利用有道API进行翻译

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;

public class YoudaoTranslate {

 
 private String url = "http://fanyi.youdao.com/openapi.do";

 
 private String keyfrom = "";
 private String key = "";

 
 private String doctype = "xml";

 
 private String sendGet(String str) {

  // 编码成UTF-8
  try {
   str = URLEncoder.encode(str, "utf-8");
  } catch (UnsupportedEncodingException e) {
   e.printStackTrace();
  }

  StringBuffer buf = new StringBuffer();
  buf.append("keyfrom=");
  buf.append(keyfrom);
  buf.append("&key=");
  buf.append(key);
  buf.append("&type=data&doctype=");
  buf.append(doctype);
  buf.append("&version=1.1&q=");
  buf.append(str);

  String param = buf.toString();

  String result = "";
  BufferedReader in = null;
  try {
   String urlName = url + "?" + param;
   URL realUrl = new URL(urlName);

   // 打开和URL之间的连接
   URLConnection conn = realUrl.openConnection();

   // 设置通用的请求属性
   // conn.setRequestProperty("accept", "*
 public String getYouDaoValue(String str) {
  String result = null;

  // 发送GET请求翻译
  result = sendGet(str);

  // 处理XML中的值
  int re1 = result.indexOf("<errorCode>");
  int re2 = result.indexOf("</errorCode>");
  String in = result.substring(re1 + 11, re2);
  System.out.println("===========翻译是否成功============" + in);

  if (in.equals("0")) {
   System.out.println("翻译正常");

   re1 = result.indexOf("<paragraph><![CDATA[");
   re2 = result.indexOf("]]></paragraph>");
   in = result.substring(re1 + 20, re2);
   System.out.println("==========有道翻译================" + in);

   re1 = result.indexOf("<ex><![CDATA[");
   re2 = result.indexOf("]]></ex>");
   in = result.substring(re1 + 13, re2);
   System.out.println("==========有道词典-网络释义================" + in);

  } else if (in.equals("20")) {
   System.out.println("要翻译的文本过长");
   return "要翻译的文本过长";
  } else if (in.equals("30")) {
   System.out.println("无法进行有效的翻译");
   return "无法进行有效的翻译";
  } else if (in.equals("40")) {
   System.out.println("不支持的语言类型");
   return "不支持的语言类型";
  } else if (in.equals("50")) {
   System.out.println("无效的key");
   return "无效的key";
  }

  return result;
 }

 public static void main(String[] args) {

  String str = "The weather is good today";

  YoudaoTranslate test = new YoudaoTranslate();
  String temp = test.getYouDaoValue(str);
  System.out.println(temp);
 }
}