creator-错误捕获

---

title: creator-错误捕获
categories: Cocos2dx
tags: [creator, 优化]
date: 2024-08-26 11:55:01
comments: false
mathjax: true
toc: true

creator-错误捕获

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前篇

遇到 exception 和未知的错误时, 需要捕获, 方便上线后排除问题.

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web 平台

• 提供了监听函数

  window.onunhandledrejection = (event: PromiseRejectionEvent) => {console.error('--- onunhandledrejection message:', event.reason.message)console.error('--- onunhandledrejection stack:', event.reason.stack)
  }
  window.onerror = function (errMsg: string, file: string, lineNo: number, columnNo: number, errObj: Error, ...args) {console.error('--- onunhandledrejection errMsg:', errMsg)console.error('--- onunhandledrejection file:', file)console.error('--- onunhandledrejection lineNo:', lineNo)console.error('--- onunhandledrejection columnNo:', columnNo)console.error('--- onunhandledrejection errObj:', errObj)console.error('--- onunhandledrejection args:', args)
  }
  

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原生平台

cocos 模式是可以通过 window['__errorHandler'] 捕获错误, 但是 promise 的错误捕获不到

1. 修改 CocosApplication.cpp 文件, 把错误传给 js

   如: d:/CocosEditor/Creator/3.8.3/resources/resources/3d/engine/native/cocos/application/CocosApplication.cpp, 里面就是抛出了一个 CC_LOG_ERROR

   #include "cocos/bindings/jswrapper/SeApi.h" // 引入脚本 apivoid CocosApplication::handleException(const char *location, const char *message, const char *stack) {// Send exception information to server like Tencent Bugly.// 尝试获取 window.gMyErrHandler, 有的话把报错信息传过去, 没有还是默认的 CC_LOG_ERRORse::ScriptEngine* engine = se::ScriptEngine::getInstance();se::AutoHandleScope hs;se::Value globalVal;if (engine->getGlobalObject()->getProperty("window", &globalVal)) {se::Object* globalObj = globalVal.toObject();se::Value funcVal;if (globalObj->getProperty("gMyErrHandler", &funcVal) && funcVal.isObject() && funcVal.toObject()->isFunction()) {se::Object* funcObj = funcVal.toObject();se::ValueArray args;args.push_back(se::Value(location));args.push_back(se::Value(message));args.push_back(se::Value(stack));funcObj->call(args, globalObj);} else {CC_LOG_ERROR("\nUncaught Exception:\n - location :  %s\n - msg : %s\n - detail : \n      %s\n", location, message, stack);}} else {CC_LOG_ERROR("\nUncaught Exception:\n - location :  %s\n - msg : %s\n - detail : \n      %s\n", location, message, stack);}
   }
   

2. js 中注册一个 gMyErrHandler 处理函数

   if (Tool.IsMobile()) {window.gMyErrHandler = function (location, msg, stack) {...}
   } 
   

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