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 ：

• 手把手教你做 iphone的soap应用

• 分享一个用Xcode4实现基于Webservice用户登录的iphone程序

  
  

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。

这个字符串的内容可以从asmx返回帮助界面来获得。