# 查询应用程序模板列表 - ListAppTemplates
#### 功能介绍
查询应用程序模板列表（该功能目前仅支持华东-上海一、华北-北京四）
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-functiongraph/functiongraph_06_0200.html)。
#### 授权信息
账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限，具体权限要求请参见[权限和授权项](https://support.huaweicloud.com/api-functiongraph/functiongraph_06_1100.html)。
#### URI
GET /v2/{project_id}/fgs/application/templates
表1路径参数 
| 参数         | 是否必选 | 参数类型   | 描述                                                                                                     |
|:---|:---|:---|:---|
| project_id | 是    | String | 租户项目 ID，获取方式请参见[获取项目ID](https://support.huaweicloud.com/api-functiongraph/functiongraph_06_0260.html)。 |
   
表2Query参数 
| 参数       | 是否必选 | 参数类型   | 描述                                                                                                                                                                                            |
|:---|:---|:---|:---|
| marker   | 否    | String | 本次查询起始位置，默认值0 缺省值:**0** 最小长度:**0** 最大长度:**64**              |
| maxitems | 否    | String | 本次查询最大返回的数据条数，最大值500，默认值100 缺省值:**0** 最小长度:**0** 最大长度:**64** |
| runtime  | 否    | String | 模板执行运行时 缺省值:**all**                                                                                                                              |
| category | 否    | String | 模板类别 缺省值:**all**                                                                                                                                 |
   
#### 请求参数
表3请求Header参数 
| 参数           | 是否必选 | 参数类型   | 描述                                                                                                     |
|:---|:---|:---|:---|
| X-Language   | 否    | String | 模板语言 缺省值:**en-us**                                           |
| X-Auth-Token | 是    | String | 用户Token。 通过调用IAM服务获取用户Token接口获取（响应消息头中X-Subject-Token的值）。 |
| Content-Type | 是    | String | 消息体的类型（格式）                                                                                             |
   
#### 响应参数
**状态码: 200**
表4响应Body参数 
| 参数          | 参数类型                                                                                                  | 描述         |
|:---|:---|:---|
| templates   | Array of [ListAppTemplatesResult] objects | 函数应用程序模板列表 |
| next_marker | Long                                                                                                  | 下次读取位置     |
| count       | Long                                                                                                  | 应用程序模板总数   |
   
 表5ListAppTemplatesResult 
| 参数          | 参数类型   | 描述               |
|:---|:---|:---|
| id          | String | 模板id             |
| name        | String | 模板名称             |
| runtime     | String | 模板执行运行时          |
| category    | String | 模板使用场景           |
| description | String | 模板描述             |
| image       | String | 模板镜像文件（base64编码） |
   
**状态码: 400**
表6响应Body参数 
| 参数         | 参数类型   | 描述   |
|:---|:---|:---|
| error_code | String | 错误码  |
| error_msg  | String | 错误信息 |
   
**状态码: 401**
表7响应Body参数 
| 参数         | 参数类型   | 描述   |
|:---|:---|:---|
| error_code | String | 错误码  |
| error_msg  | String | 错误信息 |
   
**状态码: 403**
表8响应Body参数 
| 参数         | 参数类型   | 描述   |
|:---|:---|:---|
| error_code | String | 错误码  |
| error_msg  | String | 错误信息 |
   
**状态码: 404**
表9响应Body参数 
| 参数         | 参数类型   | 描述   |
|:---|:---|:---|
| error_code | String | 错误码  |
| error_msg  | String | 错误信息 |
   
**状态码: 500**
表10响应Body参数 
| 参数         | 参数类型   | 描述   |
|:---|:---|:---|
| error_code | String | 错误码  |
| error_msg  | String | 错误信息 |
   
#### 请求示例
查询函数应用程序模板列表。
```
GET /v2/{project_id}/fgs/application/templates
```
#### 响应示例
**状态码: 200**
查询应用程序模板列表成功。
```
{
  "templates" : [ {
    "id" : "5351xxxx-xxxx-xxxx-xxxx-xxxxxxfa2d27",
    "name" : "AI Drawing Stable-Diffusion",
    "runtime" : "http",
    "category" : "AI",
    "description" : "AI Drawing",
    "image" : "iVBORw0KGgxxxxxx"
  } ],
  "next_marker" : 11,
  "count" : 11
}
```
#### SDK代码示例
SDK代码示例如下。
#### Java
```
package com.huaweicloud.sdk.test;
import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.functiongraph.v2.region.FunctionGraphRegion;
import com.huaweicloud.sdk.functiongraph.v2.*;
import com.huaweicloud.sdk.functiongraph.v2.model.*;
public class ListAppTemplatesSolution {
    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext， which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example， AK and SK are stored in environment variables for authentication. Before running this example， set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        ICredential auth = new BasicCredentials()
                .withAk(ak)
                .withSk(sk);
        FunctionGraphClient client = FunctionGraphClient.newBuilder()
                .withCredential(auth)
                .withRegion(FunctionGraphRegion.valueOf("<YOUR REGION>"))
                .build();
        ListAppTemplatesRequest request = new ListAppTemplatesRequest();
        request.withMarker("<marker>");
        request.withMaxitems("<maxitems>");
        request.withRuntime("<runtime>");
        request.withCategory("<category>");
        try {
            ListAppTemplatesResponse response = client.listAppTemplates(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}
```
#### Python
```
# coding: utf-8
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkfunctiongraph.v2.region.functiongraph_region import FunctionGraphRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkfunctiongraph.v2 import *
if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext， which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example， AK and SK are stored in environment variables for authentication. Before running this example， set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = __import__('os').getenv("CLOUD_SDK_AK")
    sk = __import__('os').getenv("CLOUD_SDK_SK")
    credentials = BasicCredentials(ak, sk) \
    client = FunctionGraphClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(FunctionGraphRegion.value_of("<YOUR REGION>")) \
        .build()
    try:
        request = ListAppTemplatesRequest()
        request.marker = "<marker>"
        request.maxitems = "<maxitems>"
        request.runtime = "<runtime>"
        request.category = "<category>"
        response = client.list_app_templates(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
```
#### Go
```
package main
import (
"fmt"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    functiongraph "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/functiongraph/v2"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/functiongraph/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/functiongraph/v2/region"
)
func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext， which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example， AK and SK are stored in environment variables for authentication. Before running this example， set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()
    client := functiongraph.NewFunctionGraphClient(
        functiongraph.FunctionGraphClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())
    request := &model.ListAppTemplatesRequest{}
markerRequest:= "<marker>"
request.Marker = &markerRequest
maxitemsRequest:= "<maxitems>"
request.Maxitems = &maxitemsRequest
runtimeRequest:= "<runtime>"
request.Runtime = &runtimeRequest
categoryRequest:= "<category>"
request.Category = &categoryRequest
response， err := client.ListAppTemplates(request)
if err == nil {
        fmt.Printf("%+v\n"， response)
    } else {
        fmt.Println(err)
    }
}
```
#### 更多
更多编程语言的SDK代码示例，请参见[API Explorer](https://console.huaweicloud.com/apiexplorer/#/openapi/FunctionGraph/sdk?api=ListAppTemplates)的代码示例页签，可生成自动对应的SDK代码示例。
#### 状态码
| 状态码 | 描述                            |
|:---|:---|
| 200 | list templates successfully   |
| 400 | Bad Request 请求错误。             |
| 401 | Unauthorized 鉴权失败。            |
| 403 | Forbidden 没有操作权限。             |
| 404 | Not Found 找不到资源。              |
| 500 | Internal Server Error 服务内部错误。 |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-functiongraph/ErrorCode.html)。