servlet到mysql_在servlet中搜索代码到mysql？

旧城等待， 2023-01-12 10:22 118阅读 0赞

我创建了一个您提到的简单演示项目,我使用jstl：core库,该库可以从here下载

web.xml中

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://xmlns.jcp.org/xml/ns/javaee"

xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app\_3\_1.xsd"

id="WebApp\_ID"

version="3.1">

TestServlet

index.html

index.htm

index.jsp

default.html

default.htm

default.jsp

Archetype Created Web Application

MyController

controller.MyController

MyController

/MyController

的index.jsp

language="java"

contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

uri="http://java.sun.com/jsp/jstl/core"

prefix="c"%>

http-equiv="Content-Type"

content="text/html; charset=UTF-8">

Insert title here

action="MyController"

method="post">

type="text"

name="name"

value="yourUserName">

type="submit"

value="Search">

items="$\{users\}"

var="user">

$\{user.id\}$\{user.name\}

MyController.java

package controller;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import domain.User;

public class MyController extends HttpServlet \{

private static final long serialVersionUID = 1L;

public MyController() \{

super();

protected void doGet(HttpServletRequest request,

HttpServletResponse response) throws ServletException, IOException \{

RequestDispatcher rd = null;

rd = request.getRequestDispatcher("index.jsp");

rd.forward(request, response);

protected void doPost(HttpServletRequest request,

HttpServletResponse response) throws ServletException, IOException \{

// Get name request parameter

String name = request.getParameter("name");

// User user1 = new User();

// User user2 = new User();

// user1.setId(0);

// user1.setName("test1");

// user2.setId(0);

// user2.setName("test2");

List users = new ArrayList();

// users.add(user1);

// users.add(user2);

//DB Operation query your users

users=query(name);

request.setAttribute("users", users);

RequestDispatcher rd = null;

rd = request.getRequestDispatcher("index.jsp");

rd.forward(request, response);

因此应从您的服务层调用MyController\#query方法,并根据您的条件进行查询(演示名称或任何形式)

编辑：确保用户具有get属性方法,例如本例中的getId和getName.

servlet到mysql_在servlet中搜索代码到mysql？

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