Geth得到部署合同

Question

我是新的区块链，直到现在，我已经设法部署合同，并通过geth控制台和节点代码传输以太.我现在正试图弄清楚如何获得我已经部署的合同，并通过Geth和javascript与其交互.我会感谢你的帮助。

谢谢！:)

Answer 1

下面是您需要的主要步骤的示例。您需要ABI (从编译契约时开始)和部署到的地址。

https://github.com/ethereum/wiki/wiki/JavaScript-API#example-50

// contract abi
var abi = [{
     name: 'myConstantMethod',
     type: 'function',
     constant: true,
     inputs: [{ name: 'a', type: 'string' }],
     outputs: [{name: 'd', type: 'string' }]
}, {
     name: 'myStateChangingMethod',
     type: 'function',
     constant: false,
     inputs: [{ name: 'a', type: 'string' }, { name: 'b', type: 'int' }],
     outputs: []
}, {
     name: 'myEvent',
     type: 'event',
     inputs: [{name: 'a', type: 'int', indexed: true},{name: 'b', type: 'bool', indexed: false}]
}];

// creation of contract object
var MyContract = web3.eth.contract(abi);

// initiate contract for an address
var myContractInstance = MyContract.at('0xc4abd0339eb8d57087278718986382264244252f');

// call constant function
var result = myContractInstance.myConstantMethod('myParam');
console.log(result) // '0x25434534534'