項(xiàng)目需要對(duì)接外部接口，將圖片文件流發(fā)送到外部接口，下面代碼就是HttpsURLConnection如何上傳文件流：
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/** * HttpsURLConnection上傳文件流 * * @param args * @throws Exception */ public static void main(String[] args) throws Exception { //本地圖片 java.io.File file = new java.io.File("/Users/jikukalun/Pictures/id1.jpg"); FileInputStream fileInputStream = new FileInputStream(file); //對(duì)接外部接口 String urlString = "************"; URL url = new URL(urlString); HttpsURLConnection con = (HttpsURLConnection) url.openConnection(); // 設(shè)置是否向httpUrlConnection輸出，因?yàn)檫@個(gè)是post請(qǐng)求，參數(shù)要放在 // http正文內(nèi)，因此需要設(shè)為true, 默認(rèn)情況下是false; con.setDoOutput(true); // 設(shè)置是否從httpUrlConnection讀入，默認(rèn)情況下是true; con.setDoInput(true); // 設(shè)定請(qǐng)求的方法為"POST"，默認(rèn)是GET con.setRequestMethod("POST"); // Post 請(qǐng)求不能使用緩存 con.setUseCaches(false); // 設(shè)定傳送的內(nèi)容類型是可序列化的java對(duì)象 // (如果不設(shè)此項(xiàng),在傳送序列化對(duì)象時(shí),當(dāng)WEB服務(wù)默認(rèn)的不是這種類型時(shí)可能拋java.io.EOFException)// con.setRequestProperty("Content-type", "application/x-java-serialized-object"); OutputStream out = con.getOutputStream(); //讀取本地圖片文件流 FileInputStream inputStream = new FileInputStream(file); byte[] data = new byte[2048]; int len = 0; int sum = 0; while ((len = inputStream.read(data)) != -1) { //將讀取到的本地文件流讀取到HttpsURLConnection,進(jìn)行上傳 out.write(data, 0, len); sum = len + sum; } System.out.println("上傳圖片大小為:" + sum); out.flush(); inputStream.close(); out.close(); int code = con.getResponseCode(); //獲取post請(qǐng)求返回狀態(tài) System.out.println("code=" + code + " url=" + url); if (code == 200) { InputStream inputStream2 = con.getInputStream(); ByteArrayOutputStream bos = new ByteArrayOutputStream(); while ((len = inputStream2.read(data)) != -1) { bos.write(data, 0, len); } inputStream2.close(); String content = bos.toString(); bos.close(); System.out.println("result =" + content); //將返回的json格式的字符串轉(zhuǎn)化為json對(duì)象 JSONObject json = JSONObject.parseObject(content); try { System.out.println("name=" + json.getString("name") + ", people=" + json.getString("people") + ", sex=" + json.getString("sex") + ", id_number=" + json.getString("id_number") + ", type=" + json.getString("type") + ", address=" + json.getString("address") + ", birthday=" + json.getString("birthday")); } catch (JSONException e) { e.printStackTrace(); } } //斷開HttpsURLConnection連接 con.disconnect(); } |
引用jar包：
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import com.alibaba.fastjson.JSONException;import com.alibaba.fastjson.JSONObject;import javax.net.ssl.HttpsURLConnection;import java.io.*;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL; |
以上這篇HttpsURLConnection上傳文件流(實(shí)例講解)就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持服務(wù)器之家。
