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node返回数据出错 Cannot set headers after they are sent to the client
时间 2021-01-16
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nodejs
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“Cannot set headers after they are sent to the client.”==>“发送到客户端后无法设置标头” 在处理HTTP请求时,服务器会输出响应头,再输出主体内容,如果你在代码中设置了res.writeHead()函数,然后再使用res.send()方法,就会出现这个错误 这时候只需要将res.send()函数更换为res.end()函数代为执行即可 注意
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