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# Spring Cloud Polaris Discovery example
## 样例简介
本样例将介绍如何在Spring Cloud项目中使用```spring-cloud-starter-tencent-polaris-discovery```以使用其各项功能。
该样例分为两个微服务，即 ```discovery-caller-service``` 和 ```discovery-callee-service ```。
其中 ```discovery-caller-service``` 调用 ```discovery-callee-service```
## 使用说明
### 修改配置
修改 resource/bootstrap.yml 中北极星的服务端地址
```yaml
spring :
cloud :
polaris :
address : grpc://${ip}:8091
```
### 启动样例
#### 启动Polaris后端服务
参考[Polaris Getting Started](https://github.com/PolarisMesh/polaris#getting-started)。
#### 启动应用
- IDEA启动
分别启动
1. ```spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service```下的```DiscoveryCallerService```
2. ```spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service```下的```DiscoveryCalleeService```
### 验证
#### 调用 discovery-caller-service 暴露的接口
执行以下命令发起Feign调用，
```shell
'http://localhost:48080/discovery/service/caller/feign?value1=1&value2=2'
```
预期返回值
```
```
#### RestTemplate调用
执行以下命令发起RestTemplate调用，
```shell
'http://localhost:48080/discovery/service/caller/rest'
```
预期返回值
```
```
