升级到 Solo 4.3 出现故障,求助

本贴最后更新于 1960 天前,其中的信息可能已经水流花落

从 4.2 版本升级到 4.3,因为 SQL 语法不兼容(我用的 H2),我手动升级数据库的修改,在修改 B3_SOLO_OPTION 时,本来要修改 version 为 4.3,结果把手抖把所有的 OPTIONVALUE 都更新为 4.3。。。

没办法,我找来了 3.4 版本这个表的数据导入,结果是升级成功,但是在打开管理后台报 500,

后台日志如:

[INFO ]-[2020-08-09 17:04:59]-[org.b3log.solo.processor.OAuthProcessor:205]: Logged in [name=guobingwei, remoteAddr=115.171.12.157] with oauth
[INFO ]-[2020-08-09 17:05:00]-[org.b3log.solo.service.ExportService:338]: Backup all articles to HacPai....
[ERROR]-[2020-08-09 17:05:01]-[org.b3log.solo.service.ExportService:396]: Exports articles to HacPai failed:null
[ERROR]-[2020-08-09 17:05:03]-[org.b3log.solo.processor.console.AdminConsole:165]: Admin index render failed
java.lang.NullPointerException: null
	at org.b3log.solo.processor.console.AdminConsole.showAdminIndex(AdminConsole.java:148) ~[solo/:?]
	at org.b3log.solo.processor.console.AdminConsole_$$_jvst5a4_44._d12showAdminIndex(AdminConsole_$$_jvst5a4_44.java) ~[solo/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_212]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_212]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212]
	at org.b3log.latke.ioc.JavassistMethodHandler.invoke(JavassistMethodHandler.java:108) ~[latke-core-3.4.10.jar:?]
	at org.b3log.solo.processor.console.AdminConsole_$$_jvst5a4_44.showAdminIndex(AdminConsole_$$_jvst5a4_44.java) ~[solo/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_212]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_212]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212]
	at org.b3log.latke.http.handler.InvokeHandler.handle(InvokeHandler.java:45) ~[latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.RequestContext.handle(RequestContext.java:548) ~[latke-core-3.4.10.jar:?]
	at org.b3log.solo.processor.console.ConsoleAuthMidware.handle(ConsoleAuthMidware.java:45) ~[solo/:?]
	at org.b3log.solo.processor.console.ConsoleAuthMidware_$$_jvst5a4_4d._d4handle(ConsoleAuthMidware_$$_jvst5a4_4d.java) ~[solo/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_212]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_212]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212]
	at org.b3log.latke.ioc.JavassistMethodHandler.invoke(JavassistMethodHandler.java:108) ~[latke-core-3.4.10.jar:?]
	at org.b3log.solo.processor.console.ConsoleAuthMidware_$$_jvst5a4_4d.handle(ConsoleAuthMidware_$$_jvst5a4_4d.java) ~[solo/:?]
	at org.b3log.latke.http.RequestContext.handle(RequestContext.java:548) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.handler.RouteHandler.handle(RouteHandler.java:200) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.RequestContext.handle(RequestContext.java:548) [latke-core-3.4.10.jar:?]
	at org.b3log.solo.processor.PermalinkHandler.handle(PermalinkHandler.java:71) [solo/:?]
	at org.b3log.latke.http.RequestContext.handle(RequestContext.java:548) [latke-core-3.4.10.jar:?]
	at org.b3log.solo.processor.InitCheckHandler.handle(InitCheckHandler.java:59) [solo/:?]
	at org.b3log.latke.http.RequestContext.handle(RequestContext.java:548) [latke-core-3.4.10.jar:?]
	at org.b3log.solo.processor.SkinHandler.handle(SkinHandler.java:59) [solo/:?]
	at org.b3log.latke.http.RequestContext.handle(RequestContext.java:548) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.handler.StaticResourceHandler.handle(StaticResourceHandler.java:36) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.RequestContext.handle(RequestContext.java:548) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.Dispatcher.handle(Dispatcher.java:91) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.ServerHandler.channelRead0(ServerHandler.java:78) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.ServerHandler.channelRead0(ServerHandler.java:34) [latke-core-3.4.10.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at org.b3log.latke.http.WebSocketHandler.handleHttpRequest(WebSocketHandler.java:90) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.WebSocketHandler.channelRead0(WebSocketHandler.java:47) [latke-core-3.4.10.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [netty-codec-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) [netty-codec-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296) [netty-codec-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:792) [netty-transport-native-epoll-4.1.49.Final-linux-x86_64.jar:4.1.49.Final]
	at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:475) [netty-transport-native-epoll-4.1.49.Final-linux-x86_64.jar:4.1.49.Final]
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378) [netty-transport-native-epoll-4.1.49.Final-linux-x86_64.jar:4.1.49.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [netty-common-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.49.Final.jar:4.1.49.Final]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
[ERROR]-[2020-08-09 17:05:03]-[org.b3log.latke.http.renderer.AbstractFreeMarkerRenderer:104]: Renders template [admin/admin-index.ftl] failed [Request [
    method=GET,
    URI=/admin-index.do,
    contentType=null,
    remoteAddr=115.171.12.157,
    headers=[
        Host=guobingwei.tech:80
        X-Real-IP=115.171.12.157
        Connection=close
        Upgrade-Insecure-Requests=1
        User-Agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36
        Accept=text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
        Referer=http://guobingwei.tech/
        Accept-Encoding=gzip, deflate
        Accept-Language=zh-CN,zh;q=0.9,en;q=0.8
        Cookie=LATKE_SESSION_ID=uB9A8avZu3Pif7xb; solo=f9f0f612609415c6028ed231f814861c247e7ee42393f35ed8986d360bcca54f81ee7ac8607487a4a57020234298b474edd3a4ededc06229e5cd45cf64660901
        content-length=0
    ]
]]
freemarker.core.InvalidReferenceException: The following has evaluated to null or missing:
==> faviconURL  [in template "common-template/macro-common_head.ftl" at line 43, column 43]

----
Tip: If the failing expression is known to legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----

----
FTL stack trace ("~" means nesting-related):
	- Failed at: ${faviconURL}  [in template "common-template/macro-common_head.ftl" in macro "head" at line 43, column 41]
	- Reached through: @head title="${adminConsoleLabel} - $...  [in template "admin/admin-index.ftl" at line 18, column 5]
----
	at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.EvalUtil.coerceModelToTextualCommon(EvalUtil.java:481) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:401) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:370) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:100) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.DollarVariable.accept(DollarVariable.java:63) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.Environment.visit(Environment.java:370) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.Environment.invokeMacroOrFunctionCommonPart(Environment.java:876) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.Environment.invokeMacro(Environment.java:812) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.UnifiedCall.accept(UnifiedCall.java:84) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.Environment.visit(Environment.java:334) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.Environment.visit(Environment.java:340) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.core.Environment.process(Environment.java:313) ~[freemarker-2.3.30.jar:2.3.30]
	at freemarker.template.Template.process(Template.java:383) ~[freemarker-2.3.30.jar:2.3.30]
	at org.b3log.latke.http.renderer.AbstractFreeMarkerRenderer.genHTML(AbstractFreeMarkerRenderer.java:127) ~[latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.renderer.AbstractFreeMarkerRenderer.render(AbstractFreeMarkerRenderer.java:98) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.Dispatcher.renderResponse(Dispatcher.java:120) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.Dispatcher.handle(Dispatcher.java:92) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.ServerHandler.channelRead0(ServerHandler.java:78) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.ServerHandler.channelRead0(ServerHandler.java:34) [latke-core-3.4.10.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at org.b3log.latke.http.WebSocketHandler.handleHttpRequest(WebSocketHandler.java:90) [latke-core-3.4.10.jar:?]
	at org.b3log.latke.http.WebSocketHandler.channelRead0(WebSocketHandler.java:47) [latke-core-3.4.10.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [netty-codec-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) [netty-codec-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296) [netty-codec-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:792) [netty-transport-native-epoll-4.1.49.Final-linux-x86_64.jar:4.1.49.Final]
	at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:475) [netty-transport-native-epoll-4.1.49.Final-linux-x86_64.jar:4.1.49.Final]
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378) [netty-transport-native-epoll-4.1.49.Final-linux-x86_64.jar:4.1.49.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [netty-common-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.49.Final.jar:4.1.49.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.49.Final.jar:4.1.49.Final]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
[root@iZ94ixkobxaZ ~]# client_loop: send disconnect: Broken pipecode

求救。。。

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请输入回帖内容 ...
  • guobingwei

    是的,手改的。把 option 表数据搞乱了...

    1 回复
  • 其他回帖
  • guobingwei

    原来 4.3 版本在 option 表中新增了字段,没办法,我本地启动项目,根据初始化的表结构在线上重新创建 option 表,现在好使了

    教训:升级前一定要备份数据!!!升级不规范,亲人两行泪

  • guobingwei

    我试试...

  • guobingwei

    image.png

    看代码,这里 skin 查出来是空,报空指针了。我把数据库 Option 表里的 OID 改为了 skin(之前是 skins),还是不行呢

  • 查看全部回帖

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  • Notion

    Notion - The all-in-one workspace for your notes, tasks, wikis, and databases.

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  • HBase

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  • 前端

    前端技术一般分为前端设计和前端开发,前端设计可以理解为网站的视觉设计,前端开发则是网站的前台代码实现,包括 HTML、CSS 以及 JavaScript 等。

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  • 支付宝

    支付宝是全球领先的独立第三方支付平台,致力于为广大用户提供安全快速的电子支付/网上支付/安全支付/手机支付体验,及转账收款/水电煤缴费/信用卡还款/AA 收款等生活服务应用。

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  • 知乎

    知乎是网络问答社区,连接各行各业的用户。用户分享着彼此的知识、经验和见解,为中文互联网源源不断地提供多种多样的信息。

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  • C++

    C++ 是在 C 语言的基础上开发的一种通用编程语言,应用广泛。C++ 支持多种编程范式,面向对象编程、泛型编程和过程化编程。

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  • WebClipper

    Web Clipper 是一款浏览器剪藏扩展,它可以帮助你把网页内容剪藏到本地。

    3 引用 • 9 回帖 • 3 关注
  • GitHub

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  • IPFS

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  • Hibernate

    Hibernate 是一个开放源代码的对象关系映射框架,它对 JDBC 进行了非常轻量级的对象封装,使得 Java 程序员可以随心所欲的使用对象编程思维来操纵数据库。

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  • 职场

    找到自己的位置,萌新烦恼少。

    127 引用 • 1708 回帖 • 1 关注
  • NetBeans

    NetBeans 是一个始于 1997 年的 Xelfi 计划,本身是捷克布拉格查理大学的数学及物理学院的学生计划。此计划延伸而成立了一家公司进而发展这个商用版本的 NetBeans IDE,直到 1999 年 Sun 买下此公司。Sun 于次年(2000 年)六月将 NetBeans IDE 开源,直到现在 NetBeans 的社群依然持续增长。

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  • V2Ray
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  • DevOps

    DevOps(Development 和 Operations 的组合词)是一组过程、方法与系统的统称,用于促进开发(应用程序/软件工程)、技术运营和质量保障(QA)部门之间的沟通、协作与整合。

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