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我开发了一个 android 应用程序。在我的 tomcat 控制台窗口中出现以下错误：

Error - Unable to Connect to the Databasejava.lang.ClassNotFoundException: com.mysql.jdbc.Driver
[ERROR] com/mysql/jdbc/Connection
 java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
  Caused by: java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
at org.web.travel_ceylon.ws.Travel_Ceylon_Web_Service.getLongitude_City(Travel_Ceylon_Web_Service.java:30)
... 29 more
    Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Connection
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1701)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1546)
... 30 more
     Error - Unable to Connect to the Databasejava.lang.ClassNotFoundException: com.mysql.jdbc.Driver
  [ERROR] com/mysql/jdbc/Connection
   java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
    Caused by: java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
at org.web.travel_ceylon.ws.Travel_Ceylon_Web_Service.getLatitude_City(Travel_Ceylon_Web_Service.java:47)
... 29 more
    Error - Unable to Connect to the Databasejava.lang.ClassNotFoundException:   com.mysql.jdbc.Driver
    [ERROR] com/mysql/jdbc/Connection
    java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
    Caused by: java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
at org.web.travel_ceylon.ws.Travel_Ceylon_Web_Service.getLongitude_Im_Place(Travel_Ceylon_Web_Service.java:64)
... 29 more
   Error - Unable to Connect to the Databasejava.lang.ClassNotFoundException: com.mysql.jdbc.Driver
   [ERROR] com/mysql/jdbc/Connection
    java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
     Caused by: java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
at org.web.travel_ceylon.ws.Travel_Ceylon_Web_Service.getLatitude_Im_Place(Travel_Ceylon_Web_Service.java:81)
... 29 more
    Error - Unable to Connect to the Databasejava.lang.ClassNotFoundException: com.mysql.jdbc.Driver
   [ERROR] com/mysql/jdbc/Connection
    java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
    Caused by: java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
at org.web.travel_ceylon.ws.Travel_Ceylon_Web_Service.getCategory_Im_Place(Travel_Ceylon_Web_Service.java:98)
... 29 more
   Error - Unable to Connect to the Databasejava.lang.ClassNotFoundException: com.mysql.jdbc.Driver
 [ERROR] com/mysql/jdbc/Connection
  java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
   Caused by: java.lang.NoClassDefFoundError: com/mysql/jdbc/Connection
at org.web.travel_ceylon.ws.Travel_Ceylon_Web_Service.getDescription_Im_Place(Travel_Ceylon_Web_Service.java:115)
... 29 more

我的网络服务编码部分是：

package org.web.travel_ceylon.ws;

import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;

public class Travel_Ceylon_Web_Service {
private String url;
private Connection con;
private Statement stmt;

public void connectToDB() {
url = "jdbc:mysql://localhost:3306/travel_ceylon";
try {
Class.forName("com.mysql.jdbc.Driver");
con = (Connection) DriverManager.getConnection(url, "root", "");
} catch (Exception e) {
System.out.println("Error - Unable to Connect to the Database" + e);

}
}

public float getLongitude_City(String city) {
connectToDB();
float lngt = 0;
try {
 stmt = (Statement) con.createStatement();
ResultSet rs = stmt
 .executeQuery("SELECT Longitude FROM city WHERE City_Name='"
   + city + "'");
rs.next();
lngt = rs.getFloat("Longitude");
} catch (SQLException e) {
 System.out.println("Error - Unable to get longitude of " + city
 + " :" + e);
}
return lngt;
 }

public float getLatitude_City(String city) {
connectToDB();
float latt = 0;
try {
stmt = (Statement) con.createStatement();
ResultSet rs = stmt
 .executeQuery("SELECT Latitude FROM city WHERE City_Name='"
   + city + "'");
  rs.next();
 latt = rs.getFloat("Latitude");
   } catch (SQLException e) {
   System.out.println("Error - Unable to get latitude of " + city
   + " :" + e);
   }
   return latt;
   }

   public float getLongitude_Im_Place(String place) {
  connectToDB();
float lngt = 0;
 try {
   stmt = (Statement) con.createStatement();
   ResultSet rs = stmt
   .executeQuery("SELECT Longitude FROM important_places WHERE Place_Name='"
   + place + "'");
   rs.next();
 lngt = rs.getFloat("Longitude");
 } catch (SQLException e) {
  System.out.println("Error - Unable to get longitude of " + place
 + " :" + e);
  }
 return lngt;
 }

  public float getLatitude_Im_Place(String place) {
  connectToDB();
  float latt = 0;
  try {
  stmt = (Statement) con.createStatement();
  ResultSet rs = stmt
 .executeQuery("SELECT Latitude FROM important_places WHERE Place_Name='"
   + place + "'");
  rs.next();
  latt = rs.getFloat("Latitude");
  } catch (SQLException e) {
  System.out.println("Error - Unable to get latitude of " + place
 + " :" + e);
  }
  return latt;
  }

 public String getCategory_Im_Place(String place) {
  connectToDB();
  String cat = "";
  try {
  stmt = (Statement) con.createStatement();
  ResultSet rs = stmt
 .executeQuery("SELECT Category FROM important_places WHERE Place_Name='"
   + place + "'");
  rs.next();
  cat = rs.getString("Category");
   } catch (SQLException e) {
  System.out.println("Error - Unable to get  Category of " + place
 + " :" + e);
  }
 return cat;
 }

 public String getDescription_Im_Place(String place) {
 connectToDB();
 String des = "";
 try {
  stmt = (Statement) con.createStatement();
  ResultSet rs = stmt
 .executeQuery("SELECT Description FROM important_places WHERE Place_Name='"
   + place + "'");
 rs.next();
 des = rs.getString("Description");
 } catch (SQLException e) {
System.out.println("Error - Unable to get Description of " + place
 + " :" + e);
}
return des;
}
}

Dis是我的android应用程序编码：

主.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
    android:id="@+id/txtCityLongitude"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello" />
<TextView
    android:id="@+id/txtCityLatitude"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello" />
<TextView
    android:id="@+id/txtIMLon"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello" />
<TextView
    android:id="@+id/txtIMLat"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello" />
<TextView
    android:id="@+id/txtIMCat"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello" />
<TextView
    android:id="@+id/txtIMDes"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello" />

 </LinearLayout>

AndroidManifest.xml 文件是

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.web.frontend.calculator"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.INTERNET" />
<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
    <activity
        android:name=".AndroidFrontendActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    </application>

 </manifest>

Dis 是我的 AndroidFrontendActivity.java 文件：

package org.web.frontend.calculator;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class AndroidFrontendActivity extends Activity {

private String METHOD_NAME = "";
// our webservice method name
private String NAMESPACE = "http://ws.travel_ceylon.web.org";
// Here package name in webservice with reverse order.
private String SOAP_ACTION = NAMESPACE + METHOD_NAME;
// NAMESPACE + method name
private static final String URL = "http://10.0.0.55:8085/Travel_Ceylon_Web_Service  /services/Travel_Ceylon_Web_Service?wsdl";

// you must use ipaddress here, don’t use Hostname or localhost

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    String city = "Matara";
    String im = "Galle Face";

    METHOD_NAME = "getLongitude_City";
    try {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("city", city);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        Object result = envelope.getResponse();
        ((TextView) findViewById(R.id.txtCityLongitude)).setText(city
                + " Longitude is : " + result.toString());

    } catch (Exception E) {
        E.printStackTrace();
        ((TextView) findViewById(R.id.txtCityLongitude)).setText("ERROR:"
                + E.getClass().getName() + ":" + E.getMessage());
    }
    METHOD_NAME = "getLatitude_City";
    try {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("city", city);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        Object result = envelope.getResponse();
        ((TextView) findViewById(R.id.txtCityLatitude)).setText(city
                + " Latitude : " + result.toString());

    } catch (Exception E) {
        E.printStackTrace();
        ((TextView) findViewById(R.id.txtCityLatitude)).setText("ERROR:"
                + E.getClass().getName() + ":" + E.getMessage());
    }

    METHOD_NAME = "getLongitude_Im_Place";
    try {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("place", im);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        Object result = envelope.getResponse();
        ((TextView) findViewById(R.id.txtIMLon)).setText(im
                + " Longitude : " + result.toString());

    } catch (Exception E) {
        E.printStackTrace();
        ((TextView) findViewById(R.id.txtIMLon)).setText("ERROR:"
                + E.getClass().getName() + ":" + E.getMessage());
    }

    METHOD_NAME = "getLatitude_Im_Place";
    try {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("place", im);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        Object result = envelope.getResponse();
        ((TextView) findViewById(R.id.txtIMLat)).setText(im
                + " Latitude : " + result.toString());

    } catch (Exception E) {
        E.printStackTrace();
        ((TextView) findViewById(R.id.txtIMLat)).setText("ERROR:"
                + E.getClass().getName() + ":" + E.getMessage());
    }

    METHOD_NAME = "getCategory_Im_Place";
    try {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("place", im);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        Object result = envelope.getResponse();
        ((TextView) findViewById(R.id.txtIMCat)).setText(im
                + " Category : " + result.toString());

    } catch (Exception E) {
        E.printStackTrace();
        ((TextView) findViewById(R.id.txtIMCat)).setText("ERROR:"
                + E.getClass().getName() + ":" + E.getMessage());
    }

    METHOD_NAME = "getDescription_Im_Place";
    try {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("place", im);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.
4

2 回答 2

2

将 Connector/J JAR 文件放入 Tomcat 的lib目录（如果您使用容器提供的数据源）或 webapp 的WEB-INF/lib目录（如果您的 webapp 正在管理自己的所有数据库连接。

请注意，这与 Android 无关。

于 2012-06-15T21:12:44.347 回答
0

如果你像这样添加库（项目-->构建路径-->配置构建路径-->添加外部jar-->添加mysql-connector-java-3.0.17.jar）。它只是在编译时考虑，但在导出或运行时它不会与项目一起导出，因此只需将此文件添加到此文件中project_folder\WebContent\WEB-INF\lib，就像 Christopher Schultz 手动所说的那样，它将起作用。

于 2012-06-16T05:59:01.503 回答