```

⤴️ 👥 🔜 📣 *➡ 🛠️ 🔢* & 🔗 🍵 `async def`, ⏮️ 😐 `def`,:

```Python hl_lines="2"
@app.get("/users/{user_id}", response_model=schemas.User)
def read_user(user_id: int, db: Session = Depends(get_db)):
    db_user = crud.get_user(db, user_id=user_id)
    ...
```

/// info

🚥 👆 💪 🔗 👆 🔗 💽 🔁, 👀 [🔁 🗄 (🔗) 💽](../advanced/async-sql-databases.md){.internal-link target=_blank}.

///

```

然后我们应该声明*路径操作函数*和不带 的依赖关系`async def`，只需使用普通的`def`，如下：

```Python hl_lines="2"
@app.get("/users/{user_id}", response_model=schemas.User)
def read_user(user_id: int, db: Session = Depends(get_db)):
    db_user = crud.get_user(db, user_id=user_id)
    ...
```

/// info

如果您需要异步连接到关系数据库，请参阅[Async SQL (Relational) Databases](https://fastapi.tiangolo.com/zh/advanced/async-sql-databases/)

///

        dest.setBbb("bbb");
        dest.setDdd("ddd");

        BeanUtil.copyBeanToBean(src, dest);
        assertThat(dest.getAaa(), is("111"));
        assertThat(dest.getBbb(), is(nullValue()));
        assertThat(dest.getDdd(), is("ddd"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testCopy_BeanToBean_ExcludeNull() throws Exception {
        final MyClass src = new MyClass();

            return null;
        }

    }


    /**
     * 
     * {@inheritDoc}
     *
     * @see jcifs.DfsResolver#getDc(jcifs.CIFSContext, java.lang.String)
     */
    @Override
    public SmbTransport getDc ( CIFSContext tf, String domain ) throws SmbAuthException {
        if ( tf.getConfig().isDfsDisabled() )
            return null;

                            }
                        }
                    }
                }

                // org.eclipse.aether.ConfigurationProperties.HTTP_HEADERS => Map<String, String>
                if (headers != null) {
                    configProps.put(ConfigurationProperties.HTTP_HEADERS + "." + server.getId(), headers);
                }

    public void store(final ElevateWord elevateWord) {
        final boolean isNew = elevateWord.getId() == null;
        final String[] labelTypeIds = elevateWord.getLabelTypeIds();

        elevateWordBhv.insertOrUpdate(elevateWord, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });
        final String elevateWordId = elevateWord.getId();
        if (labelTypeIds != null) {
            if (isNew) {

                if (!repos.containsKey(repo.getId())) {
                    repos.put(repo.getId(), repo);
                }
            }

            for (ArtifactRepository repo : pomRepositories) {
                if (!repos.containsKey(repo.getId())) {
                    repos.put(repo.getId(), repo);
                }
            }

    @Override
    public MavenExecutionRequest addProxy(Proxy proxy) {
        Objects.requireNonNull(proxy, "proxy cannot be null");

        for (Proxy p : getProxies()) {
            if (p.getId() != null && p.getId().equals(proxy.getId())) {
                return this;
            }
        }

        getProxies().add(proxy);

        return this;
    }

    @Override

                    try {
                        wagonManager.getArtifactMetadata(metadata, repository, file, policy.getChecksumPolicy());
                    } catch (ResourceDoesNotExistException e) {
                        getLogger().debug(metadata + " could not be found on repository: " + repository.getId());

        if (this == object) {
            return true;
        }

        return object instanceof PluginDescriptor && getId().equals(((PluginDescriptor) object).getId());
    }

    public int hashCode() {
        return 10 + getId().hashCode();
    }

    public MojoDescriptor getMojo(String goal) {
        if (getMojos() == null) {
            return null; // no mojo in this POM