如果你还没尝试 用Fiddler抓包，我建议你直接看下面的用charles工具来抓包，Fiddler真的挫还要安装配置一大堆结果还不尽人意
如果你搞到一半有问题，不死心一定想用它抓个包的可以看看??。
1.Fiddler
（1）安装Mono
下载地址：http://www.mono-project.com/download/#download-mac
留意下下载的版本，我下载的是5.10.1
下载后点击安装，安装成功之后在Terminal执行命令（这里的5.10.1就是下载的版本号，记得根据自己的版本号来修改）：
/Library/Frameworks/Mono.framework/Versions/5.10.1/bin/mozroots --import --sync
(2)配置环境变量，编辑.bash_profile文件：
在终端输入：sudo vi ~/.bash_profile，按i进入编辑状态，添加以下内容(这里5.10.1也是你下载的版本号)
export MONO_HOME=/Library/Frameworks/Mono.framework/Versions/5.10.1
export PATH=$PATH:$MONO_HOME/bin
按esc，然后:wq，保存成功了退出
（3）下载Fiddler
下载地址：https://www.telerik.com/download/fiddler 下载成功之后解压
运行Fiddler:
打开Terminal，进入到解压Fiddler路径里，执行命令运行：
sudo mono Fiddler.exe
如果启动失败并报错如下：
WARNING: The Carbon driver has not been ported to 64bits, and very few parts of Windows.Forms will work properly, or at all
Stacktrace:
at <unknown> <0xffffffff>
at (wrapper managed-to-native) System.Windows.Forms.XplatUICarbon.CGDisplayBounds (intptr) [0x00002] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.XplatUICarbon.get_WorkingArea () [0x00005] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.XplatUICarbon.get_VirtualScreen () [0x00000] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.XplatUI.get_VirtualScreen () [0x00000] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Screen..cctor () [0x00034] in <36fbc38531724d82b10aef6ebafea6e9>:0
at (wrapper runtime-invoke) object.runtime_invoke_void (object,intptr,intptr,intptr) [0x0001e] in <4fdc5ed61a074cafb49fa42deb20d521>:0
at <unknown> <0xffffffff>
at System.Windows.Forms.Form.get_CreateParams () [0x00157] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Control.CreateHandle () [0x0002a] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Form.CreateHandle () [0x00000] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Control.CreateControl () [0x00039] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Control.SetVisibleCore (bool) [0x0003a] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Form.SetVisibleCore (bool) [0x00065] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Control.set_Visible (bool) [0x00009] in <36fbc38531724d82b10aef6ebafea6e9>:0
at System.Windows.Forms.Control.Show () [0x00000] in <36fbc38531724d82b10aef6ebafea6e9>:0
at (wrapper remoting-invoke-with-check) System.Windows.Forms.Control.Show () [0x00031] in <36fbc38531724d82b10aef6ebafea6e9>:0
at Fiddler.frmViewer. (string[]) [0x00081] in <09623c708fdb40a483cea147bbea7a7f>:0
at Fiddler.frmViewer. (string[]) [0x00016] in <09623c708fdb40a483cea147bbea7a7f>:0
at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) [0x0004e] in <09623c708fdb40a483cea147bbea7a7f>:0
Native stacktrace:
0 mono 0x000000010a02c3d1 mono_handle_native_crash + 257
1 mono 0x000000010a093e86 altstack_handle_and_restore + 70
2 SkyLight 0x00007fffaabd4fc2 SLDisplayBounds + 50
3 ??? 0x00000001117e038e 0x0 + 4588438414
4 ??? 0x000000010a62d486 0x0 + 4469216390
5 mono 0x0000000109f865f4 mono_jit_runtime_invoke + 1316
6 mono 0x000000010a17e238 do_runtime_invoke + 88
7 mono 0x000000010a17a2a4 mono_runtime_class_init_full + 996
8 mono 0x0000000109f7fa45 mono_jit_compile_method_inner + 2485
9 mono 0x0000000109f82903 mono_jit_compile_method_with_opt + 1379
10 mono 0x000000010a02e871 common_call_trampoline + 1217
11 mono 0x000000010a02e379 mono_magic_trampoline + 73
12 ??? 0x000000010a41839e 0x0 + 4467032990
13 ??? 0x000000011148b81b 0x0 + 4584945691
14 ??? 0x000000010d8a384f 0x0 + 4522129487
15 ??? 0x000000010d8a34c7 0x0 + 4522128583
16 ??? 0x000000010a62d043 0x0 + 4469215299
17 mono 0x0000000109f865f4 mono_jit_runtime_invoke + 1316
18 mono 0x000000010a17e238 do_runtime_invoke + 88
19 mono 0x000000010a181849 do_exec_main_checked + 137
20 mono 0x0000000109fef32f mono_jit_exec + 287
21 mono 0x0000000109ff1b63 mono_main + 9235
22 mono 0x0000000109f763ad main + 253
23 mono 0x0000000109f762a4 start + 52
Debug info from gdb:
(lldb) command source -s 0 '/tmp/mono-gdb-commands.Cli6iM'
Executing commands in '/tmp/mono-gdb-commands.Cli6iM'.
(lldb) process attach --pid 1326
warning: (x86_64) /Library/Frameworks/Mono.framework/Versions/5.4.1/lib/mono/4.5/mscorlib.dll.dylib empty dSYM file detected, dSYM was created with an executable with no debug info.
warning: (x86_64)
.
.
.
.
.
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
Process 1326 detached
(lldb) quit
[1] 1326 abort mono Fiddler.exe解決方案：切换32bit-mono启动fiddler
mono --arch=32 Fiddler.exe启动之后
用fiddler对android的抓包具体配置可以看下这个博客
fiddler启动后电脑无法正常上网看下这个博客
我启动之后，想抓个包，这个fiddler好卡，各种不好，也没抓到包，于是我考虑想换成charles
2.charles
（1）安装charles
下载地址：http://www.charlesproxy.com/
（2）charles与手机链接
首先在Terminal输入命令 ifconfig | grep "inet " | grep -v 127.0.0.1获取 ip
接着，手机打开WLAN ,长按你链接的网络——>修改密码 -——>显示高级选项
代理修改为手动，服务器主机名修改为你获取的ip ，服务器端口改为8888，charles默认是8888
配置完成，charles会提示以下，点击allow
然后就可以抓包了。
（3）安装证书
抓包之后，你发现是乱码如下：
大概搜了下说需要安装SSL证书
v3.10以前的Charles版本需要自己下载CA证书，下载地址：
https://www.charlesproxy.com/documentation/additional/legacy-ssl-proxying/
如果版本高于等于v3.10
点击help--->SSL Proxying--->Inatall Charles Root Ceritificate
可以看到这个证书不首信任
双击选中证书弹出证书设置框
选择始终信任。保存退出。
还是乱码。。。
接下来选择Proxy--->SSL Proxying Settings
点击Add
输入内容
保存之后退出就可以了，如下
