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