Java impersonation HTTP request remote Invoke interface tool class

Package Ln;import Java.io.bufferedreader;import Java.io.ioexception;import java.io.inputstreamreader;import Java.io.printwriter;import Java.util.hashmap;import Java.util.list;import Java.util.Map;/** * Get/post mode used to simulate HTTP requests * @author Landa **/PublicClasshttputils {/** * Send GET request * * @param URL * Destination Address * @param parameters * Request parameter, map type. * @return Remote Response results*/Publicstatic string Sendget (string url, map<string, string>Parameters) {String result=""; BufferedReaderin =Null//Read response input stream StringBuffer SB =New StringBuffer ();//Storage Parameters Stringparams ="";//The parameters after encodingTry{//Encoding Request parametersif (parameters.size () = =1){For(String Name:parameters.keySet ()) {sb.append (name). Append ("="). Append (Java.net.URLEncoder.encode (parameters.Get(name),"UTF-8")); }params=Sb.tostring (); }Else{For(String Name:parameters.keySet ()) {sb.append (name). Append ("="). Append (Java.net.URLEncoder.encode (parameters.Get(name),"UTF-8")). Append ("&"); } String Temp_params =Sb.tostring ();params = temp_params.substring (0, Temp_params.length ()-1); } String full_url = URL +"?" +Params; System.Out. println (Full_url);//Create a URL object Java.net.URL Connurl =NewJava.net.URL (Full_url);//Open URL connection java.net.HttpURLConnection httpconn =(java.net.HttpURLConnection) Connurl. OpenConnection ();//Sets the common Properties Httpconn.setrequestproperty ("Accept","*/*"); Httpconn.setrequestproperty ("Connection","Keep-alive"); Httpconn.setrequestproperty ("User-agent","mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)");//Establish an actual connectionHttpconn.connect ();//Response header gets map<string, list<string>> headers =Httpconn.getheaderfields ();//Iterate through all the response header fieldsFor(String Key:headers.keySet ()) {System.OUT.PRINTLN (key +"\t:\t"+ headers.Get(key)); }//Define the BufferedReader input stream to read the response of the URL and set the encoding methodin =New BufferedReader (NewInputStreamReader (Httpconn. getInputStream (),"UTF-8")); String Line;//Read the returned contentwhile (line =In.readline ())! =Null) {result + =Line } }Catch(Exception e) {E.printstacktrace ();}Finally{Try{if (In! =Null) {Inch. Close (); } }Catch(IOException ex) {Ex.printstacktrace ();} }Returnresult; }/** * Send POST request * * @param URL * Destination Address * @param parameters * Request parameter, map type. * @return Remote Response results*/Publicstatic string Sendpost (string url, map<string, string>Parameters) {String result ="";//Returns the result BufferedReaderin =Null//Read response input stream PrintWriterout =Null; StringBuffer SB =New StringBuffer ();//Processing Request Parameters Stringparams ="";//The parameters after encodingTry{//Encoding Request parametersif (parameters.size () = =1) {For(String Name:parameters.keySet ()) {sb.append (name). Append ("="). Append (Java.net.URLEncoder.encode (parameters.Get(name),"UTF-8")); }params = sb.tostring (); } else {for (String Name:parameters.keySet ()) {sb.append (name). Append ("="). Append (Java.net.URLEncoder.encode ( Parameters.get (name), "UTF-8")). Append ("&"); } String Temp_params = Sb.tostring (); params = temp_params.substring (0, Temp_params.length ()-1); }//Create URL object Java.net.URL connurl = new Java.net.URL (URL); Open URL connection java.net.HttpURLConnection httpconn = (java.net.HttpURLConnection) connurl. OpenConnection (); Set Common Properties Httpconn.setrequestproperty ("Accept", "*/*"); Httpconn.setrequestproperty ("Connection", "keep-alive"); Httpconn.setrequestproperty ("User-agent", "mozilla/4.0" (compatible; MSIE 8.0; Windows NT 6.1) "); Set Post mode Httpconn.setdoinput (TRUE); Httpconn.setdooutput (TRUE); Gets the output stream corresponding to the HttpURLConnection object out = new PrintWriter (Httpconn.getoutputstream ()); Send request parameter out.write (params); Flush output Stream Buffer Out.flush (); Define the BufferedReader input stream to read the response of the URL, set the encoding in = new BufferedReader (New InputStreamReader (Httpconn. getInputStream (), " UTF-8 ")); String LinE Reads the returned content while (line = In.readline ()) = null) {result + = line;}} catch (Exception e) {e.printstacktrace ();} finally {try {if (out! = null) {Out.close ();} if (in! = null) {In.close ( ); }} catch (IOException ex) {ex.printstacktrace ();}} return result; }/** * Main function, test request * * @param args */public static void main (string[] args) {map<string, string> parameters = new Ha Shmap<string, string> (); Parameters.put ("name", "Sarin"); String result =sendget ("http://www.baidu.com", parameters); SYSTEM.OUT.PRINTLN (result); } }

Java impersonation HTTP request remote Invoke interface tool class