📄 iplogservlet.java
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package cn.com.tarena.web.servlet.day2;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
public class IPLogServlet extends HttpServlet {
PrintWriter logger;
public void init() throws ServletException {
try {
FileOutputStream fout = new FileOutputStream(getInitParameter("FILE_PATH"),true);
logger = new PrintWriter(fout);
} catch (IOException e) {
throw new ServletException(e.getMessage());
}
}
public void service(ServletRequest request, ServletResponse response)
throws ServletException, java.io.IOException {
System.out.println(request.getRemoteAddr());
synchronized(this){
logger.println(new Date());
logger.print(":");
logger.println(request.getRemoteAddr());
logger.flush();
}
//设置MINE格式
response.setContentType("text/html");
//获得能够往客户端输出HTML的书写器
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println(" <title>IP</title>");
out.println("</head>");
out.println("<body>");
out.println("<h2 align=\"center\">Your information has been logged on the server!</h2>");
out.println("<hr>");
out.println(getInitParameter("FILE_PATH"));
out.println("</body>");
out.println("</html>");
out.close();
}
public void destroy() {
logger.close();
}
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