java 调用 google 翻译工具类

package com.skycc.util.translate; import java.net.*; import java.io.*; public class WebRequest { private static void setRequestHeader(HttpURLConnection conn){ conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"); conn.setRequestProperty("Accept", "Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); } public static String post(String url, String data, String charset) { try { URL __url = new URL(url); HttpURLConnection conn = (HttpURLConnection) __url.openConnection(); conn.setDoInput(true); conn.setDoOutput(true); setRequestHeader(conn); OutputStreamWriter bos = new OutputStreamWriter( conn.getOutputStream(), charset); bos.write(data); bos.flush(); BufferedReader bis = new BufferedReader(new InputStreamReader( conn.getInputStream(), charset)); String line = null; StringBuilder sb = new StringBuilder(); while ((line = bis.readLine()) != null) { sb.append(line); sb.append("\n"); } bis.close(); return sb.toString(); } catch (Exception e) { return null; } } public static String get(String url, String charset) { try { URL __url = new URL(url); HttpURLConnection conn = (HttpURLConnection) __url.openConnection(); setRequestHeader(conn); BufferedReader bis = new BufferedReader(new InputStreamReader( conn.getInputStream(), charset)); String line = null; StringBuilder sb = new StringBuilder(); while ((line = bis.readLine()) != null) { sb.append(line); sb.append("\n"); } bis.close(); return sb.toString(); } catch (Exception e) { e.printStackTrace(); return null; } } public static byte[] file(String url) { try { URL __url = new URL(url); HttpURLConnection conn = (HttpURLConnection) __url.openConnection(); setRequestHeader(conn); ByteArrayOutputStream bos = new ByteArrayOutputStream(); BufferedInputStream bis = new BufferedInputStream( conn.getInputStream()); byte[] b = new byte[1024]; int length = -1; while ((length = bis.read(b)) != -1) { bos.write(b, 0, length); bos.flush(); } bis.close(); bos.close(); return bos.toByteArray(); } catch (Exception e) { e.printStackTrace(); return null; } } public static String mid(String value, String left, String right) { try { int i = value.indexOf(left) + left.length(); return value.substring(i, value.indexOf(right, i)); } catch (Exception e) { e.printStackTrace(); return null; } } public static String sub(String value, String mark, int len) { try { int i = value.indexOf(mark) + mark.length(); return value.substring(i, i + len); } catch (Exception e) { e.printStackTrace(); return null; } } public static String decode(String value, String charset) { try { return URLDecoder.decode(value, charset); } catch (Exception e) { e.printStackTrace(); return null; } } public static String encode(String value, String charset) { try { return URLEncoder.encode(value, charset); } catch (Exception e) { e.printStackTrace(); return null; } } }