java:将复选框值以0(未选中)和1(已选中)的形式存储到mysql数据库,并正确检索以向用户显示
我想从mysql中检索复选框值,我以1(选中)和0(未选中)的形式存储了它,但我不知道如何检索它。或者是否有其他选项可用于相同的操作 以下是我的jsp和servlet代码: HobbiesTest.jspjava:将复选框值以0(未选中)和1(已选中)的形式存储到mysql数据库,并正确检索以向用户显示,mysql,jsp,servlets,Mysql,Jsp,Servlets,我想从mysql中检索复选框值,我以1(选中)和0(未选中)的形式存储了它,但我不知道如何检索它。或者是否有其他选项可用于相同的操作 以下是我的jsp和servlet代码: HobbiesTest.jsp <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HT
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="HobbiesTestServlet" method="post">
<input type = "checkbox" name = "Hobbies" value = 'Dancing' >Dancing
<input type = "checkbox" name = "Hobbies" value = 'Reading'>Reading
<input type = "checkbox" name = "Hobbies" value = 'Singing' >Singing
<input type = "checkbox" name = "Hobbies" value = 'Programming'>Programming
<input type = "checkbox" name = "Hobbies" value = 'Sleeping'>Sleeping
<input type = "submit" value = 'Submit'>
</form>
</body>
</html>
在此处插入标题
跳舞
阅读
歌唱
程序设计
睡觉
HobbiesTestServlet.java
package com.fulcrum.EmpForm;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class HobbiesTestServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public HobbiesTestServlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int danceCheck = 0;
int singCheck = 0;
int readCheck = 0;
int programCheck = 0;
int sleepCheck = 0;
List<String> hobbiesList = new ArrayList<String>();
String[] hobbies = request.getParameterValues("Hobbies");
if(hobbies != null){
for(int i=0;i<hobbies.length;i++){
System.out.println("hobbies are"+hobbies[i]);
hobbiesList.add(hobbies[i]);
}
}
if(hobbiesList.contains("Dancing")){
danceCheck = 1;
}
if(hobbiesList.contains("Reading")){
readCheck = 1;
}
if(hobbiesList.contains("Singing")){
singCheck = 1;
}
if(hobbiesList.contains("Programming")){
programCheck = 1;
}
if(hobbiesList.contains("Sleeping")){
sleepCheck = 1;
}
System.out.println(danceCheck);
System.out.println(readCheck);
System.out.println(singCheck);
System.out.println(programCheck);
System.out.println(sleepCheck);
}
}
package com.fulcrum.EmpForm;
导入java.io.IOException;
导入java.util.ArrayList;
导入java.util.List;
导入javax.servlet.ServletException;
导入javax.servlet.http.HttpServlet;
导入javax.servlet.http.HttpServletRequest;
导入javax.servlet.http.HttpServletResponse;
公共类HobbiesTestServlet扩展了HttpServlet{
私有静态最终长serialVersionUID=1L;
公共爱好TestServlet(){
超级();
}
受保护的void doGet(HttpServletRequest请求,HttpServletResponse响应)抛出ServletException,IOException{
}
受保护的void doPost(HttpServletRequest请求、HttpServletResponse响应)引发ServletException、IOException{
int-danceCheck=0;
int singCheck=0;
int readCheck=0;
int programCheck=0;
int sleepCheck=0;
List hobbiesList=新建ArrayList();
String[]嗜好=request.getParameterValues(“嗜好”);
if(嗜好!=null){
对于(inti=0;iIn summary,您希望获得表的结构,不是吗?不。我将向该表添加更多列,如first_name、last_name等。但在最后,我希望在jsp文件中显示所有用户输入的值。首先,现在只处理这些复选框。因此,最后的输出应该是这样的(您的爱好是:跳舞、阅读等)Sp您的表格在输出中的列数是定制的,取决于选中的复选框?