使用MVC模式开发程序，完成数据的模糊查询(3)

[java]
package com.mars; 
 
public class Student { 
    private int id; 
    private String name; 
    private String sex; 
    private int age; 
    private String address; 
    public int getId() { 
        return id; 
    } 
    public void setId(int id) { 
        this.id = id; 
    } 
    public String getName() { 
        return name; 
    } 
    public void setName(String name) { 
        this.name = name; 
    } 
 
    public String getSex() { 
        return sex; 
    } 
    public void setSex(String sex) { 
        this.sex = sex; 
    } 
    public int getAge() { 
        return age; 
    } 
    public void setAge(int age) { 
        this.age = age; 
    } 
    public String getAddress() { 
        return address; 
    } 
    public void setAddress(String address) { 
        this.address = address; 
    } 
} 

[java]
package com.mars; 
 
import java.io.IOException; 
import java.util.ArrayList; 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import com.mars.QueryDAO; 
 
public class queryServlet extends HttpServlet { 
 
    public void doPost(HttpServletRequest request, HttpServletResponse response) 
            throws ServletException, IOException { 
        request.setCharacterEncoding("GBK"); 
        response.setCharacterEncoding("GBK"); 
        String name = request.getParameter("name"); 
        QueryDAO qd = new QueryDAO();