简单get请求

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curl www.baidu,com
curl "www.baidu,com?a=1&b=2"

post带表单

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curl -X POST -d 'a=1&b=2' www.baidu.com

post带json

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curl -H "Content-Type: application/json" -X POST -d '{"abc":123,"bcd":"nihao"}' www.baidu.com

查看响应头

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curl -i www.baidu,com