请有人向我显示一个使用libxml解析一些
HTML的简单示例.
#import <libxml2/libxml/HTMLparser.h>
NSString *html = @"<ul>"
"<li><input type=\"image\" name=\"input1\" value=\"string1value\" /></li>"
"<li><input type=\"image\" name=\"input2\" value=\"string2value\" /></li>"
"</ul>"
"<span class=\"spantext\"><b>Hello World 1</b></span>"
"<span class=\"spantext\"><b>Hello World 2</b></span>";
1)说我想解析name = input2的输入的值.
应输出“string2value”.
2)说我想解析每个跨标签的class = spantext的内容.
应输出：“Hello World 1”和“Hello World 2”.
解决方法
我使用本里维斯
HTML Parser来实现我想要的：
NSError *error = nil;
NSString *html =
@"<ul>"
"<li><input type='image' name='input1' value='string1value' /></li>"
"<li><input type='image' name='input2' value='string2value' /></li>"
"</ul>"
"<span class='spantext'><b>Hello World 1</b></span>"
"<span class='spantext'><b>Hello World 2</b></span>";
HTMLParser *parser = [[HTMLParser alloc] initWithString:html error:&error];
if (error) {
NSLog(@"Error: %@",error);
return;
}
HTMLNode *bodyNode = [parser body];
NSArray *inputNodes = [bodyNode findChildTags:@"input"];
for (HTMLNode *inputNode in inputNodes) {
if ([[inputNode getAttributeNamed:@"name"] isEqualToString:@"input2"]) {
NSLog(@"%@",[inputNode getAttributeNamed:@"value"]); //Answer to first question
}
}
NSArray *spanNodes = [bodyNode findChildTags:@"span"];
for (HTMLNode *spanNode in spanNodes) {
if ([[spanNode getAttributeNamed:@"class"] isEqualToString:@"spantext"]) {
NSLog(@"%@",[spanNode allContents]); //Answer to second question
}
}
[parser release];
