+ ", protocolScheme=" + protocolScheme + ", updatedBy=" + updatedBy + ", updatedTime=" + updatedTime + ", username="
                + username + ", docMeta=" + docMeta + "]";
    }

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();

        return getEntity(form, username, currentTime).map(entity -> {
            entity.setUpdatedBy(username);
            entity.setUpdatedTime(currentTime);

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final String username = systemHelper.getUsername();
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        return getEntity(form, username, currentTime).map(entity -> {
            entity.setUpdatedBy(username);
            entity.setUpdatedTime(currentTime);

func (c *SiteReplicationSys) PeerJoinReq(ctx context.Context, arg madmin.SRPeerJoinReq) error {
	var ourName string
	for d, p := range arg.Peers {
		if d == globalDeploymentID() {
			ourName = p.Name
			break
		}
	}
	if ourName == "" {
		return errSRSelfNotFound
	}

	sa, _, err := globalIAMSys.GetServiceAccount(ctx, arg.SvcAcctAccessKey)

        try {
            final RESULT result = entityType.newInstance();
            result.setGidNumber(DfTypeUtil.toLong(source.get("gidNumber")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {

            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setExpiredTime(DfTypeUtil.toLong(source.get("expiredTime")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setParameterName(DfTypeUtil.toString(source.get("parameter_name")));
            result.setPermissions(toStringArray(source.get("permissions")));

            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setUpdatedBy(DfTypeUtil.toString(source.get("updatedBy")));
            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));

            result.setHandlerParameter(DfTypeUtil.toString(source.get("handlerParameter")));
            result.setHandlerScript(DfTypeUtil.toString(source.get("handlerScript")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setPermissions(toStringArray(source.get("permissions")));
            result.setSortOrder(DfTypeUtil.toInteger(source.get("sortOrder")));

            result.setExcludedPaths(DfTypeUtil.toString(source.get("excludedPaths")));
            result.setIncludedPaths(DfTypeUtil.toString(source.get("includedPaths")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setPermissions(toStringArray(source.get("permissions")));
            result.setSortOrder(DfTypeUtil.toInteger(source.get("sortOrder")));

## 定义 `Form` 参数

创建表单（`Form`）参数的方式与 `Body` 和 `Query` 一样：

```Python hl_lines="7"
{!../../docs_src/request_forms/tutorial001.py!}
```

例如，OAuth2 规范的 "密码流" 模式规定要通过表单字段发送 `username` 和 `password`。

<abbr title="specification">该规范</abbr>要求字段必须命名为 `username` 和 `password`，并通过表单字段发送，不能用 JSON。

使用 `Form` 可以声明与 `Body` （及 `Query`、`Path`、`Cookie`）相同的元数据和验证。

/// info | "说明"

`Form` 是直接继承自 `Body` 的类。

///

/// tip | "提示"