javaWeb-连接mysql数据库增删改查.doc
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连接MYSQL数据库的简单增删改查
项目框架如图所示：
所需工具：
所需工具：
所需工具：
所需工具：
程序代码：package com.user.action;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.user.bean.UserBean;
import com.user.dao.UserDao;
public class InsertOrUpdateAction extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
private UserDao userDao ;
public void doGet(HttpServletRequest request, HttpServletResponse response
throws ServletException, IOException {
doPost(request, response;
}
public void doPost(HttpServletRequest request, HttpServletResponse response
throws ServletException, IOException {
request.setCharacterEncoding(utf-8;
response.setCharacterEncoding(utf-8;
userDao = new UserDao(;
String str = request.getRequestURI(;
str = str.substring(str.lastIndexOf(/+1;
String yx = request.getParameter(yx;
String zy = request.getParameter(zy;
String age = request.getParameter(age;
String dh = request.getParameter(dh;
String qq = request.getParameter(qq;
String sex = request.getParameter(sex;
UserBean userBean = new UserBean(;
userBean.setYx(yx;
userBean.setZy(zy;
if(!.equals(ageage!=null
{
userBean.setAge(Integer.valueOf(age;
}else{
userBean.setAge(0;
}
userBean.setDh(dh;
userBean.setQq(qq;
userBean.setSex(sex;
if(InsertUserAction.equals(str{
if(userDao.insertUser(userBean{
response.sendRedirect(SelectAllUser;
}else{
response.sendRedirect(SelectAllUser;
}
}else if(UpdateUserAction.equals(str{
String strId = request.getParameter(id;
if(!.equals(strIdstrId!=null{
userBean.setId(Integer.valueOf(strId;
}else{
userBean.setId(-1;
}
if(userDao.updateUser(userBean{
response.sendRedirect(SelectAllUser;
}else{
response.sendRedirect(SelectAllUser;
}
}
}
}
package com.user.action;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.serv
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