返回结果要从List<Type> 里面去读，然后解析成Java常用的格式 ``` Function f = new Function(fn, input, output); String data = FunctionEncoder.encode(f); EthCall e = exec(web3j.ethCall(Transaction.createEthCallTransaction(from, to, data), DefaultBlockParameterName.LATEST)); List<Type> types = FunctionReturnDecoder.decode(e.getResult(), f.getOutputParameters()); ```