Question

如何让telnet的Java流与ExpectIt一起使用？使用Linux上的实际Telnet客户端而非使用Java库，例如Apache Telnet as below。

这是在expect的手册页的上下文中：

Expect是一个与其他互动节目“对话”的节目根据剧本。

关于previous, vague, overly broad问题的范围要窄得多的后续问题，其中发表了以下评论：

与所有其他Java库一样，库使用标准Java 流可以来自Telnet客户端，套接字连接或任何其他流源。这是一个telnet示例： github.com/Alexey1Gavrilov/ExpectIt/blob/master/expectit-core/... - 阿列克谢加夫里洛夫

以下是example code：

package net.sf.expectit;

/*
 * #%L
 * ExpectIt
 * %%
 * Copyright (C) 2016 Alexey Gavrilov and contributors
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import static net.sf.expectit.matcher.Matchers.contains;

import java.io.IOException;
import org.apache.commons.net.telnet.TelnetClient;

/**
 * A telnet client example showing weather forecast for a city.
 */
public class TelnetExample {
    public static void main(String[] args) throws IOException {
        TelnetClient telnet = new TelnetClient();
        telnet.connect("rainmaker.wunderground.com");


        StringBuilder wholeBuffer = new StringBuilder();
        Expect expect = new ExpectBuilder()
                .withOutput(telnet.getOutputStream())
                .withInputs(telnet.getInputStream())
                .withEchoOutput(wholeBuffer)
                .withEchoInput(wholeBuffer)
                .withExceptionOnFailure()
                .build();

        expect.expect(contains("Press Return to continue"));
        expect.sendLine();
        expect.expect(contains("forecast city code--"));
        expect.sendLine("SAN");
        expect.expect(contains("X to exit:"));
        expect.sendLine();

        String response = wholeBuffer.toString();
        System.out.println(response);

        expect.close();
    }
}

另见：https://stackoverflow.com/a/4532395/262852

Answer 1

您可以生成一个telnet客户端进程并连接到进程的输入和输出流。类似的东西：

        Process process = Runtime.getRuntime().exec("telnet rainmaker.wunderground.com");
        StringBuilder wholeBuffer = new StringBuilder();
        Expect expect = new ExpectBuilder()
                .withOutput(process.getOutputStream())
                .withInputs(process.getInputStream())
                .withEchoOutput(wholeBuffer)
                .withEchoInput(wholeBuffer)
                .withExceptionOnFailure()
                .build();

以下是完整示例的link。

如何获取ExpectIt的Java流来驱动Telnet

1 个答案: