按着这个教程撘私有链
4 [# r% f' X* ]0 J结果第一步就报错啦$ w: q" L. W5 O& a# W, `( Y
这是
; @- N: J! N1 c8 h$ c. Ngenesis.json:
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1. {
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2.   "coinbase"   : "0x0000000000000000000000000000000000000000",
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3.   "difficulty" : "0x400",
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4.   "extraData"  : "0x0",
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5.   "gasLimit"   : "0x2fefd8",3 n/ n8 Q9 G- f' ?
   
6.   "nonce"      : "0xdeadbeefdeadbeef",
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7.   "mixhash"    : "0x0000000000000000000000000000000000000000000000000000000000000000",
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8.   "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
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9.   "timestamp"  : "0x00",9 g7 ]8 G  v, C* j* W, A) Q$ Z; @
   
10.   "alloc"      : {}5 L* c, H5 x+ D3 B8 s0 J* u( U
    
11. }

复制代码

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然而启动的时候：
) W) y. K  t. {) O3 h8 ^* CwangyideMacBook-Pro:eth vincent$  geth --datadir data0 init genesis.json
0 i# |: a! M: m' h3 h" m3 g9 wFatal: invalid genesis file: json: cannot unmarshal hex string of odd length into Go struct field Genesis.extraData of type hexutil.Bytes8 {, N. w. o! ^
wangyideMacBook-Pro:eth vincent$
9 U2 N# m6 X& w. S3 N$ n( B  r5 @哪位大神能帮帮我？