42304 Grid Set</gridSetName>

<extent>

<coords>

<double>-2200000</double>

<double>-712631</double>

<double>3072800</double>

<double>3840000</double>

</coords>

</extent>

</gridSubset>

</gridSubsets>

<wmsUrl>

<string>http://localhost:8040/cgi-bin/mapserv.exe?MAP=/ms4w/apps/gmap/htdocs/gmap75_wms.map&amp;</string>

</wmsUrl>

<wmsLayers>bathymetry,land_fn</wmsLayers>

<transparent>false</transparent>

<bgColor>0x0066FF</bgColor>

<expireCacheList>

<expirationRule minZoom="0" expiration="60" />

</expireCacheList>

<expireClientsList>

<expirationRule minZoom="0" expiration="500" />

</expireClientsList>

</wmsLayer>

3)完整的geowebcache.xml文件内容如下：

<?xml version="1.0" encoding="utf-8"?>

<gwcConfiguration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:noNamespaceSchemaLocation="http://geowebcache.org/schema/1.2.1/geowebcache.xsd"

xmlns="http://geowebcache.org/schema/1.2.1">

<version>1.2.1</version>

<backendTimeout>120</backendTimeout>

<gridSets>

<!-- Grid Set Example, by default EPSG:900913 and EPSG:4326 are defined -->

<gridSet>

<name>EPSG:2163 Grid Set</name>

<srs><number>2163</number></srs>

<extent>

<coords>

<double>-2495667.977678598</double>

<double>-2223677.196231552</double>

<double>3291070.6104286816</double>

<double>959189.3312465074</double>

</coords>

</extent>

<scaleDenominators>

<double>25000000</double>

<double>1000000</double>

<double>100000</double>

<double>25000</double>

</scaleDenominators>

<tileHeight>200</tileHeight>

<tileWidth>200</tileWidth>

</gridSet>

<gridSet>

<name>EPSG:42304 Grid Set</name>

<srs><number>42304</number></srs>

<extent>

<coords>

<double>-2200000</double>

<double>-712631</double>

<double>3072800</double>

<double>3840000</double>

</coords>

</extent>

<alignTopLeft>false</alignTopLeft>

<resolutions>

<double>14062.5</double>

<double>7031.25</double>

<double>3515.625</double>

<double>1757.8125</double>

<double>878.90625</double>

<double>439.453125</double>

</resolutions>

<tileHeight>256</tileHeight>

<tileWidth>256</tileWidth>

</gridSet>

</gridSets>

<layers>

<wmsLayer>

<name>topp:states</name>

<gridSubsets>

<gridSubset>

<gridSetName>EPSG:2163 Grid Set</gridSetName>

</gridSubset>

</gridSubsets>

<wmsUrl><string>http://atlas.openplans.org:8080/geoserver/wms</string></wmsUrl>

</wmsLayer>

<wmsLayer>

<name>raster test layer</name>

<mimeFormats><string>image/jpeg</string></mimeFormats>

<wmsUrl><string>http://atlas.openplans.org:8080/geoserver/wms</string></wmsUrl>

<wmsLayers>nurc:Img_Sample</wmsLayers>

</wmsLayer>

<wmsLayer>

<name>img states</name>

<mimeFormats><string>image/gif</string></mimeFormats>

<!-- Grid Subset Example -->

<gridSubsets>

<gridSubset>

<gridSetName>EPSG:4326</gridSetName>

<extent>

<coords>

<double>-129.6</double>

<double>3.45</double>

<double>-62.1</double>

<double>70.9</double>

</coords>

</extent>

</gridSubset>

</gridSubsets>

<wmsUrl>

<string>http://atlas.openplans.org:8080/geoserver/wms</string>

</wmsUrl>

<wmsLayers>nurc:Img_Sample,topp:states</wmsLayers>

<transparent>false</transparent>

<bgColor>0x0066FF</bgColor>

<expireCacheList>

<expirationRule minZoom="0" expiration="60" />

</expireCacheList>

<expireClientsList>

<expirationRule minZoom="0" expiration="500" />

</expireClientsList>

</wmsLayer>

<wmsLayer>

<name>gmap</name>

<mimeFormats><string>image/png</string></mimeFormats>

<!-- Grid Subset Example -->

<gridSubsets>

<gridSubset>

<gridSetName>EPSG:42304 Grid Set</gridSetName>

<extent>

<coords>

<double>-2200000</double>

<double>-712631</double>

<double>3072800</double>

<double>3840000</double>

</coords>

</extent>

</gridSubset>

</gridSubsets>

<wmsUrl>

<string>http://localhost:8040/cgi-bin/mapserv.exe?MAP=/ms4w/apps/gmap/htdocs/gmap75_wms.map&amp;</string>

</wmsUrl>

<wmsLayers>bathymetry,land_fn</wmsLayers>

<transparent>false</transparent>

<bgColor>0x0066FF</bgColor>

<expireCacheList>

<expirationRule minZoom="0" expiration="60" />

</expireCacheList>

<expireClientsList>

<expirationRule minZoom="0" expiration="500" />

</expireClientsList>

</wmsLayer>

</layers>

</gwcConfiguration>

5.启动Tomcat服务，预生成缓存图片。

在IE中打开网址为：http://localhost:8020/geowebcache/home的网页

点击“A list of all the layers and automatic demos”，进入如下的页面

点击“Seed this layer”

在弹出的输入用户名与密码的对话框中输入如下的信息后点“确定”按钮，进入如下的页面

用户名：geowebcache

密码：secured

将“Zoom stop:”下拉列表框选择最大的数，后点击“Submit”按钮

进入如下的页面

可以查看Tomcat中的输出信息

6.调用GeoWebCache地图切片缓存的ASPNET+OpenLayers客户端的代码为：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="MapServer.aspx.cs" Inherits="ASPNETAJAXDemo.OpenLayersWebGIS.MapServer" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title>访问ArcIMS服务的Demo</title>

<link rel="stylesheet" href="theme/default/style.css" type="text/css" />

<link rel="stylesheet" href="style.css" type="text/css" />

<script type="text/javascript" src="lib/OpenLayers.js"></script>

<script type="text/javascript">

var lon = 436400;

var lat = 1563684.5;

var zoom = 100;

var map, layer;

function init() {

var optionsMap = {

maxExtent: new OpenLayers.Bounds(-2200000, -712631, 3072800, 3840000),

maxResolution: 100,

units: 'm',

projection: "EPSG:42304",

};

map = new OpenLayers.Map("map", optionsMap);

// GeoWebCache

layer = new OpenLayers.Layer.WMS(

"gmap",

"http://localhost:8020/geowebcache/service/wms/",

//"",

{

layers: "gmap",

format: "image/png",

transparent: "off"

},

{

maxExtent: new OpenLayers.Bounds(-2200000, -712631, 3072800, 3840000),

maxResolution: 14062.5,

resolutions: [14062.5,7031.25,3515.625,1757.8125,878.90625,439.453125],

//numZoomLevels: 5,

projection: "EPSG:42304",

units: "m"

}

);

map.addLayer(layer);

map.setCenter(new OpenLayers.LonLat(lon, lat), zoom);

//去掉所有缺省的地图操作控件

var controlArray = new Array();

var count = map.controls.length;

for (var i = 0; i < count; i++) {

var control = map.controls[i];

controlArray.push(control.id);

}

//alert(controlArray);

for (var i = 0; i < count; i++) {

var control = map.getControl(controlArray[i]);

//map.removeControl(control);

}

//添加新地地图操作控件

//map.addControl(new OpenLayers.Control.OverviewMap());

//map.addControl(new OpenLayers.Control.PanZoomBar());

alert(map.getResolution());

}

</script>

</head>

<body onload="init()">

<form id="form1" runat="server">

<h1 id="title" align="center">访问ArcIMS服务的Demo</h1>

<div id="map" align="center" class="smallmap"></div>

<div id="docs" align="center">

SmartMap Technology(By GIS Pathfinder)

</div>

</form>

</body>

</html>