Guacamole系列三：用springboot寫guacamole客戶端

上一節《Guacamole系列二：客戶端安裝》末尾說到了可參照官網文檔《Writing your own Guacamole application》用servlet寫自己的guacamole客戶端，本文在此基礎上用springboot簡化開發自定義guacamole客戶端。

在開工前從官網下載客戶端包：http://apache.org/dyn/closer.cgi?action=download&filename=guacamole/1.1.0/source/guacamole-client-1.1.0.tar.gz

本文以eclipse作爲IDE，新建一個空springboot工程，增加maven配置：

<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<exclusions>
				<exclusion>
					<groupId>org.apache.logging.log4j</groupId>
					<artifactId>log4j-api</artifactId>
				</exclusion>
				<exclusion>
					<groupId>org.apache.logging.log4j</groupId>
					<artifactId>log4j-to-slf4j</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
			<exclusions>
				<exclusion>
					<groupId>org.junit.vintage</groupId>
					<artifactId>junit-vintage-engine</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<!-- Servlet API -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
			<scope>provided</scope>
		</dependency>
		<!-- Main Guacamole library -->
		<dependency>
			<groupId>org.apache.guacamole</groupId>
			<artifactId>guacamole-common</artifactId>
			<version>1.1.0</version>
		</dependency>
		<!-- Guacamole JavaScript library -->
		<dependency>
			<groupId>org.apache.guacamole</groupId>
			<artifactId>guacamole-common-js</artifactId>
			<version>1.1.0</version>
			<type>zip</type>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-websocket</artifactId>
		</dependency>

將下載的guacamole-client包裏的\doc\guacamole-example頁面文件複製到工程src/mian/resources/static

在springboot啓動類增加servlet掃描註解：@ServletComponentScan
新增servlet類：

package com.example.demo;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;

import org.apache.guacamole.GuacamoleException;
import org.apache.guacamole.net.GuacamoleSocket;
import org.apache.guacamole.net.GuacamoleTunnel;
import org.apache.guacamole.net.InetGuacamoleSocket;
import org.apache.guacamole.net.SimpleGuacamoleTunnel;
import org.apache.guacamole.protocol.ConfiguredGuacamoleSocket;
import org.apache.guacamole.protocol.GuacamoleConfiguration;
import org.apache.guacamole.servlet.GuacamoleHTTPTunnelServlet;


@WebServlet(urlPatterns = "/tunnel")
public class HttpTunnelServlet extends GuacamoleHTTPTunnelServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = -3224942386695394818L;

	@Override
	protected GuacamoleTunnel doConnect(HttpServletRequest request) throws GuacamoleException {
		String hostname = "192.168.1.15"; //guacamole server地址
        int port = 4822; //guacamole server端口
        GuacamoleConfiguration configuration = new GuacamoleConfiguration();
        configuration.setProtocol("rdp"); // 遠程連接協議
        configuration.setParameter("hostname", "192.168.1.14");
        configuration.setParameter("port", "3389");
        configuration.setParameter("username", "test");
        configuration.setParameter("password", "test");
        configuration.setParameter("ignore-cert", "true");
 
        GuacamoleSocket socket = new ConfiguredGuacamoleSocket(
                new InetGuacamoleSocket(hostname, port),
                configuration
        );
        GuacamoleTunnel tunnel = new SimpleGuacamoleTunnel(socket);
        return tunnel;
	}
}

新增WebSocketConfig類：

package com.example.demo;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;

@Configuration
public class WebSocketConfig {
 
    @Bean
     public ServerEndpointExporter serverEndpointExporter() {
         return new ServerEndpointExporter();
     }
}

啓動後訪問你的地址，若無問題會直接遠程進入代碼中配置好的機器。

此處有以上示例源碼工程下載。