【解决Request header field Content-Type is not allowed by Access-Control-Allow-Headers in preflight 跨域问题】教程文章相关的互联网学习教程文章

No 'Access-Control-Allow-Origin' header is present on the requested resource.【代码】

网站地址是 http://54.169.69.60/qnow/ 而 AJAX URL 是 http://54.169.69.60:8081/process_message,两个端口不一致,因此要跨域。 Access-Control-Allow-Origin是HTML5中定义的一种服务器端返回Response header,用来解决资源(比如字体)的跨域权限问题。 它定义了该资源允许被哪个域引用,或者被所有域引用(google字体使用*表示字体资源允许被所有域引用)。 解决方法: 根据错误信息可知,必须给 header 加上头部 Access-...

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:9001/api/size/get. (Reason: CORS header 'Access-Control-Allow-Origin' missing).

static void EnableCrossSiteRequests(HttpConfiguration config){var cors = new EnableCorsAttribute(origins: "*",headers: "*",methods: "*");config.EnableCors(cors);}Source Code 在路由中启用CROSS,说对整个API项目有效... Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:9001/api/size/get. (Reason: CORS header Access-Control-Allow-Origin mi...

No 'Access-Control-Allow-Origin' header is present on the requested resource.

*********************************************************************** No ‘Access-Control-Allow-Origin‘ header is present on the requested resource. * 说明:* 之前没考虑到Ajax跨域访问会遇到这个问题,今天梦真在测试的时候看到* 这个现象,于是查找资料看一下怎么解决。** 2016-10-12 深圳 南山平山村 曾剑锋**********************************************************...

No 'Access-Control-Allow-Origin' header is present on the requested resource.

Response to preflight request doesn‘t pass access control check: No ‘Access-Control-Allow-Origin‘ header is present on the requested resource. Origin ‘http://localhost:8088‘ is therefore not allowed access. 初学webservice,想在Javaweb项目里调用网上的天气预报服务,结果浏览器控制台出现了以上错误 错误原因很明了,意思是跨域请求不被允许,‘http://localhost:8088‘ 是当前的可用域;故而 var xmlHttp=n...

解决github push错误The requested URL returned error: 403 Forbidden while accessing【代码】

git push -u origin master error: The requested URL returned error: 403 Forbidden while accessing https://github.com/huangzhazha/studygit.git/info/refs fatal: HTTP request failedgit version 1.7.1OS:CENTOS解决方案:vim .Git/config修改[remote "origin"] url = https://github.com/huangzhazha/studygit.git为:[remote "origin"] url = https://huangzhazha@github.com/huangzhazha/studygit.git再次...

解决git clone时报错:The requested URL returned error: 401 Unauthorized while accessing

版本号问题,最直接的解决的方法就是又一次编辑安装git吧: 1. 下载:# wget -O git.zip https://github.com/git/git/archive/master.zip 2. 解压:# unzip git.zip 3. 进入git文件夹:# cd git-master 4. 编译安装: # autoconf# ./configure --prefix=/usr/local # make && make install 5. 最后别忘了删掉旧的git。并把新版本号的git建立软链接到/usr/bin/git # rm /usr/bin/git # ln -s /usr/local/bin/git /usr/bin/git 解决g...

No 'Access-Control-Allow-Origin' header is present on the requested resource

一、现象 ajax调用请求后,前端提示收到这个错误 No ‘Access-Control-Allow-Origin‘ header is present on the requested resource 二、原因 这是一个典型的跨域请求失败的例子。 三、解决 服务器的响应消息中增加头字段即可。 rsp.addHeader("Access-Control-Allow-Origin", "*"); 四、扩展 更多的关于CORS的内容可以学习这篇文章: https://yq.aliyun.com/articles/69313No Access-Control-Allow-Origin header is present on ...

mac上的xampp出现Access forbidden! You don’t have permission to access the requested object. It is either【代码】

一个Joomla!程序,之前是在win上的xampp上运行得非常好的,当我把它拿到mac下面的xampp上去运行的时候,发现有问题,没法运行,报以下的错误: Access forbidden! You don’t have permission to access the requested object. It is either read-protected or not readable by the server. 这时可以找到apache的httpd.conf文件,找出<Directory /> 修改成如下: <Directory />Options AllAllowOverride AllOrder deny,allowAllow...

跨域问题,Request header field XXXXX is not allowed by Access-Control-Allow-Headers 的问题

跨域问题,Request header field XXXXX is not allowed by Access-Control-Allow-Headers 的问题标签:color ati 浏览器 允许 access ted with method val 本文系统来源:http://www.cnblogs.com/wangshuming/p/7903800.html

ABP PUT、DELETE请求错误405.0 - Method Not Allowed 因为使用了无效方法(HTTP 谓词) 引发客户端错误 No &#39;Access-Control-Allow-Origin&#39; header is present on the requested resource【图】

一、问题描述 ABP angular前端部署后,查询,新增都没问题,但更新和删除会报一个跨域问题的错误,详细信息如下: PUT http://localhost:8060/api/services/app/User/Update 405 (Method Not Allowed) users:1 Failed to load http://localhost:8060/api/services/app/User/Update: No ‘Access-Control-Allow-Origin‘ header is present on the requested resource. Origin ‘http://localhost:4200‘ is therefore not allowed ...

Access to XMLHttpRequest at &#39;XXX&#39; from origin &#39;XX&#39; has been blocked by CORS policy: No &#39;Access-Control-Allow-Origin&#39; header is present o AJAX跨域请求解决方法【图】

true, 最终: Access to XMLHttpRequest at XXX from origin XX has been blocked by CORS policy: No Access-Control-Allow-Origin header is present o AJAX跨域请求解决方法标签:问题 ajax 今天 img jsonp -o ade 插入 解决方法 本文系统来源:https://www.cnblogs.com/zzguan/p/10117174.html

denied: requested access to the resource is denied【图】

192.168.9.xx/docker/IMAGE[:TAG] 此句我解释下啊, 第一个 SOURCE_IMAGE[:TAG] 就是 REPOSITORY:TAG ; 文件名, 第二个 IMAGE[:TAG] SOURCE_IMAGE[:TAG] 就是 xianwei/vimifconfig:latest ; IMAGE[:TAG] 就是IMAGE 是自己建一个名字 ,想怎么写就怎么写,;[:TAG] 就 是 latest, 如:cnetos:latest 再上传,push docker push 192.168.9.xx/docker/IMAGE[:TAG] [root@PROD-MQ ~]# docker logout 192.168.x.xx // 退...

denied: requested access to the resource is denied【图】

解决方法:1 docker login登录自己的hub2 注意 docker tag的时候 命名有明确的要求,比如用户名为123456,那么镜像为123456/Xdenied: requested access to the resource is denied标签:方法 info mamicode 镜像 login res dock source ted 本文系统来源:https://www.cnblogs.com/lanjianhappy/p/11846936.html

Request Method: OPTIONS Access to XMLHttpRequest blocked by CORS policy:【代码】【图】

.antMatchers("/index.html", "/static/**","/static/index.html", "/login_p", "/favicon.ico").permitAll()//"/login"不进行权限验证.anyRequest().authenticated() //其他的需要登陆后才能访问.and().formLogin()//loginProcessingUrl用于指定前后端分离的时候调用后台登录接口的名称.loginProcessingUrl("/user/login").usernameParameter("username").passwordParameter("password").successHandler(new AuthenticationSucc...

ElementUI项目请求SpringBoot后台项目时提示:Access to XMLHttpRequest at **from origin ** has been blocked by CORS policy【代码】【图】

‘axios‘ 然后打开webpack.config.js进行url的代理配置 devServer: {host: ‘127.0.0.1‘,port: 8010,proxy: {‘/api/‘: {target: ‘http://127.0.0.1:8088‘,changeOrigin: true,pathRewrite: {‘^/api‘: ‘‘}}}, 以上配置代表项目的启动端口为8010,ElementUI在向后台请求Url时,就会将/api/的请求想target中执行的地址去请求 所以我们可以在页面App.vue中这样去调用后台数据接口//页面初始化的时候,去调用crea...