次のコードを使用してGoogleにデータを投稿しようとしましたが、常に405エラーが発生しました。誰か教えてもらえますか?
package com.tom.labs;
import java.net.*;
import java.io.*;
public class JavaHttp {
public static void main(String[] args) throws Exception {
File data = new File("D:\\in.txt");
File result = new File("D:\\out.txt");
FileOutputStream out = new FileOutputStream(result);
OutputStreamWriter writer = new OutputStreamWriter(out);
Reader reader = new InputStreamReader(new FileInputStream(data));
postData(reader,new URL("http://google.com"),writer);//Not working
//postData(reader,new URL("http://google.com/search"),writer);//Not working
sendGetRequest("http://google.com/search", "q=Hello");//Works properly
}
public static String sendGetRequest(String endpoint,
String requestParameters) {
String result = null;
if (endpoint.startsWith("http://")) {
// Send a GET request to the servlet
try {
// Send data
String urlStr = endpoint;
if (requestParameters != null && requestParameters.length() > 0) {
urlStr += "?" + requestParameters;
}
URL url = new URL(urlStr);
URLConnection conn = url.openConnection();
// Get the response
BufferedReader rd = new BufferedReader(new InputStreamReader(
conn.getInputStream()));
StringBuffer sb = new StringBuffer();
String line;
while ((line = rd.readLine()) != null) {
sb.append(line);
}
rd.close();
result = sb.toString();
} catch (Exception e) {
e.printStackTrace();
}
}
System.out.println(result);
return result;
}
/**
* Reads data from the data reader and posts it to a server via POST
* request. data - The data you want to send endpoint - The server's address
* output - writes the server's response to output
*
* @throws Exception
*/
public static void postData(Reader data, URL endpoint, Writer output)
throws Exception {
HttpURLConnection urlc = null;
try {
urlc = (HttpURLConnection) endpoint.openConnection();
try {
urlc.setRequestMethod("POST");
} catch (ProtocolException e) {
throw new Exception(
"Shouldn't happen: HttpURLConnection doesn't support POST??",
e);
}
urlc.setDoOutput(true);
urlc.setDoInput(true);
urlc.setUseCaches(false);
urlc.setAllowUserInteraction(false);
urlc.setRequestProperty("Content-type", "text/xml; charset=UTF-8");
OutputStream out = urlc.getOutputStream();
try {
Writer writer = new OutputStreamWriter(out, "UTF-8");
pipe(data, writer);
writer.close();
} catch (IOException e) {
throw new Exception("IOException while posting data", e);
} finally {
if (out != null)
out.close();
}
InputStream in = urlc.getInputStream();
try {
Reader reader = new InputStreamReader(in);
pipe(reader, output);
reader.close();
} catch (IOException e) {
throw new Exception("IOException while reading response", e);
} finally {
if (in != null)
in.close();
}
} catch (IOException e) {
e.printStackTrace();
throw new Exception("Connection error (is server running at "
+ endpoint + " ?): " + e);
} finally {
if (urlc != null)
urlc.disconnect();
}
}
/**
* Pipes everything from the reader to the writer via a buffer
*/
private static void pipe(Reader reader, Writer writer) throws IOException {
char[] buf = new char[1024];
int read = 0;
while ((read = reader.read(buf)) >= 0) {
writer.write(buf, 0, read);
}
writer.flush();
}
}