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大家好，我有一个 Web 服务可以帮助我完成登录过程，但是当我运行代码时，我收到错误消息“应用程序已意外停止......

这是我的网络服务：

package org.webserv.ws;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class hello {
    public String authentication(String userName,String password) {
        String retrievedUserName = "";  
        String retrievedPassword = "";
        String status = "";

        try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/android           app.","","admin");
            PreparedStatement statement =  con.prepareStatement("SELECT * FROM user account info. WHERE    username = '"+userName+"'AND password = '"+password+"'");
            ResultSet result = statement.executeQuery();

            while(result.next()){
                retrievedUserName = result.getString("username");
                retrievedPassword = result.getString("password");
            }

            if(retrievedUserName.equals(userName)&&retrievedPassword.equals(password)){
                status = "Success!";
            }
            else { status = "Login fail!!!"; }

        }
        catch(Exception e) { e.printStackTrace(); }

        return status; 
    }
}

这里是logcat

212: E/AndroidRuntime(314): at dalvik.system.NativeStart.main(Native Method) 01-28 15:03:38.001: I/Process(314): 发送信号。PID：314 SIG：9

这是 AndroidLoginExampleActivity.java 文件

package com.androidlogin.ws;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class AndroidLoginExampleActivity extends Activity {
private final String NAMESPACE = "http://ws.webserv.org";
private final String URL = "http://localhost:8080/androidapp./services/hello?wsdl";
private final String SOAP_ACTION = "http://ws.webserv.org/authentication";
private final String METHOD_NAME = "authentication";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Button login = (Button) findViewById(R.id.btn_login);
    login.setOnClickListener(new View.OnClickListener() {

        public void onClick(View arg0) {
            loginAction();

        }
    });
}

private void loginAction(){
    SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

    EditText userName = (EditText) findViewById(R.id.tf_userName);
    String user_Name = userName.getText().toString();
    EditText userPassword = (EditText) findViewById(R.id.tf_password);
    String user_Password = userPassword.getText().toString();

  //Pass value for userName variable of the web service
    PropertyInfo unameProp =new PropertyInfo();
    unameProp.setName("userName");//Define the variable name in the web service method
    unameProp.setValue(user_Name);//set value for userName variable
    unameProp.setType(String.class);//Define the type of the variable
    request.addProperty(unameProp);//Pass properties to the variable

  //Pass value for Password variable of the web service
    PropertyInfo passwordProp =new PropertyInfo();
    passwordProp.setName("password");
    passwordProp.setValue(user_Password);
    passwordProp.setType(String.class);
    request.addProperty(passwordProp);

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
    envelope.setOutputSoapObject(request);
    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

    try{
        androidHttpTransport.call(SOAP_ACTION, envelope);
           SoapPrimitive response = (SoapPrimitive)envelope.getResponse();

           TextView result = (TextView) findViewById(R.id.tv_status);
           result.setText(response.toString());

    }
    catch(Exception e){

    }
   }

}

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1 回答 1

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ksoap2-android-assembly-2.6.2-jar-with-dependencies.jar

添加此 jar 文件 /libs 文件夹，以便Eclipse ADT自动将您的 jar 添加到应用程序的构建路径中。我希望这能帮到您。

谢谢！！

于 2013-01-28T15:59:14.783 回答