yanyi
/
Net


			
							1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402
							
<!doctype html>
<html lang="zh" class="no-js">
  <head>
    
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width,initial-scale=1">
      
        <meta name="description" content="Net document">
      
      
        <meta name="author" content="劉強東">
      
      
        <link rel="prev" href="error.html">
      
      
        <link rel="next" href="error-global.html">
      
      
      <link rel="icon" href="img/book-open.svg">
      <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.48">
    
    
        <title>单例捕获 - Net</title>
      
    
      <link rel="stylesheet" href="assets/stylesheets/main.6f8fc17f.min.css">
      
        
        <link rel="stylesheet" href="assets/stylesheets/palette.06af60db.min.css">
      
      
        <script src="https://unpkg.com/iframe-worker/shim"></script>
      
    
      <link rel="stylesheet" href="css/extra.css">
    
    <script>__md_scope=new URL(".",location),__md_hash=e=>[...e].reduce(((e,_)=>(e<<5)-e+_.charCodeAt(0)),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script>
    
      
  </head>
  
  
    <body dir="ltr" data-md-color-scheme="default" data-md-color-primary="white" data-md-color-accent="indigo">
  
    
    <input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
    <input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
    <label class="md-overlay" for="__drawer"></label>
    <div data-md-component="skip">
      
        
        <a href="#_1" class="md-skip">
          跳转至
        </a>
      
    </div>
    <div data-md-component="announce">
      
    </div>
    
    
<header class="md-header md-header--shadow" data-md-component="header">
  <nav class="md-header__inner md-grid" aria-label="页眉">
    <a href="index.html" title="Net" class="md-header__button md-logo" aria-label="Net" data-md-component="logo">
      
  <img src="img/book-open.svg" alt="logo">

    </a>
    <label class="md-header__button md-icon" for="__drawer">
      
      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 6h18v2H3zm0 5h18v2H3zm0 5h18v2H3z"/></svg>
    </label>
    <div class="md-header__title" data-md-component="header-title">
      <div class="md-header__ellipsis">
        <div class="md-header__topic">
          <span class="md-ellipsis">
            Net
          </span>
        </div>
        <div class="md-header__topic" data-md-component="header-topic">
          <span class="md-ellipsis">
            
              单例捕获
            
          </span>
        </div>
      </div>
    </div>
    
      
        <form class="md-header__option" data-md-component="palette">
  
    
    <input class="md-option" data-md-color-media="(prefers-color-scheme: light)" data-md-color-scheme="default" data-md-color-primary="white" data-md-color-accent="indigo"  aria-hidden="true"  type="radio" name="__palette" id="__palette_0">
    
  
</form>
      
    
      <script>var palette=__md_get("__palette");if(palette&&palette.color){if("(prefers-color-scheme)"===palette.color.media){var media=matchMedia("(prefers-color-scheme: light)"),input=document.querySelector(media.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: dark)']");palette.color.media=input.getAttribute("data-md-color-media"),palette.color.scheme=input.getAttribute("data-md-color-scheme"),palette.color.primary=input.getAttribute("data-md-color-primary"),palette.color.accent=input.getAttribute("data-md-color-accent")}for(var[key,value]of Object.entries(palette.color))document.body.setAttribute("data-md-color-"+key,value)}</script>
    
    
      <label class="md-header__button md-icon" for="__search">
        
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.52 6.52 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5"/></svg>
      </label>
      <div class="md-search" data-md-component="search" role="dialog">
  <label class="md-search__overlay" for="__search"></label>
  <div class="md-search__inner" role="search">
    <form class="md-search__form" name="search">
      <input type="text" class="md-search__input" name="query" aria-label="搜索" placeholder="搜索" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" required>
      <label class="md-search__icon md-icon" for="__search">
        
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.52 6.52 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5"/></svg>
        
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11z"/></svg>
      </label>
      <nav class="md-search__options" aria-label="查找">
        
          <a href="javascript:void(0)" class="md-search__icon md-icon" title="分享" aria-label="分享" data-clipboard data-clipboard-text="" data-md-component="search-share" tabindex="-1">
            
            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M18 16.08c-.76 0-1.44.3-1.96.77L8.91 12.7c.05-.23.09-.46.09-.7s-.04-.47-.09-.7l7.05-4.11c.54.5 1.25.81 2.04.81a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3c0 .24.04.47.09.7L8.04 9.81C7.5 9.31 6.79 9 6 9a3 3 0 0 0-3 3 3 3 0 0 0 3 3c.79 0 1.5-.31 2.04-.81l7.12 4.15c-.05.21-.08.43-.08.66 0 1.61 1.31 2.91 2.92 2.91s2.92-1.3 2.92-2.91A2.92 2.92 0 0 0 18 16.08"/></svg>
          </a>
        
        <button type="reset" class="md-search__icon md-icon" title="清空当前内容" aria-label="清空当前内容" tabindex="-1">
          
          <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 6.41 17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z"/></svg>
        </button>
      </nav>
      
        <div class="md-search__suggest" data-md-component="search-suggest"></div>
      
    </form>
    <div class="md-search__output">
      <div class="md-search__scrollwrap" tabindex="0" data-md-scrollfix>
        <div class="md-search-result" data-md-component="search-result">
          <div class="md-search-result__meta">
            正在初始化搜索引擎
          </div>
          <ol class="md-search-result__list" role="presentation"></ol>
        </div>
      </div>
    </div>
  </div>
</div>
    
    
      <div class="md-header__source">
        <a href="https://github.com/liangjingkanji/Net" title="前往仓库" class="md-source" data-md-component="source">
  <div class="md-source__icon md-icon">
    
    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.7.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2024 Fonticons, Inc.--><path d="M439.55 236.05 244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81"/></svg>
  </div>
  <div class="md-source__repository">
    GitHub
  </div>
</a>
      </div>
    
  </nav>
  
</header>
    
    <div class="md-container" data-md-component="container">
      
      
      <main class="md-main" data-md-component="main">
        <div class="md-main__inner md-grid">
          
            
              <div class="md-sidebar md-sidebar--primary" data-md-component="sidebar" data-md-type="navigation" >
                <div class="md-sidebar__scrollwrap">
                  <div class="md-sidebar__inner">
                    

<nav class="md-nav md-nav--primary" aria-label="导航栏" data-md-level="0">
  <label class="md-nav__title" for="__drawer">
    <a href="index.html" title="Net" class="md-nav__button md-logo" aria-label="Net" data-md-component="logo">
      
  <img src="img/book-open.svg" alt="logo">

    </a>
    Net
  </label>
  
    <div class="md-nav__source">
      <a href="https://github.com/liangjingkanji/Net" title="前往仓库" class="md-source" data-md-component="source">
  <div class="md-source__icon md-icon">
    
    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.7.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2024 Fonticons, Inc.--><path d="M439.55 236.05 244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81"/></svg>
  </div>
  <div class="md-source__repository">
    GitHub
  </div>
</a>
    </div>
  
  <ul class="md-nav__list" data-md-scrollfix>
    
      
    <li class="md-nav__item">
      <a href="index.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    使用
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="coroutine-request.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    协程请求
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="scope.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    作用域
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="sync-request.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    同步请求
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="request.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    请求参数
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="config.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    全局配置
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
      
        
    <a href="converter.html" class="md-nav__link">
      
  
  <span class="md-ellipsis">
    请求结果
  </span>
  

        <span class="md-nav__icon md-icon"></span>
      
    </a>
  

    </li>
  

    <li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
      
        
    <a href="auto-dialog.html" class="md-nav__link">
      
  
  <span class="md-ellipsis">
    自动化
  </span>
  

        <span class="md-nav__icon md-icon"></span>
      
    </a>
  

    </li>
  

    <li class="md-nav__item">
      <a href="thread.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    切换线程
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="view-model.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    ViewModel
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="track.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    异常追踪
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--active md-nav__item--nested">
      
        
        <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_12" checked>
        
          
          <label class="md-nav__link" for="__nav_12" id="__nav_12_label" tabindex="0">
            
  
  <span class="md-ellipsis">
    错误处理
  </span>
  

            <span class="md-nav__icon md-icon"></span>
          </label>
        
        <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_12_label" aria-expanded="true">
          <label class="md-nav__title" for="__nav_12">
            <span class="md-nav__icon md-icon"></span>
            错误处理
          </label>
          <ul class="md-nav__list" data-md-scrollfix>
            
              
    <li class="md-nav__item">
      <a href="error.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    错误处理
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--active">
      
      <input class="md-nav__toggle md-toggle" type="checkbox" id="__toc">
      
      
        <label class="md-nav__link md-nav__link--active" for="__toc">
          
  
  <span class="md-ellipsis">
    单例捕获
  </span>
  

          <span class="md-nav__icon md-icon"></span>
        </label>
      
      <a href="error-single.html" class="md-nav__link md-nav__link--active">
        
  
  <span class="md-ellipsis">
    单例捕获
  </span>
  

      </a>
      
        
<nav class="md-nav md-nav--secondary" aria-label="目录">
  
  
    <label class="md-nav__title" for="__toc">
      <span class="md-nav__icon md-icon"></span>
      目录
    </label>
    <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
      
        <li class="md-nav__item">
  <a href="#_1" class="md-nav__link">
    <span class="md-ellipsis">
      捕获请求
    </span>
  </a>
  
</li>
      
        <li class="md-nav__item">
  <a href="#_2" class="md-nav__link">
    <span class="md-ellipsis">
      捕获作用域
    </span>
  </a>
  
</li>
      
    </ul>
  
</nav>
      
    </li>
  

    <li class="md-nav__item">
      <a href="error-global.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    全局捕获
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="error-tip.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    自定义错误提示
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="error-throws.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    自定义异常抛出
  </span>
  

      </a>
    </li>
  

          </ul>
        </nav>
      
    </li>
  

    <li class="md-nav__item">
      <a href="okhttp-client.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    OkHttpClient
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="interceptor.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    拦截器
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="https.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    Https证书
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="cookie.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    Cookie
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="cache.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    缓存
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="tag.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    标签/额外
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="upload-file.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    上传文件
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="download-file.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    下载文件
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="progress.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    进度监听
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="cancel.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    取消请求
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="repeat-request.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    重复请求
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="debounce.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    搜索节流
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="fastest.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    最快请求结果
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="log-recorder.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    日志插件
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="log-notice.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    日志通知
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="timing.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    限时/定时请求
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="callback.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    Callback
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="interval.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    轮询器/倒计时
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="https://github.com/liangjingkanji/Net/discussions" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    社区讨论
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="issues.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    常见问题
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="updates.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    更新日志
  </span>
  

      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="api/index.html" class="md-nav__link">
        
  
  <span class="md-ellipsis">
    3.x文档
  </span>
  

      </a>
    </li>
  

  </ul>
</nav>
                  </div>
                </div>
              </div>
            
            
              <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
                <div class="md-sidebar__scrollwrap">
                  <div class="md-sidebar__inner">
                    

<nav class="md-nav md-nav--secondary" aria-label="目录">
  
  
    <label class="md-nav__title" for="__toc">
      <span class="md-nav__icon md-icon"></span>
      目录
    </label>
    <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
      
        <li class="md-nav__item">
  <a href="#_1" class="md-nav__link">
    <span class="md-ellipsis">
      捕获请求
    </span>
  </a>
  
</li>
      
        <li class="md-nav__item">
  <a href="#_2" class="md-nav__link">
    <span class="md-ellipsis">
      捕获作用域
    </span>
  </a>
  
</li>
      
    </ul>
  
</nav>
                  </div>
                </div>
              </div>
            
          
            <div class="md-content" data-md-component="content">
              <article class="md-content__inner md-typeset">
                
                  
  <h1>单例捕获</h1>

<p>捕获当前请求/作用域错误, 将不会再被全局错误处理</p>
<h2 id="_1">捕获请求<a class="headerlink" href="#_1" title="Permanent link">&para;</a></h2>
<p>一个请求发生错误会取消当前作用域内所有请求, 但单独捕获后不会再影响其他请求</p>
<p>例如
<div class="language-kotlin highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="n">scopeNetLife</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="w">    </span><span class="n">Get</span><span class="o">&lt;</span><span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="s">&quot;path&quot;</span><span class="p">).</span><span class="na">await</span><span class="p">()</span><span class="w"> </span><span class="c1">// 失败</span>
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="w">    </span><span class="n">Get</span><span class="o">&lt;</span><span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="s">&quot;path2&quot;</span><span class="p">).</span><span class="na">await</span><span class="p">()</span><span class="w"> </span><span class="c1">// 上面失败, 此处也不会执行</span>
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="p">}</span>
</span></code></pre></div></p>
<p>捕获第一个协程避免终止后续执行
<div class="language-kotlin highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="n">scopeNetLife</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-1-2"><a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="w">    </span><span class="k">try</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-1-3"><a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a><span class="w">        </span><span class="n">Get</span><span class="o">&lt;</span><span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="s">&quot;path&quot;</span><span class="p">).</span><span class="na">await</span><span class="p">()</span><span class="w"> </span><span class="c1">// 失败</span>
</span><span id="__span-1-4"><a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="w">    </span><span class="p">}</span><span class="w"> </span><span class="k">catch</span><span class="p">(</span><span class="n">e</span><span class="p">:</span><span class="n">Exception</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-1-5"><a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="w">    </span><span class="p">}</span>
</span><span id="__span-1-6"><a id="__codelineno-1-6" name="__codelineno-1-6" href="#__codelineno-1-6"></a><span class="w">    </span><span class="n">Get</span><span class="o">&lt;</span><span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="s">&quot;path2&quot;</span><span class="p">).</span><span class="na">await</span><span class="p">()</span><span class="w"> </span><span class="c1">// 上面失败, 此处继续执行</span>
</span><span id="__span-1-7"><a id="__codelineno-1-7" name="__codelineno-1-7" href="#__codelineno-1-7"></a><span class="p">}</span>
</span></code></pre></div>
当然如果创建不同的作用域分别请求那是互不影响的
<div class="language-kotlin highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="n">scopeNetLife</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-2-2"><a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="w">    </span><span class="n">Get</span><span class="o">&lt;</span><span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="s">&quot;path&quot;</span><span class="p">).</span><span class="na">await</span><span class="p">()</span><span class="w"> </span><span class="c1">// 失败</span>
</span><span id="__span-2-3"><a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="p">}</span>
</span><span id="__span-2-4"><a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="n">scopeNetLife</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-2-5"><a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="w">    </span><span class="n">Get</span><span class="o">&lt;</span><span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="s">&quot;path2&quot;</span><span class="p">).</span><span class="na">await</span><span class="p">()</span><span class="w"> </span><span class="c1">// 上面失败, 此处完全不受影响</span>
</span><span id="__span-2-6"><a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><br></p>
<h2 id="_2">捕获作用域<a class="headerlink" href="#_2" title="Permanent link">&para;</a></h2>
<div class="language-kotlin highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="n">scope</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="w">    </span><span class="kd">val</span><span class="w"> </span><span class="nv">data</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Get</span><span class="o">&lt;</span><span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="s">&quot;http://www.error.com/&quot;</span><span class="p">).</span><span class="na">await</span><span class="p">()</span>
</span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="p">}.</span><span class="na">catch</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="w">    </span><span class="c1">// 协程内发生错误回调, it为异常对象</span>
</span><span id="__span-3-5"><a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="p">}.</span><span class="na">finally</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-3-6"><a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="w">    </span><span class="c1">// 协程执行完毕回调(不论成败), it为异常对象</span>
</span><span id="__span-3-7"><a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="p">}</span>
</span></code></pre></div>
<table>
<thead>
<tr>
<th>函数</th>
<th>区别</th>
</tr>
</thead>
<tbody>
<tr>
<td>catch</td>
<td>发生错误后回调, 取消不回调 <br>不会再执行全局错误处理, 可使用<code>handleError</code>再次传递给全局</td>
</tr>
<tr>
<td>finally</td>
<td>执行完毕回调(不论成败), 取消作用域时<code>it</code>为<code>CancellationException</code> <br>执行全局错误处理</td>
</tr>
</tbody>
</table>


              </article>
            </div>
          
          
<script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script>
        </div>
        
          <button type="button" class="md-top md-icon" data-md-component="top" hidden>
  
  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8z"/></svg>
  回到页面顶部
</button>
        
      </main>
      
        
<!-- Footer -->
<footer class="md-footer">

    <!-- Link to previous and/or next page -->
    
    <nav class="md-footer__inner md-grid" aria-label="footer.title">

        <!-- Link to previous page -->
        
        <a href="error.html" class="md-footer__link md-footer__link--prev" rel="prev">
            <div class="md-footer__button md-icon">
                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11z"/></svg>
            </div>
            <div class="md-footer__title">
                <div class="md-ellipsis">
              <span class="md-footer__direction">
                上一页
              </span>
                    错误处理
                </div>
            </div>
        </a>
        

        <!-- Link to next page -->
        
        <a href="error-global.html" class="md-footer__link md-footer__link--next" rel="next">
            <div class="md-footer__title">
                <div class="md-ellipsis">
              <span class="md-footer__direction">
                下一页
              </span>
                    全局捕获
                </div>
            </div>
            <div class="md-footer__button md-icon">
                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11z"/></svg>
            </div>
        </a>
        
    </nav>
    

    <!-- Further information -->
    <div class="md-footer-meta md-typeset">
        <div class="md-footer-meta__inner md-grid">

            <!-- Copyright and theme information -->
            <div class="md-footer-copyright">
                
                <a href="https://github.com/liangjingkanji" target="_blank" rel="noopener">
                    <div class="md-footer-copyright__highlight">
                        Copyright &copy; 2018 - 2023 劉強東
                    </div>
                </a>
                
                
            </div>

            <!-- Social links -->
            <div class="md-social">
  
    
    <a href="https://github.com/liangjingkanji" target="_blank" rel="noopener" title="github.com" class="md-social__link">
      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><!--! Font Awesome Free 6.7.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2024 Fonticons, Inc.--><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6m-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3m44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9M244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8M97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1m-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7m32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1m-11.4-14.7c-1.6 1-1.6 3.6 0 5.9s4.3 3.3 5.6 2.3c1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2"/></svg>
    </a>
  
    
    <a href="https://raw.githubusercontent.com/liangjingkanji/liangjingkanji/master/img/group-qrcode.png" target="_blank" rel="noopener" title="raw.githubusercontent.com" class="md-social__link">
      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--! Font Awesome Free 6.7.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2024 Fonticons, Inc.--><path d="M433.754 420.445c-11.526 1.393-44.86-52.741-44.86-52.741 0 31.345-16.136 72.247-51.051 101.786 16.842 5.192 54.843 19.167 45.803 34.421-7.316 12.343-125.51 7.881-159.632 4.037-34.122 3.844-152.316 8.306-159.632-4.037-9.045-15.25 28.918-29.214 45.783-34.415-34.92-29.539-51.059-70.445-51.059-101.792 0 0-33.334 54.134-44.859 52.741-5.37-.65-12.424-29.644 9.347-99.704 10.261-33.024 21.995-60.478 40.144-105.779C60.683 98.063 108.982.006 224 0c113.737.006 163.156 96.133 160.264 214.963 18.118 45.223 29.912 72.85 40.144 105.778 21.768 70.06 14.716 99.053 9.346 99.704"/></svg>
    </a>
  
    
    <a href="https://github.com/liangjingkanji/Net/discussions" target="_blank" rel="noopener" title="github.com" class="md-social__link">
      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!--! Font Awesome Free 6.7.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2024 Fonticons, Inc.--><path d="M391.17 103.47h-38.63v109.7h38.63ZM285 103h-38.63v109.75H285ZM120.83 0 24.31 91.42v329.16h115.83V512l96.53-91.42h77.25L487.69 256V0Zm328.24 237.75-77.22 73.12h-77.24l-67.6 64v-64h-86.87V36.58h308.93Z"/></svg>
    </a>
  
</div>
        </div>
    </div>
</footer>
      
    </div>
    <div class="md-dialog" data-md-component="dialog">
      <div class="md-dialog__inner md-typeset"></div>
    </div>
    
    
    <script id="__config" type="application/json">{"base": ".", "features": ["navigation.top", "navigation.prune", "navigation.footer", "navigation.instant", "search.highlight", "search.suggest", "search.share", "content.code.copy", "content.code.annotate"], "search": "assets/javascripts/workers/search.6ce7567c.min.js", "translations": {"clipboard.copied": "\u5df2\u590d\u5236", "clipboard.copy": "\u590d\u5236", "search.result.more.one": "\u5728\u8be5\u9875\u4e0a\u8fd8\u6709 1 \u4e2a\u7b26\u5408\u6761\u4ef6\u7684\u7ed3\u679c", "search.result.more.other": "\u5728\u8be5\u9875\u4e0a\u8fd8\u6709 # \u4e2a\u7b26\u5408\u6761\u4ef6\u7684\u7ed3\u679c", "search.result.none": "\u6ca1\u6709\u627e\u5230\u7b26\u5408\u6761\u4ef6\u7684\u7ed3\u679c", "search.result.one": "\u627e\u5230 1 \u4e2a\u7b26\u5408\u6761\u4ef6\u7684\u7ed3\u679c", "search.result.other": "# \u4e2a\u7b26\u5408\u6761\u4ef6\u7684\u7ed3\u679c", "search.result.placeholder": "\u952e\u5165\u4ee5\u5f00\u59cb\u641c\u7d22", "search.result.term.missing": "\u7f3a\u5c11", "select.version": "\u9009\u62e9\u5f53\u524d\u7248\u672c"}}</script>
    
    
      <script src="assets/javascripts/bundle.83f73b43.min.js"></script>
      
    
  </body>
</html>