J2ME/J2EE实现用户登录交互 实现代码

import java.io.bytearrayoutputstream;
import java.io.dataoutputstream;
import java.io.ioexception;
import java.io.outputstream;
import javax.servlet.servletexception;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
/** *//*******************************************************************************
*
* @author zdw
*
*/
@suppresswarnings("serial")
public class loginservlet extends httpservlet
{
public void doget(httpservletrequest request, httpservletresponse response)
throws servletexception, ioexception
{
this.dopost(request, response);
}
public void dopost(httpservletrequest request, httpservletresponse response)
throws servletexception, ioexception
{
// 得到客户端传入的数据(用户名和密码)
string username = request.getparameter("username");
string password = request.getparameter("password");
// 构建输出流
bytearrayoutputstream baos = new bytearrayoutputstream();
dataoutputstream dos = new dataoutputstream(baos);
// 逻辑操作(这里写你的逻辑判断)
if ("zdw".equals(username) && "admin".equals(password))
{
// 响应数据
dos.writeutf("true");
} else
{
// 响应数据
dos.writeutf("false");
}
//
byte[] data = baos.tobytearray();
// 设置服务器响应参数
response.setstatus(httpservletresponse.sc_ok);
response.setcontentlength(data.length);
response.setcontenttype("application/octet-stream");
outputstream os = response.getoutputstream();
os.write(data);
os.close();
}
}