Guacamole 简单案例

package com.test; import org.apache.guacamole.GuacamoleClientException; import org.apache.guacamole.GuacamoleException; import org.apache.guacamole.GuacamoleResourceNotFoundException; import org.apache.guacamole.GuacamoleServerException; import org.apache.guacamole.net.GuacamoleTunnel; import org.apache.guacamole.servlet.GuacamoleHTTPTunnelServlet; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; public class MyGuacamoleHTTPTunnelServlet extends GuacamoleHTTPTunnelServlet{ private final Logger logger = LoggerFactory.getLogger(MyGuacamoleHTTPTunnelServlet.class); private static final int READ_PREFIX_LENGTH = "read:".length(); private static final int WRITE_PREFIX_LENGTH = "write:".length(); @Override protected GuacamoleTunnel doConnect(HttpServletRequest httpServletRequest) throws GuacamoleException { return null; } @Override protected void handleTunnelRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException { try { String query = request.getQueryString(); if (query == null) { throw new GuacamoleClientException("No query string provided."); } if (query.startsWith("connect")) { GuacamoleTunnel tunnel = this.doConnect(request); if (tunnel == null) { throw new GuacamoleResourceNotFoundException("No tunnel created."); } this.registerTunnel(tunnel); try { response.setHeader("Cache-Control", "no-cache"); response.getWriter().print(tunnel.getUUID().toString()); } catch (IOException var6) { throw new GuacamoleServerException(var6); } } else if (query.startsWith("read:")) { this.doRead(request, response, query.substring(READ_PREFIX_LENGTH, READ_PREFIX_LENGTH + 36)); } else { if (!query.startsWith("write:")) { throw new GuacamoleClientException("Invalid tunnel operation: " + query); } this.doWrite(request, response, query.substring(WRITE_PREFIX_LENGTH, WRITE_PREFIX_LENGTH + 36)); } } catch (GuacamoleClientException var7) { this.logger.warn("HTTP tunnel request rejected: {}", var7.getMessage()); this.sendError(response, var7.getStatus(), var7.getMessage()); } catch (GuacamoleException var8) { this.logger.error("HTTP tunnel request failed: {}", var8.getMessage()); this.logger.debug("Internal error in HTTP tunnel.", var8); this.sendError(response, var8.getStatus(), "Internal server error."); } } }