当连接中含有的值 有汉字时，需要对汉字进行编码。如果h5页面使用了js中的escape方法进行了编码。ios可以使用下面这种方式进行解码
//
// JSEscape.m
// PLBaseModule
//
// Created by 张凯强 on 2021/5/18.
//
#import "JSEscape.h"
#include <ctype.h>
@implementation JSEscape
NSString * tohex(int tmpid)
{
NSString *nLetterValue;
NSString *str =@"";
long long int ttmpig;
for (int i = 0; i<9; i++) {
ttmpig=tmpid%16;
tmpid=tmpid/16;
switch (ttmpig)
{
case 10:
nLetterValue =@"A";break;
case 11:
nLetterValue =@"B";break;
case 12:
nLetterValue =@"C";break;
case 13:
nLetterValue =@"D";break;
case 14:
nLetterValue =@"E";break;
case 15:
nLetterValue =@"F";break;
default:nLetterValue=[[NSString alloc]initWithFormat:@"%lli",ttmpig];
}
str = [nLetterValue stringByAppendingString:str];
if (tmpid == 0) {
break;
}
}
return str;
}
NSString * esp(NSString * src){
int i;
NSString* tmp = @"";
for (i=0; i<[src length]; i++) {
unichar c = [src characterAtIndex:(NSUInteger)i];
if(isdigit(c)||isupper(c)|islower(c)){
tmp = [NSString stringWithFormat:@"%@%c",tmp,c];
}else if((int)c <256){
tmp = [NSString stringWithFormat:@"%@%@",tmp,@"%"];
if((int)c <16){
tmp =[NSString stringWithFormat:@"%@%@",tmp,@"0"];
}
tmp = [NSString stringWithFormat:@"%@%@",tmp,tohex((int)c)];
}else{
tmp = [NSString stringWithFormat:@"%@%@",tmp,@"%u"];
tmp = [NSString stringWithFormat:@"%@%@",tmp,tohex(c)];
}
}
return tmp;
}
Byte getInt(char c){
if(c>='0'&&c<='9'){
return c-'0';
}else if((c>='a'&&c<='f')){
return 10+(c-'a');
}else if((c>='A'&&c<='F')){
return 10+(c-'A');
}
return c;
}
int getIntStr(NSString *src,int len){
if(len==2){
Byte c1 = getInt([src characterAtIndex:(NSUInteger)0]);
Byte c2 = getInt([src characterAtIndex:(NSUInteger)1]);
return ((c1&0x0f)<<4)|(c2&0x0f);
}else{
Byte c1 = getInt([src characterAtIndex:(NSUInteger)0]);
Byte c2 = getInt([src characterAtIndex:(NSUInteger)1]);
Byte c3 = getInt([src characterAtIndex:(NSUInteger)2]);
Byte c4 = getInt([src characterAtIndex:(NSUInteger)3]);
return( ((c1&0x0f)<<12)
|((c2&0x0f)<<8)
|((c3&0x0f)<<4)
|(c4&0x0f));
}
}
+ (NSString *)unesp:(NSString *)src {
int lastPos = 0;
int pos=0;
unichar ch;
NSString * tmp = @"";
while(lastPos<src.length){
NSRange range;
range = [src rangeOfString:@"%" options:NSLiteralSearch range:NSMakeRange(lastPos, src.length-lastPos)];
if (range.location != NSNotFound) {
pos = (int)range.location;
}else{
pos = -1;
}
if(pos == lastPos){
if([src characterAtIndex:(NSUInteger)(pos+1)]=='u'){
NSString* ts = [src substringWithRange:NSMakeRange(pos+2,4)];
int d = getIntStr(ts,4);
ch = (unichar)d;
NSLog(@"%@%C",tohex(d),ch);
tmp = [tmp stringByAppendingString:[NSString stringWithFormat:@"%C",ch]];
lastPos = pos+6;
}else{
NSString* ts = [src substringWithRange:NSMakeRange(pos+1,2)];
int d = getIntStr(ts,2);
ch = (unichar)d;
tmp = [tmp stringByAppendingString:[NSString stringWithFormat:@"%C",ch]];
lastPos = pos+3;
}
}else{
if(pos ==-1){
NSString* ts = [src substringWithRange:NSMakeRange(lastPos,src.length-lastPos)];
tmp = [tmp stringByAppendingString:[NSString stringWithFormat:@"%@",ts]];
lastPos = (int)src.length;
}else{
NSString* ts = [src substringWithRange:NSMakeRange(lastPos,pos-lastPos)];
tmp = [tmp stringByAppendingString:[NSString stringWithFormat:@"%@",ts]];
lastPos = pos;
}
}
}
return tmp;
}
@end
