linux部署.net core api并且实现上传图片
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2022-05-27 20:27:12
为了体验.net在linux上运行,所以使用HttpClient东借西抄做了一个简单的api上传功能。 第一步,简单的上传功能: 然后自己再写一个api程序做为服务端用来接收请求,如下代码: api程序记得修改Program.cs 当时我访问出现502就是因为这个原因 然后本地测试可以之后再将api ......
为了体验.net在linux上运行,所以使用httpclient东借西抄做了一个简单的api上传功能。
第一步,简单的上传功能:
public class uploadhelper { private static readonly string controller = "/api/upload"; /// <summary> /// 使用httpclient上传附件 /// </summary> /// <param name="filepath"></param> /// <returns></returns> public static async task<string> upload(string filepath) { filestream filestream = new filestream(filepath, filemode.open, fileaccess.read, fileshare.read); httpcontent httpcontent = new streamcontent(filestream); httpcontent.headers.contenttype = mediatypeheadervalue.parse("multipart/form-data"); string filename = filepath.substring(filepath.lastindexof("\\") + 2); namevaluecollection namevaluecollection = new namevaluecollection(); namevaluecollection.add("user-agent", "user-agent mozilla/5.0 (windows nt 10.0; wow64; trident/7.0; touch; malnjs; rv:11.0) like gecko"); using (multipartformdatacontent mulcontent = new multipartformdatacontent("----webkitformboundaryrxrbklheecbfhiy")) { mulcontent.add(httpcontent, "file", filename); string ip = configurationprovider.configuration.getsection("webapi:httpaddresss").value; string url = "http://"+ip + controller; return await httphelper.posthttpclient(url, namevaluecollection, mulcontent); } } } public class httphelper { /// <summary> /// httpclient post请求 /// </summary> /// <param name="url"></param> /// <param name="requestheaders"></param> /// <param name="multipartformdatacontent"></param> /// <returns></returns> public static async task<string> posthttpclient(string url, namevaluecollection requestheaders, multipartformdatacontent multipartformdatacontent) { var handler = new httpclienthandler(); handler.servercertificatecustomvalidationcallback = delegate { return true; }; using (httpclient client = new httpclient(handler)) { client.maxresponsecontentbuffersize = 256000; client.defaultrequestheaders.add(requestheaders.keys[0],requestheaders[requestheaders.keys[0]]); httpresponsemessage httpresponsemessage = await client.postasync(url, multipartformdatacontent); httpresponsemessage.ensuresuccessstatuscode(); string result = httpresponsemessage.content.readasstringasync().result; return result; } } }
然后自己再写一个api程序做为服务端用来接收请求,如下代码:
[route("api/[controller]")] [apicontroller] public class uploadcontroller : controllerbase { private ihostingenvironment hostingenvironment; public uploadcontroller(ihostingenvironment _hostingenvironment) { hostingenvironment = _hostingenvironment; } [httppost] public iactionresult upload() { try { var imgfile = request.form.files[0]; int index = imgfile.filename.lastindexof('.'); //获取后缀名 string extension = imgfile.filename.substring(index, imgfile.filename.length - index); string webpath = hostingenvironment.contentrootpath; string guid = guid.newguid().tostring().replace("-", ""); string newfilename = guid + extension; datetime datetime = datetime.now; //linux环境目录为/{1}/ string path = string.format(@"{0}/temporaryfile/{1}/{2}/{3}", "/home/www", datetime.year.tostring(), datetime.month.tostring() , datetime.day.tostring()); if (!directory.exists(path)) directory.createdirectory(path); string imgsrc = path + @"/" + newfilename; using (filestream fs = system.io.file.create(imgsrc)) { imgfile.copyto(fs); fs.flush(); } return new jsonresult(new { message = "ok", code = 200 }); } catch (exception e) { return new jsonresult(new {message=e.message,code=500}); } }
api程序记得修改program.cs
public class program { public static void main(string[] args) { createwebhostbuilder(args).build().run(); } //本地启动 //public static iwebhostbuilder createwebhostbuilder(string[] args) => // webhost.createdefaultbuilder(args).useurls("http://*:5000") // .usestartup<startup>(); //linux启动 public static iwebhostbuilder createwebhostbuilder(string[] args) => webhost.createdefaultbuilder(args) .usestartup<startup>(); }
当时我访问出现502就是因为这个原因
然后本地测试可以之后再将api部署到linux服务器,部署linux需要一下工具:
xftp:将发布好的api程序传到linux,
ngnix:反向代理,参考菜鸟教程,我的配置是这个,记得将5000加入防火墙,并且网络策略这个端口:
user www www; worker_processes 2; #设置值和cpu核心数一致 error_log /usr/local/webserver/nginx/logs/nginx_error.log crit; #日志位置和日志级别 pid /usr/local/webserver/nginx/nginx.pid; #specifies the value for maximum file descriptors that can be opened by this process. worker_rlimit_nofile 65535; events { use epoll; worker_connections 65535; } http { #下面是server虚拟主机的配置 server { listen 80; location / { proxy_pass http://localhost:5000; proxy_http_version 1.1; proxy_set_header upgrade $http_upgrade; proxy_set_header connection keep-alive; proxy_set_header host $host; proxy_cache_bypass $http_upgrade; } } }
具体的部署过程网上很多教程。部署好之后就可以试着用postman或浏览器输入地址访问了。
因为linux的机制当你退出linux后就无法访问,所以需要配置进程守护,我的配置如下
[program:blogapi] command=dotnet blogapi.dll directory=/home/wwwroot/blogapi/ stderr_logfile=/var/log/blogapi.error.log stdout_logfile=/var/log/blogapi.stdout.log environment=aspnetcore_environment=production user=root stopsignal=int autostart=true autorestart=true startsecs=3
更新重启守护进程,然后你就可以随时随地访问了,
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