网络搜索大部分不能实际解决问题。特意将解决方法写下。
创建MyAndroidHttpTransport 类 ，

package com.example.omhandroid.lib;

import org.ksoap2.transport.HttpTransportSE;
import org.ksoap2.transport.ServiceConnection;

import java.io.IOException;
import java.net.SocketException;

public class MyAndroidHttpTransport extends HttpTransportSE {

    private int timeout = 600000; //默认超时时间为60s*10
    private int readTimeout = 600000; //默认超时时间为60s*10
    public MyAndroidHttpTransport(String url) {
        super(url);
    }

    public MyAndroidHttpTransport(String url, int timeout) {
        super(url);
        this.timeout = timeout;
    }
    public ServiceConnection getServiceConnection() throws IOException {
        return new org.ksoap2.transport.ServiceConnectionSE(this.proxy, this.url, this.timeout, this.readTimeout);
    }
}

调用如下：

private static String SOAP_ADDRESS = ""; //http://195.100.15.33:8000/WebService1.asmx

// 命名空间
static String WSDL_TARGET_NAMESPACE = "http://tempuri.org/";

// 调用方法的名称
private static String OPERATION_NAME = ""; //HelloWorld1

// 生成调用WebService方法调用的soap信息，并且指定Soap版本
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
// 是否调用DotNet开发的WebService
envelope.dotNet = true;

envelope.setOutputSoapObject(request);

MyAndroidHttpTransport httpTransport = new MyAndroidHttpTransport(SOAP_ADDRESS);

httpTransport.debug = true;
try {
    httpTransport.call(WSDL_TARGET_NAMESPACE + OPERATION_NAME, envelope);
    Object response = envelope.getResponse();
    return response.toString();
} catch (Exception exception) {
    exception.printStackTrace();
    return "";
}

实测有效，可以放心使用