Error:exceeds block gas limit undefined？

大佬们求救！我用的infura申请的以太坊ropstan测试网接口，部署合约使用java的web3j，遇到报错Error: exceeds block gas limit，求大神们支招！欢迎联系qq:1206814310 急！万分感谢！

将创世区块的配置文件genesis.json中的参数gasLimit设置为0xffffffff（十进制值为4294967295）。重新初始化，生成区块，查看区块信息。

> eth.blockNumber
20
> eth.getBlock(20)
{
  difficulty: 132288,
  extraData: "0xd783010801846765746886676f312e31308664617277696e",
  gasLimit: 4211854946,
  gasUsed: 0,
  hash: "0x98a230aa2d7aaee1b92732488aff3571d9569b44ee2c52bd2a47cc115649ba1d",
  logsBloom: "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
  miner: "0xb6cd75af6594f46374378cf3a7d9cbfc06485994",
  mixHash: "0xef93a1be29bbabcf7e6a9d2031b2b76b224547c77aa4f5a6d5edaa1ed538e428",
  nonce: "0x756c86cc86699021",
  number: 20,
  parentHash: "0x62dacb00b038677688e70da047f5074038caa8ac16d161118a06b8a053789bda",
  receiptsRoot: "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
  sha3Uncles: "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
  size: 536,
  stateRoot: "0xc74d4094304b408ac107955a721c1a45393687672cf1ab40761c1bf37cc5efff",
  timestamp: 1519531846,
  totalDifficulty: 2764672,
  transactions: [],
  transactionsRoot: "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
  uncles: []
}