引入的包为:
1
2
3
4
5
6
|
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient --> < dependency > < groupId >org.apache.httpcomponents</ groupId > < artifactId >httpclient</ artifactId > < version >4.5.8</ version > </ dependency > |
实现的工具类为:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
import com.alibaba.fastjson.JSON; import org.apache.http.NameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.message.BasicNameValuePair; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class HttpClientHelper { private HttpClientHelper() { } /** * 发起POST请求 * * @param url url * @param paramMap 参数的Map格式 */ public static void sendPost(String url, Map<String, String> paramMap) { logger.info( "开始发起POST请求,请求地址为{},参数为{}" , url, JSON.toJSON(paramMap)); CloseableHttpResponse response = null ; try (CloseableHttpClient httpClient = HttpClients.createDefault()) { String encoding = "utf-8" ; //创建post请求对象 HttpPost httpPost = new HttpPost(url); //装填请求参数 List<NameValuePair> list = new ArrayList<>(); for (Map.Entry<String, String> entry : paramMap.entrySet()) { list.add( new BasicNameValuePair(entry.getKey(), entry.getValue())); } //设置参数到请求对象中 httpPost.setEntity( new UrlEncodedFormEntity(list, encoding)); httpPost.setHeader( "Content-type" , "application/x-www-form-urlencoded" ); httpPost.setHeader( "User-Agent" , "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)" ); response = httpClient.execute(httpPost); } catch (IOException e) { logger.error( "POST请求发出失败,请求的地址为{},参数为{},错误信息为{}" , url, JSON.toJSON(paramMap), e.getMessage(), e); } finally { try { if (response != null ) { response.close(); } } catch (IOException e) { logger.error( "POST请求response关闭异常,错误信息为{}" , e.getMessage(), e); } } } /** * 发起GET请求 * * @param urlParam url请求,包含参数 */ public static void sendGet(String urlParam) { logger.info( "开始发起GET请求,请求地址为{}" , urlParam); HttpGet httpGet = new HttpGet(urlParam); CloseableHttpResponse response = null ; try (CloseableHttpClient httpClient = HttpClients.createDefault()) { response = httpClient.execute(httpGet); int status = response.getStatusLine().getStatusCode(); logger.error( "GET请求发出成功,请求的地址为{},返回状态为{}" , urlParam, status); } catch (IOException e) { logger.error( "GET请求发出失败,请求的地址为{},错误信息为{}" , urlParam, e.getMessage(), e); } finally { try { if (response != null ) { response.close(); } } catch (IOException e) { logger.error( "GET请求response关闭异常,错误信息为{}" , e.getMessage(), e); } } } public static void main(String[] args) { String url = "https://jiashubing.cn/tencenttest" ; //需要传入的参数 Map<String, String> map = new HashMap<>(); map.put( "code" , "js" ); map.put( "day" , "0" ); map.put( "city" , "北京" ); map.put( "dfc" , "1" ); map.put( "charset" , "utf-8" ); sendPost(url, map); String urlParam = "https://jiashubing.cn/talk/document?fileid=1234ji贾树丙" ; sendGet(urlParam); } } |
如果POST请求想要发送Json 格式的数据,只需要修改成这样:
String json = JSON.toJSONString(paramMap);
StringEntity requestEntity = new StringEntity(json, "utf-8");
httpPost.setEntity(requestEntity);
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://www.cnblogs.com/acm-bingzi/p/httpcomponents.html