MVCベースのあいまいクエリデータクエリモジュール

シンプルなMVCベースのデータ照会モジュールを介して、あいまい検索は、要件名に基づいて行うことができます。
index.jspの：

<%@ page import="student.TestBean" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

<%
    List<TestBean> list = (List<TestBean>)request.getAttribute("list");
    if(list == null){
        list = new ArrayList<TestBean>();
    }

%>
<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
<form action="ScoreServlet">
    NAME:<input type="text" name="Name">
    <input type="submit" method="post">

    <table border="1px solid black">
        <tr>
            <th>ID</th>
            <th>Name</th>
        </tr>
<%
    for(int i = 0 ; i < list.size() ; i++){
        TestBean record = list.get(i);
%>
        <tr>
            <td><%=record.getId()%></td>
            <td><%=record.getName()%></td>
        </tr>
<%
    }
%>
    </table>
</form>
</body>
</html>

ScoreServlet.java：

import student.TestBean;
import student.TestDb;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.SQLException;
import java.util.List;

@WebServlet(name = "/ScoreServlet")
public class ScoreServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            String strName = request.getParameter("Name");
    if(strName == null)
        strName = "";

    TestDb testDb = new TestDb();
        try {
            List<TestBean> list = testDb.findByName(strName);
            request.setAttribute("list",list);
            request.getRequestDispatcher("index.jsp").forward(request,response);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

TestBean.java：

package student;
public class TestBean {
    private int id;
    private String name;

    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;
    }
}

TestDb.java：

package student;
import student.TestBean;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
public class TestDb {
    public List<TestBean> findByName(String Name) throws ClassNotFoundException,SQLException{
        List<TestBean> list = new ArrayList<TestBean>();
        String url="jdbc:h2:D:/temp/h2/mydb";
        Class.forName("org.h2.Driver");
        Connection conn = DriverManager.getConnection(url,"sa","");
        PreparedStatement pstmt = conn.prepareStatement("select ID,NAME from TEST where name like ?");
        pstmt.setString(1,"%"+Name+"%");
        ResultSet rs = pstmt.executeQuery();   //执行查询
        while(rs.next()){
            TestBean record = new TestBean();
            record.setId(rs.getInt(1));
            record.setName(rs.getString(2));
            list.add(record);
        }
        rs.close();
        pstmt.close();
        conn.close();
        return list;
    }
}

ここに画像を挿入説明

まあ少しわがままな

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MVCベースのあいまいクエリデータクエリモジュール

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