对接第三方平台常用的http工具

对接第三方平台常用的http工具

常用的json坐标

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.61</version>
</dependency>

RestTemplate的使用说明(推荐)

00 注入RestTemplate

@Configuration
public class MyAutoConfig {
    @Bean
    public RestTemplate createRestTemplate() {
        return new RestTemplate();
    }
}

01 带参数的Get请求

String url = "https://ad.oceanengine.com/open_api/oauth2/advertiser/get?access_token={access_token}&app_id={app_id}&secret={secret}";
Map<String, String> map = new HashMap<>();
map.put("access_token", accessToken);
map.put("app_id", prop.getAppId());
map.put("secret", prop.getSecret());
// get
String forObject = restTemplate.getForObject(url, String.class, map);

02 带请求头和参数的Get请求

//请求地址
String url = "https://ad.oceanengine.com/open_api/2/advertiser/qualification/get/";
//设置请求头 headers
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.add("Access-Token", accessToken);
requestHeaders.setContentType(MediaType.APPLICATION_JSON);

//设置是请求url
MultiValueMap<String, String> paramsMap = new LinkedMultiValueMap<>();
paramsMap.add("advertiser_id", advertiserId.toString());
UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url);
URI uri = builder.queryParams(paramsMap).build().encode().toUri();

HttpEntity httpEntity = new HttpEntity(requestHeaders);
// get ,测试时可以先用String查看效果,如果已定义接收的返回对象,则用将String替换成返回对象
ResponseEntity<String> responseEntity = restTemplate.exchange(uri, HttpMethod.GET,
         httpEntity, String.class);

03 带请求头和参数的post请求(application/json)

String url = "https://ad.oceanengine.com/open_api/oauth2/access_token/";
// headers
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.setContentType(MediaType.APPLICATION_JSON);
//请求体
Map<String, String> map = new HashMap<>();
map.put("key", value);
map.put("secret","值");

String requestBody = JSON.toJSONString(map);
// HttpEntity
HttpEntity<String> requestEntity = new HttpEntity<>(requestBody, requestHeaders);
// post
ResponseEntity<String> responseEntity = restTemplate.postForEntity(url, requestEntity,
                String.class);

 

04 通过url获取文件的byte数组

public byte[] getFileBytesByUrl(String url){
        ResponseEntity<byte[]> responseEntity = restTemplate().getForEntity(url, byte[].class);
        return responseEntity.getBody();
    }

05 通过restTemplate上传文件(字节数组)

参考资料地址: Java 通过使用 RestTemplate 传输上传字节流文件

 

public JSONObject uploadFile(byte[] bytes ,String type){
   //访问的地址
   final String uploadFileUrl = "https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token={}&type={}";
   //模拟token
   String token = "moc_token";
   String url = StrUtil.format(uploadFileUrl, token, type);
   //要上传的文件(字节数组)

ByteArrayResource resource = new ByteArrayResource(bytes){
    @Override
    public String getFilename() {
        //重写文件名称
        return "aa";
    }
};

   //参数
   MultiValueMap<String, Object> param = new LinkedMultiValueMap<>();
   param.add("Content-Disposition", "form-data");
   param.add("name", "testUpload");
   param.add("Content-Type", "application/octet-stream");
   param.add("filename", resource);
   param.add("filelength", bytes.length);
   //请求头
   HttpHeaders headers = new HttpHeaders();
   headers.setContentType(MediaType.MULTIPART_FORM_DATA);
   HttpEntity<MultiValueMap<String, Object>> request = new HttpEntity(param, headers);
   //获取结果
   ResponseEntity<JSONObject> responseEntity = restTemplate.postForEntity(url, request, JSONObject.class);
   return responseEntity.getBody();
}

 06 post请求表单方式(application/x-www-form-urlencoded)

        HttpHeaders headers = new HttpHeaders();
        // 请求头  非文件表单提交
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
        MultiValueMap<String, String> params = new LinkedMultiValueMap<>();

        //请求体参数
        params.add("id", id);
        HttpEntity<MultiValueMap<String, String>> httpEntity = new HttpEntity<>(params, headers);
        //发送http请求,返回数据格式为text/html用byte[]接收
        ResponseEntity<byte[]> responseEntity = restTemplate.postForEntity(url, httpEntity, byte[].class);
        //获取响应体中的内容
        byte[] responseEntityBody = responseEntity.getBody();
        //将byte[]转为JSON格式的字符串
        String json = new String(responseEntityBody);

 

踩坑日记:

接口文档中是get请求,测试怎么都不通时,可以换其他方式比如post

如果post参数里有集合或者数据,将对应的value也转成json格式

map.put("dataList",JSON.toJSONString(Arrays.asList("cost", "show", "avg_show_cost", "click", "ctr")) );

 

 

HttpClient的使用说明

00 依赖

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.6</version>
</dependency>

 

01 Post请求

String uri="......";
// 打开浏览器
CloseableHttpClient httpClient = HttpClients.createDefault(); 
HttpPost httpPost = new HttpPost(uri);
//headers
httpPost.setHeader("Access-Token", accessToken);
httpPost.setHeader("Content-Type", "application/json");
//requestBody
Map<String, String> map = new HashMap<>();
        map.put("advertiser_id", advertiserId.toString());
        map.put("start_date", startDate);
        map.put("end_date", endDate);
        map.put("optimize_target", "click");// todo
        map.put("page", "1");
        map.put("page_size", "2000");
        String requestBody = JSON.toJSONString(map);
// 将请求实体设置到httpPost对象中
StringEntity stringEntity = new StringEntity(requestBody, Charset.forName("UTF-8"));
httpPost.setEntity(stringEntity);
CloseableHttpResponse response = httpClient.execute(httpPost);