按着这个教程撘私有链
$ k4 y, z) G; x4 c3 Z结果第一步就报错啦
" m$ N; y9 e  j, P4 q3 \这是: D7 G( h. }3 D- y( ^0 h3 u
genesis.json:  Y7 f% l6 t1 y% }( F! k( o
2 u+ g7 H% f7 q

1. {2 N! t. ~; @1 x' }' {5 i, C! t
   
2.   "coinbase"   : "0x0000000000000000000000000000000000000000",3 r3 p( }# B" [; s
   
3.   "difficulty" : "0x400",+ Q$ O7 c& v  ^$ T! i8 \" F
   
4.   "extraData"  : "0x0",, F1 n$ E; \" P
   
5.   "gasLimit"   : "0x2fefd8",2 ]) r# R0 k7 t0 T: w; m5 n. v
   
6.   "nonce"      : "0xdeadbeefdeadbeef",
   + o5 [3 M7 V$ p" n3 _, p$ i1 n
7.   "mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",5 K3 E5 E! [. n# @0 B2 h
   
8.   "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
   " x; X1 L- f3 r' f0 a3 l
9.   "timestamp"  : "0x00",5 Y# R4 R) M9 Z8 [) v6 \
   
10.   "alloc"      : {}% x7 J6 ^. l2 v  `3 t
    
11. }

复制代码

5 m: F( F! |& ~, L" n
) ~% F: r5 c% R9 {% C2 x1 _$ [- I
然而启动的时候：2 \) L6 I: D* {+ ]
wangyideMacBook-Pro:eth vincent$  geth --datadir data0 init genesis.json; N! v% s' b. l* i
Fatal: invalid genesis file: json: cannot unmarshal hex string of odd length into Go struct field Genesis.extraData of type hexutil.Bytes
+ g( P& d, Z& R. D4 E8 uwangyideMacBook-Pro:eth vincent$
) B) G1 N$ @& C哪位大神能帮帮我？