B9－kissXML的简单使用

一、kissXML的github地址

     https://github.com/robbiehanson/KissXML

二、使用前注意⚠

     项目要导入libxml2.dylib。另运行时提示"libxml/tree.h"找不到，需要在项目的Build Settings搜索Header S，将Header Search Paths项设置为：/usr/include/libxml2。

三、kissXML的简单使用

   1、xml文件如下：

   2、几个方法使用举例

#import"DDXML.h"



#import"DDXMLElementAdditions.h"



@implementation ViewController



//解析XML



staticNSString *kXML =@"//District//Province";

- (void)viewDidLoad

{

    [super viewDidLoad];



   NSString *path =[[NSString alloc] initWithString:[[NSBundle mainBundle] pathForResource:@"ProvinceCity" ofType:@"xml"]]


   NSData *data = [[NSData alloc] initWithContentsOfFile:path];



   [self parsedDataFromData:data andProvince:@"江西省"];



[self parsedDataFromData:data];



}



//取特定省份下包含所有城市



-(void)parsedDataFromData:(NSData *)data andProvince:(NSString *)province{



DDXMLDocument *doc = [[DDXMLDocument alloc] initWithData:data options:0error:nil];



/////解析



NSArray *items = [docnodesForXPath:kXMLerror:nil];



    



for (DDXMLElement *objin items) {



        DDXMLNode *aUser = [obj attributeForName:@"Name"];//取属性Name的值



        if ([aUser.stringValueisEqualToString:province])



        {



            NSArray *CityLst = [obj elementsForName:@"City"];//取城市点点列表，保存到数组中



            if(CityLst.count>0)//第二层



            {



               for (DDXMLElement *citysin CityLst) {



                   DDXMLNode *citynode=[citys attributeForName:@"Name"];



                   NSLog(@"%@",citynode.stringValue);



                }



            }



        }



    }



}



//取所有省份及其下级节点，包含修改操作



- (void)parsedDataFromData:(NSData *)data{



DDXMLDocument *doc = [[DDXMLDocument alloc] initWithData:data options:0 error:nil];



/////解析



NSArray *items = [doc nodesForXPath:kXML error:nil];



for (DDXMLElement *obj in items) {



DDXMLNode *aUser = [obj attributeForName:@"Name"];//取属性Name的值



       //[aUser setStringValue:@"haha!"];//修改属性节点的值



        [obj addAttribute:[DDXMLNodeattributeWithName:@"test"stringValue:@"wzh"]];//增加一个属性节点



        [obj addAttributeWithName:@"ttt"stringValue:@"343"];//再增加一个属性节点



       //[obj setStringValue:@"NewNode"];//设置当前节点的值



        DDXMLNode *newnode=[DDXMLNode elementWithName:@"newNode"];//设置一个新的节点



        [obj addChild:newnode];//给obj添加一个节点



        



DDXMLElement *newdxml = [[obj elementsForName:@"newNode"] objectAtIndex:0];//访问刚刚添加的节点



        [newdxml addAttributeWithName:@"nodetwo"stringValue:@"twovalue"];//给刚添加的节点增加增的下级节点，并且下级节点再一个属性值



        DDXMLNode *newnode2=[DDXMLNode elementWithName:@"newNode2" stringValue:@"hello!"];



        [newdxmladdChild:newnode2];



}



   //保存到沙盒目录下



   NSString *path =[[NSStringalloc]initWithFormat:@"%@/xmlData.xml", [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES) objectAtIndex:0]];



    NSString *result=[[NSStringalloc]initWithFormat:@"%@",doc];



    [resultwriteToFile:pathatomically:YESencoding:NSUTF8StringEncoding error:nil];

}

 

 

四、补充，如何把资源文件放到documents目录下。（未验证）

    BOOL success;

    NSFileManager *fileManager = [NSFileManager defaultManager];

    NSError *error;

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0];

    NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:DATABASE_FILENAME];

    success = [fileManager fileExistsAtPath:writableDBPath];

    if (success) return;

    // The writable database does not exist, so copy the default to the appropriate location.

    NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:DATABASE_FILENAME];

    success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error];

    if (!success) {

        ////NSAssert1(0, @"Failed to create writable database file with message '%@'.", DATABASE_FILENAME );

    }