iOS中解决Xcode9的Log日志无法输出中文的问题小结

问题描述

xcode的log日志输出中文的问题,一般都是重写nsarray,nsdictionary的- (nsstring *)descriptionwithlocale:(id)locale;方法进行处理,最近升级到xcode9会后发现原来的处理逻辑也无法满足输出中文的需求,后台返回的状态描述涉及到中文的都变成了unicode编码,其实这是重写的方法失效的问题,因为xcode默认输出nsarray,nsdictionary的中文都是unicode编码

正确的解决方案如下, 创建nsarray+zylog分类

nsarray+zylog.h文件

//
// nsarray+zylog.h
// zylog
//
// created by zhouyu on 17/11/08.
// copyright © 2017年 zhouyu. all rights reserved.
//
#import <foundation/foundation.h>
@interface nsarray (zylog)
@end
@interface nsdictionary (zylog)
@end

nsarray+zylog.m文件

//
// nsarray+zylog.m
// zylog
//
// created by zhouyu on 17/11/08.
// copyright © 2017年 zhouyu. all rights reserved.
//
#import "nsarray+zylog.h"
@implementation nsarray (zylog)
#ifdef debug
- (nsstring *)description {
 return [self zy_descriptionwithlevel:1];
}
-(nsstring *)descriptionwithlocale:(id)locale{
 return [self zy_descriptionwithlevel:1];
}
- (nsstring *)descriptionwithlocale:(nullable id)locale indent:(nsuinteger)level {
 return [self zy_descriptionwithlevel:(int)level];
}
/**
 将数组转化成字符串，文字格式utf8,并且格式化
 @param level 当前数组的层级，最少为 1，代表最外层
 @return 格式化的字符串
 */
- (nsstring *)zy_descriptionwithlevel:(int)level {
 nsstring *subspace = [self zy_getspacewithlevel:level];
 nsstring *space = [self zy_getspacewithlevel:level - 1];
 nsmutablestring *retstring = [[nsmutablestring alloc] init];
 // 1、添加 [
 [retstring appendstring:[nsstring stringwithformat:@"["]];
 // 2、添加 value
 [self enumerateobjectsusingblock:^(id _nonnull obj, nsuinteger idx, bool * _nonnull stop) {
  if ([obj iskindofclass:[nsstring class]]) {
   nsstring *value = (nsstring *)obj;
   value = [value stringbyreplacingpercentescapesusingencoding:nsutf8stringencoding];
   nsstring *substring = [nsstring stringwithformat:@"\n%@\"%@\",", subspace, value];
   [retstring appendstring:substring];
  } else if ([obj iskindofclass:[nsarray class]]) {
   nsarray *arr = (nsarray *)obj;
   nsstring *str = [arr zy_descriptionwithlevel:level + 1];
   str = [nsstring stringwithformat:@"\n%@%@,", subspace, str];
   [retstring appendstring:str];
  } else if ([obj iskindofclass:[nsdictionary class]]) {
   nsdictionary *dic = (nsdictionary *)obj;
   nsstring *str = [dic descriptionwithlocale:nil indent:level + 1];
   str = [nsstring stringwithformat:@"\n%@%@,", subspace, str];
   [retstring appendstring:str];
  } else {
   nsstring *substring = [nsstring stringwithformat:@"\n%@%@,", subspace, obj];
   [retstring appendstring:substring];
  }
 }];
 if ([retstring hassuffix:@","]) {
  [retstring deletecharactersinrange:nsmakerange(retstring.length-1, 1)];
 }
 // 3、添加 ]
 [retstring appendstring:[nsstring stringwithformat:@"\n%@]", space]];
 return retstring;
}
/**
 根据层级，返回前面的空格占位符
 @param level 层级
 @return 占位空格
 */
- (nsstring *)zy_getspacewithlevel:(int)level {
 nsmutablestring *mustr = [[nsmutablestring alloc] init];
 for (int i=0; i<level; i++) {
  [mustr appendstring:@"\t"];
 }
 return mustr;
}
#endif
@end
@implementation nsdictionary (zylog)
#ifdef debug
- (nsstring *)description {
 return [self zy_descriptionwithlevel:1];
}
- (nsstring *)descriptionwithlocale:(nullable id)locale {
 return [self zy_descriptionwithlevel:1];
}
- (nsstring *)descriptionwithlocale:(nullable id)locale indent:(nsuinteger)level {
 return [self zy_descriptionwithlevel:(int)level];
}
/**
 * 非字典时，会引发崩溃
 */
- (nsstring *)zy_getutf8string {
 if ([self iskindofclass:[nsdictionary class]] == no) {
  return @"";
 }
 nserror *error = nil;
 nsdata *data = [nsjsonserialization datawithjsonobject:self options:nsjsonwritingprettyprinted error:&error];
 if (error) {
  return @"";
 }
 nsstring *str = [[nsstring alloc] initwithdata:data encoding:nsutf8stringencoding];
 return str;
}
/**
 将字典转化成字符串，文字格式utf8,并且格式化
 @param level 当前字典的层级，最少为 1，代表最外层字典
 @return 格式化的字符串
 */
- (nsstring *)zy_descriptionwithlevel:(int)level {
 nsstring *subspace = [self zy_getspacewithlevel:level];
 nsstring *space = [self zy_getspacewithlevel:level - 1];
 nsmutablestring *retstring = [[nsmutablestring alloc] init];
 // 1、添加 {
 [retstring appendstring:[nsstring stringwithformat:@"{"]];
 // 2、添加 key : value;
 [self enumeratekeysandobjectsusingblock:^(id _nonnull key, id _nonnull obj, bool * _nonnull stop) {
  if ([obj iskindofclass:[nsstring class]]) {
   nsstring *value = (nsstring *)obj;
   value = [value stringbyreplacingpercentescapesusingencoding:nsutf8stringencoding];
   nsstring *substring = [nsstring stringwithformat:@"\n%@\"%@\" : \"%@\",", subspace, key, value];
   [retstring appendstring:substring];
  } else if ([obj iskindofclass:[nsdictionary class]]) {
   nsdictionary *dic = (nsdictionary *)obj;
   nsstring *str = [dic zy_descriptionwithlevel:level + 1];
   str = [nsstring stringwithformat:@"\n%@\"%@\" : %@,", subspace, key, str];
   [retstring appendstring:str];
  } else if ([obj iskindofclass:[nsarray class]]) {
   nsarray *arr = (nsarray *)obj;
   nsstring *str = [arr descriptionwithlocale:nil indent:level + 1];
   str = [nsstring stringwithformat:@"\n%@\"%@\" : %@,", subspace, key, str];
   [retstring appendstring:str];
  } else {
   nsstring *substring = [nsstring stringwithformat:@"\n%@\"%@\" : %@,", subspace, key, obj];
   [retstring appendstring:substring];
  }
 }];
 if ([retstring hassuffix:@","]) {
  [retstring deletecharactersinrange:nsmakerange(retstring.length-1, 1)];
 }
 // 3、添加 }
 [retstring appendstring:[nsstring stringwithformat:@"\n%@}", space]];
 return retstring;
}
/**
 根据层级，返回前面的空格占位符
 @param level 字典的层级
 @return 占位空格
 */
- (nsstring *)zy_getspacewithlevel:(int)level {
 nsmutablestring *mustr = [[nsmutablestring alloc] init];
 for (int i=0; i<level; i++) {
  [mustr appendstring:@"\t"];
 }
 return mustr;
}
#endif
@end

效果

而且直接就是json串,复制log日志,直接在json格式化工具中使用

参考

jllogencoding

总结

以上所述是小编给大家介绍的ios中解决xcode9的log日志无法输出中文的问题小结，希望对大家有所帮助