XML：通过内部节点嵌套节点解析和部分

Question

分离我有下面的XML架构我试图遍历：

<routes> 
    <route> 
      <group>Group Name - Will be iPhone section name</group> 
      <item> 
       <name>Route Name - Will be iphone cell lable</name> 
       <url>Route URL - View Did select lable</url> 
      </item> 
      <item> 
       <name>Route Name - Will be iphone cell lable</name> 
       <url>Route URL - View Did select lable</url> 
      </item> 
      <item> 
       <name>Route Name - Will be iphone cell lable</name> 
       <url>Route URL - View Did select lable</url> 
      </item> 
      <item> 
       <name>Route Name - Will be iphone cell lable</name> 
       <url>Route URL - View Did select lable</url> 
      </item> 
    </route> 
    <route> 
      <group>Group 2 - Will be iPhone section name</group> 
      <item> 
       <name>Route Name - Will be iphone cell lable</name> 
       <url>Route URL - View Did select lable</url> 
      </item>   
      <item> 
       <name>Route Name - Will be iphone cell lable</name> 
       <url>Route URL - View Did select lable</url> 
      </item> 
    </route> 
</routes> 

现在大部分都在项目相当多的项目 - 和Group节点将是该部分的标题为UITableView的

继承人如何我解析（错误地）的XML的时刻：

（这里是xNode_ declaraions :)

static NSString *xNode_route [email protected]"//route"; 
static NSString *xNode_group [email protected]"group"; 
static NSString *xNode_item= @"//item"; 
static NSString *xNode_name = @"name"; 
static NSString *xNode_url = @"url"; 

下面是解析的代码：

CXMLDocument *doc = [[CXMLDocument alloc] initWithData:dataReply options:0 error:nil]; 
    NSArray *route = [doc nodesForXPath:xNode_route error:nil];//Root node 
    for (CXMLElement *item in route) 
    { 
     AssessObject *newobj2 = [[AssessObject alloc] init]; 
     NSArray *arryGroup = [item elementsForName:xNode_group]; 
     for(CXMLElement *assGroup in arryGroup) 
     { 

      newobj2.assGroup = assGroup.stringValue; 
      NSLog(@"Assessment Group: %@", assGroup.stringValue); 

     } 

     [groupArray addObject:newobj2]; 


    } 

    NSArray *items = [doc nodesForXPath:xNode_item error:nil];//Root node 
    for (CXMLElement *item in items) 
    { 
     AssessObject *newobj = [[AssessObject alloc] init]; 
     NSArray *arryName = [item elementsForName:xNode_name]; 
     for(CXMLElement *assName in arryName) 
     { 

      newobj.assName = assName.stringValue; 
      NSLog(@"Assessment Name: %@", assName.stringValue); 

     } 

     NSArray *arryUrl = [item elementsForName:xNode_url]; 
     for(CXMLElement *assUrl in arryUrl) 
     { 

      newobj.assUrl = assUrl.stringValue; 
      NSLog(@"Assessment URL: %@", assUrl.stringValue); 


     } 

      [totalArray addObject:newobj]; 
    } 
} 

在它要通过所有的项目X有组的量的时刻，所以某处循环不正确。所以如果有6个组，它会显示6次重复的项目。

所以这是第一部分，第二部分实际上是如何将阵列分成组并将正确的项目放入组中？

Answer 1

首先，您没有正确释放内存。

在发布的代码中有6个发布语句 - 全部删除它们。

然后，你需要添加两个声明：

[release newObj2]; 

为您明确分配对象

：newObj和newObj2，你将它们添加到阵列之后。

然后，如果事情不起作用，我们可以谈论解析。

编辑： 好吧，让我们来谈谈解析：

+ (NSMutableArray *) parseResponseString:(NSString *) responseString { 
NSError *error; 
CXMLDocument *doc = [[CXMLDocument alloc] initWithXMLString: responseString 
                options: 0 
                 error: &error]; 
if (error) { 
    NSLog(@"CXMLDocument error: %@", [error description]); 
    [doc release]; 
    return nil; 
} 


CXMLElement * el = [doc rootElement]; 
NSMutableArray *theRoutes = [NSMutableArray arrayWithCapacity:128]; // adjust to your needs 

if ([[el name] isEqualToString:@"routes"]) {      // parameterize these string constants 
    for (CXMLElement *childElement in [el children]) { 
     if ([[childElement name] isEqualToString:@"route"]) { 
      Route *aRoute = [[Route alloc] init]; 

      for (CXMLElement *grandChild in [childElement children]) { 
       if ([[grandChild name] isEqualToString:@"group"]) { 
        aRoute.group = [grandChild stringValue]; 
       } else if ([[grandChild name] isEqualToString:@"item"]) { 
        RouteItem *aRouteItem = [[RouteItem alloc] init]; 

        for (CXMLElement *subItem in [grandChild children]) { 
         if ([[subItem name] isEqualToString:@"name"]) { 
          aRouteItem.name = [subItem stringValue]; 
         } else if ([[subItem name] isEqualToString:@"url"]) { 
          aRouteItem.url = [subItem stringValue]; 
         } 
        } 

        if (aRouteItem && aRouteItem.name && aRouteItem.url) { 
         [aRoute.routeItems addObject:aRouteItem]; 
        } 
        [aRouteItem release]; 
       } 
      } 

      if (aRoute && aRoute.group && aRoute.items.count) { 
       [theRoutes addObject:aRoute]; 
      } 
      [aRoute release]; 
     } 
    } 
} 
[doc release]; 
return theRoutes; // this is your array for your tableview data source. 

}