直接貼代碼吧：
首先，index_test.jsp頁面的代碼如下：
復(fù)制代碼 代碼如下:
%@ page language="java" pageEncoding="utf-8"%>
%@ page contentType="text/html;charset=utf-8"%>nbsp;
%nbsp;
nbsp; nbsp;request.setCharacterEncoding("UTF-8");nbsp;
nbsp; nbsp;response.setCharacterEncoding("UTF-8");nbsp;
nbsp; nbsp;response.setContentType("text/html;charset=utf-8");nbsp;
%>
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
title>人員操作/title>
META http-equiv=Content-Type content="text/html; charset=utf-8">
style>
#popDivAdd,#popDivDelete {
position: absolute;
visibility: hidden;
overflow: hidden;
border: 2px solid #AEBBCA;
background-color: #EEF1F8;
cursor: move;
padding: 1px;
}
#popTitle {
background: #9DACBF;
height: 20px;
line-height: 20px;
padding: 1px;
}
#popForm {
padding: 2px;
}
.title_left {
font-weight: bold;
padding-left: 5px;
float: left;
}
.title_right {
float: right;
}
#popTitle .title_right a {
color: #000;
text-decoration: none;
}
#popTitle .title_right a:hover {
text-decoration: underline;
color: #FF0000;
}
/style>
script>
function showPopup(type) {//彈出層
//var objDiv = null;//objDiv是目標(biāo)div
if(type == 'add'){
objDiv = document.getElementById("popDivAdd");
}
else
if(type = 'delete'){
objDiv = document.getElementById("popDivDelete");
}
objDiv.style.top = "50px";//設(shè)置彈出層距離上邊界的距離
objDiv.style.left = "200px";//設(shè)置彈出層距離左邊界的距離
objDiv.style.width = "300px";//設(shè)置彈出層的寬度
objDiv.style.height = "220px";//設(shè)置彈出層的高度
//objDiv.style.display = "block";
objDiv.style.visibility = "visible";
}
function hidePopup(type) {//關(guān)閉層
//var objDiv = null;//objDiv是目標(biāo)div
if(type == 'add'){
objDiv = document.getElementById("popDivAdd");
}
elsenbsp;
if(type = 'delete'){
objDiv = document.getElementById("popDivDelete");
}
objDiv.style.visibility = "hidden";
}
/script>
/head>
body>
!-- 表單div -->
form action="insert_test.jsp" method="post">
p>
nbsp;ID :input type="text" name="id" value="0" />/br>nbsp;
姓名:input type="text" name="name" value="" />/br>
性別:input type="text" name="sex" value="" />/br>
年齡:input type="text" name="age" value="" />/br>
/p>nbsp;
nbsp;nbsp;nbsp; input type="submit" value="提交" />nbsp;nbsp;
nbsp;nbsp; input type="reset" value="重置" />nbsp;nbsp;
nbsp;nbsp; input type="reset" value="取消" onclick="hidePopup('add')" />
/form>
/div>
/div>
div id="popDivDelete">!-- 刪除人員的div -->
div id="popTitle">!-- 標(biāo)題div -->
span class="title_left">刪除人員/span> span class="title_right">
a href="#" onclick="hidePopup('delete');">關(guān)閉/a> /span>
/div>
div id="popForm">!-- 表單div -->
form action="delete_test.jsp" method="post">
p>
nbsp;ID :input type="text" name="id" value="" /> /br>nbsp;
姓名:input type="text" name="name" value="" /> /br>
/p>nbsp;
nbsp;nbsp;nbsp; input type="submit" value="提交" />nbsp;nbsp;
nbsp;nbsp; input type="reset" value="重置" />nbsp;nbsp;
nbsp;nbsp; input type="reset" value="取消" onclick="hidePopup('delete')" />
/form>
/div>
/div>
p>
input name="" type="button" onclick="location.href = 'query_test.jsp'" value="查詢" />nbsp;nbsp;
input name="" type="button" onclick="showPopup('add')" value="添加" />nbsp;nbsp;
input name="" type="button" onclick="showPopup('delete')" value="刪除" />
/p>
script type="text/javascript">
/*-------------------------鼠標(biāo)左鍵拖動---------------------*/
/*--------當(dāng)不需要實現(xiàn)此功能時，可以將這一部分代碼刪除------------*/
var objDiv = document.getElementById("popDiv");
var isIE = document.all ? true : false;//判斷瀏覽器類型
document.onmousedown = function(evnt) {//當(dāng)鼠標(biāo)左鍵按下后執(zhí)行此函數(shù)
var evnt = evnt ? evnt : event;
if (evnt.button == (document.all ? 1 : 0)) {
mouseD = true;//mouseD為鼠標(biāo)左鍵狀態(tài)標(biāo)志，為true時表示左鍵被按下
}
}
objDiv.onmousedown = function(evnt) {
objDrag = this;//objDrag為拖動的對象
var evnt = evnt ? evnt : event;
if (evnt.button == (document.all ? 1 : 0)) {
mx = evnt.clientX;
my = evnt.clientY;
objDiv.style.left = objDiv.offsetLeft + "px";
objDiv.style.top = objDiv.offsetTop + "px";
if (isIE) {
objDiv.setCapture();
//objDiv.filters.alpha.opacity = 50;//當(dāng)鼠標(biāo)按下后透明度改變
} else {
window.captureEvents(Event.MOUSEMOVE);//捕獲鼠標(biāo)拖動事件
//objDiv.style.opacity = 0.5;//當(dāng)鼠標(biāo)按下后透明度改變
}
}
}
document.onmouseup = function() {
mouseD = false;//左鍵松開
objDrag = "";
if (isIE) {
objDiv.releaseCapture();
//objDiv.filters.alpha.opacity = 100;//當(dāng)鼠標(biāo)左鍵松開后透明度改變
} else {
window.releaseEvents(objDiv.MOUSEMOVE);//釋放鼠標(biāo)拖動事件
//objDiv.style.opacity = 1;//當(dāng)鼠標(biāo)左鍵松開后透明度改變
}
}
document.onmousemove = function(evnt) {
var evnt = evnt ? evnt : event;
if (mouseD == true objDrag) {
var mrx = evnt.clientX - mx;
var mry = evnt.clientY - my;
objDiv.style.left = parseInt(objDiv.style.left) + mrx + "px";
objDiv.style.top = parseInt(objDiv.style.top) + mry + "px";
mx = evnt.clientX;
my = evnt.clientY;
}
}
/script>
/body>
/html>
query_test.jsp頁面代碼如下：
復(fù)制代碼 代碼如下:
%@ page language="java" import="java.util.*,java.sql.*" pageEncoding="utf-8"%>
%@ page contentType="text/html;charset=utf-8"%>
%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=utf-8");
%>
html>
body>
%
Connection con=null;
String url="jdbc:mysql://localhost/html_db?user=rootpassword=123456";
//html_db為數(shù)據(jù)庫名
Class.forName("org.gjt.mm.mysql.Driver").newInstance();//新建實例
Connection conn= DriverManager.getConnection(url);//建立連接
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
String sql="select * from person_tb";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next()) {%>
ID：%=rs.getString("id")%> /br>
姓名：%=rs.getString("name")%>/br>
性別：%=rs.getString("sex")%>/br>
年齡：%=rs.getString("age")%>/br>/br>
%}%>
%out.print("恭喜你!數(shù)據(jù)庫操作成功！ ");%>
%
rs.close();
stmt.close();
conn.close();
%>
/br>
input name="" type="button" onclick="location.href = 'index_test.jsp'" value="返回" />
/body>
/html>
insert_test.jsp頁面代碼如下：
復(fù)制代碼 代碼如下:
%@ page language="java" import="java.util.*,java.sql.*" pageEncoding="utf-8"%>
%@ page contentType="text/html;charset=utf-8"%>
%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=utf-8");
%>
htnl>
head>
title>往數(shù)據(jù)庫插入數(shù)據(jù)/title>
/head>
body>
%
String id=request.getParameter("id"); //從表單獲得
String name=request.getParameter("name"); //從表單獲得
String sex=request.getParameter("sex"); //從表單獲得
String age=request.getParameter("age"); //從表單獲得
try
{
/** 連接數(shù)據(jù)庫參數(shù) **/
String driverName = "com.mysql.jdbc.Driver"; //驅(qū)動名稱
String DBUser = "root"; //mysql用戶名
String DBPasswd = "123456"; //mysql密碼
String DBName = "html_db"; //數(shù)據(jù)庫名
String connUrl = "jdbc:mysql://localhost/" + DBName + "?user=" + DBUser + "password=" + DBPasswd;
Class.forName(driverName).newInstance();
Connection conn = DriverManager.getConnection(connUrl);
Statement stmt = conn.createStatement();
stmt.executeQuery("SET NAMES UTF8");
String insert_sql = "insert into person_tb values('" + id + "','" + name + "','" + sex + "','" + age + "')";
String query_sql = "select * from person_tb";
try {
stmt.execute(insert_sql);
}catch(Exception e) {
e.printStackTrace();
}
try {
ResultSet rs = stmt.executeQuery(query_sql);
while(rs.next()) {
%>
ID：%=rs.getString("id")%> /br>
姓名：%=rs.getString("name")%> /br>
性別：%=rs.getString("sex")%> /br>
年齡：%=rs.getString("age")%> /br> /br>
%
}
}catch(Exception e) {
e.printStackTrace();
}
//rs.close();
stmt.close();
conn.close();
}catch (Exception e) {
e.printStackTrace();
}
%>
/br>
input name="" type="button" onclick="location.href = 'index_test.jsp'" value="返回" />nbsp;nbsp;
/body>
/html>
delete_test.jsp頁面的代碼如下：
復(fù)制代碼 代碼如下:
%@ page language="java" import="java.util.*,java.sql.*" pageEncoding="UTF-8"%>
%@ page contentType="text/html;charset=UTF-8"%>
%nbsp;
nbsp; nbsp;request.setCharacterEncoding("UTF-8");nbsp;
nbsp; nbsp;response.setCharacterEncoding("UTF-8");nbsp;
nbsp; nbsp;response.setContentType("text/html; charset=UTF-8");nbsp;
%>
htnl>
head>
title>刪除人員/title>
/head>
body>
%
String id=request.getParameter("id"); //從表單獲得nbsp;
String name=request.getParameter("name"); //從表單獲得
trynbsp;
{nbsp;
/** 連接數(shù)據(jù)庫參數(shù) **/
String driverName = "com.mysql.jdbc.Driver"; //驅(qū)動名稱
String DBUser = "root"; //mysql用戶名
String DBPasswd = "hel610"; //mysql密碼
String DBName = "html_db"; //數(shù)據(jù)庫名
String connUrl = "jdbc:mysql://localhost/" + DBName + "?user=" + DBUser + "password=" + DBPasswd;
String query_sql = "select id,name,sex,age from person_tb";
String delete_sql = "";
Class.forName(driverName).newInstance();
Connection conn = DriverManager.getConnection(connUrl);
Statement stmt = conn.createStatement();
try{nbsp;
if(id != null id != ""){
out.println("刪除了id=" + id + "的人。/br>/br>");
delete_sql = "delete from person_tb where id=" + id;
}
else if(name != null name != ""){
out.println("刪除了name=" + name + "的人。/br>/br>");
delete_sql = "delete from person_tb where name='" + name + "'";
}else{
out.println("請至少輸入ID、姓名中的一個！/br>/br>");
}
}catch(Exception e){
e.printStackTrace();
} nbsp;nbsp;
try {nbsp;
stmt.execute(delete_sql);nbsp;
}catch(Exception e){
e.printStackTrace();
}
try {nbsp;
ResultSet rs = stmt.executeQuery(query_sql); nbsp;nbsp;
while(rs.next()) {
%>
ID：%=rs.getString("id")%>
/br> 姓名：%=rs.getString("name")%>
/br> 性別：%=rs.getString("sex")%>
/br> 年齡：%=rs.getString("age")%>
/br>
/br>
%
} nbsp; nbsp;
}catch(Exception e) {
e.printStackTrace();
}nbsp;
//rs.close();
stmt.close();
conn.close();nbsp;
}catch (Exception e) {
e.printStackTrace();
}nbsp;
%>
/br>
input name="" type="button" onclick="location.href = 'index_test.jsp'" value="返回" />
/body>
/html>
在瀏覽器直接訪問index_test.jsp頁面，點擊刪除按鈕，填入ID或者姓名之中的任何一個并提交即可進(jìn)行刪除：
執(zhí)行刪除前（下左圖）、后（下右圖）數(shù)據(jù)庫的內(nèi)容顯示為：
總的來說，查詢、插入與刪除的功能都實現(xiàn)了。
現(xiàn)在發(fā)現(xiàn)的問題是：本來是實現(xiàn)的是彈出層的位置是可以移動的，但現(xiàn)在移動不了了，具體原因在于鼠標(biāo)拖動部分的第一句代碼：var objDiv = document.getElementById("popDiv");即指定拖動對象時，沒有指定好。正在找方法解決。有誰有比較好的方法，請幫下忙吧，多謝了！
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