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java省市级联下拉菜单实例代码

程序员文章站 2024-03-12 11:25:50
本文实例为大家分享了java省市级联的具体代码，供大家参考，具体内容如下 1.loadareaservlet.java package com.scce.s...

本文实例为大家分享了java省市级联的具体代码，供大家参考，具体内容如下

1.loadareaservlet.java

package com.scce.servlet;
 
import java.io.ioexception;
import java.io.printwriter;
import java.util.arraylist;
 
import javax.servlet.servletexception;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
 
import net.sf.json.jsonarray;
 
import com.scce.pojo.city;
import com.scce.pojo.prov;
 
public class loadareaservlet extends httpservlet {
 
   
   
  private static final long serialversionuid = 1l;
 
  public void doget(httpservletrequest request, httpservletresponse response)
      throws servletexception, ioexception {
      this.dopost(request, response);
  }
 
   
  public void dopost(httpservletrequest request, httpservletresponse response)
      throws servletexception, ioexception {
    response.setcontenttype("text/html;charset=utf-8");
    request.setcharacterencoding("utf-8");
    printwriter out = response.getwriter();
    arraylist<prov> provs = new arraylist<prov>();
    string provinceid = request.getparameter("provinceid");
    if (provinceid=="" || provinceid==null) {
      system.out.println("加载地级市信息");
    prov pro1 = new prov();
    pro1.setid(0);
    pro1.setprovincename("湖北");
    prov pro2 = new prov();
    pro2.setid(1);
    pro2.setprovincename("湖南");
    prov pro3 = new prov();
    pro3.setid(2);
    pro3.setprovincename("广东");
    prov pro4 = new prov();
    pro4.setid(3);
    pro4.setprovincename("广西");
    provs.add(pro1);
    provs.add(pro2);
    provs.add(pro3);
    provs.add(pro4);
    system.out.println(jsonarray.fromobject(provs).tostring()); //[{"id":0,"provincename":"湖北"},{}]
    out.print(jsonarray.fromobject(provs).tostring());
    }else{
      arraylist<city> citys = new arraylist<city>();
      if (provinceid.equals("0")) {
        city city1 = new city();
        city1.setid(0);
        city1.setcityname("武汉市");
        city city2 = new city();
        city2.setid(1);
        city2.setcityname("黄石市");
        city city3 = new city();
        city3.setid(2);
        city3.setcityname("十堰市");
        citys.add(city1);
        citys.add(city2);
        citys.add(city3);
      }
      if (provinceid.equals("1")) {
        city city1 = new city();
        city1.setid(0);
        city1.setcityname("长沙市");
        city city2 = new city();
        city2.setid(1);
        city2.setcityname("岳阳市");
        city city3 = new city();
        city3.setid(2);
        city3.setcityname("湘潭市");
        citys.add(city1);
        citys.add(city2);
        citys.add(city3);
      }
      system.out.println(jsonarray.fromobject(citys).tostring());
      out.print(jsonarray.fromobject(citys).tostring());
    }  
  }
   
 
}

2.test1.html

<!doctype html>
<html>
 <head>
  <title>chapter4-test1</title>
   
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="this is my page">
  <meta http-equiv="content-type" content="text/html; charset=utf-8">
   
  
 
 <link rel="stylesheet" href="../ui/themes/icon.css" type="text/css"></link>
  
 <link rel="stylesheet" href="../ui/themes/default/easyui.css" type="text/css"></link>
  
 <!-- <script type="text/javascript" src="../js/jquery-1.8.2.min.js"></script> -->
 <script type="text/javascript" src="../ui/jquery.min.js"></script>
 <script type="text/javascript" src="../ui/jquery.easyui.min.js"></script>
  
 <script type="text/javascript" src="../ui/locale/easyui-lang-zh_cn.js"></script>
 <script type="text/javascript">
 //loadareaservlet
  /* var datacombobox=[{"id":1,"provincename":"湖北省"}, 
    {"id":2,"provincename":"湖南省","selected":true},
    {"id":3,"provincename":"河北省"},
    {"id":4,"provincename":"河南省"}
  ]; */
 $(function () {
       $("#province").combobox({
         width: 150,
         valuefield: 'id', //1
         textfield: 'provincename', // 湖北省              
         editable: false,
        // data:datacombobox //指定下拉列表的数据源
        url:'../loadareaservlet',
        method:'post',
        onloadsuccess:function(data){
           
          var provid = $("#province").combobox("getvalue");
           
          loadcity(provid);
        },
        onselect:function(recode){
          loadcity(recode.id);
        }
         
       });
     });
 
     function loadcity(provid){
       $("#city").combobox({
         width: 150,
         valuefield: 'id', //1
         textfield: 'cityname', // 湖北省              
         editable: false,
        // data:datacombobox //指定下拉列表的数据源
        url:'../loadareaservlet?provinceid='+provid,
        method:'post'
       });
     }
  
 </script>
 </head>
  
 <body> 
  省：
  <select id="province" >
     <option value="0">数据加载中..</option>
        
  </select>
  <br/>
   
  市：
  <select id="city" >
     <option value="">数据加载中..</option>
  </select>
  
  
 </body>
</html>

以上就是本文的全部内容，希望对大家学习java程序设计有所帮助。

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