后台发送post/get请求并对相应参数进行处理示例

get请求:

@GetMapping("/geo")
public HttpEntity geoConvert(
         String coords,
         String from,
         String to
) throws URISyntaxException {
    //可能集群，所壹返回list
    List<ServiceInstance> instances = discoveryClient.getInstances("bai-service");
    ServiceInstance instance = instances.get(0);

    // String host = instance.getHost();//获取ip
    URI uri = instance.getUri();//获取协议+ip+端口号

    CloseableHttpClient httpclient = HttpClients.createDefault();
   /* Map<String, Object> param = new HashMap<>();
    param.put("coords",coords);
    param.put("from",from);
    param.put("to",to);
    param.put("output", "json");
    param.put("out_put", "json");*/

    System.out.println("传过来的参数"+from);
    //创建URIBuilder
    //URIBuilder uriBuilder = new URIBuilder("http://"+"/bai/do");
    URIBuilder uriBuilder = new URIBuilder(uri+"/bai/geo");
     //URIBuilder uriBuilder = new URIBuilder("http://"+"/bai/geo");
    //设置参数
    //uriBuilder.setParameter("Param", String.valueOf(param));
    uriBuilder.setParameter("from", String.valueOf(from));
    uriBuilder.setParameter("to", String.valueOf(to));
    uriBuilder.setParameter("coords", String.valueOf(coords));

    //创建HttpGet对象，设置url访问地址
    HttpGet httpGet = new HttpGet(uriBuilder.build());
    System.out.println("发起请求的信息："+httpGet);

    String res ="";
    try {
        CloseableHttpResponse response = httpclient.execute(httpGet);
            // 获取响应实体
            HttpEntity entity = response.getEntity();
            System.out.println("--------------------------------------");
            // 打印响应状态
            System.out.println(response.getStatusLine());
            if (entity != null) {
                // 打印响应内容长度
                System.out.println("Response content length: " + entity.getContentLength());
                // 打印响应内容
                System.out.println("Response content: " + EntityUtils.toString(entity));
            }
            System.out.println("------------------------------------");
         return entity;
    }catch (Exception e){
        log.error("失败", e);
        logger.error("操作失败，请求ip={}，失败原因：{}", SysLogUtil.getRealIP(),e.getMessage(),SysLogUtil.createSysLog());
        GeoConvert geoConvert = new GeoConvert();
        geoConvert.setMessage(res);
        geoConvert.setErrorMsg(e.toString());
        return null;
    }
}

post请求：

@RestController
@RequestMapping("/net")
public class NetworkFaultMatchSrvController {
    
    private Logger logger = LoggerFactory.getLogger("httplog");

    @Autowired
    private NetworkFaultMatchSrvService networkFaultMatchSrvService;

    //nacos封装了一个工具类DiscoveryClient  获取服务中心所有清单
    @Autowired
    private DiscoveryClient discoveryClient;

    
    @ApiOperation(value = "xxx接口")
    @RequestMapping(value = "/queryCustomerToJzgz", method = RequestMethod.POST)
    public BaseResult queryCustomerToJzgz(@RequestBody Parameters parameters) throws URISyntaxException {
        long start = System.currentTimeMillis();
        BaseResult br = new BaseResult();
        //===========================================
        //可能集群，所壹返回list
        List<ServiceInstance> instances = discoveryClient.getInstances("net-service");
        ServiceInstance instance = instances.get(0);

        // String host = instance.getHost();//获取ip
        URI uri = instance.getUri();//获取协议+ip+端口号

        CloseableHttpClient httpclient = HttpClients.createDefault();

        System.out.println("传过来的参数"+parameters);
        //创建URIBuilder 
        //URIBuilder uriBuilder = new URIBuilder("http://"+"/baidu/do");
        //URIBuilder uriBuilder = new URIBuilder(uri+"/networkFaultMatchSrv/queryCustomerToJzgz");
        //URIBuilder uriBuilder = new URIBuilder("http://"+"/baidu/geo");

        // 获得Http客户端(可以理解为:你得先有一个浏览器;注意:实际上HttpClient与浏览器是不一样的)
        CloseableHttpClient httpClient = HttpClientBuilder.create().build();

        // 创建Post请求
        HttpPost httpPost = new HttpPost(uri+"/networkFaultMatchSrv/queryCustomerToJzgz");

        //设置参数
        // 我这里利用阿里的fastjson，将Object转换为json字符串;
        // (需要导入com.alibaba.fastjson.JSON包)
        String jsonString = JSON.toJSONString(parameters);
        StringEntity entity = new StringEntity(jsonString, "UTF-8");
        // post请求是将参数放在请求体里面传过去的;这里将entity放入post请求体中
        httpPost.setEntity(entity);
        httpPost.setHeader("Content-Type", "application/json;charset=utf8");

        // 响应模型
        CloseableHttpResponse response = null;
        System.out.println("发起请求的信息："+httpPost);

        try {
        // 由客户端执行(发送)Post请求
            response = httpClient.execute(httpPost);
            // 从响应模型中获取响应实体
            HttpEntity responseEntity = response.getEntity();

            System.out.println("响应状态为:" + response.getStatusLine());
            String s ="";
            if (responseEntity != null) {
                System.out.println("响应内容长度为:" + responseEntity.getContentLength());
                s=EntityUtils.toString(responseEntity);
                System.out.println("响应内容为:" + s);
            }
            br.setCode("000");
          //  String result = networkFaultMatchSrvService.queryCustomerToJzgz(parameters);
            br.setMessage("查询成功");
            br.setData(s);
        } catch (Exception e) {
            logger.error("xxx接口调用失败，请求ip={}，失败原因：{}",SysLogUtil.getRealIP(),e.getMessage(),SysLogUtil.createSysLog());
            e.printStackTrace();
        }finally {
            try {
                // 释放资源
                if (httpClient != null) {
                    httpClient.close();
                }
                if (response != null) {
                    response.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        logger.info("xxx接口，请求ip={}，耗时：{}ms，入参：{}",SysLogUtil.getRealIP(),System.currentTimeMillis()-start,parameters,SysLogUtil.createSysLog());
        return br;
    }
}