jsp实现简单的学生管理信息系统的类

<span style="font-size:18px;">package one.java.Connection;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class GetConnection {
static Connection cc=null;
static String  url="jdbc:mysql:///jkxy?useUnicode=true&characterEncoding=utf-8";
static String  name="root";
static String  password="123456";
public  static Connection getconnection(){
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
try {
cc= DriverManager.getConnection(url,name,password);
return cc;
} catch (SQLException e) {
e.printStackTrace();
return null;
}
}

}</span>

<span style="font-size:18px;">package one.java.dom;

public class Admin {
private  String username=null;
private  String password=null;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
</span>

<span style="font-size:18px;">package one.java.dom;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import one.java.Connection.GetConnection;
import one.java.dom.*;
public class UserService {
private static Connection conn;
private PreparedStatement pstmt;
public  UserService(){
conn = GetConnection.getconnection();

}
public  boolean loginAdmin(Admin admin)
{

try {
pstmt=conn.prepareStatement("select * from tb_admin where username=? and password=?");
pstmt.setString(1,admin.getUsername());
pstmt.setString(2,admin.getPassword());
ResultSet rs=pstmt.executeQuery();
if(rs.next())
return true;
else
return false;
} catch (SQLException e) {
e.printStackTrace();
return false;
}

}
}</span>

<span style="font-size:18px;">package student.java.info;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import one.java.Connection.GetConnection;

public class StudentService {
private Connection conn;
private PreparedStatement pstmt;

public StudentService(){
conn = GetConnection.getconnection();
}

public boolean addStu(StuInfo stu) {
try {
pstmt = conn.prepareStatement("insert into tb_student"
+ "(nicheng,truename,sex,birthday,zy,kc,xq,br) "
+ "values(?,?,?,?,?,?,?,?)");
pstmt.setString(1, stu.getNicheng());
pstmt.setString(2, stu.getTruename());
pstmt.setByte(3, stu.getXb());
pstmt.setString(4, stu.getCsrq());
pstmt.setString(5, stu.getZy());
pstmt.setString(6, stu.getKcs());
pstmt.setString(7, stu.getXqs());
pstmt.setString(8, stu.getBz());

pstmt.executeUpdate();
return true;
} catch (SQLException e) {
// TODO Auto-generated catch block

e.printStackTrace();
return false;
}

}

public List<StuInfo> queryAllStu() {
List<StuInfo> stus = new ArrayList<StuInfo>();
try {
pstmt = conn.prepareStatement("select * from tb_student");
ResultSet rs = pstmt.executeQuery();
while (rs.next()) {
StuInfo stu = new StuInfo();
stu.setId(rs.getInt(1));
stu.setNicheng(rs.getString(2));
stu.setTruename(rs.getString(3));
stu.setXb(rs.getByte(4));
if (rs.getDate(5) != null)
stu.setCsrq(rs.getDate(5).toString());
stu.setZy(rs.getString(6));
if (rs.getString(7) != null)
stu.setKc(rs.getString(7).split("&"));
if (rs.getString(8) != null)
stu.setXq(rs.getString(8).split("&"));
stu.setBz(rs.getString(9));
stus.add(stu);

}
return stus;

} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}

}

public StuInfo queryStubyID(int id) {
// List stus = new ArrayList();
try {
pstmt = conn
.prepareStatement("select * from tb_student where id=?");
pstmt.setInt(1, id);
ResultSet rs = pstmt.executeQuery();
if (rs.next()) {
StuInfo stu = new StuInfo();
stu.setId(rs.getInt(1));
stu.setNicheng(rs.getString(2));
stu.setTruename(rs.getString(3));
stu.setXb(rs.getByte(4));
if (rs.getDate(5) != null)
stu.setCsrq(rs.getDate(5).toString());
stu.setZy(rs.getString(6));
if (rs.getString(7) != null)
stu.setKc(rs.getString(7).split("&"));
if (rs.getString(8) != null)
stu.setXq(rs.getString(8).split("&"));
stu.setBz(rs.getString(9));
// stus.add(stu);
return stu;

}
return null;

} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}

}

public boolean updateStu(StuInfo stu) {

try {
pstmt = conn
.prepareStatement("update  tb_student set nicheng=? , truename=? , sex=? ,birthday=? ,"
+ " zy=? ,kc=? , xq=?, br=?   where id=?");
pstmt.setString(1, stu.getNicheng());
pstmt.setString(2, stu.getTruename());
pstmt.setByte(3, stu.getXb());
pstmt.setString(4, stu.getCsrq());
pstmt.setString(5, stu.getZy());
pstmt.setString(6, stu.getKcs());
pstmt.setString(7, stu.getXqs());
pstmt.setString(8, stu.getBz());
pstmt.setInt(9, stu.getId());
pstmt.executeUpdate();
return true;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
}

public Boolean deleteStu(int id) {

try {
pstmt = conn.prepareStatement("delete from  tb_student where id=?");
pstmt.setInt(1, id);
pstmt.executeUpdate();
return true;
} catch (Exception e) {
e.getStackTrace();
return false;
}

}
}
</span>

<span style="font-size:18px;">package student.java.info;
public class StuInfo {
private int id;
private String nicheng;
private String truename;
private byte xb;
private String csrq;
private String zy;
private String[] kc = { "" };
private String kcs = "";
private String[] xq = { "" };
private String xqs = "";
private String bz;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getNicheng() {
return nicheng;
}
public void setNicheng(String nicheng) {
this.nicheng = nicheng;
}
public String getTruename() {
return truename;
}
public void setTruename(String truename) {
this.truename = truename;
}
public byte getXb() {
return xb;
}
public void setXb(byte xb) {
this.xb = xb;
}
public String getCsrq() {
return csrq;
}
public void setCsrq(String csrq) {
this.csrq = csrq;
}
public String getZy() {
return zy;
}
public void setZy(String zy) {
this.zy = zy;
}
public String[] getKc() {
return kc;
}
public void setKc(String[] kc) {
this.kc = kc;
}
public String getKcs() {
if(kc!=null)
{kcs="";
for(int i=0;i<kc.length;i++)
kcs+=kc[i]+"&";
}
kcs=kcs.substring(0,kcs.length()-1);
return kcs;
}
public void setKcs(String kcs) {
this.kcs = kcs;
}
public String[] getXq() {
return xq;
}
public void setXq(String[] xq) {
this.xq = xq;
}
public String getXqs() {
if(xq!=null)
{xqs="";
for(int i=0;i<xq.length;i++)
xqs+=xq[i]+"&";
}
xqs=xqs.substring(0,xqs.length()-1);
return xqs;
}
public void setXqs(String xqs) {
this.xqs = xqs;
}
public String getBz() {
return bz;
}
public void setBz(String bz) {
this.bz = bz;
}

}
</span>