要关闭 `org.apache.http.impl.conn.PoolingHttpClientConnectionManager` 的日志输出，您可以在配置文件中添加以下设置：
在 application.yml 文件中：
```yaml
logging:
level:
org.apache.http.impl.conn.PoolingHttpClientConnectionManager: OFF
```
或者在 application.properties 文件中：
```properties
logging.level.org.apache.http.impl.conn.PoolingHttpClientConnectionManager=OFF
```
如果您希望减少而不是完全关闭这些日志，您可以将级别设置为 WARN 或 ERROR，而不是 OFF：
在 application.yml 文件中：
```yaml
logging:
level:
org.apache.http.impl.conn.PoolingHttpClientConnectionManager: WARN
```
或者在 application.properties 文件中：
```properties
logging.level.org.apache.http.impl.conn.PoolingHttpClientConnectionManager=WARN
```
记得在修改配置文件后重启应用程序，使更改生效。如果您已经有了一个 `logging.level` 部分，只需将这个新条目添加到现有部分中，而不是创建重复的部分。
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