标签：from entity amp uid sql pos ram 返回值 response
--sql文件
create database student
go
use student
go
create table stuinfo
(
--stuid int primary key identity(1,1) not null,
stuname nvarchar(10) not null,
stupwd nvarchar(20) not null
)
insert into stuinfo values(‘admin‘,‘123‘)
select * from stuinfo
select stuname,stupwd from stuinfo where stuname=‘admin‘
create table stuinfo_email
(
--stuid int primary key identity(1,1) not null,
stuname nvarchar(10) not null,
stupwd nvarchar(20) not null,
stuemail nvarchar(20) not null
)
select * from stuinfo_email
insert into stuinfo_email values(‘1‘,‘123‘,‘1@sina.com‘)
----java 代码
package com.svse.ADO;
public class ADO {
private String stuname;
private String stupwd;
public String getStuname() {
return stuname;
}
public void setStuname(String stuname) {
this.stuname = stuname;
}
public String getStupwd() {
return stupwd;
}
public void setStupwd(String stupwd) {
this.stupwd = stupwd;
}
}
----注册
package com.svse.Applion;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//在次出继承
public class Regist extends HttpServlet{
public Connection conn;
public PreparedStatement pstm;
public ResultSet rs;
//连接数据库
public void getConn(){
String url="jdbc:sqlserver://localhost:1433;database=student";
String user="sa";
String pwd="svse";
String driverpath="com.microsoft.sqlserver.jdbc.SQLServerDriver";
try {
Class.forName(driverpath);
conn=DriverManager.getConnection(url,user,pwd);
if(conn!=null){
//System.out.println("ok");
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//得到post资源
public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
//网页出现乱码情况 将打印的字转换成正规字体
response.setContentType("text/html;charset=gbk");
PrintWriter out=response.getWriter();
String name=request.getParameter("registName");
String pwd=request.getParameter("registPwd");
String email=request.getParameter("registSina");
//System.out.println(name);
//System.out.println(pwd);
//System.out.println(email);
if(this.insert(name,pwd,email)== true){
out.println("注册成功！");
}else{
out.println("注册失败！");
}
out.flush();
out.close();
}
//注册 添加数据
public boolean insert(String name,String pwd,String email){
getConn();
boolean bol=false;
String sql="insert into stuinfo_email values(?,?,?) ";
try {
pstm=conn.prepareStatement(sql);
//System.out.println(name);
//System.out.println(pwd);
//System.out.println(email);
pstm.setString(1, name);
pstm.setString(2, pwd);
pstm.setString(3, email);
pstm.execute();
bol=true;
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}finally{
try {
if(rs!=null){
rs.close();
}
if(pstm!=null){
pstm.close();
}
if(conn!=null){
conn.close();
}
} catch (Exception e) {
// TODO: handle exception
}
}
return bol;
}
}
--登陆
package com.svse.Applion;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Connection;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Acpplion extends HttpServlet {
public Connection conn;
public PreparedStatement pstm;
public ResultSet rs;
//连接数据库
public void getConn(){
String url="jdbc:sqlserver://localhost:1433;database=student";
String user="sa";
String pwd="svse";
String driverpath="com.microsoft.sqlserver.jdbc.SQLServerDriver";
try {
Class.forName(driverpath);
conn=DriverManager.getConnection(url,user,pwd);
if(conn!=null){
//System.out.println("ok");
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//获取get资源
public void doPost(HttpServletRequest requst,HttpServletResponse response)throws ServletException,IOException{
response.setContentType("text/html;charset=gbk");
PrintWriter out=response.getWriter();
String name=requst.getParameter("loginName");
String pwd=requst.getParameter("loginPwd");
//等到数据库的值 看是否与其匹配
if(this.select(name,pwd)==true)
{
out.print("登陆成功！！！");
}else{
out.print("登录失败！！！");
}
out.flush();
out.close();
}
//查询
public boolean select(String name,String pwd){
getConn();
boolean bol=false;
String sql="select stuname,stupwd from stuinfo where stuname=? ";
try {
pstm=conn.prepareStatement(sql);
pstm.setString(1, name);
pstm.executeQuery();
bol=true;
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}finally{
try {
if(rs!=null){
rs.close();
}
if(pstm!=null){
pstm.close();
}
if(conn!=null){
conn.close();
}
} catch (Exception e) {
// TODO: handle exception
}
}
//返回值
return bol;
}
}
-----jsp 界面
<body>
<form action="login" method="post">
用户名：
<input type="text" id="loginName"/>
<br/>
密 码：
<input type="password" id="loginPwd"/>
<br/>
<input type="submit" value="登陆"/>
<a href="MyJsp.jsp" > 注册 </a>
</form>
</body>
-----注册界面
<body>
<form action="loginregister" method="post">
<p>
用户名：<input type="text" name="registName" />
<br />
</p>
<p>密 码：<input type="password" name="registPwd" />
<br />
</p>
<p>邮 箱：<input type="text" name="registSina"/>
<br />
</p>
<p>
<input type="submit" value="确定"/>
</p>
</form>
</body>
------web.xml
<servlet>
<servlet-name>login</servlet-name>
<servlet-class>com.svse.Applion.Acpplion</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>register</servlet-name>
<servlet-class>com.svse.Applion.Regist</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>register</servlet-name>
<url-pattern>/loginregister</url-pattern>
</servlet-mapping>
java web 简单的登录注册
标签：from entity amp uid sql pos ram 返回值 response
原文地址：http://www.cnblogs.com/yjqc/p/6106353.html
