iPhone調用java的webService

Java代碼  

package com.xiva.service;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.context.ServiceContext;

public class LoginService {

    public boolean login(String userName, String password) {
        MessageContext context = MessageContext.getCurrentMessageContext();
        ServiceContext ctx = context.getServiceContext();
        if ("admin".equals(userName) && "123456".equals(password)) {
            ctx.setProperty("userName", userName);
            ctx.setProperty("password", password);
            ctx.setProperty("msg", "登陸成功");
            return true;
        }
        ctx.setProperty("msg", "登陸失敗");
        return false;
    }

    public String getLoginMessage() {
        MessageContext context = MessageContext.getCurrentMessageContext();
        ServiceContext ctx = context.getServiceContext();
        return ctx.getProperty("userName") + "#" + ctx.getProperty("msg");
    }

}

 

安裝前面提到的博客文章，發佈好這個Service.

 

下面就是在iPhone上的調用了。

 

先把代碼給出，我們再一個一個分析。

 

//
//  SOAPDemoViewController.h
//  SOAPDemo
//
//  Created by xiang xiva on 11-4-4.
//  Copyright 2011 __MyCompanyName__. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface SOAPDemoViewController : UIViewController <NSXMLParserDelegate>{

    IBOutlet UITextField *nameInput;
    IBOutlet UILabel *greeting;

    NSMutableData *webData;
    NSMutableString *soapResults;
    NSXMLParser *xmlParser;
    BOOL recordResults;
}

@property(nonatomic, retain) IBOutlet UITextField *nameInput;
@property(nonatomic, retain) IBOutlet UILabel *greeting;

@property(nonatomic, retain) NSMutableData *webData;
@property(nonatomic, retain) NSMutableString *soapResults;
@property(nonatomic, retain) NSXMLParser *xmlParser;

-(IBAction)buttonClick: (id) sender;
- (void)loginSOAP;
@end

 

 

//
//  SOAPDemoViewController.m
//  SOAPDemo
//
//  Created by xiang xiva on 11-4-4.
//  Copyright 2011 __MyCompanyName__. All rights reserved.
//

#import "SOAPDemoViewController.h"

@implementation SOAPDemoViewController

@synthesize greeting, nameInput, webData, soapResults, xmlParser;

/*
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}
*/

/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
}
*/


/*
- (void)viewDidLoad {
    [super viewDidLoad];
}
*/


/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/

- (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.
}

- (void)viewDidUnload {
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

-(IBAction)buttonClick:(id)sender
{
    greeting.text = @"Getting time …";
    [nameInput resignFirstResponder];
    [self loginSOAP];
}

#pragma mark -
#pragma mark webService Data

-(void)loginSOAP{
    recordResults = NO;
    //封裝soap請求消息
    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:encodingStyle=\"http://www.w3.org/2001/12/soap-encoding\">\n"
                             "<soap:Body>\n"
                             "<login xmlns=\"http://service.xiva.com\">\n"
                             "<userName>admin"
                             "</userName>"
                             "<password>123456"
                             "</password>"
                             "</login>\n"
                             "</soap:Body>\n"
                             "</soap:Envelope>\n"
                             ];
    NSLog(@"%a",soapMessage);
    //請求發送到的路徑
    NSURL *url = [NSURL URLWithString:@"http://192.168.0.64:8080/axis2/services/LoginService"];
    NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
    NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];

    //以下對請求信息添加屬性前四句是必有的，第五句是soap信息。
    [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [theRequest addValue: @"http://service.xiva.com/login" forHTTPHeaderField:@"SOAPAction"];

    [theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
    [theRequest setHTTPMethod:@"POST"];
    [theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

    //請求
     NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

    //如果連接已經建好，則初始化data
    if( theConnection )
    {
        webData = [[NSMutableData data] retain];
    }
    else
    {
        NSLog(@"theConnection is NULL");
    }
}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    [webData setLength: 0];
    NSLog(@"connection: didReceiveResponse:1");
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    [webData appendData:data];
    NSLog(@"connection: didReceiveData:%a", [webData length]);

}

//如果電腦沒有連接網絡，則出現此信息（不是網絡服務器不通）
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    NSLog(@"ERROR with theConenction");
    [connection release];
    [webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    NSLog(@"3 DONE. Received Bytes: %d", [webData length]);
    NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
    NSLog(@"%a",theXML);
    [theXML release];

    //重新加載xmlParser
    if( xmlParser )
    {
        [xmlParser release];
    }

    xmlParser = [[NSXMLParser alloc] initWithData: webData];
    [xmlParser setDelegate: self];
    [xmlParser setShouldResolveExternalEntities: YES];
    [xmlParser parse];

    [connection release];
    //[webData release];
}

-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *)qName
   attributes: (NSDictionary *)attributeDict
{
    NSLog(@"4 parser didStarElemen: namespaceURI: attributes:");

    if( [elementName isEqualToString:@"soap:Fault"])
    {
        if(!soapResults)
        {
            soapResults = [[NSMutableString alloc] init];
        }
        recordResults = YES;
    }

}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
    NSLog(@"5 parser: foundCharacters:");
    NSLog(@"recordResults:%@",string);
    if( recordResults )
    {
        [soapResults appendString: string];
    }

}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
    NSLog(@"6 parser: didEndElement:");

    if( [elementName isEqualToString:@"ns:return"])
    {
        NSLog(@"MSG");
    }

    if( [elementName isEqualToString:@"getOffesetUTCTimeResult"])
    {
        recordResults = FALSE;
        greeting.text = [[[NSString init]stringWithFormat:@"第%@時區的時間是: ",nameInput.text] stringByAppendingString:soapResults];
        [soapResults release];
        soapResults = nil;
        NSLog(@"hoursOffset result");
    }

}
- (void)parserDidStartDocument:(NSXMLParser *)parser{
    NSLog(@"-------------------start--------------");
}
- (void)parserDidEndDocument:(NSXMLParser *)parser{
    NSLog(@"-------------------end--------------");
}


- (void)dealloc {
    [super dealloc];
}

@end

 

在iPhone你直接創建一個視圖應用即可。

 

既然集成了NSXMLParserDelegate的協議，那麼我們便可使用這個協議上的方法。

 

關於connection的方法和xml的方法在此不用多說了；看看方法名大家就知道用途了。

 

 

第一個難點：

[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

這句話中的soapMessage的拼接。

 

 

 

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:encodingStyle=\"http://www.w3.org/2001/12/soap-encoding\">\n"
                             "<soap:Body>\n"
                             "<login xmlns=\"http://service.xiva.com\">\n"
                             "<userName>admin"
                             "</userName>"
                             "<password>123456"
                             "</password>"
                             "</login>\n"
                             "</soap:Body>\n"
                             "</soap:Envelope>\n"
                             ];

 

除了下面這段代碼，其他都是一些系統設置，

 

"<login xmlns=\"http://service.xiva.com\">\n"

"<userName>admin"

"</userName>"

"<password>123456"

"</password>"

"</login>\n"

上面代碼中第一行的login，代表我們要調用的方法；xmlns中存放的是命名空間，http://service.xiva.com

service.xiva.com就是java中我們包位置的顛倒。

第二，三行代碼我們給login傳遞一個叫userName的參數，值爲admin

第四，五行代碼我們給login傳遞一個叫password的參數，值爲123456

 

 

第二個難點：

 

 

NSURL *url = [NSURL URLWithString:@"http://192.168.0.64:8080/axis2/services/LoginService"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];
//以下對請求信息添加屬性前四句是必有的，第五句是soap信息。
[theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[theRequest addValue: @"http://service.xiva.com/login" forHTTPHeaderField:@"SOAPAction"];
[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPMethod:@"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

 

首先url，是指我們調用該方法的地址，

第二行初始化一個request給我們的connection調用，

第三行和第七行我們在設置內容的長度

第四行，是註釋

第五行，設置http內容的type

第六行，是設置我們soapAction；也就是我們webService調用的方法，命名空間/方法名

第八行設置http的發送方式，爲post。（不知道用get會怎麼樣？）

第九行設置整個Body的內容，也就是我們之前拼接的那個soapMessage。