java一個接口調取另一個接口
工具類
|
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
|
package com.utils; import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.HttpURLConnection;import java.net.URL; import org.apache.log4j.Logger; import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONObject;import com.userbackend.controller.UserInfoController;import com.userbackend.model.User; //調取接口方法public class ToInterface {/*** 調測日志記錄器。*/private static final Logger DEBUGGER = Logger.getLogger(UserInfoController.class); /*** 調用對方接口方法* * @param path* 對方或第三方提供的路徑* @param data* 向對方或第三方發送的數據，大多數情況下給對方發送JSON數據讓對方解析* @param requestMethod* 請求方式* */public static StringBuffer interfaceUtil(String path, Object data, String requestMethod) {StringBuffer sb = new StringBuffer();DEBUGGER.info("請求數據：" + data);try {URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection(); // 打開和url之間的連接PrintWriter out = null;conn.setRequestMethod(requestMethod); // 請求方式// 設置通用的請求屬性conn.setRequestProperty("accept", "*/*");conn.setRequestProperty("connection", "Keep-Alive");//設置傳到另一個接口的格式為jsonconn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");// 設置是否向httpUrlConnection輸出，設置是否從httpUrlConnection讀入，此外發送post請求必須設置這兩個// 最常用的Http請求無非是get和post，get請求可以獲取靜態頁面，也可以把參數放在URL字串后面，傳遞給servlet，// post與get的 不同之處在于post的參數不是放在URL字串里面，而是放在http請求的正文內。conn.setDoOutput(true);conn.setDoInput(true);// allowUserInteraction 如果為 true，則在允許用戶交互（例如彈出一個驗證對話框）的上下文中對此 URL 進行檢查。conn.setAllowUserInteraction(false);// 獲取URLConnection對象對應的輸出流out = new PrintWriter(conn.getOutputStream());// 發送請求參數即數據out.print(data);// 緩沖數據out.flush();out.close();// 獲取URLConnection對象對應的輸入流InputStream is = conn.getInputStream();// 構造一個字符流緩存BufferedReader br = new BufferedReader(new InputStreamReader(is));String str = "";while ((str = br.readLine()) != null) {sb.append(str);}// 關閉流is.close();// 斷開連接，最好寫上，disconnect是在底層tcp socket鏈接空閑時才切斷。如果正在被其他線程使用就不切斷。// 固定多線程的話，如果不disconnect，鏈接會增多，直到收發不出信息。寫上disconnect后正常一些。conn.disconnect();// System.out.println("完整結束");DEBUGGER.info("調用app后臺接口完整結束");} catch (Exception e) {e.printStackTrace();}return sb;} } |
springboot中使用（接口一）
|
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
|
@RequestMapping(value = "/get_all_user", method = RequestMethod.POST) @ResponseBody public String get_all_user(HttpServletRequest request, HttpServletResponse response, Model model, AdminTbl admintabl,User user) { JSONObject result = new JSONObject();String[] args = { "admin_id"}; // 判斷傳來的數據是否為空 JSONObject nullcheck = ParamterNullCheck.getInstance().checkNull(admintabl, args);JSONObject param = null;param = (JSONObject) JSON.toJSON(user);DEBUGGER.info(param.toJSONString());if (nullcheck == null ) {// 查詢該 用戶是否有該權限admintabl.setUrl("/userInfo/get_all_user");RolePermissionTbl rpt = permissionService.get_permission(admintabl);if (rpt != null) {//調取接口 StringBuffer userlist= ToInterface.interfaceUtil("http://192.168.10.176:20000/user/getUserList",param.toJSONString(),"POST"); result.put("userlist", userlist);} else {result.put("msg", Constants.NO_AUTH);}}else {result = nullcheck;} return result.toJSONString(); } |
接口二
|
1
2
3
4
5
6
7
8
9
10
|
@RequestMapping(value = "/getUserList", method = RequestMethod.POST)public ResponseEntity<Response> getUserList(@RequestBody UserPageDto data) { JSONObject result = new JSONObject();// 分頁語句Page<Object> page = PageHelper.startPage(data.getPageNo(), 2);List<User> list = userService.getUserList(data);result.put("userlist", list); // 總記錄數result.put("pagetotal", page.getTotal());return success(result);} |
接口的調用與調用別人的接口
此接口調用與被調用，都是在springMVC框架下使用參數以json格式傳輸。
別人調用我們的接口，與controller方法開發類似
|
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
|
@RequestMapping("/otherUseMe.do")public void otherUseMe (HttpServletRequest request,HttpServletResponse response) throw IOException{ //基本設置 response.setContent("appliction/json;charset=utf-8"); //用來給對方傳遞參數 PrintWriter out = response.getWriter(); //系統錯誤，返回結果 Map<String,Object> exceptionMap = new HashMap<String,Object>(); exceptionMap.put("code","999"); //將錯誤代碼轉為json字符串 String exceptionStr = JSONObject.fromObject(excetionMap).toString(); //接收傳來的參數 String name = request.getParameter("name"); String gender = request.getParameter("gender"); try{ boolean flag = "業務處理"; if(失敗flag){ Map<String,Object> falseMap = new HashMap<String,Object>(); falseMap.put("code","998"); falseMap.put("result","fail"); falseMap.put("description","cry"); String falseStr = JSONObject(falseMap).toString(); out.write(falseStr); }else{ Map<String,Object> succMap = new HashMap<String,Object>(); falseMap.put("code","997"); falseMap.put("result","succ"); falseMap.put("description","smile"); String succStr = JSONObject(falseMap).toString(); out.write(succStr); } }catch(Exception e){ e.printStackTrace(); out.write(exceptionStr); return; }finally{ if(out!=null){ out.close(); } } |
我們調用別人的接口
|
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
|
public boolean IUseOthers(String name,String gender){ HttpClient client = new HttpClient(); PostMethod postMethod = new PostMethod("http://111..111.11.11:8080/---");//寫網址 postMethod.setRequestHeader("Content-type","application/x-www-form-urlencoded;charset=utf-8"); try{ postMethod.addParameter("name",name); postMethod.addParameter("gender",gender); int status = client.executeMethod(postMethod); //獲取返回信息 JSONObject jsonObject = JSONObject.fromObject(postMethod.getResponBodyAsString().toString); String code = jsonObject.getString("code"); boolean flag = false; if("999".equals(code)){ flag =true; } }catch(HttpException e){ e.printStackTrace(); }catch(IOException e){ e.printStackTrace(); }finally{ if(postMehod!=null){ postMehod.releaseConnection(); } } return flag; }} |
以上為個人經驗，希望能給大家一個參考，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/qq_33931552/article/details/80907462
