import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Jdbc_Servlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public Jdbc_Servlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/student?user=root&password=&characterEncoding=utf-8";
response.setContentType("text/html;charset=utf-8");
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
out.print("<html>");
out.print("<head><title>使用JDBC访问数据库实例</title></head>");
out.print("<body>");
try{
Class.forName(driver);
Connection conn = DriverManager.getConnection(url);
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select * from studentInfo");
while(rs.next()){
out.print("学号："+rs.getInt("stu_number")+"<br>");
out.print("姓名："+rs.getString("stu_name")+"<br>");
out.print("性别："+rs.getString("stu_gender")+"<br>");
out.print("年龄："+rs.getInt("stu_age")+"<br>");
out.print("地址："+rs.getString("stu_address")+"<br><br>");
}
if(rs != null){
rs.close();
}
if(stmt != null){
stmt.close();
}
if(conn != null){
conn.close();
}
}
catch(ClassNotFoundException ex){
ex.printStackTrace();
}
catch(SQLException ex){
ex.printStackTrace();
}
out.print("</body>");
out.print("</html>");
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}