public String setPeerCost(Account account,String peerPubkey,int peerCost,Account payerAcct,long gaslimit,long gasprice) throws Exception {
if(account== null || peerPubkey == null || peerPubkey.equals("") ||payerAcct == null){
throw new SDKException(ErrorCode.ParamErr("parameters should not be null"));
}
if(gaslimit < 0 || gasprice < 0){
throw new SDKException(ErrorCode.ParamErr("gaslimit and gasprice should not be less than 0"));
}
if(peerCost <0 || peerCost > 100){
throw new SDKException(ErrorCode.ParamErr("peerCost is wrong, it should be 0 <= peerCost <= 100"));
}
List list = new ArrayList();
list.add(new Struct().add(peerPubkey,account.getAddressU160(),peerCost));
byte[] args = NativeBuildParams.createCodeParamsScript(list);
Transaction tx = sdk.vm().buildNativeParams(new Address(Helper.hexToBytes(contractAddress)),"setPeerCost",args,payerAcct.getAddressU160().toBase58(),gaslimit, gasprice);
sdk.signTx(tx,new Account[][]{{account}});
if(!account.equals(payerAcct)){
sdk.addSign(tx,payerAcct);
}
boolean b = sdk.getConnect().sendRawTransaction(tx.toHexString());
if (b) {
return tx.hash().toString();
}
return null;
}参数说明：
account: 节点的质押钱包账户
peerPubkey: 节点的节点公钥
peerCost: 数字0-100，表示节点自己所占收益的百分比，其余部分将分给质押用户。
payerAcct: 手续费代付账户，将支付手续费，可以与account相同。
gaslimit: 默认20000
gasprice: 默认500, 2020年7月7日之后请传入2500
构造交易部分：
Transaction tx = sdk.vm().buildNativeParams(new Address(Helper.hexToBytes(contractAddress)),"setPeerCost",args,payerAcct.getAddressU160().toBase58(),gaslimit, gasprice);签名部分：
sdk.signTx(tx,new Account[][]{{account}});交易的序列化和反序列话参考：
查询是否设置成功参考：