escape解密
+ (NSString *)replaceUnicodeTest:(NSString *)test
{// test为需要解码的字符串
NSString *body = test;
NSMutableString *mutableStr = [[NSMutableString alloc] initWithCapacity:1];
NSScanner*scanner=[NSScanner scannerWithString:body];
[scanner setCaseSensitive:YES]; // yes 区分大小写
NSString *keyString01 = @"%";
int lastPos = 0; int pos = 0;
while (lastPos < body.length) {
@autoreleasepool{
pos = [self indexOf:body andPre:keyString01 andStartLocation:lastPos];
if (pos == lastPos) {
// 转为unicode 编码 再解码
if ([body characterAtIndex:(pos + 1)] == 'u') {
NSRange range = NSMakeRange(pos, 6);
NSString *tempBody =[body substringWithRange:range];
NSString *temp01 = [tempBody stringByReplacingOccurrencesOfString:@"%" withString:@"\\"];
NSString *temp02 = [self replaceUnicode:temp01]; // 转为中文
// NSLog(@"--%@",temp02);
[mutableStr appendString:temp02];
lastPos = pos + 6;
} else {
NSRange range = NSMakeRange(pos, 3);
NSString *tempBody =[body substringWithRange:range];
NSString *temp01 = [tempBody stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
// NSLog(@"--%@",temp01);
[mutableStr appendString:temp01];
lastPos = pos + 3;
}
}else if (pos == -1) {
NSString *tempBody =[body substringFromIndex:lastPos];
[mutableStr appendFormat:@"%@",tempBody];
lastPos = (int)body.length;
}else {
NSRange range = NSMakeRange(lastPos, pos-lastPos);
NSString *tempBody =[body substringWithRange:range];
[mutableStr appendString:tempBody];
lastPos = pos;
}
}
}
return mutableStr;
}
// 转为中文
+ (NSString *)replaceUnicode:(NSString *)msg
{
NSString *tempStr1 = [msg stringByReplacingOccurrencesOfString:@"\\u" withString:@"\\U"];
NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"\"" withString:@"\""];
NSString *tempStr3 = [[@"\"" stringByAppendingString:tempStr2] stringByAppendingString:@"\""];
NSData *tempData = [tempStr3 dataUsingEncoding:NSUTF16StringEncoding];
NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData
mutabilityOption:NSPropertyListImmutable
format:NULL
errorDescription:NULL];
return [returnStr stringByReplacingOccurrencesOfString:@"\\r\\n" withString:@"\n"];
}
// 查找有咩有百分号 并返回ta的位置
+ (int)indexOf:(NSString *)allStr andPre:(NSString *)pre andStartLocation:(int)StartLocation
{
NSString *body = [allStr substringFromIndex:StartLocation];
NSScanner*scanner=[NSScanner scannerWithString:body];
NSString *keyString01 = pre;
[scanner setCaseSensitive:YES]; // yes 区分大小写
BOOL b = NO;
int returnInt = 0;
while (![scanner isAtEnd]) {
b = [scanner scanString:keyString01 intoString:NULL];
if(b) {
returnInt = StartLocation + (int)scanner.scanLocation - 1;
break;
}
scanner.scanLocation++;
}
if (!b) {
returnInt = -1;
}
return returnInt;
}