經過Java代碼自動發佈Geoserver的地圖服務WMS

GeoServer 顧名思義。是一個Server，它是開源的，容許用戶查看和編輯地理數據的服務器，它能夠比較容易的在用戶之間迅速共享空間地理信息。利用Geoserver能夠把數據做爲maps/images來發布(利用WMS來實現)也能夠直接發佈實際的數據(利用WFS來實現)，它同時也提供了修改，刪除和新增的功能(利用WFS-T)。

爲何要使用GeoServer？相比較同類產品ArcServer不是一個開源GIS服務器，全部想在Web地圖應用開發中使用ArcServer就須要付費，並且價格比較高（ref：GeoServer與ArcServer對比）。本文將完成用ArcGIS切片好的數據，經過代碼自動發佈Geoserver 中。若是不清楚手動發佈流程和實現的效果，能夠看個人另一篇文章：GeoServer手動發佈本地Shapefile地圖。

1、引入pom依賴

指定遠程倉庫

<repository>
      <id>GeoSolutions</id>
      <url>http://maven.geo-solutions.it/</url>
   </repository>

加入dependency 

<dependency>
    <groupId>it.geosolutions</groupId>
    <artifactId>geoserver-manager</artifactId>
    <version>1.7.0</version>
  </dependency>

2、編寫發佈工具類

常量類Constants

public class Constant {

    public static final int BYTE_BUFFER = 1024;

    public static final int BUFFER_MULTIPLE = 10;

    /**
     * 縣圖集類型
     */
    public class AtlasType {
        //點位圖
        public static final String ATLAS_TYPE_1 = "1";
        //單元圖
        public static final String ATLAS_TYPE_2 = "2";
        //土壤類型圖
        public static final String ATLAS_TYPE_3 = "3";
        //評價結果表
        public static final String ATLAS_TYPE_4 = "4";
    }

    public class FileType{
        public static final int FILE_IMG = 1;
        public static final int FILE_ZIP = 2;
        public static final int FILE_VEDIO= 3;
        public static final int FILE_APK = 4;
        public static final int FIVE_OFFICE = 5;
        public static final String FILE_IMG_DIR= "/img/";
        public static final String FILE_ZIP_DIR= "/zip/";
        public static final String FILE_VEDIO_DIR= "/video/";
        public static final String FILE_APK_DIR= "/apk/";
        public static final String FIVE_OFFICE_DIR= "/office/";
    }


    public static String parseAtlasTypeToName(String type){
        String typeName="";
        switch (type){
            case AtlasType.ATLAS_TYPE_1: typeName="bitMap"; break;
            case AtlasType.ATLAS_TYPE_2: typeName="unitMap"; break;
            case AtlasType.ATLAS_TYPE_3: typeName="typeMap"; break;
            default:break;
        }
        return  typeName;
    }

    public static class FilePostFix{
        public static final String ZIP_FILE =".zip";

        public static final String [] IMAGES ={"jpg", "jpeg", "JPG", "JPEG", "gif", "GIF", "bmp", "BMP"};
        public static final String [] ZIP ={"ZIP","zip","rar","RAR"};
        public static final String [] VIDEO ={"mp4","MP4","mpg","mpe","mpa","m15","m1v", "mp2","rmvb"};
        public static final String [] APK ={"apk","exe"};
        public static final String [] OFFICE ={"xls","xlsx","docx","doc","ppt","pptx"};

    }

    public class Atlas {
        public static final int ATLAS_FIELD_STATUS_HIDE = 0;
        public static final int ATLAS_FIELD_STATUS_SHOW = 1;
    }

}

發佈工具類

import it.geosolutions.geoserver.rest.GeoServerRESTManager;
import it.geosolutions.geoserver.rest.GeoServerRESTPublisher;
import it.geosolutions.geoserver.rest.GeoServerRESTReader;
import org.apache.commons.httpclient.NameValuePair;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ResourceBundle;

public class GeoServerUtil {
    public static final String RESTURL;

    public static final String RESTUSER;

    public static final String RESTPW;

    public static final String GS_VERSION;

    public static java.net.URL URL;

    public static GeoServerRESTManager manager;

    public static GeoServerRESTReader reader;

    public static GeoServerRESTPublisher publisher;

    private static ResourceBundle bundle = ResourceBundle.getBundle("constant");

   //初始化用戶名密碼賦值,發佈圖集時會進行身份認證
    static {
        RESTURL = getenv("gsmgr_resturl", "http://localhost:18080/geoserver/");
        RESTUSER = getenv("gsmgr_restuser","admin");
        RESTPW = getenv("gsmgr_restpw", "geoserver");
        GS_VERSION = getenv("gsmgr_version", "2.11.2");
        try {
            URL = new URL(RESTURL);
            manager = new GeoServerRESTManager(URL, RESTUSER, RESTPW);
            reader = manager.getReader();
            publisher = manager.getPublisher();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
    }

   //獲取環境信息
    private static String getenv(String envName, String envDefault) {
        String env = System.getenv(envName);
        String prop = System.getProperty(envName, env);
        return prop != null ? prop : envDefault;
    }

    public  static boolean  publishShpAndReloadStore(String workspace,String zipFilePath,String storeName,String layerName,String styleType,String coordinateSystem) throws  Exception{
        //座標系,判斷是否爲空
        if(ComUtil.isEmpty(coordinateSystem)){
            coordinateSystem=GeoServerRESTPublisher.DEFAULT_CRS;
        }
        //存在相應的工做區
        if(!reader.existsWorkspace(workspace)){
            publisher.createWorkspace(workspace);
        }
        boolean published;
        if(Constant.AtlasStyleType.ATLAS_STYLE_TYPE_5.equals(styleType)){
             published = publisher.publishShp(workspace, storeName, layerName, new File(zipFilePath),coordinateSystem,
                                  new NameValuePair[]{new NameValuePair("charset", "GBK")});
        }else{
            //讀取style文件
            String styleFile = bundle.getString("geoServer-dir")+"/"+styleType+".sld";
            File file  = new File(styleFile);
            String strStyle = "style"+styleType;
            //是否已經發布了改style
            if(!reader.existsStyle(workspace,strStyle)){
                publisher.publishStyleInWorkspace(workspace,file,strStyle);
            }
            //建立發佈類,放入用戶名密碼和url
            GeoServerRESTPublisher geoServerRESTPublisher  =new GeoServerRESTPublisher(RESTURL,RESTUSER,RESTPW);
                                                        //工做區      數據存儲名稱
            published =geoServerRESTPublisher.publishShp( workspace,  storeName, new NameValuePair[]{new NameValuePair("charset", "GBK")},
                   //圖層名稱               指定用於發佈資源的方法
                    layerName, it.geosolutions.geoserver.rest.GeoServerRESTPublisher.UploadMethod.FILE,
                    //        zip圖集的地址           座標系         樣式
                    new File(zipFilePath).toURI(),coordinateSystem, strStyle);
        }
        return published;
    }

    public static boolean unPublishShpAndReloadStore(String workspace,String storeName){
        return publisher.removeLayer(workspace,storeName);
    }


}

3、解壓zip文件工具類

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;

import java.io.*;
import java.nio.channels.FileChannel;
import java.util.*;

/**
 * <p>
 * 文件操做類
 * </p>
 *
 * @author liugh
 * @since 2018/3/20
 */
public class FileUtils {

    private static ResourceBundle bundle = ResourceBundle.getBundle("constant");

    //配置文件裏得到,根目錄地址 /data/test-version
    public static String fileUploadPath =bundle.getString("file-upload.dir");

    /**
     * 判斷當前文件是不是zip文件
     *
     * @param fileName
     *            文件名
     * @return true 是
     */
    public static boolean isZip(String fileName) {
        return fileName.toLowerCase().endsWith(Constant.FilePostFix.ZIP_FILE);
    }


    /**
     * 刪除目錄
     * @param fileName
     */
    public static void removeDocument(String fileName){
        File file=new File(fileName);
        if(file.exists() && file.isFile()) {
            file.delete();
        }
        if(file.isDirectory()){
            delDir(fileName);
        }
        if (fileName.lastIndexOf(Constant.FilePostFix.ZIP_FILE) > 0) {
            delDir(fileName.substring(0,fileName.lastIndexOf(Constant.FilePostFix.ZIP_FILE))+"/");
        }

    }


    /**
     * 獲取座標系
     * @param filePath
     * @return
     */
    public static String getCoordinate(String filePath){
        try{
            InputStreamReader reader = new InputStreamReader(new FileInputStream(filePath),"UTF-8");
            BufferedReader br = new BufferedReader(reader);
            String line;
            StringBuilder sb  =new StringBuilder();
            while ((line = br.readLine()) != null) {
                sb.append(line);
            }
            br.close();
            reader.close();
            String str = sb.toString();
            String substring = str.substring(str.indexOf("\"") + 1, str.indexOf("\","));
            return parseCoordinate(substring);
        } catch(IOException e){
            e.printStackTrace();
        }
        return null;
    }

    private static String parseCoordinate(String  coordinate){
        switch (coordinate){
            case "Beijing_1954_GK_Zone_21N": return "EPSG:21481";
            case "Beijing_1954_GK_Zone_22N": return "EPSG:21482";
            case "GCS_Xian_1980": return "EPSG:4610";
            case "GCS_WGS_1984": return "EPSG:4326";
            default:return null;
        }
    }

    /**
     * 檢查第一級目錄是否有.shp文件
     * @param sourcePath
     * @return
     */
    public static boolean checkZipFile(String sourcePath){
        System.setProperty("sun.zip.encoding", System.getProperty("sun.jnu.encoding"));
        ZipFile zipFile =null;
        try {
            File sourceFile = new File(sourcePath);
            zipFile = new ZipFile(sourcePath, "gbk");
            if ((!sourceFile.exists()) && (sourceFile.length() <= 0)) {
                throw new Exception("要解壓的文件不存在!");
            }
            Enumeration<?> e = zipFile.getEntries();
            while (e.hasMoreElements()) {
                ZipEntry zipEnt = (ZipEntry) e.nextElement();
                if (zipEnt.isDirectory()) {
                    return false;
                }
                if(zipEnt.getName().endsWith(".shp")){
                    return true;
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }finally {
            try {
                if(null!=zipFile){
                    zipFile.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return false;
    }

    private static List<String> listFile = new ArrayList<>();

    /**
     * 將存放在sourceFilePath目錄下的源文件，打包成fileName名稱的zip文件，並存放到zipFilePath路徑下
     * (把指定文件夾下的全部文件目錄和文件都壓縮到指定文件夾下)
     * @param sourceFilePath
     *            :待壓縮的文件路徑
     * @param zipFilePath
     *            :壓縮後存放路徑
     * @param fileName
     *            :壓縮後文件的名稱
     * @return
     */
    public static boolean fileToZip(String sourceFilePath,String zipFilePath,String fileName)throws  Exception{
        boolean flag = false;
        FileOutputStream fos =null;
        ZipOutputStream zos =null;
        BufferedInputStream bis =null;
        FileInputStream  fis =null;
        BufferedOutputStream bufferedOutputStream =null;
        File sourceFile = new File(sourceFilePath);
        if(sourceFile.exists() == false){
            throw new Exception("待壓縮的文件目錄："+sourceFilePath+"不存在.");
        }else{
            try {
                File zipFile = new File(zipFilePath +fileName );
                if(zipFile.exists()){
                    throw new Exception(zipFilePath + "目錄下存在名字爲:" + fileName +Constant.FilePostFix.ZIP_FILE +"打包文件.");
                }else{
                    File[] sourceFiles = sourceFile.listFiles();
                    if(null == sourceFiles || sourceFiles.length<1){
                        throw new Exception("待壓縮的文件目錄：" + sourceFilePath + "裏面不存在文件，無需壓縮.");
                    }else{
                        fos = new FileOutputStream(zipFile);
                        bufferedOutputStream = new BufferedOutputStream(fos);
                        zos = new ZipOutputStream(bufferedOutputStream);
                        byte[] bufs = new byte[1024*10];
                        for(int i=0;i<sourceFiles.length;i++){
                            //建立ZIP實體，並添加進壓縮包
                            ZipEntry zipEntry = new ZipEntry(sourceFiles[i].getName());
                            zos.putNextEntry(zipEntry);
                            //讀取待壓縮的文件並寫進壓縮包裏
                            fis = new FileInputStream(sourceFiles[i]);
                            bis = new BufferedInputStream(fis, Constant.BYTE_BUFFER *Constant.BUFFER_MULTIPLE);
                            int read;
                            while((read=bis.read(bufs, 0, Constant.BYTE_BUFFER *Constant.BUFFER_MULTIPLE)) != -1){
                                zos.write(bufs,0,read);
                            }
                            fis.close();
                            bis.close();
                        }
                        flag = true;
                    }
                }
            } catch (FileNotFoundException e) {
                e.printStackTrace();
                throw new RuntimeException(e);
            } catch (IOException e) {
                e.printStackTrace();
                throw new RuntimeException(e);
            } finally{
                //關閉流
                try {
                    if (null != bis) {
                        bis.close();
                    }
                    if (null != zos) {
                        zos.close();
                    }
                    if (null != bufferedOutputStream) {
                        bufferedOutputStream.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return flag;
    }


    public static boolean updateLayerNameByZipFile(String sourcePath,String targetLayerName) {
        File file = new File(sourcePath);
        if (file.isDirectory()) {
            String[] fileList = file.list();
            if (!ComUtil.isEmpty(fileList)) {
                for (String fileName : fileList) {
                    File oldName = new File(sourcePath + File.separator + fileName);
                    File newName = new File(sourcePath + File.separator + targetLayerName + fileName.substring(fileName.lastIndexOf(".")));
                    if (".xml".equals(fileName.substring(fileName.lastIndexOf(".")))) {
                        newName = new File(sourcePath + File.separator + targetLayerName + fileName.substring(fileName.lastIndexOf(".shp")));
                    }
                    oldName.renameTo(newName);
                }
                return true;
            }
            return false;
        }
        return false;
    }

    /**
     * 保存文件到臨時目錄
     * @param inputStream 文件輸入流
     * @param fileName 文件名
     */
    public static void savePic(InputStream inputStream, String fileName) {
        OutputStream os = null;
        try {
            // 保存到臨時文件
            // 1K的數據緩衝
            byte[] bs = new byte[1024];
            // 讀取到的數據長度
            int len;
            // 輸出的文件流保存到本地文件
            File tempFile = new File(fileUploadPath);
            if (!tempFile.exists()) {
                tempFile.mkdirs();
            }
            os = new FileOutputStream(tempFile.getPath() + File.separator + fileName);
            // 開始讀取
            while ((len = inputStream.read(bs)) != -1) {
                os.write(bs, 0, len);
            }
        }catch (Exception e) {
            e.printStackTrace();
        } finally {
            // 完畢，關閉全部連接
            try {
                os.close();
                inputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static String saveFile(InputStream file, int type, String name, String tag) throws Exception {
        Date time = new Date();
        String fileName = fileName(time, type, name,tag);
        File newFile = getNewFile(fileName);
        File oldFile = createTemporaryFile(file, name);
        copyFile(newFile, new FileInputStream(oldFile));
        oldFile.delete();
        return fileName;
    }

    public static File createTemporaryFile(InputStream file, String name) throws Exception {
        File temp = new File(name);
        OutputStream out = new FileOutputStream(temp);
        try {
            int byteCount = 0;
            byte[] buffer = new byte[4096];
            int bytesRead = -1;
            while ((bytesRead = file.read(buffer)) != -1) {
                out.write(buffer, 0, bytesRead);
                byteCount += bytesRead;
            }
            out.flush();
        }
        finally {
            try {
                file.close();
            }
            catch (IOException ex) {
            }
            try {
                out.close();
            }
            catch (IOException ex) {
            }
        }
        return temp;
    }

    private static void copyFile(File newFile, FileInputStream file) throws Exception {
        FileOutputStream outFile = new FileOutputStream(newFile);
        FileChannel inC = file.getChannel();
        FileChannel outC = outFile.getChannel();
        int length = 2097152;
        while (true) {
            if (inC.position() == inC.size()) {
                inC.close();
                outC.close();
                outFile.close();
                file.close();
                return ;
            }
            if ((inC.size() - inC.position()) < 20971520) {
                length = (int) (inC.size() - inC.position());
            }else {
                length = 20971520;
            }
            inC.transferTo(inC.position(), length, outC);
            inC.position(inC.position() + length);
        }

    }

    public static File getNewFile(String fileName) throws IOException {
        String filePath = bundle.getString("file-upload.dir") + fileName;
        File newFile = new File(filePath);
        File fileParent = newFile.getParentFile();
        if(!fileParent.exists()){
            fileParent.mkdirs();
        }
        if (!newFile.exists()){
            newFile.createNewFile();
        }
        return newFile;
    }

    /**
     * 文件保存路徑
     * @param time
     * @param type
     * @param name
     * @return
     */
    private static String fileName(Date time, int type, String name,String tag) {
        StringBuffer str = new StringBuffer();
        if (type== Constant.FileType.FILE_IMG) {
            str.append(Constant.FileType.FILE_IMG_DIR);
        }
        if (type==Constant.FileType.FILE_ZIP) {
            str.append(Constant.FileType.FILE_ZIP_DIR);
        }
        if (type==Constant.FileType.FILE_VEDIO) {
            str.append(Constant.FileType.FILE_VEDIO_DIR);
        }
        if (type==Constant.FileType.FILE_APK) {
            str.append(Constant.FileType.FILE_APK_DIR);
        }
        if (type==Constant.FileType.FIVE_OFFICE) {
            str.append(Constant.FileType.FIVE_OFFICE_DIR);
        }
        str.append(DateTimeUtil.formatDateToString(time));
        str.append("/");
        str.append(DateTimeUtil.currentidDatetime());
        if(!ComUtil.isEmpty(tag)) {
            str.append(tag);
        }
        str.append("-"+name);
        return str.toString();
    }
    public static String getFileUrl(String fileDir){
        return bundle.getString("file-upload.url") + fileDir;
    }


    /**
     * 刪除文件目錄
     * @param path
     */
    private static void delDir(String path){
        File dir=new File(path);
        if(dir.exists()){
            File[] tmp=dir.listFiles();
            for(int i=0;i<tmp.length;i++){
                if(tmp[i].isDirectory()){
                    delDir(path+File.separator+tmp[i].getName());
                }else{
                    tmp[i].delete();
                }
            }
            dir.delete();
        }
    }


    /**
     * 解壓zip格式的壓縮文件到指定位置
     *
     * @param sourcePath
     *            壓縮文件
     * @param targetPath
     *            解壓目錄
     * @throws Exception
     */
    public static boolean unZipFiles(String sourcePath, String targetPath) throws Exception {
        System.setProperty("sun.zip.encoding", System.getProperty("sun.jnu.encoding"));
        InputStream is =null;
        BufferedInputStream bis =null;
        try {
            (new File(targetPath)).mkdirs();
            File sourceFile = new File(sourcePath);
            // 處理中文文件名亂碼的問題
            ZipFile zipFile = new ZipFile(sourcePath, "UTF-8");
            if ((!sourceFile.exists()) && (sourceFile.length() <= 0)) {
                throw new Exception("要解壓的文件不存在!");
            }
            String strPath, gbkPath, strtemp;
            File tempFile = new File(targetPath);
            strPath = tempFile.getAbsolutePath();
            Enumeration<?> e = zipFile.getEntries();
            while (e.hasMoreElements()) {
                ZipEntry zipEnt = (ZipEntry) e.nextElement();
                gbkPath = zipEnt.getName();
                if (zipEnt.isDirectory()) {
                    strtemp = strPath + File.separator + gbkPath;
                    File dir = new File(strtemp);
                    dir.mkdirs();
                    continue;
                } else {
                    // 讀寫文件
                    is = zipFile.getInputStream((ZipEntry) zipEnt);
                    bis = new BufferedInputStream(is);
                    gbkPath = zipEnt.getName();
                    strtemp = strPath + File.separator + gbkPath;
                    // 建目錄
                    String strsubdir = gbkPath;
                    for (int i = 0; i < strsubdir.length(); i++) {
                        if ("/".equalsIgnoreCase(strsubdir.substring(i, i + 1))) {
                            String temp = strPath + File.separator + strsubdir.substring(0, i);
                            File subdir = new File(temp);
                            if (!subdir.exists()) {
                                subdir.mkdir();
                            }
                        }
                    }
                    FileOutputStream fos = new FileOutputStream(strtemp);
                    BufferedOutputStream bos = new BufferedOutputStream(fos);
                    int c;
                    while ((c = bis.read()) != -1) {
                        bos.write((byte) c);
                    }
                    bos.flush();
                    fos.close();
                    bos.close();
                }
            }
            zipFile.close();
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }finally {
            try {
                if (is != null) {
                    is.close();
                }
                if (bis != null) {
                    bis.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static boolean deleteUploadedFile(String fileName) {
        String filePath = bundle.getString("file-upload.dir") + fileName;
        File file =  new File(filePath);
        if(file.exists()){
            if(file.isFile()) {
                file.delete();
            }else{
                removeDocument(fileName);
            }
            return true;
        }else{
            return false;
        }
    }

    public static int getFileType(String originalFilename) {
        String postFix = originalFilename.split("//.")[originalFilename.split("//.").length-1];
        if(Arrays.asList(Constant.FilePostFix.IMAGES).contains(postFix)){
            return Constant.FileType.FILE_IMG;
        }
        if(Arrays.asList(Constant.FilePostFix.ZIP).contains(postFix)){
            return Constant.FileType.FILE_ZIP;
        }
        if(Arrays.asList(Constant.FilePostFix.VIDEO).contains(postFix)){
            return Constant.FileType.FILE_VEDIO;
        }
        if(Arrays.asList(Constant.FilePostFix.APK).contains(postFix)){
            return Constant.FileType.FILE_APK;
        }
        if(Arrays.asList(Constant.FilePostFix.OFFICE).contains(postFix)){
            return Constant.FileType.FIVE_OFFICE;
        }
        return Constant.FileType.FILE_IMG;
    }
}

4、可能會遇到的問題

1.座標系問題（顯示位置錯亂）。

GeoServer的座標系要根據ArcGIS切片好的數據的圖集座標系一一對應起來，否則會位置錯亂。左邊座標系能夠在圖集的.prj文件裏找到，右邊是GeoServer須要的，目前經常使用的是這幾個

2.發佈圖集報錯（表現爲點擊OpenLayers直接下載了空文件）：

• 可能與style有關，檢查編碼。我遇到一個大坑，在windows上修改的帶中文的.sld文件複製到linux上就會亂碼，致使圖集報錯。
• 可能與zip文件內容有關（儘可能用.zip，rar有低版本問題解決不了）。zip壓縮的文件必須是第一級目錄就有.shp等文件，不能包含目錄

   

• 獲取url發佈地址問題。能夠經過讀取本地Geoserver所在路徑，加上發佈的工做區名字，拼接圖層的id到url上便可。

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.ResourceBundle;


/**
 * <p>
 *  xml解析工具類
 * </p>
 *
 * @author liugh
 * @since 2018/4/3
 */
public class XmlUtil {

   private static String GEO_SERVER_PATH = ResourceBundle.getBundle("constant").getString("geoServer-dir");

    private static String BUNDLE_URL = ResourceBundle.getBundle("constant").getString("geoServer-url");

    private static String XML_ELEMENT_NAME="latLonBoundingBox";

    public static void main(String[] args)throws Exception {
        getMapUrl("1522723368940","unitMap");
    }

  //獲取圖集發佈地址
    public static String  getMapUrl(String layerId,String workspace)throws Exception{
        File file =new File(GEO_SERVER_PATH+File.separator+workspace);
        String[] fileList = file.list();
        StringBuilder mapUrl = new StringBuilder();
        mapUrl.append(BUNDLE_URL+workspace)
                .append("/wms?service=WMS&version=1.1.0&request=GetMap&layers=").append(workspace+":"+layerId).append("&styles=&bbox=");
        if(!ComUtil.isEmpty(fileList)){
            for (String fileName:fileList) {
                if(fileName.equals(layerId)){
                    String []  coordinates = readXMLDocument(layerId,workspace);
                    mapUrl.append(coordinates[0]+","+coordinates[2]+","+coordinates[1]+","+coordinates[3]).append("&width=768&height=437&srs=").append(coordinates[4]);
                }
            }
        }else{
            return null;
        }
        return  mapUrl.toString();
    }

    private static String []  readXMLDocument(String layerId, String workspace){
        File file = new File(GEO_SERVER_PATH+File.separator+workspace+
                File.separator+layerId+File.separator+layerId+File.separator+"featuretype.xml");
        if (!file.exists()) {
            try {
                throw new IOException("Can't find the path");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        //建立SAXReader對象
        SAXReader saxReader = new SAXReader();
        Document document;
        try {
            //讀取文件 轉換成Document
            document = saxReader.read(file);
            //獲取根節點元素對象  遍歷當前節點下的全部節點
            for (Iterator iter = document.getRootElement().elementIterator(); iter.hasNext();){
                //獲取節點
                Element e1 = (Element) iter.next();

                //若是過節點的名稱等於beanName那麼繼續進入循環讀取beanName節點下的全部節點
                if(e1.getName().equalsIgnoreCase(XML_ELEMENT_NAME)){
                    String [] ss = new String[5];
                    int i =0;
                    //遍歷beanName當前節點下的全部節點
                    for (Iterator iter1 = e1.elementIterator(); iter1.hasNext();){
                        Element e2 = (Element) iter1.next();
                        ss[i]= e2.getStringValue();
                        i++;
                    }
                    return ss;
                }
            }
        } catch (DocumentException e) {
            e.printStackTrace();
            return null;
        }
        return null;
    }
}

3.過濾屬性問題。

當鼠標點擊GeoServer發佈地圖的某個區域，會在下方顯示屬性。我這裏經過Http方式獲取到全部值，而後用Jsoup來解析，相似於爬蟲的方式。返回屬性後能夠根據業務屏蔽或展現一些屬性值。

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.select.Elements;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 *  HTTP請求工具類
 * </p>
 *
 * @author liugh
 * @since 2018/3/20
 */
public class HttpLayerPropertyUtil {

    /**
     * 獲取圖層全部屬性
     * @param layerPreviewURL
     * @return
     */
    public static List<Map<String,String>> getLayerProperty(String layerPreviewURL){
        List<Map<String,String>>  retList = new ArrayList();
        try {
            Document doc = Jsoup.connect(layerPreviewURL).get();
            Elements select = doc.select("th");
            Elements select1 = doc.select("td");
            for (int i = 0; i < select.size(); i++) {
                HashMap<String,String> tempMap = new HashMap<>(16);
                tempMap.put(cutValue(select.get(i).toString()), cutValue(select1.get(i).toString()));
                retList.add(tempMap);
            }
            return retList;
        } catch (IOException e) {
            System.out.println("頁面獲取異常！");
            e.printStackTrace();
        }
        return null;
    }

    private static String cutValue(String s){
        String substring = s.substring(4,s.indexOf("</"));
        return substring;
    }
}

若是讀者還遇到其餘問題，或者想要資源，能夠在下方評論，我看見就會回覆你。