問題描述

Xcode的Log日誌輸出中文的問題,一般都是重寫NSArray,NSDictionary的- (NSString *)descriptionWithLocale:(id)locale;方法進行處理,最近升級到Xcode9會後發現原來的處理邏輯也無法滿足輸出中文的需求,後臺返回的狀態描述涉及到中文的都變成了Unicode編碼,其實這是重寫的方法失效的問題,因為Xcode預設輸出NSArray,NSDictionary的中文都是Unicode編碼

正確的解決方案如下,
建立NSArray+ZYLog分類

NSArray+ZYLog.h檔案

//
//  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檔案

//
//  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];
}

/**
 將陣列轉化成字串，文字格式UTF8,並且格式化

 @param level 當前陣列的層級，最少為 1，代表最外層
 @return 格式化的字串
 */
- (NSString *)ZY_descriptionWithLevel:(int)level {
    NSString *subSpace = [self ZY_getSpaceWithLevel:level];
    NSString *space = [self ZY_getSpaceWithLevel:level - 1];
    NSMutableString *retString = [[NSMutableString alloc] init];
    // 1、新增 [
    [retString appendString:[NSString stringWithFormat:@"["]];
    // 2、新增 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、新增 ]
    [retString appendString:[NSString stringWithFormat:@"\n%@]", space]];
    return retString;
}


/**
 根據層級，返回前面的空格佔位符

 @param level 層級
 @return 佔位空格
 */
- (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];
}

/**
 * 非字典時，會引發崩潰
 */
- (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;
}


/**
 將字典轉化成字串，文字格式UTF8,並且格式化

 @param level 當前字典的層級，最少為 1，代表最外層字典
 @return 格式化的字串
 */
- (NSString *)ZY_descriptionWithLevel:(int)level {
    NSString *subSpace = [self ZY_getSpaceWithLevel:level];
    NSString *space = [self ZY_getSpaceWithLevel:level - 1];
    NSMutableString *retString = [[NSMutableString alloc] init];
    // 1、新增 {
    [retString appendString:[NSString stringWithFormat:@"{"]];
    // 2、新增 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、新增 }
    [retString appendString:[NSString stringWithFormat:@"\n%@}", space]];
    return retString;
}


/**
 根據層級，返回前面的空格佔位符

 @param level 字典的層級
 @return 佔位空格
 */
- (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,複製log日誌,直接在json格式化工具中使用

參考