日志系统主要包含两个部分
1.本地保存
我们知道NSLog打印的日志一般都是直接输出到控制台，开发人员可以在控制台直接看到实时打印的log，既然可以在控制台输出，那么能否将日志输出到其他地方呢，比如说自己定义的text文件？答案是肯定的 ，在iOS中可以通过一些方法将文件重定向到指定输出位置：
freopen([filePath cStringUsingEncoding:NSASCIIStringEncoding],"a+", stdout);
freopen([filePath cStringUsingEncoding:NSASCIIStringEncoding], "a+", stderr);
实现了上述方法，就可以将log重定向到指定的filePath中了，既然文件中保存到了本地，那么怎么处理，怎么加密完全看你们公司的业务需求咯
2.日志上传
日志上传首先需要将本地日志打包成zip格式的文件，这样可以减小上传的size，通过ZipArchive将日志文件打包好，通过afnetworking的 formData将文件上传了
[formData appendPartWithFileURL:url name:@"zipFile" fileName:[NSString stringWithFormat:@"%@.zip",[self getCurrentTime]] mimeType:@"multipart/form-data" error:nil];
具体部分实现代码如下：
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@interface LogServer : NSObject
+(instancetype)shareInstance;
///开启写日志
-(void)writeLog;
///上传日志
-(void)uploadLog;
///清空本地日志
-(void)clearLog;
@end
NS_ASSUME_NONNULL_END
#import "LogServer.h"
#import <ZipArchive/ZipArchive.h>
#define MaxCount 30 //只保留最近的30条数据
#define MaxSize (1024*4) //4M
@interface LogServer (){
NSString *filePath_; //文件存放路径
}
@end
static LogServer * instance = nil;
@implementation LogServer
+(instancetype)shareInstance{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
instance = [[LogServer alloc] init];
[instance initLogServer];
});
return instance;
}
-(void)initLogServer{
NSString *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
//初始化log路径
filePath_ = [path stringByAppendingPathComponent:@"Log"];
NSFileManager *manager = [NSFileManager defaultManager];
if (![manager fileExistsAtPath:filePath_]) {
//如果Log文件夹不存在，就创建文件夹
[manager createDirectoryAtPath:filePath_ withIntermediateDirectories:YES attributes:nil error:nil];
}
}
-(void)writeLog{
// Do any additional setup after loading the view.
//如果文件有zip格式则直接移除掉 可能是上次打包上传的
[self removeZipFile];
//如果文件夹中的文件超过最大限制 咋移除旧数据
[self removeExpireFile];
//加密文件
[self encryptLastFile];
//将日志写入到文件中
NSString *filePath = [filePath_ stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.text",[self fileNameAtTime]]];
freopen([filePath cStringUsingEncoding:NSASCIIStringEncoding],"a+", stdout);
freopen([filePath cStringUsingEncoding:NSASCIIStringEncoding], "a+", stderr);
NSLog(@"filePath:%@",filePath);
//异常日志报告
NSSetUncaughtExceptionHandler(&caughtExceptionHandler);
}
-(void)uploadLog{
//将需要上传的文件加密zip格式上传到服务器
NSArray *sortArray = [self sortFileAscending];
if (sortArray.count > 0) {
ZipArchive *zip = [[ZipArchive alloc] init];
NSString *path = [filePath_ stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.zip",[self fileNameAtTime]]];
BOOL ret = [zip CreateZipFile2:path];
if (ret) {
//便利所有文件内容
for (int i = sortArray.count - 1; i>=0; i--) {
NSString *fileName = sortArray[i];
NSString *filePath = [filePath_ stringByAppendingPathComponent:fileName];
[zip addFileToZip:filePath newname:fileName];
//判断zip文件大小 如果文件大小大于最大限制 则停止剩余文件的压缩
long long zipSize = [self getFileSize:path];
if (zipSize > MaxSize) {
break;
}
}
[zip CloseZipFile2];
//将zip文件上传到服务器
// afnetworking 文件上传到指定服务器即可
}
}
}
-(void)clearLog{
NSFileManager *manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath_]) {
NSError *error = nil;
[manager removeItemAtPath:filePath_ error:&error];
if (error) {
NSLog(@"日志清空失败：%@",error);
}else{
NSLog(@"日志清空成功");
}
}
}
#pragma mark - private
#pragma mark 异常处理日志
void caughtExceptionHandler(NSException *exception){
/**
* 获取异常崩溃信息
*/
NSArray *callStack = [exception callStackSymbols];
NSString *reason = [exception reason];
NSString *name = [exception name];
NSString *content = [NSString stringWithFormat:@"========异常错误报告========
name:%@
reason:
%@
callStackSymbols:
%@",name,reason,[callStack componentsJoinedByString:@"
"]];
NSLog(@"%@",content);
}
#pragma mark 获取文件大小
-(long long)getFileSize:(NSString *)path{
unsigned long long fileLength = 0;
NSNumber *fileSize;
NSFileManager *fileManager = [NSFileManager defaultManager];
if([fileManager fileExistsAtPath:path]){
NSDictionary *fileAttributes = [fileManager attributesOfItemAtPath:path error:nil];
if ((fileSize = [fileAttributes objectForKey:NSFileSize])) {
fileLength = [fileSize unsignedLongLongValue]; //单位是 B
}
return fileLength / 1024;
}
return 0;
}
#pragma mark 用时间创建文件名
-(NSString *)fileNameAtTime{
NSDate *date = [NSDate date];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = @"yyyy-MM-dd-HH-mm-ss";
NSString *timeStr = [formatter stringFromDate:date];
return timeStr;
}
#pragma mark 加密文件内容
-(void)encryptLastFile{
//这里根据自己的需要将文件内容进行加密
NSFileManager *manager = [NSFileManager defaultManager];
NSArray *sortArray = [self sortFileAscending];
if (sortArray.count > 0) {
NSString *lastPath = sortArray.lastObject;
NSString *lastFilePath = [filePath_ stringByAppendingPathComponent:lastPath];
NSData *data = [manager contentsAtPath:lastFilePath];
NSString *base64String = [data base64EncodedStringWithOptions:0];
//
[base64String writeToFile:lastFilePath atomically:YES];
}
}
#pragma mark 移除过期数据
-(void)removeExpireFile{
NSFileManager *manager = [NSFileManager defaultManager];
//将文件中数据排序
NSArray *sortFileArray = [self sortFileAscending];
if(sortFileArray.count > MaxCount){
NSInteger count = sortFileArray.count - MaxCount;
//因为是升序排在前面的都是比较老的数据 移除前面的count个数据即可
for (int i = 0; i < count; i++) {
NSString *path = sortFileArray[i];
NSString *filePath = [filePath_ stringByAppendingPathComponent:path];
[manager removeItemAtPath:filePath error:nil];
}
}
}
#pragma mark 移除zip格式文件
-(void)removeZipFile{
NSFileManager *manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath_]) { //如果文件夹存在
NSArray *filesArray = [manager contentsOfDirectoryAtPath:filePath_ error:nil];
NSString *filePath = filePath_;
[filesArray enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
if (![obj containsString:@".text"]) {
NSString *nPath = [filePath stringByAppendingPathComponent:obj];
[manager removeItemAtPath:nPath error:nil];
}
}];
}
}
#pragma mark 将文件夹中的文件按照创建时间进行排序
-(NSArray *)sortFileAscending{
//拿到文件
NSFileManager *manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath_]) { //如果文件夹存在
NSArray *filesArray = [manager contentsOfDirectoryAtPath:filePath_ error:nil];
NSString *filePath = filePath_;
//便利文件夹中的所有文件
NSArray *array = [filesArray sortedArrayUsingComparator:^NSComparisonResult(NSString* _Nonnull file1, NSString * _Nonnull file2) {
//file1 file2全路径
NSString *file1Path = [filePath stringByAppendingPathComponent:file1];
NSString *file2Path = [filePath stringByAppendingPathComponent:file2];
//file1 file2 Info
NSDictionary *file1Dict = [[NSFileManager defaultManager] attributesOfItemAtPath:file1Path error:nil];
NSDictionary *file2Dict = [[NSFileManager defaultManager] attributesOfItemAtPath:file2Path error:nil];
//file1CreatTime file2CreatTime
NSDate *file1Date = [file1Dict objectForKey:NSFileCreationDate];
NSDate *file2Date = [file2Dict objectForKey:NSFileCreationDate];
//升序
return [file1Date compare:file2Date];
}];
return array;
}
return nil;
}
@end