使用HttpClient工具类发起Restful API调用 

 1 import com.alibaba.fastjson.JSONObject;
 2 import org.apache.http.HttpResponse;
 3 import org.apache.http.NameValuePair;
 4 import org.apache.http.client.ClientProtocolException;
 5 import org.apache.http.client.HttpClient;
 6 import org.apache.http.client.entity.UrlEncodedFormEntity;
 7 import org.apache.http.client.methods.HttpGet;
 8 import org.apache.http.client.methods.HttpPost;
 9 import org.apache.http.impl.client.HttpClients;
10 import org.apache.http.message.BasicNameValuePair;
11 import org.apache.http.util.EntityUtils;
12 import java.io.IOException;
13 import java.util.ArrayList;
14 import java.util.List;
15 import java.util.Map;
16 
17 public class ClientUtils {
18  
19     /**
20     * POST             请求
21     * @param url       请求地址
22     * @param params    请求参数
23     * @param encode    编码格式
24     * @return
25     * @throws ClientProtocolException
26     * @throws IOException
27     */
28    public String doPostMethod(String url, Map<String,String> params, String encode) throws ClientProtocolException, IOException {
29        HttpClient httpclient = HttpClients.createDefault();
30        HttpPost httpPost = new HttpPost(url);
31        if (params != null) {
32            List<NameValuePair> form = new ArrayList<NameValuePair>();
33            for (String name : params.keySet()) {
34                form.add(new BasicNameValuePair(name,params.get(name)));
35            }
36            UrlEncodedFormEntity entity = new UrlEncodedFormEntity(form,encode);
37            httpPost.setEntity(entity);
38            //设置请求头
39            httpPost.setHeader("Accept","text/plain;charset=utf-8");
40            httpPost.setHeader("Cache-Control","no-cache");
41        }
42        HttpResponse response = httpclient.execute(httpPost);
43        String result = EntityUtils.toString(response.getEntity());
44        return result;
45    }
46    
47    /**
48     * GET
49     * @param url
50     * @param params
51     * @param encode
52     * @return
53     * @throws ClientProtocolException
54     * @throws IOException
55     */
56    public JSONObject doGetMethod(String url,List<NameValuePair> params,String encode) throws ClientProtocolException, IOException{
57        HttpClient httpclient = HttpClients.createDefault();
58      //参数转换为字符串
59        String paramsStr = EntityUtils.toString(new UrlEncodedFormEntity(params, encode));
60        url = url + "?" + paramsStr;
61        // 创建httpget.
62        HttpGet httpget = new HttpGet(url);
63        System.out.println("executing request " + httpget.getURI());
64        HttpResponse response = httpclient.execute(httpget);
65        String result = EntityUtils.toString(response.getEntity());
66        JSONObject obj = JSONObject.parseObject(result);
67        return obj;
68    }
69    
70 }
71 
72 @ResponseBody
73  @RequestMapping(value = "/exportVehicleRelation", method = RequestMethod.POST)
74  @ApiOperation(value = "车辆相关导出", notes = "车辆相关导出")
75  public List<ExportVehicleRelationDto> exportVehicleList(@ModelAttribute VehicleListQuery vehicleListQuery) throws IOException {
76             LoginInfoService loginSessionBean = this.loginInfoService;
77             Map<String,String> params = new HashMap<>();
78             params.put("bindType","2");
79             params.put("pageNo", vehicleListQuery.getPageNo().toString());
80             params.put("pageSize", vehicleListQuery.getPageSize() == 10 ? "500" : vehicleListQuery.getPageSize().toString());
81             params.put("appIds", StringUtils.isEmpty(vehicleListQuery.getAppIds())?deliveryHomeVehicleAppId:vehicleListQuery.getAppIds().toString());
82             params.put("vehicleNumber", vehicleListQuery.getVehicleNumber());
83             params.put("vehicleType", vehicleListQuery.getVehicleType());
84             params.put("vehicleProperty", vehicleListQuery.getVehicleProperty());
85             params.put("vehicleOverallLength", vehicleListQuery.getVehicleOverallLength());
86             params.put("organization", vehicleListQuery.getOrganization());
87             params.put("partyId", loginSessionBean==null?"":loginSessionBean.getMerchantId().toString());
88             String s = new ClientUtils().doPostMethod("http://mt-magicCube-vip:8080/magicCubeService/dHome/vehicle/exportVehicleList", params, "UTF-8");
89             List<ExportVehicleRelationDto> exportVehicleRelationDtos = JSONArray.parseArray(s,ExportVehicleRelationDto.class);
90             return exportVehicleRelationDtos;
91  }

 

posted @ 2020-04-01 14:11  骑着蜗牛看海呀  阅读(1277)  评论(0)    收藏  举报