packagewzh.Http;importjava.io.BufferedReader;importjava.io.IOException;importjava.io.InputStreamReader;importjava.io.PrintWriter;importjava.net.URL;importjava.net.URLConnection;importjava.util.List;importjava.util.Map;public classHttpRequest {/*** 向指定URL發送GET方法的請求
*
*@paramurl
* 發送請求的URL
*@paramparam
* 請求參數，請求參數應該是 name1=value1&name2=value2 的形式。
*@returnURL 所代表遠程資源的響應結果*/
public staticString sendGet(String url, String param) {
String result= "";
BufferedReader in= null;try{
String urlNameString= url + "?" +param;
URL realUrl= newURL(urlNameString);//打開和URL之間的連接
URLConnection connection =realUrl.openConnection();//設置通用的請求屬性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");//建立實際的連接
connection.connect();//獲取所有響應頭字段
Map> map =connection.getHeaderFields();//遍歷所有的響應頭字段
for(String key : map.keySet()) {
System.out.println(key+ "--->" +map.get(key));
}//定義 BufferedReader輸入流來讀取URL的響應
in = new BufferedReader(newInputStreamReader(
connection.getInputStream()));
String line;while ((line = in.readLine()) != null) {
result+=line;
}
}catch(Exception e) {
System.out.println("發送GET請求出現異常！" +e);
e.printStackTrace();
}//使用finally塊來關閉輸入流
finally{try{if (in != null) {
in.close();
}
}catch(Exception e2) {
e2.printStackTrace();
}
}returnresult;
}/*** 向指定 URL 發送POST方法的請求
*
*@paramurl
* 發送請求的 URL
*@paramparam
* 請求參數，請求參數應該是 name1=value1&name2=value2 的形式。
*@return所代表遠程資源的響應結果*/
public staticString sendPost(String url, String param) {
PrintWriter out= null;
BufferedReader in= null;
String result= "";try{
URL realUrl= newURL(url);//打開和URL之間的連接
URLConnection conn =realUrl.openConnection();//設置通用的請求屬性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");//發送POST請求必須設置如下兩行
conn.setDoOutput(true);
conn.setDoInput(true);//獲取URLConnection對象對應的輸出流
out = newPrintWriter(conn.getOutputStream());//發送請求參數
out.print(param);//flush輸出流的緩沖
out.flush();//定義BufferedReader輸入流來讀取URL的響應
in = newBufferedReader(newInputStreamReader(conn.getInputStream()));
String line;while ((line = in.readLine()) != null) {
result+=line;
}
}catch(Exception e) {
System.out.println("發送 POST 請求出現異常！"+e);
e.printStackTrace();
}//使用finally塊來關閉輸出流、輸入流
finally{try{if(out!=null){
out.close();
}if(in!=null){
in.close();
}
}catch(IOException ex){
ex.printStackTrace();
}
}returnresult;
}
}public static voidmain(String[] args) {//發送 GET 請求
String s=HttpRequest.sendGet("http://localhost:6144/Home/RequestString", "key=123&v=456");
System.out.println(s);//發送 POST 請求
String sr=HttpRequest.sendPost("http://localhost:6144/Home/RequestPostString", "key=123&v=456");
System.out.println(sr);
}
...)
