邮箱开发(三) - MailCore2 详细使用

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简介

MailCore是一个第三方的邮件SDK，支持POP和IMAP 方式接收邮件，以及smtp邮件发送。

安装

1、从github上拉取代码

git clone https://github.com/MailCore/mailcore2/

2、添加到项目中

把build-mac/mailcore2.xcodeproj拖进工程

3、在项目中添加静态库链接

选中工程--TARGETS--Build Phases

在 Link Binary With Libraries 中添加：

libMailCore-ios.aCFNetwork.frameworkSecurity.framework

在 Target Dependencies 中选择：

static maincore2 ios

4、设置Flags

选中工程--TARGETS--Build Setting

在 Other Linker Flags 中设置

-lctemplate-ios -letpan-ios -lxml2 -lsasl2 -liconv -ltidy -lz -lc++ -stdlib=libc++ -ObjC -lresolv

在 C++ Standard Library 中设置

libc++

然后选择相应 Target 编译。

SMTP（Simple Mail Transfer Protocol）

1、先创建MCOSMTPSession，配置smtp邮箱参数

    MCOSMTPSession *smtpSession = [[MCOSMTPSession alloc] init];    smtpSession.hostname = @"smtp.exmail.qq.com";    smtpSession.port = 587;    smtpSession.username = @"hello@qq.com";    smtpSession.password = @"passward";    smtpSession.connectionType = MCOConnectionTypeStartTLS;        MCOSMTPOperation *smtpOperation = [self.smtpSession loginOperation];    [smtpOperation start:^(NSError * error) {        if (error == nil) {            NSLog(@"login account successed");        } else {            NSLog(@"login account failure: %@", error);        }    }];

2、使用MCOMessageBuilder构建邮件体的发送内容

    // 构建邮件体的发送内容    MCOMessageBuilder *messageBuilder = [[MCOMessageBuilder alloc] init];    messageBuilder.header.from = [MCOAddress addressWithDisplayName:@"张三" mailbox:@"111111@qq.com"];   // 发送人    messageBuilder.header.to = @[[MCOAddress addressWithMailbox:@"222222@qq.com"]];       // 收件人（多人）    messageBuilder.header.cc = @[[MCOAddress addressWithMailbox:@"@333333qq.com"]];      // 抄送（多人）    messageBuilder.header.bcc = @[[MCOAddress addressWithMailbox:@"444444@qq.com"]];    // 密送（多人）    messageBuilder.header.subject = @"测试邮件";    // 邮件标题    messageBuilder.textBody = @"hello world";           // 邮件正文        /*      如果邮件是回复或者转发，原邮件中往往有附件以及正文中有其他图片资源，     如果有需要你可将原文原封不动的也带过去，这里发送的正文就可以如下配置      */    NSString * bodyHtml = @"<p>我是原邮件正文</p>";    NSString *body = @"我是邮件回复的内容";    NSMutableString*fullBodyHtml = [NSMutableString stringWithFormat:@"%@<br/>-------------原始邮件-------------<br/>%@",[body stringByReplacingOccurrencesOfString:@"\n"withString:@"<br/>"],bodyHtml];    [messageBuilder setHTMLBody:fullBodyHtml];        // 添加正文里的附加资源    NSArray *inattachments = msgPaser.htmlInlineAttachments;    for (MCOAttachment*attachmentininattachments) {        [messageBuilder addRelatedAttachment:attachment];    //添加html正文里的附加资源（图片）    }        // 添加邮件附件    for (MCOAttachment*attachmentinattachments) {        [builder addAttachment:attachment];    //添加附件    }

3、将构建好的邮件发送出去

    // 发送邮件    NSData * rfc822Data =[messageBuilder data];    MCOSMTPSendOperation *sendOperation = [self.smtpSession sendOperationWithData:rfc822Data];    [sendOperation start:^(NSError *error) {        if (error == nil) {            NSLog(@"send message successed");        } else {            NSLog(@"send message failure: %@", error);        }    }];

IMAP（Internet Mail Access Protocol）

1、先创建MCOIMAPSession，配置imap邮箱参数

    MCOIMAPSession *imapSession = [[MCOIMAPSession alloc] init];    imapSession.hostname = hostname;    imapSession.port = port;    imapSession.username = username;    imapSession.password = passward;    imapSession.connectionType = MCOConnectionTypeTLS;        MCOIMAPOperation *imapOperation = [imapSession checkAccountOperation];    [imapOperation start:^(NSError * __nullable error) {        if (error == nil) {            NSLog(@"login account successed\n");                        // 在这里获取邮件，获取文件夹信息            [self loadIMAPFolder];        } else {            NSLog(@"login account failure: %@\n", error);        }    }];

2、获取文件夹目录

    MCOIMAPFetchFoldersOperation *imapFetchFolderOp = [imapSession fetchAllFoldersOperation];    [imapFetchFolderOp start:^(NSError * error, NSArray * folders) {        [_folderList addObjectsFromArray:folders];        [_folderTableView reloadData];    }];

3、获取收件箱邮件

    MCOIMAPMessagesRequestKind requestKind = (MCOIMAPMessagesRequestKind)    (MCOIMAPMessagesRequestKindHeaders | MCOIMAPMessagesRequestKindStructure |     MCOIMAPMessagesRequestKindInternalDate | MCOIMAPMessagesRequestKindHeaderSubject |     MCOIMAPMessagesRequestKindFlags);        // 获取收件箱信息（包含邮件总数等信息）    NSString *folderName = @"INBOX";    MCOIMAPFolderInfoOperation * folderInfoOperation = [imapSession folderInfoOperation:folderName];    [folderInfoOperation start:^(NSError *error, MCOIMAPFolderInfo * info) {                NSLog(@"total number: %d", info.messageCount);                NSInteger numberOfMessages = 10;        numberOfMessages -= 1;        MCOIndexSet *numbers = [MCOIndexSet indexSetWithRange:MCORangeMake([info messageCount] - numberOfMessages, numberOfMessages)];                MCOIMAPFetchMessagesOperation *imapMessagesFetchOp = [imapSession fetchMessagesByNumberOperationWithFolder:folderName                                                                                                                                                                      requestKind:requestKind                                                                                                                                                                            numbers:numbers];                // 异步获取邮件        [imapMessagesFetchOp start:^(NSError *error, NSArray *messages, MCOIndexSet *vanishedMessages) {            [_messageList addObjectsFromArray:messages];            [_messageTableView reloadData];        }];    }];

4、获取邮件头

    // 拿出一个邮件MCOIMAPMessage(里面包含邮件头等信息)    MCOIMAPMessage *message = _messageList [0];        // 使用MCOIMAPMessageRenderingOperation来获得邮件概要信息    NSString *uidKey = [NSString stringWithFormat:@"%d", message.uid];        MCOIMAPMessageRenderingOperation *messageRenderingOperation = [imapSession plainTextBodyRenderingOperationWithMessage:message folder:@"INBOX"];    [messageRenderingOperation start:^(NSString * plainTextBodyString,NSError * error) {                // plainTextBodyString为邮件的正文文本信息            }];

5、获取邮件内容，用MCOMessageParser解析邮件

    MCOIMAPFetchContentOperation * fetchContentOp = [self.imapSession fetchMessageOperationWithFolder:@"INBOX" uid:[message uid]];    [fetchContentOp start:^(NSError * error, NSData * data) {        if ([error code] != MCOErrorNone) {            return;        }                // 解析邮件内容        MCOMessageParser * msgPareser = [MCOMessageParser messageParserWithData:data];        NSString *content = [msgPareser htmlRenderingWithDelegate:self];

POP（Post Office Protocol）

1、先创建MCOIMAPSession，配置imap邮箱参数

    MCOPOPSession *popSession = [[MCOPOPSession alloc] init];    popSession.hostname = @"smtp.exmail.qq.com";    popSession.port = 995;    popSession.username = @"hello@qq.com";    popSession.password = @"passward";    popSession.connectionType = MCOConnectionTypeTLS;        // 登录邮箱    MCOPOPOperation *popOperation = [popSession checkAccountOperation];    [popOperation start:^(NSError * __nullable error) {        if (error == nil) {            NSLog(@"login account successed");        } else {            NSLog(@"login account failure: %@", error);        }    }];

2、获取邮件信息（同IMAP）

3、关于MCOMessageParser

不管是pop还是IMAP获取的邮件，最后都要得到MCOMessageParser来操作邮件内容。

    // MCOMessageHeader包含了邮件标题，时间等头信息    MCOMessageHeader *header = msgPaser.header;        // 获得邮件正文的HTML内容,一般使用webView加载    NSString * bodyHtml = [msgPaser htmlBodyRendering];        // 获取附件(多个)    NSMutableArray *attachments = [[NSMutableArray alloc] initWithArray:_msgPaser.attachments];        // 拿到一个附件MCOAttachment,可从中得到文件名，文件内容data    MCOAttachment *attachment = attachments[0];

将附件写入本地

    // 获取文件路径    NSString *tmpDirectory = NSTemporaryDirectory();    NSString *filePath = [tmpDirectorystringByAppendingPathComponent : attachment.filename ];    [attachmentData writeToFile:filePathatomically:YES];

当邮件正文有图片，在webview中如何加载图片，可通过注入js的方式修改html

定义脚本：

static NSString * mainJavascript = @"\var imageElements = function() {\var imageNodes = document.getElementsByTagName('img');\return [].slice.call(imageNodes);\};\\var findCIDImageURL = function() {\var images = imageElements();\\var imgLinks = [];\for (var i = 0; i < images.length; i++) {\var url = images[i].getAttribute('src');\if (url.indexOf('cid:') == 0 || url.indexOf('x-mailcore-image:') == 0)\imgLinks.push(url);\}\return JSON.stringify(imgLinks);\};\\var replaceImageSrc = function(info) {\var images = imageElements();\\for (var i = 0; i < images.length; i++) {\var url = images[i].getAttribute('src');\if (url.indexOf(info.URLKey) == 0) {\images[i].setAttribute('src', info.LocalPathKey);\break;\}\}\};\";

修改刚才获取的html内容

    MCOMessageParser * msgPareser = [MCOMessageParser messageParserWithData:data];    NSString *content = [msgPareser htmlRenderingWithDelegate:self];        NSMutableString * html = [NSMutableString string];    [html appendFormat:@"<html><head><script>%@</script></head>"     @"<body>%@</body><iframe src='x-mailcore-msgviewloaded:' style='width: 0px; height: 0px; border: none;'>"     @"</iframe></html>", mainJavascript, content];    [_webView loadHTMLString:content baseURL:nil];

设置webView代理

#pragma mark - webview- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {        NSURLRequest *responseRequest = [self webView:webView resource:nil willSendRequest:request redirectResponse:nil fromDataSource:nil];        if(responseRequest == request) {        return YES;    } else {        [webView loadRequest:responseRequest];        return NO;    }}- (NSURLRequest *)webView:(UIWebView *)sender resource:(id)identifier willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse fromDataSource:(id)dataSource {        if ([[[request URL] scheme] isEqualToString:@"x-mailcore-msgviewloaded"]) {        [self _loadImages];    }    return request;}// 加载网页中的图片- (void) _loadImages {    NSString * result = [webView stringByEvaluatingJavaScriptFromString:@"findCIDImageURL()"];    NSLog(@"-----加载网页中的图片-----");    NSLog(@"%@", result);        if (result == nil || [result isEqualToString:@""]) {        return;    }        NSData * data = [result dataUsingEncoding:NSUTF8StringEncoding];    NSError *error = nil;    NSArray * imagesURLStrings = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];        for (NSString * urlString in imagesURLStrings) {        MCOAbstractPart * part = nil;        NSURL *url = [NSURL URLWithString:urlString];                if ([MCOCIDURLProtocol isCID:url]) {            part = [self _partForCIDURL:url];        }        else if ([MCOCIDURLProtocol isXMailcoreImage:url]) {            NSString * specifier = [url resourceSpecifier];            NSString * partUniqueID = specifier;            part = [self _partForUniqueID:partUniqueID];        }                if (part == nil) {            continue;        }                NSString * partUniqueID = [part uniqueID];        MCOAttachment * attachment = (MCOAttachment *) [msgPaser partForUniqueID:partUniqueID];        NSData * data =[attachment data];                if (data!=nil) {                        //获取文件路径            NSString *tmpDirectory =NSTemporaryDirectory();            NSString *filePath=[tmpDirectory stringByAppendingPathComponent : attachment.filename ];                        NSFileManager *fileManger=[NSFileManager defaultManager];            if (![fileManger fileExistsAtPath:filePath]) {                //不存在就去请求加载                NSData *attachmentData=[attachment data];                [attachmentData writeToFile:filePath atomically:YES];                NSLog(@"资源：%@已经下载至%@", attachment.filename,filePath);            }                        NSURL * cacheURL = [NSURL fileURLWithPath:filePath];            NSDictionary * args =@{@"URLKey": urlString,@"LocalPathKey": cacheURL.absoluteString};                        NSString * jsonString = [self _jsonEscapedStringFromDictionary:args];            NSString * replaceScript = [NSString stringWithFormat:@"replaceImageSrc(%@)", jsonString];            [webView stringByEvaluatingJavaScriptFromString:replaceScript];        }    }}- (NSString *)_jsonEscapedStringFromDictionary:(NSDictionary *)dictionary {        NSData * json = [NSJSONSerialization dataWithJSONObject:dictionary options:0 error:nil];    NSString * jsonString = [[NSString alloc] initWithData:json encoding:NSUTF8StringEncoding];    return jsonString;}- (NSURL *) _cacheJPEGImageData:(NSData *)imageData withFilename:(NSString *)filename {        NSString * path = [[NSTemporaryDirectory()stringByAppendingPathComponent:filename]stringByAppendingPathExtension:@"jpg"];    [imageData writeToFile:path atomically:YES];    return [NSURL fileURLWithPath:path];}- (MCOAbstractPart *) _partForCIDURL:(NSURL *)url {    return [_message partForContentID:[url resourceSpecifier]];}- (MCOAbstractPart *) _partForUniqueID:(NSString *)partUniqueID {    return [_message partForUniqueID:partUniqueID];}

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