android开发调用web service

释放双眼,带上耳机,听听看~!

Web是基于SOAP协议的远程调用,通过Web可以将不同的操作系统平台、不同的语言和不同的技术集成在一起,下面是技术狗小编详细介绍android调用web service,感兴趣的小伙伴们可以参考一下。

详细介绍android调用web service
1.下载该夹包可以直接登录http://code.google.com/p/ksoap2-android/,现在该站点已经提供了直接的下载,只要点击下载链接就可以下载了;
我现在的是ksoap2-android-assembly-2.6.5-jar-with-dependencies.jar

2.好了,现在我们就可以进行新建项目来进行测试了,首先我们先建立java服务端,这里的一些前期准备我就不说了(比如与spring的整合等示例),
由于这里重点是android客户端,java服务器端就直接给代码了

Interface:(这里提供了两个方法,一个传递的是简单字符串,另一个传递的是符合对象+集合)


package xidian.sl.service.webService;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.Style;
import xidian.sl.service.impl.webService.StudentList;
@WebService
@SOAPBinding(style = Style.RPC)
public interface TestService {
public String getUser(@WebParam(name = "name")String name);
public StudentList getStuList();
}


implement:


package xidian.sl.service.impl.webService;
import java.util.ArrayList;
import java.util.List;
import javax.jws.WebService;
import xidian.sl.entity.Students;
import xidian.sl.service.webService.TestService;
@WebService(endpointInterface = "xidian.sl.service.webService.TestService")
public class TestServiceImpl implements TestService {
@Override
public String getUser(String name) {
System.out.println("客户端传递的名字为 = "+name);
return name;
}
@Override
public StudentList getStuList() {
System.out.println("该方法被调用");
List stuList = new ArrayList();
//第一个学生
Students stu1 = new Students();
stu1.setStuName("沈浪");
stu1.setStuNum("1006010054");
stu1.setStuSex("男");
stuList.add(stu1);
//第二个学生
Students stu2 = new Students();
stu2.setStuName("香香");
stu2.setStuNum("1006010043");
stu2.setStuSex("女");
stuList.add(stu2);
//将List集合封装成一个对象才能在webService中进行传递
StudentList studentList = new StudentList();
studentList.setStuList(stuList);
return studentList;
}
}

 

list的封装对象


package xidian.sl.service.impl.webService;
import java.util.List;
import xidian.sl.entity.Students;
public class StudentList {
private List stuList;
public List getStuList() {
return stuList;
}
public void setStuList(List stuList) {
this.stuList = stuList;
}
}

 

然后在srping的整合配置文件中进行如下配置即可(默认web.xml中已经进行配置)


xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jaxws="http://cxf.apache.org/jaxws"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://cxf.apache.org/jaxws
http://cxf.apache.org/schemas/jaxws.xsd">







implementor="#testServiceImpl"
address="/test" />

 

3.到此服务器端的已经建立完全,我们可以测试下:开启tomcat,然后在浏览器中输入http://localhost:8090/WebExam/services/test?wsdl可以查看wsdl

现在我们就可以开始建立android客户端了
新建一个项目后导入ksoap2-android-assembly-2.6.5-jar-with-dependencies.jar,这里要特别注意:导入包的方式不要选择项目右键—->build path—->
add external archives…,如果使用这种方式表面上好像是导入了包,但还是没有办法引用到,然后启动项目后一直会报:

我们还是选择和开发web一样的方式,就是在项目下新建lib或者libs文件夹,然后将jar直接复制到该文件夹中,IDE会帮助直接引入的:


这样就正确无误了,不再会报类无法引用到了
android中通过webservice调用服务器端其实还是很简单的,只要按部就班的按照下面步骤进行即可:
(1)创建HttpTransportSE对象,该对象用于调用WebService操作

HttpTransportSE ht = new HttpTransportSE(SERVICE_URL);

(2)创建SoapSerializationEnvelope对象

SoapSerializationEnvelope envelope = new SoapSerializationEnvelope
(SoapEnvelope.VER11);

(3)创建SoapObject对象,创建该对象时需要传入所要调用的Web Service的命名空间和WebService方法名

SoapObject request = new SoapObject(SERVICE_NS, methodName);

(4)如果有参数传给Web Service服务器端,调用SoapObject对象的addProperty(String name, Object value)方法来设置参数,该方法的name参数指定参数名
注意:参数名不一定要与服务端的方法中的参数名相同,只要对应顺序相同即可;value参数指定参数值

request.addProperty(“name”, “1006010054”);

(5)调用SoapSerializationEnvelope的setOutputSoapObject()方法,或者直接对bodyOut属性赋值,将前两步创建的SoapObject对象设为SoapSerializationEnvelope的传出SOAP消息体

envelope.bodyOut = request;

(6)调用对象的call()方法,并以SoapSerializationEnvelope作为参数调用远程的web service

ht.call(null, envelope);

(7)掉用完成后,访问SoapSerializationEnvelope对象的bodyIn属性,该属性返回一个SoapObject对象,该对象就代表Web service的返回消息,解析该对象,即可获得调用web service的返回值


SoapObject result = (SoapObject) envelope.bodyIn;
String name = result.getProperty(0).toString();


下面给书具体的实例:
mian.xml很简单就是两个编辑框:



android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" >


android:id="@+id/editText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" />

 

Activity:(该Activity调用了服务器端返回普通字符串的方法)


package xidian.sl.android.webservice;
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.EditText;
public class WebServiceSimpleDemo extends Activity{
final static String SERVICE_NS = "http://webService.service.sl.xidian/";
final static String SERVICE_URL = "http://192.168.1.103:8090/WebExam/services/test";
private EditText txt1;
private EditText txt2;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txt1 = (EditText) findViewById(R.id.editText1);
txt2 = (EditText) findViewById(R.id.editText2);
//调用的方法
String methodName = "getUser";
//创建httpTransportSE传输对象
HttpTransportSE ht = new HttpTransportSE(SERVICE_URL);
ht.debug = true;
//使用soap1.1协议创建Envelop对象
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
//实例化SoapObject对象
SoapObject request = new SoapObject(SERVICE_NS, methodName);
/**
* 设置参数,参数名不一定需要跟调用的服务器端的参数名相同,只需要对应的顺序相同即可
* */
request.addProperty("name", "1006010054");
//将SoapObject对象设置为SoapSerializationEnvelope对象的传出SOAP消息
envelope.bodyOut = request;
try{
//调用webService
ht.call(null, envelope);
//txt1.setText("看看"+envelope.getResponse());
if(envelope.getResponse() != null){
txt2.setText("有返回");
SoapObject result = (SoapObject) envelope.bodyIn;
String name = result.getProperty(0).toString();
txt1.setText("返回值 = "+name);
}else{
txt2.setText("无返回");
}
}catch (Exception e) {
e.printStackTrace();
}
}
}

 

在AndroidManifest.xml进行Activity的注册和并添加访问网络的权限



package="xidian.sl.android.webservice"
android:versionCode="1"
android:versionName="1.0" >

android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
android:name=".WebServiceSimpleDemo"
android:label="@string/app_name" >

 

运行后的结果如图所示:


下面我们来试着调用回传符合对象的方法:
activity:


package xidian.sl.android.webservice;
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.EditText;
public class WebServiceComplexDemo extends Activity{
final static String SERVICE_NS = "http://webService.service.sl.xidian/";
final static String SERVICE_URL = "http://192.168.1.103:8090/WebExam/services/test";
private EditText txt1;
private EditText txt2;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txt1 = (EditText) findViewById(R.id.editText1);
txt2 = (EditText) findViewById(R.id.editText2);
//调用的方法
String methodName = "getStuList";
//创建httpTransportSE传输对象
HttpTransportSE ht = new HttpTransportSE(SERVICE_URL);
ht.debug = true;
//使用soap1.1协议创建Envelop对象
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
//实例化SoapObject对象
SoapObject request = new SoapObject(SERVICE_NS, methodName);
/**
* 设置参数,参数名不一定需要跟调用的服务器端的参数名相同,只需要对应的顺序相同即可
* */
//request.addProperty("name", "1006010054");
//将SoapObject对象设置为SoapSerializationEnvelope对象的传出SOAP消息
envelope.bodyOut = request;
try{
//调用webService
ht.call(null, envelope);
txt2.setText("回传的值 :"+envelope.getResponse());
if(envelope.getResponse() != null){
SoapObject result = (SoapObject) envelope.bodyIn;
SoapObject soapChilds = (SoapObject)result.getProperty(0);
StringBuffer sb = new StringBuffer();
for(int i=0; i SoapObject soapChildsChilds = (SoapObject)soapChilds.getProperty(i);
sb.append("姓名["+i+"] = "+soapChildsChilds.getProperty(0).toString()+"n");
sb.append("学号["+i+"] = "+soapChildsChilds.getProperty(1).toString()+"n");
sb.append("性别["+i+"] = "+soapChildsChilds.getProperty(2).toString()+"n"+"n");
}
txt1.setText(sb.toString());
}else{
txt1.setText("无返回");
}
}catch (Exception e) {
e.printStackTrace();
}
}
} ();>

 

以上都是技术狗小编和大家分享详细介绍android调用web service,希望对大家的学习有一定的帮助!

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