一直用Fiddle抓包，总觉得不够用，或许还没发掘出它的其他好用的功能，所以找到了Charles。
目录及更新说明
Charles 从入门到精通：http://blog.devtang.com/2015/11/14/charles-introduction/
破解：https://www.zzzmode.com/mytools/charles/
20190330更新：
https://android-developers.googleblog.com/2016/07/changes-to-trusted-certificate.html
https://blog.csdn.net/xuwb123xuwb/article/details/81666303（Android 7.0 之后抓包 Charles 手机配置证书后仍报： SSLHandshake: Received fatal alert: certificate_unknown）
https://developer.android.google.cn/training/articles/security-config
https://www.jianshu.com/p/e7a5443df37b（使用Charles抓取手机https请求）
https://www.jianshu.com/p/923eca294579
https://www.charlesproxy.com/documentation/using-charles/ssl-certificates/（官方解决方案）
https://blog.csdn.net/ShadowySpirits/article/details/79756274（Android 7.0 之后抓包 unknown 和证书无效的解决方案（无需改代码））
https://blog.csdn.net/mrxiagc/article/details/75329629（Charles Android 抓包失败SSLHandshake: Received fatal alert: certificate_unknown）
https://blog.csdn.net/jiang_mingyi/article/details/78845956（charles提示“SSL Proxying not enabled for this host: enable in Proxy Settings, SSL locations”）
https://www.baidu.com/s?ie=utf-8&f=8&rsv_bp=1&tn=02049043_69_pg&wd=Charles%20https&oq=%2526lt%253Bharles&rsv_pq=f346514200037e0b&rsv_t=d3a2xgjam90DtO5vfPseRxgjK%2B2FnIO7c4aGedT%2F%2FZZnVaFw7H%2BPqq9%2BmaIay81HlTiL4u4&rqlang=cn&rsv_enter=1&rsv_sug3=6&rsv_sug1=5&rsv_sug7=100&rsv_sug2=0&inputT=1216&rsv_sug4=1217（Charles https）
https://www.google.com/search?source=hp&ei=SA-fXPzzO5r8wQPhlLmYDA&q=Client+SSL+handshake+failed%3A+An+unknown+issue+occurred+processing+the+certificate+%28certificate_unkno&btnK=Google+%E6%90%9C%E7%B4%A2&oq=Client+SSL+handshake+failed%3A+An+unknown+issue+occurred+processing+the+certificate+%28certificate_unkno&gs_l=psy-ab.3..0i30.280.280..488...0.0..0.101.101.0j1......0....2j1..gws-wiz.....0.hHMsg7qXWSo（Client SSL handshake failed: An unknown issue occurred processing the certificate (certificate_unkno）
https://www.baidu.com/s?wd=%E5%B0%8F%E7%B1%B36%20%E4%BF%A1%E4%BB%BB%E7%9A%84%E5%87%AD%E8%AF%81&rsv_spt=1&rsv_iqid=0xe3a148e7000213f2&issp=1&f=8&rsv_bp=1&rsv_idx=2&ie=utf-8&tn=baiduhome_pg&rsv_enter=1&rsv_sug3=46&rsv_sug1=25&rsv_sug7=100&rsv_t=e08cFiicm06wFjtfy9vamYUY4p8jmx6bZ3zG8pG39UX208W9wnhh%2BSt9QGAjymGtnk0E（小米6 信任的凭证）
https://www.baidu.com/baidu?tn=02049043_69_pg&ie=utf-8&word=SSL+Proxying+not+enabled+for+this+host%3A+enable+in+Proxy+Settings%2C+SSL+locations（SSL Proxying not enabled for this host: enable in Proxy Settings, SSL locations）
https://cloud.tencent.com/developer/article/1144273（Charles Client SSL handshake failed certificate_unknown）
小米4可抓https请求，测试成功；小米6暂未成功，报Client SSL handshake failed: An unknown issue occurred processing the certificate (certificate_unknown)
AndroidManifest.xml和res/xml/network_security_config.xml是配在app源码内？那要抓别人的应用怎么呢？用apktool？
安卓版本的问题 >7.0需要设置一些东西