向数据库插入数据

package com.action;



import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;



import javax.servlet.http.HttpServletResponse;



import net.sf.json.JSONArray;



import org.apache.struts2.ServletActionContext;



import com.dao.StudentDao;

import com.dao.imp.StudentDaoImp;

import com.entity.Sheng;

import com.entity.Student;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;



public class StudentAction extends ActionSupport{

	private StudentDao dao=new StudentDaoImp();

	public StudentDao getDao() {

		return dao;

	}

	public void setDao(StudentDao dao) {

		this.dao = dao;

	}

	

	private int id;

	private String name;

	private String password;

	private String sex;

	private String address;

	private String hobby;





	private int age;

	private int page=1;

	private String add1;

	private String add3;

	private Sheng Hebei;

	private Sheng Sd;

	

	

	private Student student=new Student();

	

	public int getId() {

		return id;

	}

	public void setId(int id) {

		this.id = id;

	}

	public String getName() {

		return name;

	}

	public void setName(String name) {

		this.name = name;

	}

	public String getPassword() {

		return password;

	}

	public void setPassword(String password) {

		this.password = password;

	}

	public String getEmail() {

		return email;

	}

	public void setEmail(String email) {

		this.email = email;

	}

	public String getSex() {

		return sex;

	}

	public void setSex(String sex) {

		this.sex = sex;

	}

	public int getAge() {

		return age;

	}

	public void setAge(int age) {

		this.age = age;

	}

	public int getPage() {

		return page;

	}

	public void setPage(int page) {

		this.page = page;

	}

	public String getAdd1() {

		return add1;

	}

	public void setAdd1(String add1) {

		this.add1 = add1;

	}

	public String getAdd3() {

		return add3;

	}

	public void setAdd3(String add3) {

		this.add3 = add3;

	}

	public Student getStudent() {

		return student;

	}

	public void setStudent(Student student) {

		this.student = student;

	}

	public void setSd(Sheng sd) {

		Sd = sd;

	}

	public String getAddress() {

		return address;

	}

	public void setAddress(String address) {

		this.address = address;

	}

	

	



public String getHobby() {

		return hobby;

	}

	public void setHobby(String hobby) {

		this.hobby = hobby;

	}

public Sheng getHebei() {

		Hebei=new Sheng();

		Hebei.setName("河北省");

		String c1="沧州";

		String c2="保定";

		String c3="廊坊";

		String c4="衡水";

		List<String> citys=new ArrayList<String>();

		citys.add(c1);

		citys.add(c2);

		citys.add(c3);

		citys.add(c4);

		Hebei.setCitys(citys);

		return Hebei;

	}



	public void setHebei(Sheng hebei) {

		Hebei = hebei;

	}



	public Sheng getSd() {

		Sheng sd=new Sheng();

		sd.setName("山东省");

		String c1="烟台";

		String c2="青岛";

		String c3="蓬莱";

		String c4="威海";

		List<String> citys=new ArrayList<String>();

		citys.add(c1);

		citys.add(c2);

		citys.add(c3);

		citys.add(c4);

		sd.setCitys(citys);

		

			Sd=sd;

			return Sd;

	}







	

	public void studentAddr()

	{

		HttpServletResponse response=ServletActionContext.getResponse();

		response.setCharacterEncoding("utf-8");

		if("河北省".equals(add1))

		{

			this.getHebei();

			List<String> c1=Hebei.getCitys();

			String str=JSONArray.fromObject(c1).toString();

			try {

				response.getWriter().print(str);

			} catch (IOException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			}

		}

		else{

			getSd();

			List<String> city=Sd.getCitys();

			String str=JSONArray.fromObject(city).toString();

			try {

				response.getWriter().print(str);

			} catch (IOException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			}

			

		}

		

		

	}

	

	public String saveStudent(){

		

		student.setId(id);

		student.setAge(age);

		student.setName(name);

		student.setHobby(hobby);

		student.setPassword(password);

		student.setSex(sex);

		student.setAddress(address);

		dao.saveStudent(student);

		return "saveStudent";

	}

	

	

	



	

}

StudentAction.java

 

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@taglib prefix="s" uri="/struts-tags"%>

<!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=UTF-8">

<title>学生添加</title>

<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-2.0.3.min.js"></script>

<script type="text/javascript" src="${pageContext.request.contextPath}/js/datepicker/WdatePicker.js"></script>

<script type="text/javascript">

$(function(){

	var sheng=$("#addr1 option:selected").html();

	$.ajax({

		type:"post", 

		url:"${pageContext.request.contextPath}/student/student_studentAddr",

		data:"add1="+sheng,

		dataType:"json",

		success:function(city){

			for(var i=0;i<city.length;i++){

				$("#addr2").append('<option class="r">'+city[i]+'</option>');

			}



			    var sh=$("#addr1 option:selected").html();

				var shi=$("#addr2 option:selected").html();

				

				var htmlstr=sh+''+shi;

				alert(htmlstr);

				$("#addr3").val(htmlstr);

			}

	});

	$("#addr1").change(function(){

		var sheng=$("#addr1 option:selected").html();

		alert(sheng);

		$("option").remove(".r");

		/* 移除标签文件 */

		$("#addr3").val('');

		$.ajax({

			type:"post",

			url:"${pageContext.request.contextPath}/student/student_studentAddr",

			data:"add1="+sheng,

			dataType:"json",

			success:function(city){

				for(var i=0;i<city.length;i++){

					$("#addr2").append('<option class="r">'+city[i]+'</option>');

				}

					var sh=$("#addr1 option:selected").html();

					var shi=$("#addr2 option:selected").html();

					var htmlstr=sh+''+shi;

					$("#addr3").val(htmlstr);

				}

		});

	});

	$("#addr2").change(function(){

		$("#addr3").val('');

		var sh=$("#addr1 option:selected").html();

		var si=$("#addr2 option:selected").html();

		var htmlstr=sh+''+si;

		$("#addr3").val(htmlstr);

	});

	

})

</script>

</head>

<body>

<h1>学生添加</h1>

<s:form action="student/student_saveStudent" method="post" theme="simple"><br>

姓名:<s:textfield name="name" label="姓名" required="true"></s:textfield><br>

密码：<s:password label="密码" name="password" required="true"></s:password><br>

年龄：<s:textfield name="age" label="年龄" required="true"></s:textfield><br>

性别：<s:radio label="性别" name="sex" list="#{'1':'男','2':'女'}"></s:radio><br>

出生年月：<s:textfield name="dte" label="出生年月" onfocus="WdatePicker({dateFmt : 'yyyy-MM-dd HH:mm:ss'})" class="Wdate"></s:textfield><br>

爱好：<s:checkboxlist label="爱好" name="hobby" list="#{'1':'basketball','2':'football','3':'music','4':'art'}"></s:checkboxlist><br>

省份：<s:select id="addr1" label="省份 " name="province" list="{'河北省','山东省'}"></s:select>

城市：<select id="addr2"  name="city"></select><br>

地址：<s:textfield label="location" name="address" id="addr3"></s:textfield>

<s:submit value="提交"></s:submit>

</s:form>

</body>

</html>

 在java   action文件中声明对应的属性    只要属性名与前台的属性名称对应    就可以得到前台的值 

再声明一个student对象  然后一个一个将获取到的值set进去