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java 后端请求第三方接口 包含post请求和get请求

作者:互联网

public class HttpRequest {
    private static boolean debug = true;

  //get请求 public static String sendGet(String url, String param) { if (!debug) { return ""; } String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); URLConnection connection = realUrl.openConnection(); connection.setRequestProperty("accept", "*/*"); connection.setRequestProperty("connection", "Keep-Alive"); connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); connection.connect(); Map<String, List<String>> map = connection.getHeaderFields(); for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); } in = new BufferedReader(new InputStreamReader( connection.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("异常" + e); e.printStackTrace(); } finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; } // [post请求] public static String sendPost(String url, String param) { if (!debug) { return ""; } PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); URLConnection conn = realUrl.openConnection(); conn.setRequestProperty("Content-Type", "application/json"); conn.setRequestProperty("charset", "utf-8"); conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); conn.setDoOutput(true); conn.setDoInput(true); out = new PrintWriter(new OutputStreamWriter(conn.getOutputStream(), "utf-8")); out.print(param); out.flush(); in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8")); String line; while ((line = in.readLine()) != null) { result += line; } System.out.println("sendPost"+result); } catch (Exception e) { System.out.println("异常" + e); e.printStackTrace(); } finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } } return result; } }
http请求测试工具类,请将请求地址,参数填写在main函数内

标签:java,String,get,connection,setRequestProperty,new,请求,conn,out
来源: https://www.cnblogs.com/yydxh/p/12103547.html