servlet小练习

package cn.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.servlet.util.DBUtil;

public class CollectBlogPages extends HttpServlet {

	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);
		
		
	}


	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		System.out.println("成功了");
		//获取数据
		String studentName = request.getParameter("studentName");
		String blogType = request.getParameter("blogType");
		String blogAddress = request.getParameter("blogAddress");
		
		//读取数据到数据库中
		Connection conn = DBUtil.getConnection();
		String sql = "insert into studentBlogPages(studentName,blogType,blogAddress) values(?,?,?)";
		PreparedStatement ps=null;
		int flag = 0;
		try {
			ps = conn.prepareStatement(sql);
			ps.setString(1, studentName);
			ps.setString(2, blogType);
			ps.setString(3, blogAddress);
			flag = ps.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			DBUtil.close(conn, ps);
		}
		
		if(flag==1){
			request.getRequestDispatcher("success.html").forward(request, response);
		}else{
			request.getRequestDispatcher("collectblogpages.html").forward(request, response);
		}
		
		
	}

}

　html页面

<!DOCTYPE html>
<html>
  <head>
    <title>collectblogpages.html</title>
	    
    <meta  charset="UTF-8">
    
  </head>
  
  <body>
  <form action="collectblogpages">
  姓名：<input type="text" name="studentName"/><br/>
  博客类型：<select name="blogType">
 			<option value="知乎">知乎</option>
 			<option value="博客园">博客园</option>
 			<option value="简书">简书</option>
 			<option value="开源中国">开源中国</option>
          </select><br/>
  博客地址：<input type="text" name="blogAddress"><br/>
  		<button type="submit" value="提交博客地址">提交博客地址</button>
  
  </form>
  </body>
</html>

servlet小练习

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