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Chinese.java
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import java.lang.*;
import java.io.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
import java.util.Calendar;
import java.util.Date;
import java.io.FileWriter;
import java.text.SimpleDateFormat;
import javax.servlet.*;
import javax.servlet.ServletException;
import javax.servlet.http.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Chinese extends HttpServlet
{
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, NullPointerException
{
response.setContentType("text/html;charset=UTF-8");
request.setCharacterEncoding("UTF-8");
PrintWriter logger = new PrintWriter(new FileWriter("/opt/tomcat8/logs/clogger"+System.currentTimeMillis(), true));
String queryString = request.getParameter("cwords"); // 取得輸入的查詢字串
CTermFrequence ctf = new CTermFrequence();
String filename = "", line = "", hitsCount = "", url = "";
CPair tmp = new CPair("No files", 0);
Map<String, CPair> map = new HashMap<String, CPair>();
FileReader fr;
BufferedReader br;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS");
Date current = new Date();
try
{
/*查詢並取得三種的詞頻即Total*/
map = ctf.call(queryString);
/*取得全部後刪除這筆，因為Total 要在第1行列印，但在 Map 中未必是第1行，while 時不要走訪它*/
tmp = map.get("total");
map.remove("total");
/*呼叫 Google Char 繪圖*/
CDrawChart chart = new CDrawChart(); // 建立 DrawChart 物件 (tmp)
url = chart.draw(map); // 取得結合繪圖參數的 API Acess URL (tmp)
}//end of try
catch(Exception e)
{
logger.println(sdf.format(current)+": "+e.toString());
StackTraceElement[] stack = e.getStackTrace();
for(StackTraceElement s: stack)
{
logger.println(s.toString()+"\n");
}
}
logger.println(sdf.format(current)+": "+"Finished!");
logger.close();
/*HTML Output*/
PrintWriter out = response.getWriter(); // 建立輸出物件
Collection collection = map.values();
Iterator iterator = collection.iterator();
out.println("<html>");
out.println("<body>");
out.println("<a href='http://localhost:8080/2013IRHW'>回查詢頁</a><br>");
out.println("<p>查詢字詞： "+queryString+"</p>");
out.println("<p>總共找到： "+tmp.getCount() +"</p>");
out.println("<p><img alt='Google Chart' src='"+ url +"'></p>");
while(iterator.hasNext())
{
tmp = (CPair)iterator.next();
out.println("<p>"+tmp.getNumber()+"： "+tmp.getCount()+"</p>");
}
out.println("</body>");
out.println("</html>");
}//end of doPost
}