java傳送HTTP和HTTPS請求
阿新 • • 發佈：2019-01-10
HTTP請求沒什麼好說的，如果您將請求HTTPS請求，在開啟連結前請先繞過SSL驗證，如下為繞過驗證的工具類
package com.weavernorth.httpconn;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import 請求HTTP
package com.weavernorth.httpconn;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import com.weavernorth.util.FileUtil;
/**
* 上傳附件到泛微系統
* @author Dylan
*
*/
public class HttpURLConnrctionToFile {
public static String uploadFile(String uploadUrl, String file) {
byte[] bbyte = FileUtil.File2byte(file);
String end = "\r\n";
String twoHyphens = "--";
String boundary = "---------------------------Dylan";
try {
URL url = new URL(uploadUrl);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setDoInput(true);
httpURLConnection.setDoOutput(true);
httpURLConnection.setUseCaches(false);
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
httpURLConnection.setRequestProperty("Charset", "UTF-8");
httpURLConnection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
String name = new File(file).getName();
DataOutputStream dos = new DataOutputStream(httpURLConnection.getOutputStream());
dos.writeBytes(twoHyphens + boundary + end);
dos.writeBytes("Content-Disposition: form-data; name=\"file1\"; filename=\""+new String(name.getBytes("UTF-8"), "ISO_8859_1")+"\"" + end);
dos.writeBytes("Content-Type: application/octet-stream;" + end);
dos.writeBytes(end);
dos.write(bbyte);
dos.writeBytes(end);
dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
dos.flush();
// 讀取伺服器返回結果
InputStream is = httpURLConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8");
BufferedReader br = new BufferedReader(isr);
String result = br.readLine();
System.out.println("response" + result);
is.close();
return result;
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
}
請求HTTPS
package com.weavernorth.httpconn;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.weavernorth.util.FileUtil;
import sun.misc.BASE64Decoder;
import weaver.conn.RecordSet;
import weaver.general.Util;
/**
* 利用 HttpsURLConnection傳送 HTTP或者HTTPS請求
* 若涉及SSL證書驗證，必須在openConnection之前繞過驗證
* 否則就會出現那個著名的異常No subject alternative names matching IP address ***.**.*.*** found
* 請將請求頭的設定放在寫出快取資料之前，否則會提示連線提前終止的異常
* @author Dylan
*/
public class HttpsURLConnectionUtil {
public static StringBuffer doPut(String param,String filed) throws IOException, JSONException {
//查詢郵件模組附件地址
RecordSet rs = new RecordSet();
//真實路徑
String strFilerealpath = "";
//查詢郵件附件相關資訊
rs.executeSql("select filename,filerealpath,filesize from mailresourcefile where id = '" + filed + "'");
if(rs.next()){
strFilerealpath = Util.null2String(rs.getString("filerealpath"));
}
// 資料處理 轉換JSON物件
JSONObject jsonParams;
JSONArray arrDetail = null;
try {
jsonParams = new JSONObject(param);
//strAuthrequest為HTTP的PUT請求中的請求協議配置項，為陣列型別
String strAuthrequest = jsonParams.getString("authrequest");
//請求協議配置項
arrDetail = new JSONArray(strAuthrequest);
} catch (JSONException e1) {
e1.printStackTrace();
}
//繞過SSL驗證
try {
SslUtils.ignoreSsl();
} catch (Exception e1) {
e1.printStackTrace();
}
//儲存響應資料
StringBuffer sbuffer=null;
System.out.println(arrDetail.getString(1));
URL uri = new URL(arrDetail.getString(1));
HttpsURLConnection conn = (HttpsURLConnection) uri.openConnection();
conn.setDoInput(true);// 允許輸入
conn.setDoOutput(true);// 允許輸出
conn.setUseCaches(false); // 不允許使用快取
conn.setRequestMethod(arrDetail.getString(0));//設定請求方式
if (arrDetail != null) {
for (int i = 2; i < arrDetail.length(); i++) {
try {
String strVal = arrDetail.getString(i);
String[] split = strVal.split(":");
String substring = strVal.substring(strVal.indexOf(split[0]) + split[0].length() + 2, strVal.length());
//設定請求頭
conn.setRequestProperty(split[0], substring);
} catch (JSONException e) {
e.printStackTrace();
}
}
System.out.println("請求頭設定完畢");
}
conn.setReadTimeout(10000);//設定讀取超時時間
conn.setConnectTimeout(10000);//設定連線超時時間
conn.connect();
OutputStream out = conn.getOutputStream();//向物件輸出流寫出資料，這些資料將存到記憶體緩衝區中
File file = new File(strFilerealpath);
//判斷檔案是否存在
if (file.exists()) {
System.out.println("上傳雲盤的檔案存在！");
out.write(FileUtil.File2byte(strFilerealpath));
out.flush();
// 關閉流物件,此時，不能再向物件輸出流寫入任何資料，先前寫入的資料存在於記憶體緩衝區中
out.close();
System.out.println("寫出完畢");
}else{
System.out.println("需要上傳雲盤的檔案不存在！");
}
sbuffer = new StringBuffer(conn.getResponseCode() + "");
// 讀取響應
// if (conn.getResponseCode()==200){
// 從伺服器獲得一個輸入流
InputStreamReader inputStream = new InputStreamReader(
conn.getInputStream());// 呼叫HttpURLConnection連線物件的getInputStream()函式,
// 將記憶體緩衝區中封裝好的完整的HTTP請求電文傳送到服務端。
BufferedReader reader = new BufferedReader(inputStream);
String lines;
sbuffer = new StringBuffer("");
while ((lines = reader.readLine()) != null) {
lines = new String(lines.getBytes(), "UTF-8");
sbuffer.append(lines);
}
reader.close();
System.out.println(sbuffer);
// 斷開連線
conn.disconnect();
return sbuffer;
}
// base64解密
public static String getFromBase64(String s) {
byte[] b = null;
String result = null;
if (s != null) {
BASE64Decoder decoder = new BASE64Decoder();
try {
b = decoder.decodeBuffer(s);
result = new String(b, "utf-8");
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}
}