Web3j
提供了 StaticStruct
和 DynamicStruct
等类,您可以通过基本类型定义结构对象。以下是我项目中的示例:
class Value: DynamicStruct {
private lateinit var offer: String
private lateinit var availableSince: BigInteger
private lateinit var availabilityEnd: BigInteger
private var isConsumed: Boolean = false
private lateinit var lockedUntil: BigInteger
constructor(
offer: String,
availableSince: BigInteger,
availabilityEnd: BigInteger,
isConsumed: Boolean,
lockedUntil: BigInteger
) : super(
Utf8String(offer), Uint256(availableSince),
Uint256(availabilityEnd), Bool(isConsumed),
Uint256(lockedUntil)
) {
this.offer = offer
this.availableSince = availableSince
this.availabilityEnd = availabilityEnd
this.isConsumed = isConsumed
this.lockedUntil = lockedUntil
}
constructor(
offer: Utf8String,
availableSince: Uint256,
availabilityEnd: Uint256,
isConsumed: Bool,
lockedUntil: Uint256
) : super(offer, availableSince, availabilityEnd, isConsumed, lockedUntil) {
this.offer = offer.value
this.availableSince = availableSince.value
this.availabilityEnd = availabilityEnd.value
this.isConsumed = isConsumed.value
this.lockedUntil = lockedUntil.value
}
}
理想情况下,您只需要将此结构实例作为参数传递给合同方法即可,其中合同是通过$web3j solidity generate -b /path/to/<smart-contract>.bin -a /path/to/<smart-contract>.abi -o /path/to/src/main/java -p com.your.organisation.name
命令自动生成的。
然而,就个人而言,我遇到了使此控制台命令工作的问题,必须自己实现所需的逻辑。这正在进行中。