geoserver通过rest自动发布postigs图层java示例

以下是使用 Java 代码通过 GeoServer REST API 自动发布 PostGIS 图层的示例：

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Base64;

public class GeoServerPublisher {
    
    private static final String GEOSERVER_URL = "http://localhost:8080/geoserver";
    private static final String REST_URL = GEOSERVER_URL + "/rest";
    private static final String WORKSPACE = "myworkspace";
    private static final String DATASTORE = "mydatastore";
    private static final String USERNAME = "admin";
    private static final String PASSWORD = "geoserver";
    
    public static void main(String[] args) throws IOException {
        // Encode username and password as Base64 for authentication
        String auth = USERNAME + ":" + PASSWORD;
        String authHeader = "Basic " + Base64.getEncoder().encodeToString(auth.getBytes());
        
        // Create workspace
        createWorkspace("myworkspace", authHeader);
        
        // Create datastore
        createDatastore("mydatastore", authHeader);
        
        // Publish PostGIS layer
        publishPostgisLayer("myworkspace", "mydatastore", "mytable", "mylayer", authHeader);
    }
    
    private static void createWorkspace(String workspace, String authHeader) throws IOException {
        URL url = new URL(REST_URL + "/workspaces");
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setRequestMethod("POST");
        con.setRequestProperty("Authorization", authHeader);
        con.setRequestProperty("Content-Type", "application/xml");
        con.setDoOutput(true);
        
        String xml = "<workspace><name>" + workspace + "</name></workspace>";
        
        con.getOutputStream().write(xml.getBytes());
        
        int responseCode = con.getResponseCode();
        if (responseCode != 201) {
            throw new IOException("Failed to create workspace: " + con.getResponseMessage());
        }
    }
    
    private static void createDatastore(String datastore, String authHeader) throws IOException {
        URL url = new URL(REST_URL + "/workspaces/" + WORKSPACE + "/datastores");
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setRequestMethod("POST");
        con.setRequestProperty("Authorization", authHeader);
        con.setRequestProperty("Content-Type", "application/xml");
        con.setDoOutput(true);
        
        String xml = "<dataStore><name>" + datastore + "</name><connectionParameters><host>localhost</host><port>5432</port><database>mydb</database><user>myuser</user><passwd>mypassword</passwd><dbtype>postgis</dbtype></connectionParameters></dataStore>";
        
        con.getOutputStream().write(xml.getBytes());
        
        int responseCode = con.getResponseCode();
        if (responseCode != 201) {
            throw new IOException("Failed to create datastore: " + con.getResponseMessage());
        }
    }
    
    private static void publishPostgisLayer(String workspace, String datastore, String table, String layer, String authHeader) throws IOException {
        URL url = new URL(REST_URL + "/workspaces/" + workspace + "/datastores/" + datastore + "/featuretypes");
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setRequestMethod("POST");
        con.setRequestProperty("Authorization", authHeader);
        con.setRequestProperty("Content-Type", "application/xml");
        con.setDoOutput(true);
        
        String xml = "<featureType><name>" + layer + "</name><nativeName>" + table + "</nativeName></featureType>";
        
        con.getOutputStream().write(xml.getBytes());
        
        int responseCode = con.getResponseCode();
        if (responseCode != 201) {
            throw new IOException("Failed to publish layer: " + con.getResponseMessage());
        }
    }
}

请注意，这只是一个示例，并且需要根据您的实际情况进行修改。您需要将以下变量替换为您自己的值：

- GEOSERVER_URL: GeoServer 的 URL 地址。
- WORKSPACE: 工作空间名称。
- DATASTORE: 数据存储名称。
- USERNAME: GeoServer 管理员用户名。
- PASSWORD: GeoServer 管理员密码。
- createDatastore 方法中的连接参数：数据库主机名、端口、数据库名称、用户名和密码。
- publishPostgisLayer 方法中的表和图层名称。

还需要注意的是，此代码需要在 GeoServer 安装在本地计算机上且正在运行的情况下才能正常工作。如果 GeoServer 安装在远程服务器上，则需要更改 GEOSERVER_URL 变量为远程服务器的 URL 地址。