iphone ios 用xcode4.2开发 访问web service的功能

1。后台利用 cxf 构建一个web service服务。

• HelloWorld.java
  

 /**
  *
  */
 package com.alcor.jws.test;

 import javax.jws.WebMethod;
 import javax.jws.WebService;

 import org.apache.cxf.feature.Features;

 /**
  * @author 徐泽宇(roamer)
  *
  *         2010-7-10
  */
 @WebService
 @Features(features = "org.apache.cxf.feature.LoggingFeature")
 public interface HelloWorld {

     @WebMethod
     String sayHi(String text);
     @WebMethod

     boolean userLogon(String username,String userpasswd);
 }

• HelloWorldImpl.java

 /**
  *
  */
 package com.alcor.jws.test;

 import org.apache.cxf.feature.Features;
 import org.apache.log4j.Logger;

 import javax.jws.WebMethod;
 import javax.jws.WebService;


 /**
  * @author 徐泽宇(roamer)
  *
  * 2010-7-10
  */
 @WebService
 @Features(features = "org.apache.cxf.feature.LoggingFeature")
 public class HelloWorldImpl implements HelloWorld {
     /**
      * Logger for this class
      */
     private static final Logger logger = Logger.getLogger(HelloWorldImpl.class);


         @WebMethod
         public String sayHi(String text) {
         if (logger.isDebugEnabled()) {
             logger.debug("sayHi(String) - start"); //$NON-NLS-1$
         }

         String returnString = "Hello,你好： " + text;
         if (logger.isDebugEnabled()) {
             logger.debug("返回内容："+returnString);
             logger.debug("sayHi(String) - end"); //$NON-NLS-1$
         }
             return returnString;
         }

         @WebMethod
         public boolean userLogon(String username ,String userpasswd)
         {
             logger.debug("用户名是："+username+"口令是："+userpasswd);
             if (username.equalsIgnoreCase("admin"))
             {
                 return true;
             }else{
                 return false;
             }
         }
 }

• java 的web service 访问客户端

 /**
  *
  */
 package com.alcor.jws.test;

 import org.apache.cxf.interceptor.LoggingInInterceptor;
 import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;

 /**
  * @author 徐泽宇(roamer)
  *
  *         2010-7-10
  */
 public class Client {

     private Client() {
     }

     public static void main(String args[]) throws Exception {
         /*第一种方法，通过配置文件来实现  begin
         ApplicationContext ctx = new ClassPathXmlApplicationContext(    "META-INF/WebServiceClient.xml");

         HelloWorld client = (HelloWorld) ctx.getBean("client");

         String result = client.sayHi("Roamer");
         System.out.println(result);

         boolean logonResult = client.userLogon("roamer", "passwd");
         System.out.println(logonResult);

         logonResult = client.userLogon("admin", "passwd");
         System.out.println(logonResult);
         */

         JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
         factory.setAddress("http://localhost:8080/SampleWebService/webservice/HelloWorld");
         factory.setServiceClass(HelloWorld.class);
         factory.getInInterceptors().add(new LoggingInInterceptor());
         HelloWorld helloWorld = (HelloWorld) factory.create();
         boolean msg = helloWorld.userLogon("admin","World");
         System.out.println(msg);
     }
 }

2。iphone 客户端的编程

• LogonViewController.h

 //
 //  LogonViewController.h
 //  IManager
 //
 //  Created by remote roamer on 11-11-22.
 //  Copyright (c) 2011年 __MyCompanyName__. All rights reserved.
 //

 #import <UIKit/UIKit.h>


 @interface LogonViewController : UIViewController<NSXMLParserDelegate>
 {
     IBOutlet UITextField * userNameTextField;
     IBOutlet UITextField * userPasswordTextField;
     IBOutlet UIButton    * userLogonButton;
     IBOutlet UITextField * webServiceURL;
     NSXMLParser *xmlParser;
     BOOL logonResult;
     NSMutableString *soapResults;
 }

 @property(nonatomic,retain) IBOutlet UITextField * userNameTextField;
 @property(nonatomic,retain) IBOutlet UITextField * userPasswordTextField;
 @property(nonatomic,retain) IBOutlet UIButton    * userLogonButton;
 @property(nonatomic,retain) IBOutlet UITextField * webServiceURL;
 @property(nonatomic, retain) NSXMLParser *xmlParser;
 @property(nonatomic,retain) NSMutableString * soapResults;

 -(IBAction) logonButtonClick:(id)sender;
 @end

• LogonViewController.m

   //
   //  LogonViewController.m
   //  IManager
   //
   //  Created by remote roamer on 11-11-22.
   //  Copyright (c) 2011年 __MyCompanyName__. All rights reserved.
   //
  
   #import "LogonViewController.h"
  
  
   @implementation LogonViewController
  
   @synthesize userNameTextField;
   @synthesize userPasswordTextField;
   @synthesize userLogonButton;
   @synthesize webServiceURL;
   @synthesize xmlParser;
   @synthesize soapResults;
  
  
   -(IBAction) logonButtonClick:(id)sender
   {
       logonResult = false;
       NSString *soapMessage = [NSString stringWithFormat:
                                @"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
                                "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
                                "<soap:Body>\n"
                                "<ns1:userLogon xmlns:ns1=\"http://localhost:8080/SampleWebService/webservice/HelloWorld/\">"
                                "<arg0>%@</arg0>"
                                "<arg1>%@</arg1>"
                                "</ns1:userLogon>"
                                "</soap:Body>\n"
                                "</soap:Envelope>",self.userNameTextField.text,self.userPasswordTextField.text];
       NSLog(@"调用webserivce的字符串是:%@",soapMessage);
       //请求发送到的路径
       NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];
       NSURL *url = [NSURL URLWithString:@"http://localhost:8080/SampleWebService/webservice/HelloWorld/"];
       NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
  
        //以下对请求信息添加属性前四句是必有的，
       [urlRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
       [urlRequest addValue: @"http://localhost:8080/SampleWebService/webservice/HelloWorld" forHTTPHeaderField:@"SOAPAction"];
       [urlRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
       [urlRequest setHTTPMethod:@"POST"];
       [urlRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
  
  
       //请求
       NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:urlRequest delegate:self];
       theConnection = nil;
  
   }
  
   //如果调用有错误，则出现此信息
   -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
   {
       NSLog(@"ERROR with theConenction");
       UIAlertView * alert =
           [[UIAlertView alloc]
                initWithTitle:@"提示"
                message:[error description]
                delegate:self
                cancelButtonTitle:nil
                otherButtonTitles:@"OK", nil];
       [alert show];
   }
  
   //调用成功，获得soap信息
   -(void) connection:(NSURLConnection *) connection didReceiveData:(NSData *)responseData
   {
       NSString * returnSoapXML = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
       NSLog(@"返回的soap信息是：%@",returnSoapXML);
       //开始解析xml
       xmlParser = [[NSXMLParser alloc] initWithData: responseData];
       [xmlParser setDelegate:self];
       [xmlParser setShouldResolveExternalEntities: YES];
       [xmlParser parse];
       if(logonResult){
           UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"登录成功" message:returnSoapXML delegate:nil cancelButtonTitle:@"ok" otherButtonTitles: nil];
           [alert show];
       }
  
   }
  
   //如果soap的返回字符串比较多。需要实现以下这个方法，配合 didReceiveData 方法来正确的接受到所有的soap字符串
   //原因是：如果soap的返回字符串比较多。didReceiveData 这个方法会多次被调用。如果把soap解析的功能直接写在didReceiveData这个方法里面。会出现错误。这个时候，就需要 和connectionDidFinishLoading 联用。实现思路是：定义一个类变量NSMutableString * returnSoapXML;用于存放返回的soap字符串。
   //一旦有返回内容，获得soap信息,追加到结果字符串中
   //-(void) connection:(NSURLConnection *) connection didReceiveData:(NSData *)responseData
   //{
   //    [returnSoapXML appendString:[[NSMutableString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]];
   //}
   //最后在connectionDidFinishLoading 方法中实现，对完整的soap字符串的业务处理
  
   //数据全部接受成功以后调用
   /*
   - (void)connectionDidFinishLoading:(NSURLConnection *)connection
   {
       NSLog(@"从远程ws中调用获得客户简单信息的调用成功！");
       NSLog(@"返回的soap信息是：%@",returnSoapXML);
       //从soap 信息中解析出CusotmerInfo对象数组，并且保存到数据库中
       NSLog(@"开始保存ws返回的内容到本地数据库");
       [[[SoapRtnJsonParser alloc] init] parse2CustomersInfo:[returnSoapXML dataUsingEncoding:NSUTF8StringEncoding]];
   }
   */
  
   -(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
   {
  
       NSLog(@"返回的soap内容中，return值是： %@",string);
       if ([string isEqualToString:@"true"])
       {
           logonResult = YES;
       }else{
           logonResult = NO;
       }
   }
  
  
  
  
  
   - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
   {
       self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
       if (self) {
           // Custom initialization
       }
       return self;
   }
  
   - (void)didReceiveMemoryWarning
   {
       // Releases the view if it doesn't have a superview.
       [super didReceiveMemoryWarning];
  
       // Release any cached data, images, etc that aren't in use.
   }
  
   #pragma mark - View lifecycle
  
   - (void)viewDidLoad
   {
       [super viewDidLoad];
       // Do any additional setup after loading the view from its nib.
   }
  
   - (void)viewDidUnload
   {
       [super viewDidUnload];
       // Release any retained subviews of the main view.
       // e.g. self.myOutlet = nil;
   }
  
   - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
   {
       // Return YES for supported orientations
       return (interfaceOrientation == UIInterfaceOrientationPortrait);
   }
  
   @end

  
  

相关文章 ：

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其中要注意的几点。

•  <ns1:userLogon xmlns:ns1=\"http://localhost:8080/SampleWebService/webservice/HelloWorld/\">"
                                "<arg0>%@</arg0>"
                                "<arg1>%@</arg1>"
                                "</ns1:userLogon>"

  
  中web service 中的 userLogon方法的调用 要用ns1来引用。

• 传递的参数 不能和 webservice的变量名来写。而只能写成 arg0 和 arg1 这种方式。我查阅其他网上资料，都是写成<username>和<userpasswd>这种element的形式。但是在我的这个演示中，如果写成这种方式。后台会无法获得传入的变量。而用arg0 这种方式是可以传入。我不清楚是否是和 java cxf的webservice搭建环境和版本有关。

注意:如果后台的WebService是.net开发的，调用的程序略有不同：

例如 后台的ws服务链接是 ：http://10.100.111.231:9000/MobileService.asmx

那么访问这个url，会返回如下内容：

这个页面提示了SOAP 1.1 和 SOAP 1.2 的调用的内容

 SOAP 1.1

 The following is a sample SOAP 1.1 request and response. The placeholders shown need to be replaced with actual values.

  POST /MobileService.asmx HTTP/1.1
 Host: 10.100.111.231
 Content-Type: text/xml; charset=utf-8
 Content-Length: length
 SOAPAction: "http://tempuri.org/Logon"

 <?xml version="1.0" encoding="utf-8"?>
 <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Body>
     <Logon xmlns="http://tempuri.org/">
       <userName>string</userName>
       <password>string</password>
     </Logon>
   </soap:Body>
 </soap:Envelope>

 HTTP/1.1 200 OK
 Content-Type: text/xml; charset=utf-8
 Content-Length: length

 <?xml version="1.0" encoding="utf-8"?>
 <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Body>
     <LogonResponse xmlns="http://tempuri.org/">
       <LogonResult>string</LogonResult>
     </LogonResponse>
   </soap:Body>
 </soap:Envelope>

 SOAP 1.2

 The following is a sample SOAP 1.2 request and response. The placeholders shown need to be replaced with actual values.

 POST /MobileService.asmx HTTP/1.1
 Host: 10.100.111.231
 Content-Type: application/soap+xml; charset=utf-8
 Content-Length: length

 <?xml version="1.0" encoding="utf-8"?>
 <soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
   <soap12:Body>
     <Logon xmlns="http://tempuri.org/">
       <userName>string</userName>
       <password>string</password>
     </Logon>
   </soap12:Body>
 </soap12:Envelope>

 HTTP/1.1 200 OK
 Content-Type: application/soap+xml; charset=utf-8
 Content-Length: length

 <?xml version="1.0" encoding="utf-8"?>
 <soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
   <soap12:Body>
     <LogonResponse xmlns="http://tempuri.org/">
       <LogonResult>string</LogonResult>
     </LogonResponse>
   </soap12:Body>
 </soap12:Envelope>

那么，我们在objectiveC中代码应该写成

   static NSString * wsURL = @"http://10.100.111.231:9000/MobileService.asmx";

   NSString *soapMessage = [NSString stringWithFormat:
                             @"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
                             "<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
                             "<soap:Body>\n"
                             "<Logon xmlns=\"http://tempuri.org/\">"
                             "<userName>%@</userName>"
                             "<password>%@</password>"
                             "</Logon>"
                             "</soap:Body>\n"
                             "</soap:Envelope>",self.userNameTextField.text,self.userPasswordTextField.text];
    
    NSLog(@"调用webserivce的字符串是:%@",soapMessage);
    //请求发送到的路径
    NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];
    NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@",wsURL]];
    NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
    
     //以下对请求信息添加属性前四句是必有的，
    [urlRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [urlRequest addValue:@"http://tempuri.org/Logon" forHTTPHeaderField:@"SOAPAction"];
    NSLog(@"SOAPAction is %@ ",@"http://tempuri.org/Logon");
    [urlRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
    [urlRequest setHTTPMethod:@"POST"];
    [urlRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
    

    //请求
    NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:urlRequest delegate:self];
    theConnection = nil;

注意红色的代码，这个http://tempurl.org/Logon 是要和 .net中的代码一致。否则无法访问。