# 新增接口

假设要对下面这个接口提供开放能力。

```java
@RestController
public class StoryDemoController {
    
    @RequestMapping("/story/get")
    public StoryResult getStory() {
        StoryResult result = new StoryResult();
        result.setId(1L);
        result.setName("海底小纵队");
        return result;
    }
}
```

只需要在方法上新增一个`@Open`注解，指定接口名即可

```java
// 添加一个@Open注解
@Open("story.demo.get")
@RequestMapping("/story/get")
public StoryResult getStory() {
    StoryResult result = new StoryResult();
    result.setId(1L);
    result.setName("海底小纵队");
    return result;
}
```

如果要加上版本号，指定`version`参数：`@Open(value = "story.demo.get", version = "2.0")`

- 重启服务，这样接口就可以使用了。

## 绑定业务参数

网关校验通过后，请求参数会传递到微服务上来，完整的参数如下所示：

```
请求参数：charset=utf-8&biz_content={"goods_remark":"iphone6"}&method=goods.add&format=json&app_id=2019032617262200001&sign_type=RSA2&version=1.0&timestamp=2019-04-29 19:18:38
```

其中biz_content部分是我们想要的，在方法上申明一个对象，对应biz_content中的内容即可完成参数绑定，并且对参数进行JSR-303校验。

**注意：接口方法必须有且只有一个对象参数，如果申明多个会出现参数绑定失败**

```java
@Open("goods.add")
@RequestMapping("/goods/add")
public Object addGoods(GoodsParam param) {
    return param;
}

@Data
public class GoodsParam {
    @NotEmpty(message = "不能为空") // 支持JSR-303校验
    private String goods_remark;
}
```

一般情况下，只需要获取业务参数即可，如果想要获取更多的参数，可在后面跟一个`HttpServletRequest`对象。

```java
@Open("goods.add")
@RequestMapping("/goods/add")
public Object addGoods(GoodsParam param, HttpServletRequest request) {
    System.out.println(request.getParameter("method"));
    return param;
}
```


## 接口命名

接口命名没有做强制要求，但我们还是推荐按照下面的方式进行命名：

接口名的命名规则为：`服务模块.业务模块.功能模块.行为`，如：

- mini.user.userinfo.get  小程序服务.用户模块.用户信息.获取
- member.register.total.get 会员服务.注册模块.注册总数.获取

如果觉得命名规则有点长可以精简为：`服务模块.功能模块.行为`，如`member.usercount.get`，前提是确保前缀要有所区分，不和其它服务冲突。

## 测试接口

- 在sop-test工程下新建一个测试用例，`StoryDemoTest`，继承TestBase

```java
public class StoryDemoTest extends TestBase {

    String url = "http://localhost:8081";
    String appId = "2019032617262200001";
    // 私钥
    String privateKey = "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";


    @Test
    public void testDemo() throws Exception {
        // 公共请求参数
        Map<String, String> params = new HashMap<String, String>();
        params.put("app_id", appId);
        // 这里对应@Open.value属性
        params.put("method", "story.demo.get");
        params.put("format", "json");
        params.put("charset", "utf-8");
        params.put("sign_type", "RSA2");
        params.put("timestamp", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
        // 这里对应@Open.version属性
        params.put("version", "1.0");

        // 业务参数
        Map<String, String> bizContent = new HashMap<>();

        params.put("biz_content", JSON.toJSONString(bizContent));

        System.out.println("----------- 请求信息 -----------");
        System.out.println("请求参数：" + buildParamQuery(params));
        System.out.println("商户秘钥：" + privateKey);
        String content = AlipaySignature.getSignContent(params);
        System.out.println("待签名内容：" + content);
        String sign = AlipaySignature.rsa256Sign(content, privateKey, "utf-8");
        System.out.println("签名(sign)：" + sign);

        params.put("sign", sign);

        System.out.println("----------- 返回结果 -----------");
        String responseData = post(url, params);// 发送请求
        System.out.println(responseData);
    }

}
```

- 请求成功后，控制台会打印：

```
----------- 请求信息 -----------
请求参数：charset=utf-8&biz_content={}&method=story.demo.get&format=json&app_id=alipay_test&sign_type=RSA2&version=1.0&timestamp=2019-03-23 15:41:22
商户秘钥：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
待签名内容：app_id=alipay_test&biz_content={}&charset=utf-8&format=json&method=story.demo.get&sign_type=RSA2&timestamp=2019-03-23 15:41:22&version=1.0
签名(sign)：YMbxTPdovi6htcn1K3USTS6/Tbg6MOAMigG6x/kG0kQFCYH8ljvxXzcY86UT056nUG3OXxnj0xkw07eV6E03HMlu7bn3/jrT3PCcV3YguhA92aWz720x2xJWdfXY13OUPS9VOCC9zIVxu6EBD+PoZ7ojYChYvOfCR5I8bR/oOc0ZLjK63PWTBdf0eFS4sybXzRf81uNLMROsMhmBDDy0Fhml3ml77qzWBIpsmq5ECZ+89rMPbkNhAUcnFAe7ik7xZIL6WcUhAOhKVa8ZQK1GMjoGnAbGRed1FbuOHZGubgffg4/vMqrY10Bcy6h9jt/zK5w9L3HVgK3aPgQlfP16Gg==
----------- 返回结果 -----------
{"story_demo_get_response":{"msg":"Success","code":"10000","name":"白雪公主","id":1},"sign":"YMbxTPdovi6htcn1K3USTS6/Tbg6MOAMigG6x/kG0kQFCYH8ljvxXzcY86UT056nUG3OXxnj0xkw07eV6E03HMlu7bn3/jrT3PCcV3YguhA92aWz720x2xJWdfXY13OUPS9VOCC9zIVxu6EBD+PoZ7ojYChYvOfCR5I8bR/oOc0ZLjK63PWTBdf0eFS4sybXzRf81uNLMROsMhmBDDy0Fhml3ml77qzWBIpsmq5ECZ+89rMPbkNhAUcnFAe7ik7xZIL6WcUhAOhKVa8ZQK1GMjoGnAbGRed1FbuOHZGubgffg4/vMqrY10Bcy6h9jt/zK5w9L3HVgK3aPgQlfP16Gg=="}
```

