Ocelot 请求聚合

Ocelot 请求聚合

 请求聚合需注意以下三点：

• 仅支持GET方式

• 下游服务返回类型要求为application/json

• 返回内容类型为application/json，不会返回404请求

以上文中项目为例：https://www.cnblogs.com/1285026182YUAN/p/15234331.html

1. 项目 OService1 增加接口

namespace OService1.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class kettleController : ControllerBase
    {
        [Route("GetSig")]
        [HttpGet]
        public IActionResult GetSig()
        {
            return new JsonResult(new { name = "kiti", size = 23 });
        }
    }
}

访问接口：

https://localhost:6001/api/kettle/GetSig

2. 项目OService2 增加接口

namespace OService2.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class CupController : ControllerBase
    {
        [Route("GetCup")]
        [HttpGet]
        public IActionResult GetCup()
        {
            return new JsonResult(new { name = "cupp", size = 1, foot = new List<string>() { "aa", "bb" } });
        }
    }
}

访问接口：

https://localhost:6002/api/cup/getcup

3. 修改Ocelot.json

{
  "Routes": [
    //路由一
    {
      "DownstreamPathTemplate": "/api/kettle/GetSig", //下游路径
      "DownstreamScheme": "https", //http,https
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost", //下游地址
          "Port": 6001 //下游端口
        }
      ],
      "UpstreamPathTemplate": "/ocelot/GetSig", //上游路径
      "UpstreamHttpMethod": [ "Get" ],
      "Key": "aggr_s1"
    },
    //路由二
    {
      "DownstreamPathTemplate": "/api/cup/getcup",
      "DownstreamScheme": "https",
      "DownstreamHostAndPorts": [
        {
          "Host": "localhost",
          "Port": 6002
        }
      ],
      "UpstreamPathTemplate": "/ocelot/getcup",
      "UpstreamHttpMethod": [ "Get" ],
      "Key": "aggr_s2"
    }
  ],
  "Aggregates": [
    {
      "RouteKeys": [
        "aggr_s1",
        "aggr_s2"
      ],
      "UpstreamPathTemplate": "/aggrssr"
    }
  ],
  "GlobalConfiguration": {
    "BaseUrl": "https://localhost:5001"
  }
}

Ocelot仅支持GET方式的请求聚合。

Ocelot总是以application/json的格式返回一个聚合请求的，

当下游服务是返回404状态码，在返回结果中，其对应的值则为空值，

即使聚合路由中所有的下游服务都返回404状态码，聚合路由的返回结果也不会是404状态码。  

 

参考：http://letyouknow.net/ocelot/ocelot-tutorial-2.html

项目：https://gitee.com/wuxincaicai/ocelothost.git