如果需要进行移动端web页面开发，那涵盖的前端的知识点很多，最基础的如HTML5/CSS3/Javascript，而在这之上有很多框架是为移动端web页面开发提供便捷开发方式的，如支持响应式布局的bootstrap，如移动端交互的zepto，多了解下这些才能完成页面开发；
以省，市，城联动为例：此小程序的功能主要是采用异步请求方式从数据库中调取省市区信息显示到下拉列表：
代码如下：
建立数据库中的代码和一些配置文件信息就省略了，主要有JavaScript中的代码为：
$(document).ready(function(){
$.get("getProvince.do", function(result){
$("#showp").html(result)
})
})
var xmlhttp
function mysend(str){
$(document).ready(function(){
$("#show2").html("")
})
var show = document.getElementByIdx_x_x_x_x_x_x_x_x_x("show")
show.innerHTML = ""
var province = document.getElementByIdx_x_x_x_x_x_x_x_x_x("province").value
if(province!=0){
if(window.XMLHttpRequest){
xmlhttp = new XMLHttpRequest()
}else{
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP")
}
xmlhttp.onreadystatechange=function(){
if(xmlhttp.readyState==4 &&xmlhttp.status==200){
show.innerHTML = xmlhttp.responseText
}
}
var ss = encodeURIComponent(str)
xmlhttp.open("GET","getCity.do?provinceid="+ss,true)
xmlhttp.send(null)
}
}
function myarea(str){
if(window.XMLHttpRequest){
xmlhttp = new XMLHttpRequest()
}else{
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP")
}
xmlhttp.onreadystatechange=function(){
if(xmlhttp.readyState==4 &&xmlhttp.status==200){
var show2 = document.getElementByIdx_x_x_x_x_x_x_x_x_x("show2")
show2.innerHTML = xmlhttp.responseText
}
}
var ss = encodeURIComponent(str)
xmlhttp.open("GET","getArea.do?cityid="+ss,true)
xmlhttp.send(null)
}
html页面中的代码为：
所在地
action中的代码为：
package mobi.zhangsheng.jiejia.action
import java.io.IOException
import java.io.PrintWriter
import java.util.List
import javax.annotation.Resource
import javax.servlet.http.HttpServletRequest
import javax.servlet.http.HttpServletResponse
import org.apache.struts2.ServletActionContext
import org.springframework.stereotype.Controller
import mobi.zhangsheng.jiejia.domain.Areas
import mobi.zhangsheng.jiejia.service.AgentsService
import mobi.zhangsheng.jiejia.service.AreasService
@Controller
public class ProvinceAction {
private int provinceid
private int cityid
@Resource
private AreasService as
@Resource
private AgentsService ags
public int getProvinceid() {
return provinceid
}
public void setProvinceid(int provinceid) {
this.provinceid = provinceid
}
public int getCityid() {
return cityid
}
public void setCityid(int cityid) {
this.cityid = cityid
}
public void getProvince(){
List provinceList = as.getAreasPrvinceList()
HttpServletResponse resp= ServletActionContext.getResponse()
HttpServletRequest request = ServletActionContext.getRequest()
//resp.setContentType("xml")
resp.setContentType("text/html")
resp.setCharacterEncoding("utf-8")
try {
PrintWriter out = resp.getWriter()
out.print("")
//out.print("shanghai")
} catch (IOException e) {
e.printStackTrace()
}
}
public void getCity(){
List cityList = as.getAreasCityList(provinceid)
HttpServletResponse resp= ServletActionContext.getResponse()
//resp.setContentType("xml")
resp.setContentType("text/html")
resp.setCharacterEncoding("utf-8")
try {
PrintWriter out = resp.getWriter()
out.print("")
//out.print("shanghai")
} catch (IOException e) {
e.printStackTrace()
}
}
public void getArea(){
List areaList = as.getAreasCityList(cityid)
if(areaList.size()==0){
}else{
HttpServletResponse resp= ServletActionContext.getResponse()
resp.setContentType("text/html")
resp.setCharacterEncoding("utf-8")
try {
PrintWriter out = resp.getWriter()
out.print("")
} catch (IOException e) {
e.printStackTrace()
}
}
}
}
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