✨ 数据中心-数据隔离-名称空间
This commit is contained in:
parent
a76dd2227e
commit
6ee93a581c
|
|
@ -1,4 +1,241 @@
|
||||||
# 微服务文档
|
# 微服务
|
||||||
|
|
||||||
|
## 环境搭建
|
||||||
|
|
||||||
|
### Docker镜像源设置
|
||||||
|
|
||||||
|
```bash
|
||||||
|
# 创建目录
|
||||||
|
sudo mkdir -p /etc/docker
|
||||||
|
# 写入配置文件
|
||||||
|
sudo tee /etc/docker/daemon.json <<-'EOF'
|
||||||
|
{
|
||||||
|
"registry-mirrors": [
|
||||||
|
"https://docker-0.unsee.tech",
|
||||||
|
"https://docker-cf.registry.cyou",
|
||||||
|
"https://docker.1panel.live"
|
||||||
|
]
|
||||||
|
}
|
||||||
|
EOF
|
||||||
|
|
||||||
|
# 重启docker服务
|
||||||
|
sudo systemctl daemon-reload && sudo systemctl restart docker
|
||||||
|
```
|
||||||
|
|
||||||
|
使用docker-compose有的时候会因为版本不同，但是配置文件主要内容就是这些。需要注意版本问题
|
||||||
|
|
||||||
|
### 配置相关
|
||||||
|
|
||||||
|
#### MySQL配置问题
|
||||||
|
|
||||||
|
| **特性** | `**my.cnf**` | `**conf.d**` **目录** |
|
||||||
|
|----------|:--------------------|:-------------------:|
|
||||||
|
| **文件类型** | 单个文件 | 目录，包含多个 `.cnf` 文件 |
|
||||||
|
| **配置方式** | 集中式配置 | 分布式配置 |
|
||||||
|
| **优先级** | 高（覆盖 `conf.d` 中的配置） | 低（被 `my.cnf` 覆盖） |
|
||||||
|
| **适用场景** | 全局配置，核心配置 | 模块化配置，便于扩展和维护 |
|
||||||
|
|
||||||
|
#### MongoDB配置
|
||||||
|
|
||||||
|
```bash
|
||||||
|
sudo mkdir -p ~/docker/docker_data/mongo/conf
|
||||||
|
sudo mkdir -p ~/docker/docker_data/mongo/logs
|
||||||
|
sudo chmod 777 ~/docker/docker_data/mongo/logs
|
||||||
|
sudo chmod 777 ~/docker/docker_data/mongo/conf
|
||||||
|
|
||||||
|
cd ~/docker/docker_data/mongo/logs
|
||||||
|
sudo touch mongod.log
|
||||||
|
sudo chmod 777 mongod.log
|
||||||
|
|
||||||
|
cd ~/docker/docker_data/mongo/conf
|
||||||
|
sudo vim mongod.conf
|
||||||
|
|
||||||
|
cd ~
|
||||||
|
```
|
||||||
|
|
||||||
|
##### 配置文件
|
||||||
|
|
||||||
|
```bash
|
||||||
|
# 数据库文件存储位置
|
||||||
|
dbpath = /data/db
|
||||||
|
# log文件存储位置
|
||||||
|
logpath = /data/log/mongod.log
|
||||||
|
# 使用追加的方式写日志
|
||||||
|
logappend = true
|
||||||
|
# 是否以守护进程方式运行
|
||||||
|
# fork = true
|
||||||
|
# 全部ip可以访问
|
||||||
|
bind_ip = 0.0.0.0
|
||||||
|
# 端口号
|
||||||
|
port = 27017
|
||||||
|
# 是否启用认证
|
||||||
|
auth = true
|
||||||
|
# 设置oplog的大小(MB)
|
||||||
|
oplogSize=2048
|
||||||
|
```
|
||||||
|
|
||||||
|
##### 设置账户密码
|
||||||
|
|
||||||
|
```shell
|
||||||
|
#进入容器
|
||||||
|
docker exec -it mongodb /bin/bash
|
||||||
|
|
||||||
|
#进入mongodb shell
|
||||||
|
mongosh --port 27017
|
||||||
|
|
||||||
|
#切换到admin库
|
||||||
|
use admin
|
||||||
|
|
||||||
|
#创建账号/密码
|
||||||
|
db.createUser({ user: 'admin', pwd: '02120212', roles: [ { role: "root", db: "admin" } ] });
|
||||||
|
# db.createUser({ user: 'admin', pwd: '123456', roles: [ { role: "userAdminAnyDatabase", db: "admin" } ] });
|
||||||
|
```
|
||||||
|
|
||||||
|
### docker-compose.yml
|
||||||
|
|
||||||
|
如果休要所有的微服务环境，可以直接复制下面的内容，看清楚目录是否和自己需要的一样。
|
||||||
|
|
||||||
|
| 功能 | 旧版 (docker-compose) | 新版 (docker compose) |
|
||||||
|
|--------------|-------------------------|-------------------------|
|
||||||
|
| **启动服务** | docker-compose up -d | docker compose up -d |
|
||||||
|
| **停止服务** | docker-compose down | docker compose down |
|
||||||
|
| **查看日志** | docker-compose logs -f | docker compose logs -f |
|
||||||
|
| **列出容器** | docker-compose ps | docker compose ps |
|
||||||
|
| **停止不删除容器** | docker-compose stop | docker compose stop |
|
||||||
|
| **启动已停止的容器** | docker-compose start | docker compose start |
|
||||||
|
| **重启服务** | docker-compose restart | docker compose restart |
|
||||||
|
| **构建镜像** | docker-compose build | docker compose build |
|
||||||
|
|
||||||
|
```yaml
|
||||||
|
name: cloud-services
|
||||||
|
services:
|
||||||
|
mysql:
|
||||||
|
container_name: mysql_master
|
||||||
|
image: mysql:8.0.33
|
||||||
|
ports:
|
||||||
|
- "3306:3306"
|
||||||
|
environment:
|
||||||
|
- MYSQL_ROOT_PASSWORD=123456
|
||||||
|
- TZ=Asia/Shanghai
|
||||||
|
volumes:
|
||||||
|
# - ~/docker/docker_data/mysql/mysql_master/etc/my.cnf:/etc/my.cnf # 如果需要创建配置文件
|
||||||
|
- ~/docker/docker_data/mysql/mysql_master/etc/mysql:/etc/mysql/conf.d
|
||||||
|
- ~/docker/docker_data/mysql/mysql_master/data:/var/lib/mysql
|
||||||
|
- ~/docker/docker_data/mysql/mysql_master/backup:/backup
|
||||||
|
command:
|
||||||
|
- "--log-bin=mysql-bin"
|
||||||
|
- "--server-id=1"
|
||||||
|
- "--collation-server=utf8mb4_unicode_ci"
|
||||||
|
- "--character-set-server=utf8mb4"
|
||||||
|
- "--lower-case-table-names=1"
|
||||||
|
restart: always
|
||||||
|
privileged: true
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
redis:
|
||||||
|
container_name: redis_master
|
||||||
|
image: redis:7.0.10
|
||||||
|
ports:
|
||||||
|
- "6379:6379"
|
||||||
|
volumes:
|
||||||
|
# - ~/docker/docker_data/redis_master/redis.conf:/etc/redis/redis.conf # 需要创建配置文件
|
||||||
|
- ~/docker/docker_data/redis_master:/etc/redis # 之后要配置文件可以直接在这里创建 redis.conf
|
||||||
|
- ~/docker/docker_data/redis_master/data:/data
|
||||||
|
command:
|
||||||
|
- "--appendonly yes"
|
||||||
|
- "--daemonize no"
|
||||||
|
- "--requirepass 123456"
|
||||||
|
- "--tcp-keepalive 300"
|
||||||
|
restart: always
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
minio:
|
||||||
|
image: minio/minio
|
||||||
|
container_name: minio_master
|
||||||
|
ports:
|
||||||
|
- "9000:9000"
|
||||||
|
- "9090:9090"
|
||||||
|
volumes:
|
||||||
|
- ~/docker/docker_data/minio/data:/data
|
||||||
|
environment:
|
||||||
|
- MINIO_ROOT_USER=bunny
|
||||||
|
- MINIO_ROOT_PASSWORD=02120212
|
||||||
|
command: "server /data --console-address :9090"
|
||||||
|
restart: always
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
mongodb:
|
||||||
|
image: mongo:latest
|
||||||
|
container_name: mongodb
|
||||||
|
restart: always
|
||||||
|
privileged: true
|
||||||
|
ports:
|
||||||
|
- "27017:27017"
|
||||||
|
volumes:
|
||||||
|
- ~/docker/docker_data/mongo/data:/data/db
|
||||||
|
- ~/docker/docker_data/mongo/conf:/data/configdb
|
||||||
|
- ~/docker/docker_data/mongo/logs:/data/log
|
||||||
|
command: "mongod --config /data/configdb/mongod.conf"
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
rabbitmq:
|
||||||
|
image: rabbitmq:management
|
||||||
|
container_name: rabbitmq
|
||||||
|
restart: unless-stopped
|
||||||
|
ports:
|
||||||
|
- "5672:5672"
|
||||||
|
- "15672:15672"
|
||||||
|
volumes:
|
||||||
|
- ~/docker/docker_data/rabbitmq/data:/var/lib/rabbitmq
|
||||||
|
- ~/docker/docker_data/rabbitmq/conf:/etc/rabbitmq
|
||||||
|
- ~/docker/docker_data/rabbitmq/log:/var/log/rabbitmq
|
||||||
|
environment:
|
||||||
|
- RABBITMQ_DEFAULT_USER=admin
|
||||||
|
- RABBITMQ_DEFAULT_PASS=admin
|
||||||
|
- RABBITMQ_DEFAULT_VHOST=/
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
nacos:
|
||||||
|
image: nacos/nacos-server:v2.4.3
|
||||||
|
container_name: nacos
|
||||||
|
ports:
|
||||||
|
- "8848:8848"
|
||||||
|
- "9848:9848"
|
||||||
|
environment:
|
||||||
|
- MODE=standalone
|
||||||
|
restart: always
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
sentinel:
|
||||||
|
image: bladex/sentinel-dashboard:1.8.8
|
||||||
|
container_name: sentinel
|
||||||
|
ports:
|
||||||
|
- "8858:8858"
|
||||||
|
privileged: true
|
||||||
|
restart: always
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
seata-server:
|
||||||
|
image: apache/seata-server:2.3.0.jdk21
|
||||||
|
container_name: seata-server
|
||||||
|
ports:
|
||||||
|
- "8091:8091"
|
||||||
|
restart: always
|
||||||
|
networks:
|
||||||
|
- cloud
|
||||||
|
|
||||||
|
networks: # 定义网络
|
||||||
|
cloud: # 定义名为 auth 的网络
|
||||||
|
name: cloud # 网络名称为 auth
|
||||||
|
driver: bridge # 使用 bridge 驱动（默认）
|
||||||
|
```
|
||||||
|
|
||||||
## 注册中心
|
## 注册中心
|
||||||
|
|
||||||
|
|
@ -18,25 +255,24 @@ public class DiscoveryTest {
|
||||||
|
|
||||||
@Test
|
@Test
|
||||||
void discoveryClientTest() {
|
void discoveryClientTest() {
|
||||||
// 使用Spring Cloud标准DiscoveryClient
|
|
||||||
for (String service : discoveryClient.getServices()) {
|
for (String service : discoveryClient.getServices()) {
|
||||||
System.out.println("服务名称: " + service);
|
System.out.println(service);
|
||||||
|
|
||||||
for (ServiceInstance instance : discoveryClient.getInstances(service)) {
|
for (ServiceInstance instance : discoveryClient.getInstances(service)) {
|
||||||
System.out.println("实例IP地址: " + instance.getHost());
|
System.out.println("IP地址：" + instance.getHost());
|
||||||
System.out.println("实例端口号: " + instance.getPort());
|
System.out.println("端口号" + instance.getPort());
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
System.out.println("----------------------------------------------");
|
System.out.println("----------------------------------------------");
|
||||||
|
|
||||||
// 使用Nacos专用DiscoveryClient
|
// 两个方式一样，DiscoveryClient 是 Spring自带的 NacosDiscoveryClient是 Nacos
|
||||||
for (String service : nacosDiscoveryClient.getServices()) {
|
for (String service : nacosDiscoveryClient.getServices()) {
|
||||||
System.out.println("服务名称: " + service);
|
System.out.println(service);
|
||||||
|
|
||||||
for (ServiceInstance instance : nacosDiscoveryClient.getInstances(service)) {
|
for (ServiceInstance instance : nacosDiscoveryClient.getInstances(service)) {
|
||||||
System.out.println("实例IP地址: " + instance.getHost());
|
System.out.println("IP地址：" + instance.getHost());
|
||||||
System.out.println("实例端口号: " + instance.getPort());
|
System.out.println("端口号" + instance.getPort());
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
@ -45,11 +281,11 @@ public class DiscoveryTest {
|
||||||
|
|
||||||
### 远程调用
|
### 远程调用
|
||||||
|
|
||||||
订单模块调用远程商品模块，使用Nacos作为注册中心，可以使用`RestTemplate`进行远程调用。`RestTemplate`是线程安全的，只需注册一次即可全局使用。
|
订单模块调用远程商品模块，使用了nacos，可以使用`RestTemplate`，其中`RestTemplate`是线程安全的，只要注册一次全局都是可以使用。
|
||||||
|
|
||||||
**RestTemplate线程安全说明**
|
**RestTemplate源码**
|
||||||
|
|
||||||
`RestTemplate`继承了`InterceptingHttpAccessor`，其中使用了单例模式保证线程安全：
|
继承了`InterceptingHttpAccessor`，在`InterceptingHttpAccessor`中，使用了单例模式。
|
||||||
|
|
||||||
```java
|
```java
|
||||||
public ClientHttpRequestFactory getRequestFactory() {
|
public ClientHttpRequestFactory getRequestFactory() {
|
||||||
|
|
@ -60,6 +296,7 @@ public ClientHttpRequestFactory getRequestFactory() {
|
||||||
factory = new InterceptingClientHttpRequestFactory(super.getRequestFactory(), interceptors);
|
factory = new InterceptingClientHttpRequestFactory(super.getRequestFactory(), interceptors);
|
||||||
this.interceptingRequestFactory = factory;
|
this.interceptingRequestFactory = factory;
|
||||||
}
|
}
|
||||||
|
|
||||||
return factory;
|
return factory;
|
||||||
} else {
|
} else {
|
||||||
return super.getRequestFactory();
|
return super.getRequestFactory();
|
||||||
|
|
@ -69,9 +306,9 @@ public ClientHttpRequestFactory getRequestFactory() {
|
||||||
|
|
||||||
#### 实现远程调用
|
#### 实现远程调用
|
||||||
|
|
||||||
##### 基础调用方式
|
##### 普通方式调用
|
||||||
|
|
||||||
1. 注册`RestTemplate` Bean：
|
注册`RestTemplate`
|
||||||
|
|
||||||
```java
|
```java
|
||||||
@Bean
|
@Bean
|
||||||
|
|
@ -80,27 +317,26 @@ public RestTemplate restTemplate() {
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|
||||||
2. 实现远程调用：
|
如果我们的服务启动了多个，在下面代码中即使一个服务宕机也可以做到远程调用。
|
||||||
|
|
||||||
```java
|
```java
|
||||||
private Product getProductFromRemote(Long productId) {
|
private Product getProductFromRemote(Long productId) {
|
||||||
// 获取商品服务所有实例
|
// 获取商品服务所有及其的 IP+port
|
||||||
List<ServiceInstance> instances = discoveryClient.getInstances("service-product");
|
List<ServiceInstance> instances = discoveryClient.getInstances("service-product");
|
||||||
if (instances.isEmpty()) {
|
|
||||||
throw new RuntimeException("未找到可用的商品服务实例");
|
|
||||||
}
|
|
||||||
|
|
||||||
ServiceInstance instance = instances.get(0);
|
ServiceInstance instance = instances.get(0);
|
||||||
|
|
||||||
|
// 远程URL
|
||||||
String url = "http://" + instance.getHost() + ":" + instance.getPort() + "/api/product/" + productId;
|
String url = "http://" + instance.getHost() + ":" + instance.getPort() + "/api/product/" + productId;
|
||||||
|
|
||||||
log.info("远程调用商品服务: {}", url);
|
// 2. 远程发送请求
|
||||||
|
log.info("远程调用：{}", url);
|
||||||
return restTemplate.getForObject(url, Product.class);
|
return restTemplate.getForObject(url, Product.class);
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|
||||||
##### 负载均衡调用
|
##### 负载均衡调用
|
||||||
|
|
||||||
1. 注册`RestTemplate` Bean：
|
注册`RestTemplate`
|
||||||
|
|
||||||
```java
|
```java
|
||||||
@Bean
|
@Bean
|
||||||
|
|
@ -109,32 +345,39 @@ public RestTemplate restTemplate() {
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|
||||||
2. 使用`LoadBalancerClient`实现负载均衡：
|
使用负载均衡`LoadBalancerClient`，通过负载均衡算法动态调用远程服务。
|
||||||
|
|
||||||
```java
|
```java
|
||||||
/**
|
/**
|
||||||
* 使用负载均衡调用远程商品服务
|
* 远程调用商品模块 --- 负载均衡
|
||||||
*
|
*
|
||||||
* @param productId 商品ID
|
* @param productId 商品id
|
||||||
* @return 商品信息
|
* @return 商品对象
|
||||||
*/
|
*/
|
||||||
private Product getProductFromRemoteWithLoadBalancer(Long productId) {
|
private Product getProductFromRemoteWithLoadBalancer(Long productId) {
|
||||||
|
// 1. 获取商品服务所有及其的 IP+port
|
||||||
ServiceInstance instance = loadBalancerClient.choose("service-product");
|
ServiceInstance instance = loadBalancerClient.choose("service-product");
|
||||||
|
|
||||||
|
// 远程URL
|
||||||
String url = "http://" + instance.getHost() + ":" + instance.getPort() + "/api/product/" + productId;
|
String url = "http://" + instance.getHost() + ":" + instance.getPort() + "/api/product/" + productId;
|
||||||
|
|
||||||
log.info("负载均衡远程调用商品服务: {}", url);
|
// 2. 远程发送请求
|
||||||
|
log.info("负载均衡远程调用：{}", url);
|
||||||
return restTemplate.getForObject(url, Product.class);
|
return restTemplate.getForObject(url, Product.class);
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|
||||||
##### 注解式负载均衡调用
|
##### 负载均衡注解调用
|
||||||
|
|
||||||
> [!TIP]
|
> [!TIP]
|
||||||
> 关于注册中心宕机的影响：
|
>
|
||||||
> - 已调用过的服务：可以继续调用，因为客户端有缓存
|
> 如果远程注册中心宕机是否可以调用？
|
||||||
> - 未调用过的服务：首次调用会失败，因为需要从注册中心获取服务列表
|
>
|
||||||
|
> 调用过：远程调用不在依赖注册中心，可以通过。
|
||||||
|
>
|
||||||
|
> 没调用过：第一次发起远程调用；不能通过。
|
||||||
|
|
||||||
1. 注册带负载均衡的`RestTemplate`：
|
在`RestTemplate`上加上`@LoadBalanced`注解使用负载均衡。
|
||||||
|
|
||||||
```java
|
```java
|
||||||
@Bean
|
@Bean
|
||||||
|
|
@ -144,220 +387,60 @@ public RestTemplate restTemplate() {
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|
||||||
2. 直接使用服务名进行调用：
|
在实际的调用中并不需要再显式调用，将URL替换成服务名称即可。
|
||||||
|
|
||||||
```java
|
```java
|
||||||
/**
|
/**
|
||||||
* 使用注解式负载均衡调用远程商品服务
|
* 远程调用商品模块 --- 负载均衡注解调用
|
||||||
*
|
*
|
||||||
* @param productId 商品ID
|
* @param productId 商品id
|
||||||
* @return 商品信息
|
* @return 商品对象
|
||||||
*/
|
*/
|
||||||
private Product getProductFromRemoteWithLoadBalancerAnnotation(Long productId) {
|
private Product getProductFromRemoteWithLoadBalancerAnnotation(Long productId) {
|
||||||
|
// 远程URL，实现动态替换
|
||||||
String url = "http://service-product/api/product/" + productId;
|
String url = "http://service-product/api/product/" + productId;
|
||||||
log.info("负载均衡注解调用商品服务: {}", url);
|
|
||||||
|
// 远程发送请求
|
||||||
|
log.info("负载均衡注解调用：{}", url);
|
||||||
return restTemplate.getForObject(url, Product.class);
|
return restTemplate.getForObject(url, Product.class);
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|
||||||
### 远程配置管理
|
## 数据中心-数据隔离
|
||||||
|
|
||||||
#### 基础配置
|
|
||||||
|
|
||||||
1. 添加依赖：
|
### 名称空间
|
||||||
|
|
||||||
```xml
|
#### 创建命名空间
|
||||||
<dependency>
|
|
||||||
<groupId>com.alibaba.cloud</groupId>
|
|
||||||
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
|
|
||||||
</dependency>
|
|
||||||
```
|
|
||||||
|
|
||||||
2. 在Nacos中配置：
|
|
||||||
|
|
||||||
配置内容示例：
|
|
||||||
```yaml
|
|
||||||
order:
|
|
||||||
timeout: 30min
|
|
||||||
auto-confirm: true
|
|
||||||
```
|
|
||||||
|
|
||||||
3. 创建配置读取接口：
|
|
||||||
|
|
||||||
```java
|
|
||||||
@RestController
|
|
||||||
@RequestMapping("/api/order")
|
|
||||||
@RequiredArgsConstructor
|
|
||||||
public class OrderController {
|
|
||||||
|
|
||||||
@Value("${order.timeout}")
|
|
||||||
private String timeout;
|
|
||||||
|
|
||||||
@Value("${order.auto-confirm}")
|
|
||||||
private String autoConfirm;
|
|
||||||
|
|
||||||
@Operation(summary = "读取配置")
|
|
||||||
@GetMapping("config")
|
|
||||||
public String config() {
|
|
||||||
return "timeout: " + timeout + "\nautoConfirm: " + autoConfirm;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
```
|
|
||||||
|
|
||||||
4. 应用配置：
|
|
||||||
|
|
||||||
```yaml
|
|
||||||
server:
|
|
||||||
port: 8000
|
|
||||||
spring:
|
|
||||||
application:
|
|
||||||
name: service-order
|
|
||||||
profiles:
|
|
||||||
active: dev
|
|
||||||
config:
|
|
||||||
import:
|
|
||||||
- nacos:service-order.yml
|
|
||||||
cloud:
|
|
||||||
nacos:
|
|
||||||
server-addr: 192.168.95.135:8848
|
|
||||||
config:
|
|
||||||
import-check:
|
|
||||||
enabled: false
|
|
||||||
```
|
|
||||||
|
|
||||||
> [!CAUTION]
|
|
||||||
> 注意事项：
|
|
||||||
> - 不要在`server-addr`中使用变量引用如`${nacos.server-addr}`，这可能导致连接失败
|
|
||||||
> - 对于不需要动态配置的模块，可以禁用配置检查
|
|
||||||
|
|
||||||
#### 动态刷新配置
|
|
||||||
|
|
||||||
1. 添加`@RefreshScope`注解：
|
|
||||||
|
|
||||||
```java
|
|
||||||
@SpringBootApplication
|
|
||||||
@EnableDiscoveryClient
|
|
||||||
@RefreshScope
|
|
||||||
public class ProductServiceApplication {
|
|
||||||
public static void main(String[] args) {
|
|
||||||
SpringApplication.run(ProductServiceApplication.class, args);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
```
|
|
||||||
|
|
||||||
#### 批量配置绑定
|
|
||||||
|
|
||||||
> [!TIP]
|
> [!TIP]
|
||||||
> 使用`@ConfigurationProperties`批量绑定配置：
|
>
|
||||||
> - 无需`@RefreshScope`即可实现动态刷新
|
> 如果需要导入和我一样的命名空间，可以在项目目录下的samples文件找到相关配置
|
||||||
> - 支持中划线命名自动转为驼峰命名
|
|
||||||
|
|
||||||
1. 创建配置类：
|
分别创建：test、prod、dev
|
||||||
|
|
||||||
```java
|
|
||||||
@Configuration
|
|
||||||
@ConfigurationProperties(prefix = "order")
|
|
||||||
public class OrderProperties {
|
|
||||||
private String timeout;
|
之后到配置列表中创建配置（dev命名空间）
|
||||||
private String autoConfirm;
|
|
||||||
// getters and setters
|
|
||||||
}
|
|
||||||
|
```yml
|
||||||
|
order:
|
||||||
|
timeout: 1min
|
||||||
|
auto-confirm: 1h
|
||||||
```
|
```
|
||||||
|
|
||||||
2. 使用配置：
|
|
||||||
|
|
||||||
```java
|
```yml
|
||||||
@RestController
|
order:
|
||||||
@RequestMapping("/api/order")
|
db-url: order_dev
|
||||||
@RequiredArgsConstructor
|
|
||||||
public class OrderController {
|
|
||||||
|
|
||||||
private final OrderProperties orderProperties;
|
|
||||||
|
|
||||||
@Operation(summary = "读取配置")
|
|
||||||
@GetMapping("config")
|
|
||||||
public String config() {
|
|
||||||
return "timeout: " + orderProperties.getTimeout() +
|
|
||||||
"\nautoConfirm: " + orderProperties.getAutoConfirm();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
```
|
```
|
||||||
|
|
||||||
#### 高级配置管理
|
#### 克隆命名空间
|
||||||
|
|
||||||
1. 多环境配置：
|
|
||||||
|
|
||||||
```yaml
|
|
||||||
spring:
|
|
||||||
profiles:
|
|
||||||
active: @profileActive@
|
|
||||||
config:
|
|
||||||
import:
|
|
||||||
- nacos:service-order-${spring.profiles.active}.yml
|
|
||||||
```
|
|
||||||
|
|
||||||
2. 共享配置：
|
|
||||||
|
|
||||||
```yaml
|
|
||||||
spring:
|
|
||||||
config:
|
|
||||||
import:
|
|
||||||
- nacos:common-config.yml
|
|
||||||
- nacos:service-order.yml
|
|
||||||
```
|
|
||||||
|
|
||||||
3. 命名空间和分组：
|
|
||||||
|
|
||||||
```yaml
|
|
||||||
cloud:
|
|
||||||
nacos:
|
|
||||||
config:
|
|
||||||
namespace: dev
|
|
||||||
group: DEFAULT_GROUP
|
|
||||||
```
|
|
||||||
|
|
||||||
4. 配置优先级：
|
|
||||||
- 应用名-profile.yml (最高优先级)
|
|
||||||
- 应用名.yml
|
|
||||||
- 扩展配置
|
|
||||||
- 共享配置 (最低优先级)
|
|
||||||
|
|
||||||
### 配置监听
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
#### 实现配置监听
|
|
||||||
|
|
||||||
1. 项目启动时注册监听器：
|
|
||||||
|
|
||||||
```java
|
|
||||||
@SpringBootApplication
|
|
||||||
@EnableDiscoveryClient
|
|
||||||
public class OrderServiceApplication {
|
|
||||||
public static void main(String[] args) {
|
|
||||||
SpringApplication.run(OrderServiceApplication.class, args);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Bean
|
|
||||||
public ApplicationRunner runner(NacosConfigManager nacosConfigManager) {
|
|
||||||
return args -> {
|
|
||||||
ConfigService configService = nacosConfigManager.getConfigService();
|
|
||||||
configService.addListener("service-order.yml", "DEFAULT_GROUP", new Listener() {
|
|
||||||
@Override
|
|
||||||
public Executor getExecutor() {
|
|
||||||
return Executors.newFixedThreadPool(10);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public void receiveConfigInfo(String configInfo) {
|
|
||||||
System.out.println("配置变更内容: " + configInfo);
|
|
||||||
// 实现配置变更后的处理逻辑
|
|
||||||
System.out.println("发送配置变更通知邮件...");
|
|
||||||
}
|
|
||||||
});
|
|
||||||
System.out.println("订单服务启动完成，配置监听已注册");
|
|
||||||
};
|
|
||||||
}
|
|
||||||
}
|
|
||||||
```
|
|
||||||
|
|
||||||
|
|
||||||
|
|
|
||||||
Binary file not shown.
|
After Width: | Height: | Size: 36 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 20 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 16 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 19 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 50 KiB |
Binary file not shown.
Loading…
Reference in New Issue