Sends a GET method to the specified URL to obtain a resource, encoding Problem.

HTTP Encoding. today, encountering the data obtained on the Web page, using HTTP GET request to access the URL to obtain resources, the network has a corresponding method. I've never known anything before. rest style, now I want to just open a controller, and then make the person can call your back Code. ((value= "xxx"))

@Controller
public class Getwebdatacontroller {

Public list<jsonobject> roadlist = new Arraylist<jsonobject> ();
Public list<jsonobject> jamlist = new Arraylist<jsonobject> ();
Public list<jsonobject> numlist = new Arraylist<jsonobject> ();

/*public Getwebdatacontroller () {
System.out.println ("initialize getwebdatacontroller");
}*/

@Autowired
Private Insertalldataservice service;

@ResponseBody
@RequestMapping (value= "/getwebdata.htm", produces = "text/html;charset=utf-8")
Public String getwebdata (httpservletrequest request, httpservletresponse Response)
Throws parserconfigurationexception, saxexception, ioexception, documentexception{
This.setaccessheader (response);
Roadlist.clear ();
Jamlist.clear ();
Numlist.clear ();
/*string url1 = Com.enjoyor.soa.traffic.server.ubms.util.SpringReader.getProperty ("url1") */
String URL1 = "http://www.hzjtydzs.com/web/xmlsvc/currentroadspeed.aspx?rank=%e7%bb%86%e7%b2%92%e5%ba%a6& Order=asc&areaid=%e6%a0%b8%e5%bf%83%e5%8c%ba ";
String url2 = "http://www.hzjtydzs.com/web/xmlsvc/currentNumberData.aspx";
String Url3 = "http://www.hzjtydzs.com/web/xmlsvc/currentJamIndex.aspx";
String returnstring = "";
string[] urls = new string[] {url1, url2, url3};
GetNode getnode = new GetNode ();
for (int i = 0; i < urls.length; i++) {
String URL = urls[i];
String param = "";
String Filelac = Httprequest.sendget (url, param);

// error location, start because it is under the Tomcat server, there is no way to debug, only through the log and print to collect information, found to be documenthelper.parsetext (filelac); So I began to modify here, but soon found that the helper files are published by others, can not be modified, then can only be processed before This. Here is I did not think of, the thinking of the obstruction, I did not go into the HttpRequest to see, I thought this is also released a good class, did not expect to modify This. yes, mistakes occur in parsetext, but the real root of the problem is in the previous Code.
Document doc = Documenthelper.parsetext (filelac);
Element Rootelt = doc.getrootelement (); Get root node
Getnode.getnodes (rootelt, "");
If (url.indexof ("numberdata") > 0) {
Numlist = (list<jsonobject>) getnode.getnodes (rootelt, ""). get ("numlist");//traverse all nodes starting from the root node
}
If (url.indexof ("roadspeed") > 0) {
Roadlist = (list<jsonobject>) getnode.getnodes (rootelt, ""). get ("roadlist");
}
If (url.indexof ("jamindex") > 0) {
Jamlist = (list<jsonobject>) getnode.getnodes (rootelt, ""). get ("jamlist");
}
}
If (numlist.size () >0) {
Returnstring + = numlist.tostring ();
}
If (roadlist.size () >0) {
Returnstring + = roadlist.tostring ();
}
If (jamlist.size () >0) {
Returnstring + = jamlist.tostring ();
}
Return returnstring;
}

/**
* Cross-domain Declaration
* @param response
*/
private void Setaccessheader (httpservletresponse Response) {
Response.setheader ("access-control-allow-origin", "*");
}

}

Backup

Package com.enjoyor.soa.traffic.server.sjjx.http;

Import java.io.BufferedReader;
Import java.io.IOException;
Import java.io.InputStreamReader;
Import java.io.PrintWriter;
Import java.net.URL;
Import java.net.URLConnection;
Import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
Import org.apache.commons.httpclient.HttpClient;
Import org.apache.commons.httpclient.methods.GetMethod;
Import org.apache.commons.httpclient.params.HttpMethodParams;

public class HttpRequest {

/**
* Request to send a GET method to the specified URL
* URL to send request @param URL
* @param the PARAM request parameter, the request parameter should be in the form of name1=value1&name2=value2.
* @return The response result of the remote resource represented by the URL
*/
public static string Sendget (string url, string Param) {
String result = "";
String strURL = "";
try {

HttpClient httpclient=new HttpClient ();
GetMethod getmethod=null;
if (param = = "") {
strURL = url;
}else{
strURL = URL + "?" + param;
}
Getmethod=new GetMethod (strurl);
Getmethod.getparams (). setparameter (httpmethodparams.retry_handler, new Defaulthttpmethodretryhandler ());
Httpclient.executemethod (getmethod);
byte[] bresposebody = Getmethod.getresponsebody ();
String strresposebody = new String (bresposebody);
String strresposebody = new string (getmethod.getresponsebody (). getBytes ("iso8859-1"), "utf-8"); //modify the Code
result = strresposebody;

} catch (Exception E) {
System.out.println ("send GET Request Exception!") "+ e);
E.printstacktrace ();
}
Return result;
}

/**
* Request to send the Post method to the specified URL
* URL to send request @param URL
* @param the PARAM request parameter, the request parameter should be in the form of name1=value1&name2=value2.
* @return The response result of the remote resource represented
*/
public static string Sendpost (string url, string Param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realurl = new URL (url);
Opening and linking between URLs
URLConnection conn = Realurl.openconnection ();
To set common request properties
Conn.setrequestproperty ("accept", "*/*");
Conn.setrequestproperty ("connection", "keep-alive");
Conn.setrequestproperty ("user-agent",
"mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ");
To send a post request, you must set the following two lines
Conn.setdooutput (true);
Conn.setdoinput (true);
Gets the output stream corresponding to the URLConnection object
out = new PrintWriter (conn.getoutputstream ());
Send Request parameters
Out.print (param);
Buffer for flush output stream
Out.flush ();
Defines the response of the BufferedReader input stream to read the URL
in = new BufferedReader (
New InputStreamReader (conn.getinputstream ()));
String line;
While (line = In.readline ()) = null) {
Result + = line;
}
} catch (Exception E) {
System.out.println ("send POST Request Exception!") "+e);
E.printstacktrace ();
}
Use the finally block to close the output stream, input stream
finally{
try{
If (out!=null) {
Out.close ();
}
If (in!=null) {
In.close ();
}
}
Catch (ioexception Ex) {
Ex.printstacktrace ();
}
}
Return result;
}

/* public static void main (String Args[]) throws parserconfigurationexception, saxexception, ioexception{
String url= "http://www.hzjtydzs.com/web/xmlsvc/currentJamIndex.aspx?_=1482462966169";
String param = "";
String Filelac = Sendget (url, param);
Element AAA = Xmlhelper.getrootelement (filelac);
}*/
}

Sends a GET method to the specified URL to obtain a resource, encoding Problem.