package 郵編查詢11;import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.util.HashMap; import java.util.Map; import java.util.Scanner;import net.sf.json.JSONArray; import net.sf.json.JSONObject;public class Post_check {public static final String DEF_CHATSET = "UTF-8";public static final int DEF_CONN_TIMEOUT = 30000;public static final int DEF_READ_TIMEOUT = 30000;public static String userAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36";public static final String APPKEY="***********************";//需要替換public static void request(String post){String result =null;String url ="http://v.juhe.cn/postcode/query";//請求接口地址Map params = new HashMap();//請求參數params.put("postcode",post);//郵編，如：215001params.put("key",APPKEY);try {result =net(url, params, "GET");JSONObject object = JSONObject.fromObject(result);if(object.getInt("error_code")==0){//解析JSONObject集合得到所需要部分object=object.getJSONObject("result");JSONArray array=object.getJSONArray("list");object=array.getJSONObject(0);System.out.print(object.getString("Province"));System.out.print(object.getString("City"));System.out.print(object.getString("District"));}else{System.out.println("查詢失敗，失敗詳情如下：");System.out.println(object.get("error_code")+":"+object.get("reason"));}} catch (Exception e) {e.printStackTrace();}}public static String net(String strUrl, Map params,String method) throws Exception {HttpURLConnection conn = null;BufferedReader reader = null;String rs = null;try {StringBuffer sb = new StringBuffer();if(method==null || method.equals("GET")){strUrl = strUrl+"?"+urlencode(params);}URL url = new URL(strUrl);conn = (HttpURLConnection) url.openConnection();if(method==null || method.equals("GET")){conn.setRequestMethod("GET");}else{conn.setRequestMethod("POST");conn.setDoOutput(true);}conn.setRequestProperty("User-agent", userAgent);conn.setUseCaches(false);conn.setConnectTimeout(DEF_CONN_TIMEOUT);conn.setReadTimeout(DEF_READ_TIMEOUT);conn.setInstanceFollowRedirects(false);conn.connect();if (params!= null && method.equals("POST")) {try {DataOutputStream out = new DataOutputStream(conn.getOutputStream());out.writeBytes(urlencode(params));} catch (Exception e) {// TODO: handle exception}}InputStream is = conn.getInputStream();reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));String strRead = null;while ((strRead = reader.readLine()) != null) {sb.append(strRead);}rs = sb.toString();} catch (IOException e) {e.printStackTrace();} finally {if (reader != null) {reader.close();}if (conn != null) {conn.disconnect();}}return rs;}//將map型轉為請求參數型public static String urlencode(Map<String,Object>data) {StringBuilder sb = new StringBuilder();for (Map.Entry i : data.entrySet()) {try {sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue()+"","UTF-8")).append("&");} catch (UnsupportedEncodingException e) {e.printStackTrace();}}return sb.toString();}public static void main(String args[]){System.out.println("請輸入想要查詢郵編");Scanner sc=new Scanner(System.in);String post=sc.next();System.out.print("所輸入郵編地址為：");request(post);} }

APPKEY需要替換成所申請的API對應的APPKEY

總結

以上是生活随笔為你收集整理的JAVA 实现邮编查询——输入邮编，返回使用该邮编的地区名称。的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。