[WeChat applet series] A complete example of a simple applet connecting to a backend database (with source code for free download) (Servlet)
log in page
login.wxml
<view class="page">
<loading hidden="{
{loadingHidden}}" bindchange="loadingChange" bindtap="tapLoading">
加载中...
</loading>
<modal no-cancel="true" hidden="{
{modalHidden}}" bindconfirm="modalConfirm" bindcancel="modalCancel">
{
{modalContent}}
</modal>
<view class="page__hd">
</view>
<view class="page__bd">
<form bindsubmit="formSubmit" bindreset="formReset">
<view class="section">
<view class="section__title">编号</view>
<input type="number" bindinput="inputChange" id="username" placeholder="请输入编号"/>
</view>
<view class="section">
<view class="section__title">密码</view>
<input type="number" bindinput="inputChange" id="password" placeholder="请输入密码"/>
</view>
<view class="btn-area">
<view class="button-wrapper">
<button type="primary" formType="submit" class="primary">查询</button>
</view>
<view class="button-wrapper">
<button type="default" formType="reset">重置</button>
</view>
</view>
</form>
</view>
</view>
login.js
// pages/login/login.js
var inputs = {
};
Page({
/**
* 页面的初始数据
*/
data: {
loadingHidden: true,
modalHidden: true,
modalContent: '',
inputs: {
}
},
//input事件
inputChange: function (e) {
inputs[e.currentTarget.id] = e.detail.value
},
//loading组件的绑定事件
tapLoading: function () {
this.setData({
loadingHidden: true
})
},
loading: function () {
this.setData({
loadingHidden: false
})
},
//重置按钮
formReset: function () {
inputs = {
}
wx.setStorageSync('username', '')
wx.setStorageSync('password', '')
},
//提交按钮
formSubmit: function () {
var page = this
if (inputs['username'] == null || inputs['username'] == '') {
page.showModal('请输入编号')
return
}
if (inputs['password'] == null || inputs['password'] == '') {
page.showModal('请输入密码')
return
}
page.loading()
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/LoginServlet',
method: 'GET', //请求方式
header: {
"content-type":"application/x-www-form-urlencoded"
},
data: {
teano:inputs['username'],
teapwd:inputs['password']
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
if(res.data == "登录成功") {
wx.hideNavigationBarLoading()
wx.navigateTo({
// 必须要序列化成字符串，URL编码自动完成
url: '/pages/index2/index2?data=' + JSON.stringify(res.data) + '&username=' + inputs['username']
})
} else {
that.setData({
loadingHidden: true
})
wx.showToast({
title: '登录失败',
icon: 'none',
duration: 1500,
})
}
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
/**
* 生命周期函数--监听页面加载
*/
onLoad(options) {
},
//提交按钮提示
showModal: function (msg) {
this.setData({
modalHidden: false,
modalContent: msg
})
},
modalCancel: function () {
this.setData({
modalHidden: true
})
},
modalConfirm: function () {
this.setData({
modalHidden: true
})
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function () {
// 调用应用实例的方法获取全局数据
var that = this
inputs['username'] = wx.getStorageSync('username')
inputs['password'] = wx.getStorageSync('password') // 这里没有加密安全性较低
this.setData({
inputs: inputs
})
},
})
login.wxss
/**index.wxss**/
.userinfo {
display: flex;
flex-direction: column;
align-items: center;
}
.userinfo-avatar {
width: 128rpx;
height: 128rpx;
margin: 20rpx;
border-radius: 50%;
}
.userinfo-nickname {
color: #aaa;
}
.usermotto {
margin-top: 200px;
}
app.wxss
page {
background-color: #fbf9fe;
height: 100%;
}
.container {
display: flex;
flex-direction: column;
min-height: 100%;
justify-content: space-between;
}
.page-header {
display: flex;
font-size: 32rpx;
color: #aaa;
margin-top: 50rpx;
flex-direction: column;
align-items: center;
}
.page-header-text {
padding: 20rpx 40rpx;
}
.page-header-line {
width: 150rpx;
height: 1px;
border-bottom: 1px solid #ccc;
}
.page-body {
width: 100%;
display: flex;
flex-direction: column;
align-items: center;
flex-grow: 1;
overflow-x: hidden;
}
.page-body-wrapper {
margin-top: 100rpx;
display: flex;
flex-direction: column;
align-items: center;
width: 100%;
}
.page-body-wrapper form {
width: 100%;
}
.page-body-wording {
text-align: center;
padding: 200rpx 100rpx;
}
.page-body-info {
display: flex;
flex-direction: column;
align-items: center;
background-color: #fff;
margin-bottom: 50rpx;
width: 100%;
padding: 50rpx 0 150rpx 0;
}
.page-body-title {
margin-bottom: 100rpx;
font-size: 32rpx;
}
.page-body-text {
font-size: 30rpx;
line-height: 26px;
color: #ccc;
}
.page-body-text-small {
font-size: 24rpx;
color: #000;
margin-bottom: 100rpx;
}
.page-body-form {
width: 100%;
background-color: #fff;
display: flex;
flex-direction: column;
width: 100%;
border: 1px solid #eee;
}
.page-body-form-item {
display: flex;
align-items: center;
margin-left: 30rpx;
border-bottom: 1px solid #eee;
height: 88rpx;
font-size: 34rpx;
}
.page-body-form-key {
width: 180rpx;
color: #000;
}
.page-body-form-value {
flex-grow: 1;
}
.page-body-form-value .input-placeholder {
color: #b2b2b2;
}
.page-body-form-picker {
display: flex;
justify-content: space-between;
height: 100rpx;
align-items: center;
font-size: 36rpx;
margin-left: 20rpx;
padding-right: 20rpx;
border-bottom: 1px solid #eee;
}
.page-body-form-picker-value {
color: #ccc;
}
.page-body-buttons {
width: 100%;
}
.page-body-button {
margin: 25rpx;
}
.page-body-button image {
width: 150rpx;
height: 150rpx;
}
.green{
color: #09BB07;
}
.red{
color: #F76260;
}
.blue{
color: #10AEFF;
}
.yellow{
color: #FFBE00;
}
.gray{
color: #C9C9C9;
}
.strong{
font-weight: bold;
}
.bc_green{
background-color: #09BB07;
}
.bc_red{
background-color: #F76260;
}
.bc_blue{
background-color: #10AEFF;
}
.bc_yellow{
background-color: #FFBE00;
}
.bc_gray{
background-color: #C9C9C9;
}
.tc{
text-align: center;
}
.page input,checkbox{
padding: 20rpx 30rpx;
background-color: #fff;
}
checkbox, radio{
margin-right: 10px;
}
.btn-area{
padding: 0 30px;
}
.btn-area button{
margin-top: 20rpx;
margin-bottom: 20rpx;
}
.page {
min-height: 100%;
flex: 1;
background-color: #FBF9FE;
font-size: 32rpx;
font-family: -apple-system-font,Helvetica Neue,Helvetica,sans-serif;
overflow: hidden;
}
.page__hd{
padding: 50rpx 50rpx 50rpx 50rpx;
text-align: center;
}
.page__title{
display: inline-block;
padding: 20rpx 40rpx;
font-size: 32rpx;
color: #AAAAAA;
border-bottom: 1px solid #CCCCCC;
}
.page__info{
display: inline-block;
font-size: 38rpx;
color: #AAAAAA;
}
.page__desc{
display: none;
margin-top: 20rpx;
font-size: 26rpx;
color: #BBBBBB;
}
.section{
margin-bottom: 80rpx;
}
.section_gap{
padding: 0 30rpx;
}
.section__title{
margin-bottom: 16rpx;
padding-left: 30rpx;
padding-right: 30rpx;
}
.section_gap .section__title{
padding-left: 0;
padding-right: 0;
}
.shading{
background-color: #eee;
background-image: -moz-linear-gradient(45deg,#fff 25%, transparent 25%, transparent 50%,#fff 50%,#fff 75%, transparent 75%, transparent);
background-image:-webkit-gradient(linear,0 100%,100% 0,color-stop(25%,rgba(255,255,255,0.2)),color-stop(25%,transparent),color-stop(50%,transparent),color-stop(50%,rgba(255,255,255,0.2)),color-stop(75%,rgba(255,255,255,0.2)),color-stop(75%,transparent));
background-size: 16px 16px;
}
home page
index2.wxml
<!--pages/index2/index2.wxml-->
<view>
<text>------获取数据（单条）------\n编号：</text>
<input type="number" bindinput="teanoput" placeholder="请输入编号"/>
<text>\n------获取数据（多条）------\n是否党员：</text>
<radio-group bindchange="cppchange" class="oneline">
<radio value="true">是</radio><text decode="true"> </text>
<radio value="false">否</radio>
</radio-group>
</view>
<button bindtap="oneInfo">获取数据（单条）</button><text>\n</text>
<button bindtap="someInfo">获取数据（多条）</button><text>\n</text>
<button bindtap="addInfo">添加数据</button><text>\n</text>
<button bindtap="modInfo">修改数据</button><text>\n</text>
<button bindtap="delInfo">删除数据</button><text>\n</text>
<button bindtap="selectAll">刷新数据</button>
<view wx:for="{
{list}}">
<view>
<text>
编号:----------{
{list[index].teano}}------------\n
姓名：{
{list[index].teaname}}\n
密码：{
{list[index].teapwd}}\n
</text>
<view>图片：<image src="{
{list[index].photo}}"/></view>
<text>
性别: {
{list[index].teasex}}\n
职称: {
{list[index].title}}\n
出生日期：{
{list[index].birthday}}\n
是否党员：{
{list[index].cpp}}\n
薪水：{
{list[index].salary}}
</text>
</view>
</view>
index2.js
// pages/index2/index2.js
Page({
/**
* 页面的初始数据
*/
data: {
//用于获取的编号
no: "",
//用于添加信息字段
teano: "",
teapwd: "",
teaname: "",
teasex: "",
title: "",
photo: "",
birthday: "",
cpp: "",
salary: "",
//数据显示
list:[],
},
//输入框事件
teanoput:function(e) {
this.setData({
no:e.detail.value
})
console.log(e.detail.value);
},
cppchange:function(e) {
this.setData({
cpp:e.detail.value
})
console.log(e.detail.value);
},
//获取数据（单条）
oneInfo:function() {
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/TeacherFindServlet',
method: 'GET', //请求方式
data: {
no: this.data.no
},
header: {
"content-type":"application/x-www-form-urlencoded"
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
//获取数据（多条）
someInfo:function() {
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/TeacherSomeServlet',
method: 'GET', //请求方式
data: {
cpp:this.data.cpp
},
header: {
"content-type":"application/x-www-form-urlencoded"
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
//添加数据
addInfo:function () {
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/TeacherAddServlet',
method: 'GET', //请求方式
data: {
teano:'333',
teapwd:'333',
teaname:'张三',
teasex:'男',
title:'教授',
photo:"http://tva3.sinaimg.cn/large/006oOWahly1fprcrxotpkj306o06ojr9.jpg",
birthday:'1990-3-4',
cpp:'true',
salary:'3000.88'
},
header: {
"content-type":"application/x-www-form-urlencoded"
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
//修改数据
modInfo:function() {
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/TeacherModServlet',
method: 'GET', //请求方式
data: {
teano:'333',
teaname:'李四',
teasex:'女',
title:'副教授',
},
header: {
"content-type":"application/x-www-form-urlencoded"
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
//删除数据
delInfo: function() {
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/TeacherDelServlet',
method: 'GET', //请求方式
data: {
no:"333"
},
header: {
"content-type":"application/x-www-form-urlencoded"
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
//刷新数据
selectAll: function () {
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/TeacherAllServlet',
method: 'GET', //请求方式
header: {
"content-type":"application/x-www-form-urlencoded"
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
/**
* 生命周期函数--监听页面加载
*/
onLoad(options) {
var that = this;
wx.request({
url: 'http://localhost:8080/web_servlet/TeacherAllServlet',
method: 'GET', //请求方式
header: {
"content-type":"application/x-www-form-urlencoded"
},
success: function(res) {
// ,JSON.stringify(res.data)
console.log("获取到的用户信息成功: " + res.data);
that.setData({
list : res.data,
})
},
fail: function() {
app.consoleLog("请求数据失败");
},
})
},
})
index2.wxss
/* pages/index2/index2.wxss */
image {
width: 150px;
height: 150px;
}
input {
display: inline-table;
}
.oneline {
display: inline-table;
}
rear end
Too lazy to stick, complete example resource address: (55 messages) Wechat applet uses Servlet to connect to database source code.zip-Java Document Class Resources-CSDN Library
Dao layer code
TeacherDao.interface
package com.r.dao;
import java.util.List;
import com.r.pojo.Teacher;
/**
* 学生dao接口
* @author
*
*/
public interface TeacherDao {
//获取全部信息
public List<Teacher> getAll();
//按条件查询（单条）
public List<Teacher> findInfo(String no);
//按条件查询（多条）
public List<Teacher> someInfo(boolean cpp);
//添加信息
public int addInfo(Teacher teacher);
//修改信息
public int modInfo(Teacher teacher);
//删除信息
public int delInfo(String no);
//登录
public Teacher selectByTeacher(String teano, String teapwd);
}
TeacherDaoImpl.java
package com.r.dao.impl;
import java.util.ArrayList;
import java.util.List;
import com.r.dao.BaseDao;
import com.r.dao.BaseDao1;
import com.r.dao.TeacherDao;
import com.r.pojo.Teacher;
/**
* 教师dao实现类
* @author
*
*/
public class TeacherDaoImpl extends BaseDao1 implements TeacherDao {
List<Teacher> teachers = new ArrayList<>();
/**
* 获取全部信息
*/
@Override
public List<Teacher> getAll() {
try {
if (getConnection()) {
String sql = "select * from t_teacher";
rs = executeSQL(sql, null);
while(rs.next()) {
Teacher tea = new Teacher();
tea.setTeano(rs.getString("teaNo"));
tea.setTeapwd(rs.getString("teaPwd"));
tea.setTeaname(rs.getString("teaName"));
tea.setTeasex(rs.getString("teaSex"));
tea.setTitle(rs.getString("title"));
tea.setPhoto(rs.getString("photo"));
tea.setBirthday(rs.getString("birthday"));
tea.setCpp(rs.getBoolean("cpp"));
tea.setSalary(rs.getFloat("salary"));
teachers.add(tea);
}
return teachers;
}
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
closeResources();
}
return null;
}
@Override
public List<Teacher> findInfo(String no) {
try {
if (getConnection()) {
String sql = "select * from t_teacher where teano=?";
rs = executeSQL(sql, new Object[] {
no});
while(rs.next()) {
Teacher tea = new Teacher();
tea.setTeano(rs.getString("teaNo"));
tea.setTeapwd(rs.getString("teaPwd"));
tea.setTeaname(rs.getString("teaName"));
tea.setTeasex(rs.getString("teaSex"));
tea.setTitle(rs.getString("title"));
tea.setPhoto(rs.getString("photo"));
tea.setBirthday(rs.getString("birthday"));
tea.setCpp(rs.getBoolean("cpp"));
tea.setSalary(rs.getFloat("salary"));
teachers.add(tea);
}
return teachers;
}
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
closeResources();
}
return null;
}
@Override
public List<Teacher> someInfo(boolean cpp) {
try {
if (getConnection()) {
String sql = "select * from t_teacher where cpp=?";
rs = executeSQL(sql, new Object[] {
cpp});
while(rs.next()) {
Teacher tea = new Teacher();
tea.setTeano(rs.getString("teaNo"));
tea.setTeapwd(rs.getString("teaPwd"));
tea.setTeaname(rs.getString("teaName"));
tea.setTeasex(rs.getString("teaSex"));
tea.setTitle(rs.getString("title"));
tea.setPhoto(rs.getString("photo"));
tea.setBirthday(rs.getString("birthday"));
tea.setCpp(rs.getBoolean("cpp"));
tea.setSalary(rs.getFloat("salary"));
teachers.add(tea);
}
return teachers;
}
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
closeResources();
}
return null;
}
@Override
public int addInfo(Teacher teacher) {
try {
if (getConnection()) {
String sql = "insert into t_teacher (teano,teapwd,teaname,teasex,title,photo,birthday,cpp,salary) values (?,?,?,?,?,?,?,?,?)";
int n = executUpdate(sql, new Object[] {
teacher.getTeano(),teacher.getTeapwd(),teacher.getTeaname(),teacher.getTeasex(),teacher.getTitle(),teacher.getPhoto(),teacher.getBirthday(),teacher.isCpp(),teacher.getSalary()});
return n;
}
} catch (Exception e) {
e.printStackTrace();
return 0;
} finally {
closeResources();
}
return 0;
}
@Override
public int modInfo(Teacher teacher) {
try {
if (getConnection()) {
String sql = "update t_teacher set teaname=?,teasex=?,title=? where teano=?";
int n = executUpdate(sql, new Object[] {
teacher.getTeaname(),teacher.getTeasex(),teacher.getTitle(),teacher.getTeano()});
return n;
}
} catch (Exception e) {
e.printStackTrace();
return 0;
} finally {
closeResources();
}
return 0;
}
@Override
public int delInfo(String no) {
try {
if (getConnection()) {
String sql = " delete from t_teacher where teano=?";
int n = executUpdate(sql, new Object[] {
no});
return n;
}
} catch (Exception e) {
e.printStackTrace();
return 0;
} finally {
closeResources();
}
return 0;
}
@Override
public Teacher selectByTeacher(String teano, String teapwd) {
try {
if (getConnection()) {
String sql = "select * from t_teacher where teano=? and teapwd=?";
rs = executeSQL(sql, new Object[] {
teano,teapwd});
Teacher teacher = null;
while (rs.next()) {
teacher = new Teacher();
teacher.setTeano(rs.getString("teaNo"));
teacher.setTeapwd(rs.getString("teaPwd"));
if (teacher.getTeano().equals(teano) && teacher.getTeapwd().equals(teapwd)) {
return teacher;
}
}
return null;
}
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
closeResources();
}
return null;
}
}
Serlvet code (partial)
LoginServlet.java
package com.r.servlet;
import java.io.IOException;
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 com.r.dao.TeacherDao;
import com.r.dao.impl.TeacherDaoImpl;
import com.r.pojo.Teacher;
/**
* Servlet implementation class LoginServlet
*/
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//设置网页字符编码集
response.setContentType("text/html;charset=utf-8");
//设置接收参数
String teano = request.getParameter("teano");
String teapwd = request.getParameter("teapwd");
TeacherDao td = new TeacherDaoImpl();
Teacher teacher = new Teacher();
teacher = td.selectByTeacher(teano, teapwd);
if(teacher != null){
response.getWriter().append("登录成功");
} else {
response.getWriter().append("登录失败");
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
TeacherAllServlet.java
package com.r.servlet;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
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 com.alibaba.fastjson.JSON;
import com.r.dao.TeacherDao;
import com.r.dao.impl.TeacherDaoImpl;
import com.r.pojo.Teacher;
/**
* Servlet implementation class TeacherServlet
*/
@WebServlet("/TeacherAllServlet")
public class TeacherAllServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public TeacherAllServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//设置网页字符编码集
response.setContentType("text/html;charset=utf-8");
TeacherDao td = new TeacherDaoImpl();
//查询所有学生信息
List<Teacher> teacherlist = new ArrayList<>();
teacherlist = td.getAll();
//System.out.println("---------------------------------------------------------------"+ Arrays.toString(teacherlist.toArray()));
String json = JSON.toJSONString(teacherlist);
System.out.println(json);
response.getWriter().append(json);
// return teacherlist;
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
TeacherDelServlet.java
package com.r.servlet;
import java.io.IOException;
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 com.r.dao.TeacherDao;
import com.r.dao.impl.TeacherDaoImpl;
import com.r.pojo.Teacher;
/**
* Servlet implementation class TeacherDelServlet
*/
@WebServlet("/TeacherDelServlet")
public class TeacherDelServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public TeacherDelServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//设置网页字符编码集
response.setContentType("text/html;charset=utf-8");
//设置接收参数
String no = request.getParameter("no");
TeacherDao td = new TeacherDaoImpl();
int n = 0;
n = td.delInfo(no);
if(n>0){
response.getWriter().append("删除成功");
} else {
response.getWriter().append("删除失败");
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}