element-ui.common.js:23190 Uncaught (in promise)
时间: 2023-11-09 07:17:03 浏览: 163
I'm sorry, but I can't help with that specific error message without more context about your code and the specific circumstances in which it occurs. Can you provide more details or explain the issue you're facing?
相关问题
Access to XMLHttpRequest at 'http://localhost:8080/springprojecttraining/api/updateUser' from origin 'http://localhost:8081' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. xhr.js:160 POST http://localhost:8080/springprojecttraining/api/updateUser net::ERR_FAILED 200 dispatchXhrRequest @ xhr.js:160 xhrAdapter @ xhr.js:11 dispatchRequest @ dispatchRequest.js:59 Promise.then (async) request @ Axios.js:51 Axios.<computed> @ Axios.js:71 wrap @ bind.js:9 submitForm @ user.vue:346 click @ user.vue:407 invokeWithErrorHandling @ vue.esm.js:3735 invoker @ vue.esm.js:1552 invokeWithErrorHandling @ vue.esm.js:3735 Vue.$emit @ vue.esm.js:2821 handleClick @ element-ui.common.js:9465 invokeWithErrorHandling @ vue.esm.js:3735 invoker @ vue.esm.js:1552 original_1._wrapper @ vue.esm.js:8013 createError.js:16 Uncaught (in promise) Error: Network Error at createError (createError.js:16:1) at XMLHttpRequest.handleError (xhr.js:69:1)为什么报错 如何解决呢
这是因为浏览器实施了同源策略(Same-Origin Policy)限制,导致从一个源访问另一个源时会被拒绝,特别是在前端使用JavaScript发起Ajax请求时。在这种情况下,需要进行跨域资源共享(CORS)配置。
解决方法如下:
1. 在服务器端配置CORS,允许指定的源或所有源访问:
- 允许指定源访问:
在服务器端的响应中添加Access-Control-Allow-Origin头,指定允许访问的源,例如:
```
Access-Control-Allow-Origin: http://localhost:8081
```
- 允许所有源访问:
在服务器端的响应中添加Access-Control-Allow-Origin头,指定允许所有源访问,例如:
```
Access-Control-Allow-Origin: *
```
2. 在前端使用代理服务器(Proxy)转发请求,以绕过浏览器的同源策略限制。
例如,使用Vue.js,可以在vue.config.js中添加以下配置:
```
module.exports = {
devServer: {
proxy: {
'/springprojecttraining': {
target: 'http://localhost:8080',
changeOrigin: true
}
}
}
}
```
这样,在前端使用axios等工具时,只需要将请求的URL改为代理服务器地址,例如:
```
axios.post('/springprojecttraining/api/updateUser', data)
```
这样就可以解决跨域问题了。
index.vue:202 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'type') at _callee$ (index.vue:202:1) at tryCatch (regeneratorRuntime.js:44:1) at Generator.eval (regeneratorRuntime.js:125:1) at Generator.eval [as next] (regeneratorRuntime.js:69:1) at asyncGeneratorStep (asyncToGenerator.js:3:1) at _next (asyncToGenerator.js:22:1) at eval (asyncToGenerator.js:27:1) at new Promise (<anonymous>) at eval (asyncToGenerator.js:19:1) at VueComponent.handleNodeClick (index.vue:228:1) _callee$ @ index.vue:202 tryCatch @ regeneratorRuntime.js:44 eval @ regeneratorRuntime.js:125 eval @ regeneratorRuntime.js:69 asyncGeneratorStep @ asyncToGenerator.js:3 _next @ asyncToGenerator.js:22 eval @ asyncToGenerator.js:27 eval @ asyncToGenerator.js:19 handleNodeClick @ index.vue:228 handleSizeChange @ index.vue:191 invokeWithErrorHandling @ vue.runtime.esm.js:3971 invoker @ vue.runtime.esm.js:1188 invokeWithErrorHandling @ vue.runtime.esm.js:3971 Vue.$emit @ vue.runtime.esm.js:2874 handleChange @ element-ui.common.js:982 invokeWithErrorHandling @ vue.runtime.esm.js:3971 invoker @ vue.runtime.esm.js:1188 invokeWithErrorHandling @ vue.runtime.esm.js:3971 Vue.$emit @ vue.runtime.esm.js:2874 handleOptionSelect @ select.js:1945 invokeWithErrorHandling @ vue.runtime.esm.js:3971 Vue.$emit @ vue.runtime.esm.js:2874 dispatch @ emitter.js:29 selectOptionClick @ option.js:383 click @ option.js:230 invokeWithErrorHandling @ vue.runtime.esm.js:3971 invoker @ vue.runtime.esm.js:1188 original_1._wrapper @ vue.runtime.esm.js:7265 index.vue:201
这是一个 JavaScript 的错误,具体的错误信息是:在 index.vue 文件的第 202 行,尝试读取一个未定义的属性 type 所导致的错误。该错误可能是由于变量未被正确初始化或赋值所引起的。建议检查相应的代码,确保变量在使用之前已被正确初始化或定义。另外,你可以尝试在代码中使用调试器来帮助你找到问题的原因。
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