HttpClient4.x工具获取如何使用

 1 /**
 2 * 封装http get post
 3 */
 4 public class HttpUtils {
 5 
 6 private static final Gson gson = new Gson();
 7 /**
 8 * get方法
 9 */
10 public static Map<String,Object> doget(String url,int timeout){
11 Map<String,Object> map = new HashMap<>();
12 CloseableHttpClient httpClient = HttpClients.createDefault();
　　//配置可有可无,根据个人情景
13 RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(timeout) //设置连接超时时间
14 .setConnectionRequestTimeout(timeout) //设置请求超时时间
15 .setSocketTimeout(timeout)
16 .setRedirectsEnabled(true) //设置允许自动重定向
17 .build();
1819 HttpGet httpGet = new HttpGet(url);
20 httpGet.setConfig(requestConfig);
21 
22 try {
23 HttpResponse httpResponse = httpClient.execute(httpGet);
24 if(httpResponse.getStatusLine().getStatusCode() == 200){
25 String jsonResult = EntityUtils.toString(httpResponse.getEntity());
26 map = gson.fromJson(jsonResult, map.getClass()); //通过gson工具,将响应流转换成map集合
27 }
28 
29 }catch(Exception e){
30 e.printStackTrace();
31 }finally{
32 try{
33 httpClient.close();
34 }catch(Exception e) {
35 e.printStackTrace();
36 }
37 }
38 return map;
39 }
40 /**
41 * 封装post,与get有异曲同工之妙
42 */
43 public static String dopost(String url,String data,int timeout){
44 CloseableHttpClient httpClient = HttpClients.createDefault();
45 RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(timeout) //设置连接超时
46 .setConnectionRequestTimeout(timeout) //设置请求超时
47 .setRedirectsEnabled(true) //设置允许自动重定向
48 .build();
49 
50 HttpPost httpPost = new HttpPost(url);
51 httpPost.setConfig(requestConfig);
52 httpPost.addHeader("Content-Type","text/html; chartset=UTF-8"); //添加头信息
53 if (data != null && data instanceof String) {//使用字符串传参
54 StringEntity stringEntity = new StringEntity(data, "UTF-8");
55 httpPost.setEntity(stringEntity);
56 }
57 try {
58 CloseableHttpResponse httpResponse = httpClient.execute(httpPost);
59 HttpEntity httpEntity = httpResponse.getEntity();
60 if (httpResponse.getStatusLine().getStatusCode() == 200){
61 String result = EntityUtils.toString(httpEntity);
62 return result;
63 }
64 } catch (Exception e) {
65 e.printStackTrace();
66 }finally {
67 try{
68 httpClient.close();
69 }catch (Exception e){
70 e.printStackTrace();
71 }
72 }
73 
74 return null;
75 
76 }
77 }