mirror of
https://github.com/sweetwisdom/everything-claude-code-zh.git
synced 2026-03-22 06:20:10 +00:00
chore: sync with upstream e7cb442 + update zh translations
This commit is contained in:
@@ -1,13 +1,13 @@
|
||||
---
|
||||
name: springboot-patterns
|
||||
description: Spring Boot architecture patterns, REST API design, layered services, data access, caching, async processing, and logging. Use for Java Spring Boot backend work.
|
||||
description: Spring Boot 架构模式、REST API 设计、分层服务、数据访问、缓存、异步处理和日志记录。适用于 Java Spring Boot 后端开发工作。
|
||||
---
|
||||
|
||||
# Spring Boot Development Patterns
|
||||
# Spring Boot 开发模式 (Spring Boot Development Patterns)
|
||||
|
||||
Spring Boot architecture and API patterns for scalable, production-grade services.
|
||||
适用于可扩展、生产级服务的 Spring Boot 架构与 API 模式。
|
||||
|
||||
## REST API Structure
|
||||
## REST API 结构
|
||||
|
||||
```java
|
||||
@RestController
|
||||
@@ -36,7 +36,7 @@ class MarketController {
|
||||
}
|
||||
```
|
||||
|
||||
## Repository Pattern (Spring Data JPA)
|
||||
## 仓储模式 (Repository Pattern - Spring Data JPA)
|
||||
|
||||
```java
|
||||
public interface MarketRepository extends JpaRepository<MarketEntity, Long> {
|
||||
@@ -45,7 +45,7 @@ public interface MarketRepository extends JpaRepository<MarketEntity, Long> {
|
||||
}
|
||||
```
|
||||
|
||||
## Service Layer with Transactions
|
||||
## 带事务的服务层 (Service Layer with Transactions)
|
||||
|
||||
```java
|
||||
@Service
|
||||
@@ -65,7 +65,7 @@ public class MarketService {
|
||||
}
|
||||
```
|
||||
|
||||
## DTOs and Validation
|
||||
## DTO 与校验 (DTOs and Validation)
|
||||
|
||||
```java
|
||||
public record CreateMarketRequest(
|
||||
@@ -81,7 +81,7 @@ public record MarketResponse(Long id, String name, MarketStatus status) {
|
||||
}
|
||||
```
|
||||
|
||||
## Exception Handling
|
||||
## 异常处理 (Exception Handling)
|
||||
|
||||
```java
|
||||
@ControllerAdvice
|
||||
@@ -101,16 +101,16 @@ class GlobalExceptionHandler {
|
||||
|
||||
@ExceptionHandler(Exception.class)
|
||||
ResponseEntity<ApiError> handleGeneric(Exception ex) {
|
||||
// Log unexpected errors with stack traces
|
||||
// 记录带有堆栈跟踪的非预期错误
|
||||
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
|
||||
.body(ApiError.of("Internal server error"));
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Caching
|
||||
## 缓存 (Caching)
|
||||
|
||||
Requires `@EnableCaching` on a configuration class.
|
||||
需要在配置类上添加 `@EnableCaching`。
|
||||
|
||||
```java
|
||||
@Service
|
||||
@@ -133,22 +133,22 @@ public class MarketCacheService {
|
||||
}
|
||||
```
|
||||
|
||||
## Async Processing
|
||||
## 异步处理 (Async Processing)
|
||||
|
||||
Requires `@EnableAsync` on a configuration class.
|
||||
需要在配置类上添加 `@EnableAsync`。
|
||||
|
||||
```java
|
||||
@Service
|
||||
public class NotificationService {
|
||||
@Async
|
||||
public CompletableFuture<Void> sendAsync(Notification notification) {
|
||||
// send email/SMS
|
||||
// 发送 邮件/短信
|
||||
return CompletableFuture.completedFuture(null);
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Logging (SLF4J)
|
||||
## 日志记录 (Logging - SLF4J)
|
||||
|
||||
```java
|
||||
@Service
|
||||
@@ -158,7 +158,7 @@ public class ReportService {
|
||||
public Report generate(Long marketId) {
|
||||
log.info("generate_report marketId={}", marketId);
|
||||
try {
|
||||
// logic
|
||||
// 业务逻辑
|
||||
} catch (Exception ex) {
|
||||
log.error("generate_report_failed marketId={}", marketId, ex);
|
||||
throw ex;
|
||||
@@ -168,7 +168,7 @@ public class ReportService {
|
||||
}
|
||||
```
|
||||
|
||||
## Middleware / Filters
|
||||
## 中间件 / 过滤器 (Middleware / Filters)
|
||||
|
||||
```java
|
||||
@Component
|
||||
@@ -190,14 +190,14 @@ public class RequestLoggingFilter extends OncePerRequestFilter {
|
||||
}
|
||||
```
|
||||
|
||||
## Pagination and Sorting
|
||||
## 分页与排序 (Pagination and Sorting)
|
||||
|
||||
```java
|
||||
PageRequest page = PageRequest.of(pageNumber, pageSize, Sort.by("createdAt").descending());
|
||||
Page<Market> results = marketService.list(page);
|
||||
```
|
||||
|
||||
## Error-Resilient External Calls
|
||||
## 容错性外部调用 (Error-Resilient External Calls)
|
||||
|
||||
```java
|
||||
public <T> T withRetry(Supplier<T> supplier, int maxRetries) {
|
||||
@@ -221,19 +221,16 @@ public <T> T withRetry(Supplier<T> supplier, int maxRetries) {
|
||||
}
|
||||
```
|
||||
|
||||
## Rate Limiting (Filter + Bucket4j)
|
||||
## 限流 (Filter + Bucket4j)
|
||||
|
||||
**Security Note**: The `X-Forwarded-For` header is untrusted by default because clients can spoof it.
|
||||
Only use forwarded headers when:
|
||||
1. Your app is behind a trusted reverse proxy (nginx, AWS ALB, etc.)
|
||||
2. You have registered `ForwardedHeaderFilter` as a bean
|
||||
3. You have configured `server.forward-headers-strategy=NATIVE` or `FRAMEWORK` in application properties
|
||||
4. Your proxy is configured to overwrite (not append to) the `X-Forwarded-For` header
|
||||
**安全注意事项**:`X-Forwarded-For` 请求头默认是不可信的,因为客户端可以伪造它。
|
||||
仅在以下情况下使用转发请求头:
|
||||
1. 你的应用位于受信任的反向代理(nginx、AWS ALB 等)之后
|
||||
2. 你已将 `ForwardedHeaderFilter` 注册为 Bean
|
||||
3. 你在 application 属性中配置了 `server.forward-headers-strategy=NATIVE` 或 `FRAMEWORK`
|
||||
4. 你的代理配置为覆盖(而非追加)`X-Forwarded-For` 请求头
|
||||
|
||||
When `ForwardedHeaderFilter` is properly configured, `request.getRemoteAddr()` will automatically
|
||||
return the correct client IP from the forwarded headers. Without this configuration, use
|
||||
`request.getRemoteAddr()` directly—it returns the immediate connection IP, which is the only
|
||||
trustworthy value.
|
||||
当 `ForwardedHeaderFilter` 配置正确时,`request.getRemoteAddr()` 将自动从转发头中返回正确的客户端 IP。如果没有此配置,请直接使用 `request.getRemoteAddr()`——它返回直接连接的 IP,这是唯一可信的值。
|
||||
|
||||
```java
|
||||
@Component
|
||||
@@ -241,32 +238,31 @@ public class RateLimitFilter extends OncePerRequestFilter {
|
||||
private final Map<String, Bucket> buckets = new ConcurrentHashMap<>();
|
||||
|
||||
/*
|
||||
* SECURITY: This filter uses request.getRemoteAddr() to identify clients for rate limiting.
|
||||
* 安全提示:此过滤器使用 request.getRemoteAddr() 来识别用于限流的客户端。
|
||||
*
|
||||
* If your application is behind a reverse proxy (nginx, AWS ALB, etc.), you MUST configure
|
||||
* Spring to handle forwarded headers properly for accurate client IP detection:
|
||||
* 如果你的应用位于反向代理(nginx、AWS ALB 等)之后,你必须配置 Spring
|
||||
* 正确处理转发头,以便准确检测客户端 IP:
|
||||
*
|
||||
* 1. Set server.forward-headers-strategy=NATIVE (for cloud platforms) or FRAMEWORK in
|
||||
* application.properties/yaml
|
||||
* 2. If using FRAMEWORK strategy, register ForwardedHeaderFilter:
|
||||
* 1. 在 application.properties/yaml 中设置 server.forward-headers-strategy=NATIVE
|
||||
* (适用于云平台) 或 FRAMEWORK
|
||||
* 2. 如果使用 FRAMEWORK 策略,请注册 ForwardedHeaderFilter:
|
||||
*
|
||||
* @Bean
|
||||
* ForwardedHeaderFilter forwardedHeaderFilter() {
|
||||
* return new ForwardedHeaderFilter();
|
||||
* }
|
||||
*
|
||||
* 3. Ensure your proxy overwrites (not appends) the X-Forwarded-For header to prevent spoofing
|
||||
* 4. Configure server.tomcat.remoteip.trusted-proxies or equivalent for your container
|
||||
* 3. 确保你的代理覆盖(而不是追加)X-Forwarded-For 请求头以防止伪造
|
||||
* 4. 为你的容器配置 server.tomcat.remoteip.trusted-proxies 或等效配置
|
||||
*
|
||||
* Without this configuration, request.getRemoteAddr() returns the proxy IP, not the client IP.
|
||||
* Do NOT read X-Forwarded-For directly—it is trivially spoofable without trusted proxy handling.
|
||||
* 如果没有这些配置,request.getRemoteAddr() 将返回代理服务器的 IP,而非客户端 IP。
|
||||
* 不要直接读取 X-Forwarded-For —— 在没有受信任代理处理的情况下,它是极易伪造的。
|
||||
*/
|
||||
@Override
|
||||
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
|
||||
FilterChain filterChain) throws ServletException, IOException {
|
||||
// Use getRemoteAddr() which returns the correct client IP when ForwardedHeaderFilter
|
||||
// is configured, or the direct connection IP otherwise. Never trust X-Forwarded-For
|
||||
// headers directly without proper proxy configuration.
|
||||
// 使用 getRemoteAddr(),它在配置了 ForwardedHeaderFilter 时返回正确的客户端 IP,
|
||||
// 否则返回直接连接的 IP。在没有正确代理配置的情况下,切勿直接信任 X-Forwarded-For 头。
|
||||
String clientIp = request.getRemoteAddr();
|
||||
|
||||
Bucket bucket = buckets.computeIfAbsent(clientIp,
|
||||
@@ -283,22 +279,22 @@ public class RateLimitFilter extends OncePerRequestFilter {
|
||||
}
|
||||
```
|
||||
|
||||
## Background Jobs
|
||||
## 后台任务 (Background Jobs)
|
||||
|
||||
Use Spring’s `@Scheduled` or integrate with queues (e.g., Kafka, SQS, RabbitMQ). Keep handlers idempotent and observable.
|
||||
使用 Spring 的 `@Scheduled` 或集成队列(如 Kafka、SQS、RabbitMQ)。保持处理程序具有幂等性和可观测性。
|
||||
|
||||
## Observability
|
||||
## 可观测性 (Observability)
|
||||
|
||||
- Structured logging (JSON) via Logback encoder
|
||||
- Metrics: Micrometer + Prometheus/OTel
|
||||
- Tracing: Micrometer Tracing with OpenTelemetry or Brave backend
|
||||
- 通过 Logback encoder 实现结构化日志(JSON)
|
||||
- 指标(Metrics):Micrometer + Prometheus/OTel
|
||||
- 链路追踪(Tracing):使用 OpenTelemetry 或 Brave 后端的 Micrometer Tracing
|
||||
|
||||
## Production Defaults
|
||||
## 生产环境默认实践 (Production Defaults)
|
||||
|
||||
- Prefer constructor injection, avoid field injection
|
||||
- Enable `spring.mvc.problemdetails.enabled=true` for RFC 7807 errors (Spring Boot 3+)
|
||||
- Configure HikariCP pool sizes for workload, set timeouts
|
||||
- Use `@Transactional(readOnly = true)` for queries
|
||||
- Enforce null-safety via `@NonNull` and `Optional` where appropriate
|
||||
- 优先使用构造函数注入,避免字段注入
|
||||
- 为 RFC 7807 错误启用 `spring.mvc.problemdetails.enabled=true` (Spring Boot 3+)
|
||||
- 根据工作负载配置 HikariCP 连接池大小并设置超时
|
||||
- 为查询使用 `@Transactional(readOnly = true)`
|
||||
- 通过 `@NonNull` 和 `Optional` 在适当时强制执行空安全(null-safety)
|
||||
|
||||
**Remember**: Keep controllers thin, services focused, repositories simple, and errors handled centrally. Optimize for maintainability and testability.
|
||||
**切记**:保持控制器(Controller)薄、服务(Service)专注、仓储(Repository)简单,并集中处理错误。针对可维护性和可测试性进行优化。
|
||||
|
||||
Reference in New Issue
Block a user