web3j-spring-boot-starter：用于web3j的Spring Boot Starter

# web3j Spring Boot Starter [](https://travis-ci.org/web3j/web3j-spring-boot-starter) Integrate web3j into your Spring Boot applications via Spring's dependency injection. ## Getting started A sample application is available [here](https://github.com/web3j/examples/tree/master/spring-boot) To use, create a new [Spring Boot Application](https://spring.io/guides/gs/spring-boot/), and include the following dependencies: Maven: ```xml <dependency> <groupId>org.web3j</groupId> <artifactId>web3j-spring-boot-starter</artifactId> <version>4.0.3</version> </dependency> ``` Gradle: ```groovy compile ('org.web3j:web3j-spring-boot-starter:4.0.3') ``` Now Spring can inject web3j instances for you where ever you need them: ```java @Autowired private Web3j web3j; ``` No additional configuration is required if you want to connect via HTTP to the default URL http://localhost:8545. Otherwise simply add the address of the endpoint in your application properties: ```properties # An infura endpoint web3j.client-address = https://rinkeby.infura.io/ # Or, an IPC endpoing web3j.client-address = /path/to/file.ipc ``` ## Admin clients If you wish to make use of the personal module methods that are common to both [Parity](https://github.com/ethcore/parity/wiki/JSONRPC-personal-module) and [Geth](https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal) to manage accounts, enable the admin client: ```properties web3j.admin-client = true ``` Then Spring can inject admin clients: ```java @Autowired private Admin admin; ``` ## HTTP client configuration Some Ethereum operations take longer than the default HTTP timeout set by the `OkHttp3` library used by `web3j`. To configure those timeouts set the web3j `httpTimeoutSeconds` property: ```properties web3j.httpTimeoutSeconds = 600 ``` This sets all three OkHttp3 timeouts: `connect`, `read`, and `write`. Valid values are any non-negative integer. A value of '`0`' means: no timeout. **Note**: This is not required for transacting with web3j. ## Further information For further information on web3j, please refer to the [web3j home page](https://web3j.io).