Android之PC浏览器上传表单格式大文件到手机客户端read函数阻塞问题

1 、问题

PC浏览器上传表单格式大文件到手机服务器端，然后read文件真实数据时候出现阻塞。

比如

    User-Agent: PostmanRuntime/7.26.1
    Accept: */*
    Cache-Control: no-cache
    Postman-Token: c7e5e240-4398-4ac6-ba7f-98e99b5b4a01
    Host: 10.15.42.180:9999
    Accept-Encoding: gzip, deflate, br
    Connection: keep-alive
    Content-Type: multipart/form-data; boundary=--------------------------118331203760563697512606
    Content-Length: 221
    
    ----------------------------118331203760563697512606   52 * 2 = 104       52 + 2 = 54
    Content-Disposition: form-data; name="chengyuimage"; filename="1.txt"     69  + 2  = 71
    Content-Type: text/plain                                                  24 + 2 = 26 
                                                             2 * 2 = 4			0 + 2 = 2
    0123456789																  10 + 2 = 12 
    ----------------------------118331203760563697512606--  54 * 2 = 108      54 + 2 = 56 

读取下面的数据时候，大文件会阻塞

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