func main() {
   client, err := ethclient.Dial("https://rinkeby-light.eth.linkpool.io/")
   if err != nil {
      log.Fatal(err)
   }
   //获取当前的最新区块
   header, err := client.HeaderByNumber(context.Background(), nil)
   if err != nil {
      log.Fatal(err)
   }
   fmt.Println("最新区块", header.Number.String()) // 5671744

   //开始查询日志，可以添加过滤条件，查询符合你想要的日志
   query := ethereum.FilterQuery{
      FromBlock: big.NewInt(
         10570948),
      ToBlock: header.Number,
      Addresses: []common.Address{
         common.HexToAddress("0x40490DF1cc631817D24BA324147c59821C8970BF"),
         common.HexToAddress("0xE3a463d743F762D538031BAD3f1E748BB41f96ec"),
      },
   }
   logs, err := client.FilterLogs(context.Background(), query)
   if err != nil {
      log.Fatal(err)
   }

   //解析日志结果
   for _, vLog := range logs {
      fmt.Println("Data:", vLog.Data)                 // 0x3404b8c050aa0aacd0223e91b5c32fee6400f357764771d0684fa7b3f448f1a8
      fmt.Println("contactAddress:", vLog.Address)    // 0x3404b8c050aa0aacd0223e91b5c32fee6400f357764771d0684fa7b3f448f1a8
      fmt.Println("BlockHash:", vLog.BlockHash.Hex()) // 0x3404b8c050aa0aacd0223e91b5c32fee6400f357764771d0684fa7b3f448f1a8
      fmt.Println("BlockNumber:", vLog.BlockNumber)   // 2394201
      fmt.Println("TxHash:", vLog.TxHash.Hex())       // 0x280201eda63c9ff6f305fcee51d5eb86167fab40ca3108ec784e8652a0e2b1a6

      //具体的内容
      var topics [4]string
      for i := range vLog.Topics {
         //i=0,日志名称的十六进制
         //后续的元素是日志内容
         fmt.Println("Topics:", i, vLog.Topics[i])
         topics[i] = vLog.Topics[i].Hex()
      }
   }
   //将方法转成16进制,可用于多种日志判断具体执行什么业务逻辑
   eventSignature := []byte("Transfer(address,address,uint256)")
   hash := crypto.Keccak256Hash(eventSignature)
   fmt.Println("eventSignature:", hash.Hex())
}

func main() {
   client, err := ethclient.Dial("https://rinkeby-light.eth.linkpool.io/")
   if err != nil {
      log.Fatal(err)
   }
   //获取当前的最新区块
   header, err := client.HeaderByNumber(context.Background(), nil)
   if err != nil {
      log.Fatal(err)
   }
   fmt.Println("最新区块", header.Number.String()) // 5671744

   //开始查询日志，可以添加过滤条件，查询符合你想要的日志
   query := ethereum.FilterQuery{
      FromBlock: big.NewInt(
         10570948),
      ToBlock: header.Number,
      Addresses: []common.Address{
         common.HexToAddress("0x40490DF1cc631817D24BA324147c59821C8970BF"),
         common.HexToAddress("0xE3a463d743F762D538031BAD3f1E748BB41f96ec"),
      },
   }
   logs, err := client.FilterLogs(context.Background(), query)
   if err != nil {
      log.Fatal(err)
   }

   //解析日志结果
   for _, vLog := range logs {
      fmt.Println("Data:", vLog.Data)                 // 0x3404b8c050aa0aacd0223e91b5c32fee6400f357764771d0684fa7b3f448f1a8
      fmt.Println("contactAddress:", vLog.Address)    // 0x3404b8c050aa0aacd0223e91b5c32fee6400f357764771d0684fa7b3f448f1a8
      fmt.Println("BlockHash:", vLog.BlockHash.Hex()) // 0x3404b8c050aa0aacd0223e91b5c32fee6400f357764771d0684fa7b3f448f1a8
      fmt.Println("BlockNumber:", vLog.BlockNumber)   // 2394201
      fmt.Println("TxHash:", vLog.TxHash.Hex())       // 0x280201eda63c9ff6f305fcee51d5eb86167fab40ca3108ec784e8652a0e2b1a6

      //具体的内容
      var topics [4]string
      for i := range vLog.Topics {
         //i=0,日志名称的十六进制
         //后续的元素是日志内容
         fmt.Println("Topics:", i, vLog.Topics[i])
         topics[i] = vLog.Topics[i].Hex()
      }
   }
   //将方法转成16进制,可用于多种日志判断具体执行什么业务逻辑
   eventSignature := []byte("Transfer(address,address,uint256)")
   hash := crypto.Keccak256Hash(eventSignature)
   fmt.Println("eventSignature:", hash.Hex())
}