通过CORS请求反代资源解决跨域问题

Kevin 杂记 1,071 次浏览 38条评论

在弄反向代理时发现corsproxy这个好东西，可以较为简单解决跨域问题。记录下其用法，以防以后用到。corsproxy是基于Node.js的开源CORS代理工具，使用前需要先安装Nodejs和npm，具体步骤如下（以CentOS为例）。

1. 添加EPEL软件源，然后安装Nodejs（npm会一并安装）。

yum install epel-release
yum install -y nodejs

2. 获取安装corsproxy软件。

npm install -g corsproxy

3. 运行corsproxy命令激活服务即可开始使用，默认通过http://localhost:1337反代资源。

假设要反代http://example.com/test.png这个图片，则使用http://localhost:1337/example.com/test.png访问。

外网访问不能用localhost，这时可以更改域名和端口，命令如下。

# 更改域名
CORSPROXY_HOST=0.0.0.0 corsproxy

# 更改端口
CORSPROXY_PORT=8080 corsproxy

还有两个额外选项。

# 使用调试模式
DEBUG=1 corsproxy

# 设置有效负载最大字节（默认为1MB，这里示例设置为10MB）
CORSPROXY_MAX_PAYLOAD=10485760 corsproxy

使用时建议开个Screen，不然断开SSH就退出进程了。

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