本文目录一览：
怎么用java 发送http报文
URL url = null;
HttpURLConnection httpurlconnection = null;
try {
url = new URL("");
// 以post方式请求
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();
// 获取响应代码
code = httpurlconnection.getResponseCode();
// 获取页面内容
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怎么主动发送http请求
实现思路就是先定义请求头内容，之后进行请求头设置。
定义请求头
LinkedHashMapString,String headers = new LinkedHashMapString,String();
headers.put("Content-type","text/xml");
headers.put("Cache-Control", "no-cache");
headers.put("Connection", "close");
给HttpPost 设置请求头
HttpPost httpPost = new HttpPost("地址");
if (headers != null) {
for (String key : headers.keySet()) {
httpPost.setHeader(key, headers.get(key));
}
}
备注：只需要在map中设置相应的请求头内容即可。根据实际需要修改即可
如何使用java http发送请求
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(); // 判断请求是否成功处理 if (responseCode == HttpStatus.SC_OK||responseCode == HttpStatus.SC_PARTIAL_CONTENT) { inputStream = mHttpURLConnection.getInputStream(); }catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }
java 怎么发送一个http请求
这里有整套的Java发送HTTP请求的代码，包括Post、Get、Delete、Put、Trace、Head、Options请求方法，链接如下：
然后线上实力Demo：