本次解析使用的由Google提供的一个开源插件：GDataXmlNode对xml文件的解析。
导入GDataXmlNode文件和配置Xcode :http://blog.csdn.net/hmt20130412/article/details/24042499
题目：解析如下Xml文件，通过输入城市中文名，获取对应城市的首字母。 例如：输入常德 输出c
xml文件：
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> 3 <plist version="1.0"> 4 <dict> 5 <key>a</key> 6 <array> 7 <string>安吉</string> 8 <string>安庆</string> 9 <string>鞍山</string> 10 <string>澳门</string> 11 </array> 12 <key>b</key> 13 <array> 14 <string>保定</string> 15 <string>宝鸡</string> 16 <string>包头</string> 17 <string>北海</string> 18 <string>北京</string> 19 <string>蚌埠</string> 20 <string>滨州</string> 21 </array> 22 <key>c</key> 23 <array> 24 <string>沧州</string> 25 <string>长春</string> 26 <string>常德</string> 27 <string>长乐</string> 28 <string>长沙</string> 29 <string>常熟</string> 30 <string>常州</string> 31 <string>潮阳</string> 32 <string>潮州</string> 33 <string>承德</string> 34 <string>成都</string> 35 <string>郴州</string> 36 <string>重庆</string> 37 <string>滁州</string> 38 <string>慈禧</string> 39 <string>从化</string> 40 </array> 41 <key>d</key> 42 <array> 43 <string>大连</string> 44 <string>丹东</string> 45 <string>大庆</string> 46 <string>大同</string> 47 <string>德阳</string> 48 <string>德州</string> 49 <string>东莞</string> 50 <string>东营</string> 51 </array> 52 <key>e</key> 53 <array> 54 <string>鄂尔多斯</string> 55 <string>鄂州</string> 56 </array> 57 <key>f</key> 58 <array> 59 <string>奉化</string> 60 <string>佛山</string> 61 <string>抚顺</string> 62 <string>阜阳</string> 63 <string>福州</string> 64 </array> 65 <key>g</key> 66 <array> 67 <string>赣州</string> 68 <string>广州</string> 69 <string>桂林</string> 70 <string>贵阳</string> 71 </array> 72 <key>h</key> 73 <array> 74 <string>哈尔滨</string> 75 <string>海口</string> 76 <string>海拉尔</string> 77 <string>邯郸</string> 78 <string>杭州</string> 79 <string>合肥</string> 80 <string>鹤岗</string> 81 <string>衡阳</string> 82 <string>鹤山</string> 83 <string>河源</string> 84 <string>花都</string> 85 <string>淮安</string> 86 <string>淮北</string> 87 <string>淮南</string> 88 <string>黄石</string> 89 <string>呼和浩特</string> 90 <string>惠东</string> 91 <string>惠阳</string> 92 <string>惠州</string> 93 <string>葫芦岛</string> 94 <string>湖州</string> 95 <string>怀化</string> 96 </array> 97 <key>j</key> 98 <array> 99 <string>江都</string> 100 <string>江门</string> 101 <string>姜堰</string> 102 <string>江阴</string> 103 <string>焦作</string> 104 <string>嘉兴</string> 105 <string>揭阳</string> 106 <string>吉林</string> 107 <string>济南</string> 108 <string>荆门</string> 109 <string>荆沙</string> 110 <string>金华</string> 111 <string>济宁</string> 112 <string>晋江</string> 113 <string>晋中</string> 114 <string>锦州</string> 115 <string>九江</string> 116 </array> 117 <key>k</key> 118 <array> 119 <string>开封</string> 120 <string>开平</string> 121 <string>昆明</string> 122 <string>昆山</string> 123 </array> 124 <key>l</key> 125 <array> 126 <string>莱芜</string> 127 <string>莱西</string> 128 <string>廊坊</string> 129 <string>兰州</string> 130 <string>连云港</string> 131 <string>聊城</string> 132 <string>列东</string> 133 <string>醴陵</string> 134 <string>临汾</string> 135 <string>临沂</string> 136 <string>丽水</string> 137 <string>浏阳</string> 138 <string>柳州</string> 139 <string>龙岩</string> 140 <string>六安</string> 141 <string>陆丰</string> 142 <string>漯河</string> 143 <string>洛阳</string> 144 <string>泸州</string> 145 </array> 146 <key>m</key> 147 <array> 148 <string>茂名</string> 149 <string>梅州</string> 150 <string>绵阳</string> 151 </array> 152 <key>n</key> 153 <array> 154 <string>南昌</string> 155 <string>南充</string> 156 <string>南京</string> 157 <string>南宁</string> 158 <string>南平</string> 159 <string>南通</string> 160 <string>南阳</string> 161 <string>内江</string> 162 <string>宁波</string> 163 </array> 164 <key>p</key> 165 <array> 166 <string>盘锦</string> 167 <string>番禺</string> 168 <string>平顶山</string> 169 <string>莆田</string> 170 <string>濮阳</string> 171 </array> 172 <key>q</key> 173 <array> 174 <string>启东</string> 175 <string>青岛</string> 176 <string>清远</string> 177 <string>秦皇岛</string> 178 <string>钦州</string> 179 <string>琼海</string> 180 <string>齐齐哈尔</string> 181 <string>全国</string> 182 <string>泉州</string> 183 <string>衢州</string> 184 </array> 185 <key>r</key> 186 <array> 187 <string>日照</string> 188 </array> 189 <key>s</key> 190 <array> 191 <string>三河</string> 192 <string>三亚</string> 193 <string>上海</string> 194 <string>上虞</string> 195 <string>汕头</string> 196 <string>汕尾</string> 197 <string>韶关</string> 198 <string>绍兴</string> 199 <string>邵阳</string> 200 <string>沈阳</string> 201 <string>深圳</string> 202 <string>石家庄</string> 203 <string>石狮</string> 204 <string>十堰</string> 205 <string>寿光</string> 206 <string>四会</string> 207 <string>随州</string> 208 <string>苏州</string> 209 </array> 210 <key>t</key> 211 <array> 212 <string>泰安</string> 213 <string>台山</string> 214 <string>太原</string> 215 <string>泰州</string> 216 <string>台州</string> 217 <string>塘沽</string> 218 <string>唐山</string> 219 <string>天津</string> 220 <string>铜陵</string> 221 </array> 222 <key>w</key> 223 <array> 224 <string>潍坊</string> 225 <string>威海</string> 226 <string>渭南</string> 227 <string>温州</string> 228 <string>武汉</string> 229 <string>芜湖</string> 230 <string>吴江</string> 231 <string>乌鲁木齐</string> 232 <string>无锡</string> 233 <string>梧州</string> 234 </array> 235 <key>x</key> 236 <array> 237 <string>厦门</string> 238 <string>西安</string> 239 <string>襄樊</string> 240 <string>香港</string> 241 <string>湘潭</string> 242 <string>咸宁</string> 243 <string>咸阳</string> 244 <string>兴宁</string> 245 <string>邢台</string> 246 <string>西宁</string> 247 <string>新乡</string> 248 <string>宣城</string> 249 <string>许昌</string> 250 <string>徐州</string> 251 </array> 252 <key>y</key> 253 <array> 254 <string>盐城</string> 255 <string>阳江</string> 256 <string>阳泉</string> 257 <string>阳朔</string> 258 <string>扬州</string> 259 <string>烟台</string> 260 <string>宜昌</string> 261 <string>银川</string> 262 <string>英德</string> 263 <string>义务</string> 264 <string>宜兴</string> 265 <string>仪征</string> 266 <string>永康</string> 267 <string>岳阳</string> 268 <string>云浮</string> 269 <string>玉林</string> 270 <string>玉溪</string> 271 <string>余姚</string> 272 </array> 273 <key>z</key> 274 <array> 275 <string>湛江</string> 276 <string>肇庆</string> 277 <string>招远</string> 278 <string>郑州</string> 279 <string>镇江</string> 280 <string>中山</string> 281 <string>周口</string> 282 <string>舟山</string> 283 <string>珠海</string> 284 <string>诸暨</string> 285 <string>株洲</string> 286 <string>淄博</string> 287 <string>自贡</string> 288 </array> 289 </dict> 290 </plist>
新建了一个类Xml解析类：ParseAlphAndCityName.h
1 #import <Foundation/Foundation.h> 2 3 @interface ParseAlphAndCityName : NSObject 4 { 5 NSMutableDictionary *_alphAndCityNameList; 6 } 7 8 @property (retain,nonatomic)NSMutableDictionary *alphAndCityNameList; 9 10 11 - (id)init; 12 13 14 - (void)parseXml:(NSString *)xmlFilePath; 15 16 17 + (void)test:(NSString *)xmlFilePath; 18 19 @end
ParseAlphAndCityName.m
最主要的是parseXml:(NSString *)xmlFilePath;方法。利用了主流的对xml的解析方法。
不多说：看代码，已经注释的很清楚了。
1 #import "ParseAlphAndCityName.h" 2 #import "GDataXMLNode.h" 3 4 5 @implementation ParseAlphAndCityName 6 7 -(id)init 8 { 9 if (self = [super init]) { 10 self->_alphAndCityNameList = [[NSMutableDictionary alloc] init]; 11 } 12 13 return self; 14 } 15 16 17 - (void)parseXml:(NSString *)xmlFilePath 18 { 19 //将xml文件读取称二进制对象 20 NSData *xmlData = [[NSData alloc] initWithContentsOfFile:xmlFilePath]; 21 //获取document对象，xml文档对象 22 GDataXMLDocument *document = [[GDataXMLDocument alloc] initWithData:xmlData options:0 error:nil]; 23 //获取根节点对象 24 GDataXMLElement *rootElement = [document rootElement]; 25 26 //获取指定路径的所有节点 返回值为数组对象 27 GDataXMLElement *dict = [[rootElement nodesForXPath:@"./dict" error:nil] objectAtIndex:0]; 28 //获取当前节点dict下的所有名为key节点的值 29 NSArray *keyArray = [dict elementsForName:@"key"]; 30 31 //获取指定路径所有的array节点 返回值为数组对象 32 NSArray *arrayArray = [rootElement nodesForXPath:@"./dict/array" error:nil]; 33 34 NSInteger len = [keyArray count]; 35 36 //遍历 37 for (NSInteger i=0; i<len; i++) { 38 //将节点的值转为字符串对象 39 NSString *alString = [[keyArray objectAtIndex:i] stringValue]; 40 41 //创建一个可变数组存储城市名称 42 NSMutableArray *cityChinaNames = [[NSMutableArray alloc] init]; 43 //获取当前array节点所有名为string节点的值 44 NSArray *elementsValue = [[arrayArray objectAtIndex:i] elementsForName:@"string"]; 45 for (GDataXMLElement *item in elementsValue) { 46 //可变数组中加入城市名称 47 [cityChinaNames addObject:[item stringValue]]; 48 } 49 50 //将对应的字母和和城市数组对象添加到字典中 51 [self.alphAndCityNameList setObject:cityChinaNames forKey:alString]; 52 } 53 } 54 55 56 + (void)test:(NSString *)xmlFilePath 57 { 58 char cityName[100] = {}; 59 scanf("%s",cityName); 60 61 ParseAlphAndCityName *parseXml = [[ParseAlphAndCityName alloc] init]; 62 [parseXml parseXml:xmlFilePath]; 63 64 for (NSString *key in parseXml.alphAndCityNameList) { 65 NSArray *citys = [parseXml.alphAndCityNameList objectForKey:key]; 66 if ([citys containsObject:[NSString stringWithUTF8String:cityName]]) { 67 NSLog(@"%@",key); 68 } 69 } 70 71 } 72 73 @end
main.m文件
#import "ParseAlphAndCityName.h" #define XmlFilePath @"/Users/qianfeng/Desktop/day23_OC13_xml文件/day23_OC13_XML城市解析_练习/qfile.xml" int main(int argc, const char * argv[]) { @autoreleasepool { [ParseAlphAndCityName test:XmlFilePath]; } return 0; }