android soap webservers 无法执行 报错 ht.call(SOAP_ACTION, envelope);解决方法

1.可能没有加入网络访问权限，在Manifest里面加入，<uses-permission android:name="android.permission.INTERNET"/>

2.版本问题，很可能的问题，因为在android高于9的会出错，所以简单粗暴的办法就是，直接将版本信息

<uses-sdk
android:minSdkVersion="？"
android:targetSdkVersion="?"

/>

删除即可。

其他具体参考代码如下：

package com.example.soaptestforandroid;

import java.io.IOException;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import org.xmlpull.v1.XmlPullParserException;

import android.os.*;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.widget.*;

public class MainActivity extends Activity
{

    private static final String SERVICE_NAMESPACE = "http://services.jason.com/";
    private static final String SERVICE_URL = "http://172.16.1.164:8080/MyWebServer/UserInfoPort?wsdl";
    private EditText tv = null;
    
    
    
    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        
        try {
        tv = (EditText) findViewById(R.id.hello);
        
        //如果本系统为4.0以上（Build.VERSION_CODES.ICE_CREAM_SANDWICH为android4.0）
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            // 详见StrictMode文档
            StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                    .detectDiskReads().detectDiskWrites().detectNetwork()
                    .penaltyLog().build());
            StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                    .detectLeakedSqlLiteObjects().detectLeakedClosableObjects()
                    .penaltyLog().penaltyDeath().build());
        }

        // 调用的方法
        String mathodName = "GetUserInfo";
        String SOAP_ACTION = SERVICE_NAMESPACE + mathodName;
        // 创建HttpTransportSE对象
            HttpTransportSE ht = new HttpTransportSE(SERVICE_URL);
        
            ht.debug = true;
            // 使用soap协议创建Envelop对象
            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                    SoapEnvelope.VER10);
            // 实例化SoapObject对象
            SoapObject object = new SoapObject(SERVICE_NAMESPACE, mathodName);
            // 将SoapObject对象设置为SoapSerializationEnvelope对象的传出SOAP消息
            envelope.bodyOut = object;
            envelope.dotNet = true;
            envelope.setOutputSoapObject(object);
                // 调用webService
                ht.call(SOAP_ACTION, envelope);
                System.out.println("envelope.getResponse()---"
                        + envelope.getResponse());
                if (envelope.getResponse()!= null) {
            
                    SoapObject result = (SoapObject) envelope.bodyIn;
                    String name = result.getProperty(0).toString();
                    System.out.println(name);
                    tv.setText("返回值为：" + name);
                    
                } else {
                    tv.setText("无返回值");
                }
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } 
        
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}