ios--请求接口并解析xml
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工具类：
1、请求接口要用到的工具类：webservice
webservice.h
#import <Foundation/Foundation.h>#import "XMLParser.h"#import "WeiboSDK/WeiboSDK.h"@interface webservice : NSObject<MBProgressHUDDelegate>{ MBProgressHUD *HUD;}-(NSDictionary *)insertCatalogWithJsonForJson:(NSURL*)strurl send:(NSDictionary *)sendinfo;-(TreeNode *)insertCatalogWithJson:(NSURL*)strurl send:(NSDictionary *)sendinfo;-(TreeNode *)insertCatalogWithJsondata:(NSURL*)strurl send:(NSData *)sendinfo;-(TreeNode *)insertCatalogWithJsonmul:(NSURL*)strurl send:(NSMutableDictionary *)sendinfo ;-(void *)getxmldata:(TreeNode *)node receive:(NSMutableArray *)arrreceive result:(NSMutableArray *)resultarry;@property (strong, nonatomic) IBOutlet UIView *fatherview;@property (nonatomic) bool show;@property (nonatomic) bool errorconnect;@endwebservice.m
#import "webservice.h"#import "AppDelegate.h"@implementation webservice//傳送至web Service-(NSDictionary *)insertCatalogWithJsonForJson:(NSURL*)strurl send:(NSDictionary *)sendinfo { NSLog(@"strurl=%@,dic=%@",[strurl debugDescription],[sendinfo debugDescription]); NSError *error = NULL; //壓縮成NSData，這時的編碼會成UTF8格式 NSData *jsonData = [NSJSONSerialization dataWithJSONObject:sendinfo options:NSJSONWritingPrettyPrinted error:&error]; NSString *urlAsString = [[NSString alloc]initWithString: [strurl absoluteString]]; urlAsString = [urlAsString stringByAppendingString:@"?action=insert"]; NSURL *url = [NSURL URLWithString:urlAsString]; NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url]; [urlRequest setTimeoutInterval:50.0f]; [urlRequest setHTTPMethod:@"POST"]; //直接把NSData(這時的編碼為UTF8)做為傳送的內容 [urlRequest setHTTPBody:jsonData]; NSURLResponse *response = nil; NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error]; if ([data length] >0 && error == nil) { //获得到数据 NSString *html = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"html = %@",html); NSData *data1 = [html dataUsingEncoding:NSUTF8StringEncoding]; //NSLog(@"data1 = %@", [data1 debugDescription]); NSDictionary *dic=[NSJSONSerialization JSONObjectWithData:data1 options:kNilOptions error:&error]; NSMutableArray *arr=[dic mutableArrayValueForKey:@"jsonOK"]; return [arr objectAtIndex:0]; //return node; }else if ([data length] == 0 && error == nil) { NSLog(@"Nothing was downloaded."); } else if (error != nil) { NSLog(@"Error happened = %@", error); //if ([error code]==-1009) { [self errordo:[error localizedDescription]]; //} } return nil;}//傳送至web Service-(TreeNode *)insertCatalogWithJson:(NSURL*)strurl send:(NSDictionary *)sendinfo { NSError *error = NULL; //壓縮成NSData，這時的編碼會成UTF8格式 NSData *jsonData = [NSJSONSerialization dataWithJSONObject:sendinfo options:NSJSONWritingPrettyPrinted error:&error]; NSString *urlAsString = [[NSString alloc]initWithString: [strurl absoluteString]]; urlAsString = [urlAsString stringByAppendingString:@"?action=insert"]; NSURL *url = [NSURL URLWithString:urlAsString]; NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url]; [urlRequest setTimeoutInterval:50.0f]; [urlRequest setHTTPMethod:@"POST"]; //直接把NSData(這時的編碼為UTF8)做為傳送的內容 [urlRequest setHTTPBody:jsonData]; NSURLResponse *response = nil; NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error]; if ([data length] >0 && error == nil) { // 使用下面代码获取web服务器上的xml，并将xml转换成树： XMLParser *parser = [[XMLParser alloc] init]; // NSURL * url = [[NSURL alloc] initWithString:@"Login.xml"]; TreeNode *node = [parser parseXMLFromData:data]; //NSLog(@"node = %@", [node debugDescription]); return node; }else if ([data length] == 0 && error == nil) { NSLog(@"Nothing was downloaded."); } else if (error != nil) { NSLog(@"Error happened = %@", error); //if ([error code]==-1009) { [self errordo:[error localizedDescription]]; //} } return nil;}-(TreeNode *)insertCatalogWithJsonmul:(NSURL*)strurl send:(NSMutableDictionary *)sendinfo { NSError *error = NULL; //壓縮成NSData，這時的編碼會成UTF8格式 NSData *jsonData = [NSJSONSerialization dataWithJSONObject:sendinfo options:NSJSONWritingPrettyPrinted error:&error]; NSLog(@"%@",error); NSString *urlAsString = [[NSString alloc]initWithString: [strurl absoluteString]]; urlAsString = [urlAsString stringByAppendingString:@"?action=insert"]; NSURL *url = [NSURL URLWithString:urlAsString]; NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url]; [urlRequest setTimeoutInterval:30.0f]; [urlRequest setHTTPMethod:@"POST"]; //直接把NSData(這時的編碼為UTF8)做為傳送的內容 [urlRequest setHTTPBody:jsonData]; NSURLResponse *response = nil; NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error]; if ([data length] >0 && error == nil) { // 使用下面代码获取web服务器上的xml，并将xml转换成树： XMLParser *parser = [[XMLParser alloc] init]; // NSURL * url = [[NSURL alloc] initWithString:@"Login.xml"]; TreeNode *node = [parser parseXMLFromData:data]; return node; }else if ([data length] == 0 && error == nil) { NSLog(@"Nothing was downloaded."); } else if (error != nil) { NSLog(@"Error happened = %@", error); //if ([error code]==-1009) { [self errordo:[error localizedDescription]]; //} } return nil;}-(TreeNode *)insertCatalogWithJsondata:(NSURL*)strurl send:(NSData *)sendinfo { NSError *error = NULL; NSString *urlAsString = [[NSString alloc]initWithString: [strurl absoluteString]]; urlAsString = [urlAsString stringByAppendingString:@"&action=insert"]; NSURL *url = [NSURL URLWithString:urlAsString]; NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url]; [urlRequest setTimeoutInterval:20.0f]; [urlRequest setHTTPMethod:@"POST"]; //直接把NSData(這時的編碼為UTF8)做為傳送的內容 [urlRequest setHTTPBody:sendinfo]; NSURLResponse *response = nil; NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error]; if ([data length] >0 && error == nil) { // 使用下面代码获取web服务器上的xml，并将xml转换成树： XMLParser *parser = [[XMLParser alloc] init]; // NSURL * url = [[NSURL alloc] initWithString:@"Login.xml"]; TreeNode *node = [parser parseXMLFromData:data]; return node; }else if ([data length] == 0 && error == nil) { NSLog(@"Nothing was downloaded."); } else if (error != nil) { NSLog(@"Error happened = %@", error); //if ([error code]==-1009) { [self errordo:[error localizedDescription]]; //} } return nil;}-(void *)getxmldata:(TreeNode *) node receive:(NSMutableArray *)arrreceive result:(NSMutableArray *)resultarry{ // NSString *html = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]; // NSMutableArray *dataarry = [[NSMutableArray alloc] init]; // NSLog(@"HTML = %@", html); //获取xml中的登录结果： for(NSString *string in arrreceive) { NSRange range; range=[string rangeOfString:@"#"]; if (range.length ==0) { NSString * strkey=[node leafForKey:string]; if (strkey ==nil) { strkey = @""; } NSString * result = [[NSString alloc] initWithString:strkey]; // NSLog(@"result=%@",result); if ([result isEqual:nil]||[result isEqualToString:@""]) { continue; } [resultarry addObject:result]; } else { //类似xpath去取值： NSArray *array = [string componentsSeparatedByString:@"#"]; NSString * result = [[NSString alloc] initWithString:[node leafForKeys:array]]; // NSLog(@"result=%@",result); if ([result isEqual:nil]||[result isEqualToString:@""]) { continue; } [resultarry addObject:result]; } } //重新從WebService讀取資料 // [self wsLookingFun]; }- (void)errordo:(NSString *)content {// Do something usefull in here instead of sleeping ...//sleep(1); self.errorconnect=true; if (!self.show) { AppDelegate *appDelegate=[[UIApplication sharedApplication] delegate]; [appDelegate.crtabBarController performSelectorOnMainThread:@selector(errordo:) withObject:content waitUntilDone:YES]; } // UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"提示" message:content delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil]; // [alter show];}- (void)myTask {// Do something usefull in here instead of sleeping ...sleep(3);}@end2、xml解析要用到两个工具类：XMLParser和TreeNode
XMLParser.h
#import <CoreFoundation/CoreFoundation.h>#import "TreeNode.h"@interface XMLParser : NSObject{ NSMutableArray *stack;}+ (XMLParser *) sharedInstance;- (TreeNode *) parseXMLFromURL: (NSURL *) url;- (TreeNode *) parseXMLFromData: (NSData*) data;@endXMLParser.m
#import "XMLParser.h"@implementation XMLParserstatic XMLParser *sharedInstance = nil;// Use just one parser instance at any time+(XMLParser *) sharedInstance{ if(!sharedInstance) { sharedInstance = [[self alloc] init]; } return sharedInstance;}// Parser returns the tree root. You may have to go down one node to the real results- (TreeNode *) parse: (NSXMLParser *) parser{ stack = [NSMutableArray array]; TreeNode *root = [TreeNode treeNode]; root.parent = nil; root.leafvalue = nil; root.children = [NSMutableArray array]; [stack addObject:root]; [parser setDelegate:self]; [parser parse];// [parser release]; // pop down to real root TreeNode *realroot = [[root children] lastObject]; root.children = nil; root.parent = nil; root.leafvalue = nil; root.key = nil; realroot.parent = nil; return realroot;}- (TreeNode *)parseXMLFromURL: (NSURL *) url{ TreeNode *results;// NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSXMLParser *parser = [[NSXMLParser alloc] initWithContentsOfURL:url]; results = [self parse:parser];// [pool drain]; return results;}- (TreeNode *)parseXMLFromData: (NSData *) data{ TreeNode *results;// NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data]; results = [self parse:parser];// [pool drain]; return results;}// Descend to a new element- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ if (qName) elementName = qName; TreeNode *leaf = [TreeNode treeNode]; leaf.parent = [stack lastObject]; [(NSMutableArray *)[[stack lastObject] children] addObject:leaf]; leaf.key = [NSString stringWithString:elementName]; leaf.leafvalue = nil; leaf.children = [NSMutableArray array]; [stack addObject:leaf];}// Pop after finishing element- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{ [stack removeLastObject];}// Reached a leaf- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{ if (![[stack lastObject] leafvalue]) { [[stack lastObject] setLeafvalue:[NSString stringWithString:string]]; return; } [[stack lastObject] setLeafvalue:[NSString stringWithFormat:@"%@%@", [[stack lastObject] leafvalue], string]];}@endTreeNode.h
#import <CoreFoundation/CoreFoundation.h>@interface TreeNode : NSObject{ TreeNode *parent; NSMutableArray *children; NSString *key; NSString *leafvalue;}@property (nonatomic, retain) TreeNode *parent;@property (nonatomic, retain) NSMutableArray *children;@property (nonatomic, retain) NSString *key;@property (nonatomic, retain) NSString *leafvalue;@property (nonatomic, readonly) BOOL isLeaf;@property (nonatomic, readonly) BOOL hasLeafValue;@property (nonatomic, readonly) NSArray *keys;@property (nonatomic, readonly) NSArray *allKeys;@property (nonatomic, readonly) NSArray *uniqKeys;@property (nonatomic, readonly) NSArray *uniqAllKeys;@property (nonatomic, readonly) NSArray *leaves;@property (nonatomic, readonly) NSArray *allLeaves;@property (nonatomic, readonly) NSString *dump;+ (TreeNode *) treeNode;- (NSString *) dump;- (void) teardown;// Leaf Utils- (BOOL) isLeaf;- (BOOL) hasLeafValue;- (NSArray *) leaves;- (NSArray *) allLeaves;// Key Utils- (NSArray *) keys;- (NSArray *) allKeys;- (NSArray *) uniqKeys;- (NSArray *) uniqAllKeys;// Search Utils- (TreeNode *) objectForKey: (NSString *) aKey;- (NSString *) leafForKey: (NSString *) aKey;- (NSMutableArray *) objectsForKey: (NSString *) aKey;- (NSMutableArray *) leavesForKey: (NSString *) aKey;- (TreeNode *) objectForKeys: (NSArray *) keys;- (NSString *) leafForKeys: (NSArray *) keys;- (NSMutableArray *) childrenForKeys: (NSArray *) keys;// Convert Utils- (NSMutableDictionary *) dictionaryForChildren;@endTreeNode.m
#import "TreeNode.h"// String stripper utility macro#define STRIP(X) [X stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]@implementation TreeNode@synthesize parent;@synthesize children;@synthesize key;@synthesize leafvalue;#pragma mark Create and Initialize TreeNodes- (TreeNode *) init{ if (self = [super init]) { self.key = nil; self.leafvalue = nil; self.parent = nil; self.children = nil; } return self;}+ (TreeNode *) treeNode{ return [[self alloc] init];}#pragma mark TreeNode type routines- (BOOL) isLeaf{ return (self.children.count == 0);}- (BOOL) hasLeafValue{ return (self.leafvalue != nil);}#pragma mark TreeNode data recovery routines// Return an array of child keys. No recursion- (NSArray *) keys{ NSMutableArray *results = [NSMutableArray array]; for (TreeNode *node in self.children) [results addObject:node.key]; return results;}// Return an array of child keys with depth-first recursion.- (NSArray *) allKeys{ NSMutableArray *results = [NSMutableArray array]; for (TreeNode *node in self.children) { [results addObject:node.key]; [results addObjectsFromArray:node.allKeys]; } return results;}- (NSArray *) uniqArray: (NSArray *) anArray{ NSMutableArray *array = [NSMutableArray array]; for (id object in [anArray sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]) if (![[array lastObject] isEqualToString:object]) [array addObject:object]; return array;}// Return a sorted, uniq array of child keys. No recursion- (NSArray *) uniqKeys{ return [self uniqArray:[self keys]];}// Return a sorted, uniq array of child keys. With depth-first recursion- (NSArray *) uniqAllKeys{ return [self uniqArray:[self allKeys]];}// Return an array of child leaves. No recursion- (NSArray *) leaves{ NSMutableArray *results = [NSMutableArray array]; for (TreeNode *node in self.children) if (node.leafvalue) [results addObject:node.leafvalue]; return results;}// Return an array of child leaves with depth-first recursion.- (NSArray *) allLeaves{ NSMutableArray *results = [NSMutableArray array]; for (TreeNode *node in self.children) { if (node.leafvalue) [results addObject:node.leafvalue]; [results addObjectsFromArray:node.allLeaves]; } return results;}#pragma mark TreeNode search and retrieve routines// Return the first child that matches the key, searching recursively breadth first- (TreeNode *) objectForKey: (NSString *) aKey{ TreeNode *result = nil; for (TreeNode *node in self.children) if ([node.key isEqualToString: aKey]) { result = node; break; } if (result) return result; for (TreeNode *node in self.children) { result = [node objectForKey:aKey]; if (result) break; } return result;}// Return the first leaf whose key is a match, searching recursively breadth first- (NSString *) leafForKey: (NSString *) aKey{ TreeNode *node = [self objectForKey:aKey]; return node.leafvalue;}// Return all children that match the key, including recursive depth first search.- (NSMutableArray *) objectsForKey: (NSString *) aKey{ NSMutableArray *result = [NSMutableArray array]; for (TreeNode *node in self.children) { if ([node.key isEqualToString: aKey]) [result addObject:node]; [result addObjectsFromArray:[node objectsForKey:aKey]]; } return result;}// Return all leaves that match the key, including recursive depth first search.- (NSMutableArray *) leavesForKey: (NSString *) aKey{ NSMutableArray *result = [NSMutableArray array]; for (TreeNode *node in [self objectsForKey:aKey]) if (node.leafvalue) [result addObject:node.leafvalue]; return result;}// Follow a key path that matches each first found branch, returning object- (TreeNode *) objectForKeys: (NSArray *) keys{ if ([keys count] == 0) return self; NSMutableArray *nextArray = [NSMutableArray arrayWithArray:keys]; [nextArray removeObjectAtIndex:0]; for (TreeNode *node in self.children) { if ([node.key isEqualToString:[keys objectAtIndex:0]]) return [node objectForKeys:nextArray]; } return nil;}//获取指定节点下的所有子节点- (NSMutableArray *) childrenForKeys: (NSArray *) keys{ TreeNode *fathernode = [self objectForKeys:keys]; NSMutableArray *result = [NSMutableArray array]; for (TreeNode *node in fathernode.children) { NSMutableDictionary * dictionary = [[NSMutableDictionary alloc] init]; dictionary = [node dictionaryForChildren]; [result addObject:dictionary]; // [result addObjectsFromArray:[node childrenForKeys:keys]]; } return result;}// Follow a key path that matches each first found branch, returning leaf- (NSString *) leafForKeys: (NSArray *) keys{ TreeNode *node = [self objectForKeys:keys]; return node.leafvalue;}#pragma mark output utilities// Print out the tree- (void) dumpAtIndent: (int) indent into:(NSMutableString *) outstring{ for (int i = 0; i < indent; i++) [outstring appendString:@"--"]; [outstring appendFormat:@"[%2d] Key: %@ ", indent, key]; if (self.leafvalue) [outstring appendFormat:@"(%@)", STRIP(self.leafvalue)]; [outstring appendString:@"\n"]; for (TreeNode *node in self.children) [node dumpAtIndent:indent + 1 into: outstring];}- (NSString *) dump{ NSMutableString *outstring = [[NSMutableString alloc] init]; [self dumpAtIndent:0 into:outstring]; return outstring ;}#pragma mark conversion utilities// When you're sure you're the parent of all leaves, transform to a dictionary- (NSMutableDictionary *) dictionaryForChildren{ NSMutableDictionary *results = [NSMutableDictionary dictionary]; for (TreeNode *node in self.children) if (node.hasLeafValue) [results setObject:node.leafvalue forKey:node.key]; return results;}#pragma mark invocation forwarding// Invocation Forwarding lets node act like array- (id)forwardingTargetForSelector:(SEL)sel{ if ([self.children respondsToSelector:sel]) return self.children; return nil;}// Extend selector compliance- (BOOL)respondsToSelector:(SEL)aSelector{ if ( [super respondsToSelector:aSelector] ) return YES; if ([self.children respondsToSelector:aSelector]) return YES; return NO;}// Allow posing as NSArray class for children- (BOOL)isKindOfClass:(Class)aClass{ if (aClass == [TreeNode class]) return YES; if ([super isKindOfClass:aClass]) return YES; if ([self.children isKindOfClass:aClass]) return YES; return NO;}#pragma mark cleanup- (void) teardown{ for (TreeNode *node in [self.children copy]) [node teardown]; [self.parent.children removeObject:self]; self.parent = nil;}- (void) dealloc{ self.parent = nil; self.children = nil; self.key = nil; self.leafvalue = nil; }@end调用接口获取xml数据并解析xml：
anticounterfeitSections = [[NSMutableArray alloc] initWithObjects:nil];//用来与UITableViewSection对应 [anticounterfeitSections addObject:@""]; webservice *service= [[webservice alloc] init]; NSDictionary *info = [NSDictionary dictionaryWithObjectsAndKeys: value,@"key", nil];//请求参数 NSURL *strurl = [NSURL URLWithString:urlString];//请求网址 NSURL类型 //完成Json格式後，進行新增 TreeNode *refdata= [[TreeNode alloc] init]; refdata=[service insertCatalogWithJson:strurl send:info];//将请求到的数据以TreeNode格式存放到refdata service=nil;//请求完毕后，释放webservice类 //[NSThread sleepForTimeInterval:3]; NSMutableDictionary * rootdic = [refdata dictionaryForChildren];//根目录下面的节点集 NSLog(@"info=%@",[rootdic objectForKey:@"Info"]);//打印该节点集里面的名称为Info的节点的value NSMutableArray *test = [[NSMutableArray alloc] initWithObjects: @"items", nil];//定义一个名称为items的节点集 //获取地址列表 NSMutableArray * test1 = [refdata childrenForKeys:test];//从该节点集里面读取到名称为items的节点集 refdata=nil;//释放 NSMutableArray *demaxiyaHeros = [[NSMutableArray alloc] init]; NSLog(@"%@",test1); if ([[rootdic objectForKey:@"isSuccess"] isEqualToString:@"1"]) { for (NSMutableDictionary *dic in test1) { //to-do } anticounterfeitData = [[NSMutableArray alloc] initWithObjects:demaxiyaHeros, nil];//将items里面的每个item解析并放入NSMutableArray类型中 } 0 0
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