IOS手机端应用程序调用Servlet

NSString *nstrWyKPIUrl =[[NSString alloc]initWithFormat:
@"%@?citys=%@&startTime=%@&endTime=%@
&indexNames=%@",WYKPIURL,city,startTime,endTime,zbz];
//citys，startTime，endTime，indexNames Servlet传递参数，
WYKPIURL为字符串“http://61.156.3.110:8080/zhw/service/NPOReportService”
Servlet访问路径。
NSString *encodedURL = [nstrWyKPIUrl stringByAddingPercentEscapesUsingEncoding:
NSUTF8StringEncoding]; 
NSLog(@"encodedURL is %@",encodedURL);
NSXMLParser *parser = [[NSXMLParser alloc] 
initWithContentsOfURL:[NSURL URLWithString:encodedURL ]];
//NSXMLParser XML解析器
[parser setShouldProcessNamespaces:NO];
[parser setShouldReportNamespacePrefixes:NO];
[parser setShouldResolveExternalEntities:NO];
parser.delegate = self;
[parser parse];
[parser release];