iOS开发解决Xcode9的Log日志无法输出中文的问题

原创已于 2025-03-03 18:58:15 修改 · 3.6k 阅读

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文章标签：

#ios #xcode #Log #中文编码 #Unicode

于 2017-11-10 09:46:50 首次发布

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本文介绍了如何在Xcode9中解决Log日志无法输出中文的问题，通过创建NSArray+ZYLog分类，并提供了头文件和实现文件的代码示例，实现了日志输出为可直接用于JSON格式化的Unicode编码。

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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