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 );
    }