}{
		{"", "", "", false},
		{"abc", "", "", false},
		{"用戶名", "", "", false},
		{sr("a", nameSize), "", "", false},
		{sr("a", nameSize) + "/", "", "", false},
		{sr("a", nameSize) + "/a", sr("a", nameSize), "a", true},
		{sr("a", prefixSize) + "/", "", "", false},
		{sr("a", prefixSize) + "/a", sr("a", prefixSize), "a", true},
		{sr("a", nameSize+1), "", "", false},

    protected List<String> jvmOptions = new ArrayList<>();

    protected String lastaEnv;

    protected int timeout = -1; // sec

    protected boolean processTimeout = false;

    public abstract String execute();

    protected abstract String getExecuteType();

    public String execute(final JobExecutor jobExecutor) {
        jobExecutor(jobExecutor);
        return execute();

            return null;
        });
        kuromojiService.store(body.dictId, entity);
        return asJson(
                new ApiResult.ApiUpdateResponse().id(String.valueOf(entity.getId())).created(false).status(ApiResult.Status.OK).result());
    }

    // DELETE /api/admin/dict/kuromoji/setting/{dictId}/{id}
    @Execute
    public JsonResponse<ApiResult> delete$setting(final String dictId, final long id) {

  public boolean containsValue(@CheckForNull Object value) {
    for (Collection<V> collection : asMap().values()) {
      if (collection.contains(value)) {
        return true;
      }
    }

    return false;
  }

  @Override
  public boolean containsEntry(@CheckForNull Object key, @CheckForNull Object value) {
    Collection<V> collection = asMap().get(key);
    return collection != null && collection.contains(value);
  }

    /** metadata URI */
    protected String uri;

    /** is metadata found anywhere */
    protected boolean resolved = false;

    /** does the actual artifact for this metadata exists */
    protected boolean artifactExists = false;
    /** artifact URI */
    protected String artifactUri;

    /** error message  */
    private String error;

同时，HTTP 的请求头不区分大小写，可以使用 Python 标准样式（即 **snake_case**）进行声明。

因此，可以像在 Python 代码中一样使用 `user_agent` ，无需把首字母大写为 `User_Agent` 等形式。

如需禁用下划线自动转换为连字符，可以把 `Header` 的 `convert_underscores` 参数设置为 `False`：

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/header_params/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="11"

                    return true
                }
            }
        } catch (AbortException ignore) {
            return false
        }
        return false
    }

    static class AbortException extends RuntimeException {
    }

    static String showFileOnCommit(String commit, String filePath) {

在高级使用场景中，如果不想使用「缓存」值，而是为需要在同一请求的每一步操作（多次）中都实际调用依赖项，可以把 `Depends` 的参数 `use_cache` 的值设置为 `False` :

```Python hl_lines="1"
async def needy_dependency(fresh_value: str = Depends(get_value, use_cache=False)):
    return {"fresh_value": fresh_value}
```

## 小结

千万别被本章里这些花里胡哨的词藻吓倒了，其实**依赖注入**系统非常简单。

依赖注入无非是与*路径操作函数*一样的函数罢了。

            return null;
        });
        stopwordsService.store(body.dictId, entity);
        return asJson(
                new ApiResult.ApiUpdateResponse().id(String.valueOf(entity.getId())).created(false).status(ApiResult.Status.OK).result());
    }

    // DELETE /api/admin/dict/stopwords/setting/{dictId}/{id}
    @Execute
    public JsonResponse<ApiResult> delete$setting(final String dictId, final long id) {

            new CountDownLatch(1).await(); // the interrupt will wake us up
            return null;
          }

          @Override
          boolean isDone() {
            return false;
          }

          @Override
          String toPendingString() {
            return "";
          }

          @Override
          void afterRanInterruptiblySuccess(@Nullable Void result) {}