xml - 如何将 NSArray 放入 XML 文件并上传到 URL

Question

我在 xcode 工作；我有一个 NSArray 数据，我想将其转换为 XML 文件，然后上传到 Web 数据库。

数组的格式如下：

555ttt Conor Brady testpass BC test Desc this is user timestamp this is location this is user location

我希望它转换成 XML 文件，如下所示：

<plates>
<plate>
<plateno>555ttt</plateno>
<user>Conor Brady</user>
<username>cbrady</username>
<password>testpass</password>
<province>BC</province>
<description>test desc</description>
<usertimestamp>this is user timestamp</usertimestamp>
<location>this is user location</location>
<status>this is user status</status>
</plate>
<plate>
<plateno>333yyy</plateno>
<user>C Brady</user>
<username>cbrady</username>
<password>testpass</password>
<province>BC</province>
<description>This is a test description</description>
<usertimestamp>this is user timestamp</usertimestamp>
<location>this is user location</location>
<status>this is user status</status>
</plate>
</plates>

有什么建议吗？

Answer 1

您需要创建从数组中的数据到要生成的 XML 中的标记的映射。最简单的方法是为要添加到 XML 的每个印版创建一个字典。这样的事情应该可以解决问题：

// Encode the data in an array of dictionaries
// Each dictionary has a key indentifying the XML tag
NSDictionary *plate1 = @{@"plateno" : @"555ttt", @"user" : @"Conor Brady", @"password" : @"testpass", @"province" : @"BC", @"description" : @"test desc", @"location" : @"this is user location"};
NSDictionary *plate2 = @{@"plateno" : @"333yyy", @"user" : @"C Brady", @"password" : @"testpass", @"province" : @"BC", @"description" : @"test desc", @"location" : @"this is user location"};
NSArray *platesData = @[plate1, plate2];

// Build the XML string
NSMutableString *xmlString = [NSMutableString string];

// Start the plates data
[xmlString appendString:@"<plates>"];

for (NSDictionary *plateDict in platesData) {
    // Start a plate entry
    [xmlString appendString:@"<plate>"];

    // Add all the keys (XML tags) and values to the string
    [plateDict enumerateKeysAndObjectsUsingBlock:^(id key, id value, BOOL *stop){
        [xmlString appendFormat:@"<%@>%@</%@>", key, value, key];
    }];

    // End a plate entry
    [xmlString appendString:@"</plate>"];
}

// End the plates data
[xmlString appendString:@"</plates>"];