關於java發送http指令的信息

本文目錄一覽：

• 1、怎麼用java 發送http報文
• 2、java怎麼主動發送http請求
• 3、如何使用java http發送請求
• 4、java 怎麼發送一個http請求

怎麼用java 發送http報文

URL url = null;

HttpURLConnection httpurlconnection = null;

try {

url = new URL(“”);

// 以post方式請求

httpurlconnection = (HttpURLConnection) url.openConnection();

httpurlconnection.setConnectTimeout(6000);

httpurlconnection.setReadTimeout(6000);

httpurlconnection.setDoOutput(true);

httpurlconnection.setRequestMethod(“POST”);

msg=java.net.URLEncoder.encode(msg,”utf-8″);

String username = “UserName=userPassword=pwdSrcNumber=1065DestTermID=”

+ dest+ “MsgContent=” + msg;

httpurlconnection.getOutputStream().write(

username.getBytes(“utf-8”));

httpurlconnection.getOutputStream().flush();

httpurlconnection.getOutputStream().close();

// 獲取響應代碼

code = httpurlconnection.getResponseCode();

// 獲取頁面內容

java.io.InputStream in = httpurlconnection.getInputStream();

java.io.BufferedReader breader = new BufferedReader(

new InputStreamReader(in, “gb2312”));

String str = breader.readLine();

while (str != null) {

resp+=str;

str= breader.readLine();

}

} catch (Exception e) {

resp=”err”;

} finally {

if (httpurlconnection != null)

httpurlconnection.disconnect();

}

java怎麼主動發送http請求

實現思路就是先定義請求頭內容，之後進行請求頭設置。

定義請求頭

LinkedHashMapString,String headers = new LinkedHashMapString,String();

headers.put(“Content-type”,”text/xml”);

headers.put(“Cache-Control”, “no-cache”);

headers.put(“Connection”, “close”);

給HttpPost 設置請求頭

HttpPost httpPost = new HttpPost(“地址”);

if (headers != null) {

for (String key : headers.keySet()) {

httpPost.setHeader(key, headers.get(key));

}

}

備註：只需要在map中設置相應的請求頭內容即可。根據實際需要修改即可

如何使用java http發送請求

HttpURLConnection mHttpURLConnection = null; URL mUrl = null; InputStream inputStream = null; try { String url = UrlEncode(mFileType.getStrUrl(), “UTF-8”); //mUrl = new URL(mFileType.getStrUrl()); mUrl = new URL(url); mHttpURLConnection = (HttpURLConnection) mUrl.openConnection(); mHttpURLConnection.setAllowUserInteraction(true); mHttpURLConnection.setRequestMethod(“GET”); mHttpURLConnection.setRequestProperty(“Range”, “bytes=” + startPos + “-” + endPos); mHttpURLConnection.setRequestProperty(“Connection”, “Keep-Alive”); int responseCode = mHttpURLConnection.getResponseCode(); long length = mHttpURLConnection.getContentLength(); // 判斷請求是否成功處理 if (responseCode == HttpStatus.SC_OK||responseCode == HttpStatus.SC_PARTIAL_CONTENT) { inputStream = mHttpURLConnection.getInputStream(); }catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }

java 怎麼發送一個http請求

這裡有整套的Java發送HTTP請求的代碼，包括Post、Get、Delete、Put、Trace、Head、Options請求方法，鏈接如下：

然後線上實力Demo：