Deploy, Issue and Transfer Tokens

【Deploy, Issue and Transfer Tokens】

　　本例使用 eosio.token 合约来尝试发行Token.

1、签出 eosio.contracts。

git clone https://github.com/EOSIO/eosio.contracts --branch v1.4.0 --single-branch

　　这里头有很多eosio写的标准合约。

　　

　　我们将使用上图中的 eosio.token 合约来练习发布 token。

2、eosio.token非常的简单，仅包含 eosio.token.hpp、eosio.token.cpp两件文件。其中提供了6个action：

　　

3、建立一个 eosio.token account，此账户用于发布eosio.token合约。

cleos create account eosio eosio.token xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

4、在 eosio.token 目录下编译合约

eosio-cpp -I include -o eosio.token.wasm src/eosio.token.cpp --abigen

5、用 eosio.token 账号发布合约

cleos set contract eosio.token /home/ubuntu/contracts/eosio.contracts/eosio.token --abi eosio.token.abi -p eosio.token@active

6、一个合约可以创建多个token。使用 create 方法创建一种token。

cleos push action eosio.token create '[ "eosio", "1000000000.0000 SYS"]' -p eosio.token@active

　　因为此处是创建token，所以需要 eosio.token 账户的权限。

　　it's a symbol_name type composed of two pieces of data, a maximum supply float and a symbol_name in capitalized alpha characters only, for example "1.0000 SYM".

　　The issuer will be the one with authority to call issue and or perform other actions such as freezing, recalling, and whitelisting of owners.

　　This command created a new token SYS with a precision of 4 decimals and a maximum supply of 1000000000.0000 SYS. To create this token requires the permission of the eosio.token contract. For this reason, -p eosio.token@active was passed to authorize the request.

7、发行token。

　　The issuer can issue new tokens to the "alice" account created earlier.

　　发行者（issuer）可以给其它用户发行token。

cleos push action eosio.token issue '[ "alice", "100.0000 SYS", "memo" ]' -p eosio@active

　　注意，因为此处是发行token，所以需要发行者（issuer）的权限。

　　

　　To inspect the transaction, try using the -d -j options, they indicate "don't broadcast" and "return transaction as json," which you may find useful during development.

cleos push action eosio.token issue '["alice", "100.0000 SYS", "memo"]' -p eosio@active -d -j

8、转移 token。

cleos push action eosio.token transfer '[ "alice", "bob", "25.0000 SYS", "m" ]' -p alice@active

　　Now check if "bob" got the tokens using cleos get currency balance

cleos get currency balance eosio.token bob SYS
25.00 SYS

　　Check "alice's" balance, notice that tokens were deducted from the account

cleos get currency balance eosio.token alice SYS
75.00 SYS

参考：

1、https://developers.eos.io/eosio-home/docs/token-contract#section-step-3-compile-the-contract