📄 moneytransfer.java
字号:
package pp;
import java.sql.*;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.io.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import javax.swing.*;
public class MoneyTransfer extends HttpServlet {
/**
* Constructor of the object.
*/
public MoneyTransfer() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
String start=request.getParameter("fromAccount");
String end=request.getParameter("toAccount");
double money=Double.parseDouble(request.getParameter("money"));
double balance1=0;
double balance2=0;
String sql1="select BALANCE from savingsAccount where ACCOUNTNUMBER='"+start+"'";
String sql2="select BALANCE from savingsAccount where ACCOUNTNUMBER='"+end+"'";
dbconn con=new dbconn();
ResultSet rs=null;
try{
rs=con.executeQuery(sql2);
if(rs.next()){
balance2=rs.getDouble("BALANCE");
balance2=balance2+money;
rs=con.executeQuery(sql1);
rs.next();
balance1=rs.getDouble("BALANCE");
if(balance1>=money){
rs=con.executeQuery("select ACCOUNT_DISCRIM from ACCOUNT where ACCOUNTNUMBER='"+start+"'");
rs.next();
String type1=rs.getString("ACCOUNT_DISCRIM");
rs=con.executeQuery("select ACCOUNT_DISCRIM from ACCOUNT where ACCOUNTNUMBER='"+end+"'");
rs.next();
String type2=rs.getString("ACCOUNT_DISCRIM");
if(type1.equals("活期")){
con.executeUpdate("insert into RDACCOUNT (ID,ACCOUNTNUMBER,AMOUNT15,TIME)values('"+new Date().getTime()+"','"+start+"',"+-money+",'"+df.format(new Date())+"')");
}else{
con.executeUpdate("insert into FDACCOUNT (ID,ACCOUNTNUMBER,AMOUNT,ENDINGTIME)values('"+new Date().getTime()+"','"+start+"',"+-money+",'"+df.format(new Date())+"')");
}
if(type2.equals("定期")){
con.executeUpdate("insert into FDACCOUNT (ID,ACCOUNTNUMBER,AMOUNT,ENDINGTIME)values('"+new Date().getTime()+"','"+end+"',"+money+",'"+df.format(new Date())+"')");
}else{
con.executeUpdate("insert into RDACCOUNT values('"+new Date().getTime()+"','"+end+"',"+money+",'"+0.0005*money+"','"+df.format(new Date())+"')");
}
balance1=balance1-money;
con.executeUpdate("update savingsAccount set balance="+balance1+" where ACCOUNTNUMBER='"+start+"'");
con.executeUpdate("update savingsAccount set balance="+balance2+" where ACCOUNTNUMBER='"+end+"'");
con.executeUpdate("insert into TRANSACTION (TRANSACTIONID,DATEOFTRANSACTION,AMOUNT,TYPEOFTRANSACTION,OWNEDTRANSACTIONS_ACCOUNTNUM19)values('"+new Date().getTime()+"','"+df.format(new Date())+"',"+money+",'支出','"+start+"')");
con.executeUpdate("insert into TRANSACTION (TRANSACTIONID,DATEOFTRANSACTION,AMOUNT,TYPEOFTRANSACTION,OWNEDTRANSACTIONS_ACCOUNTNUM19)values('"+new Date().getTime()+"','"+df.format(new Date())+"',"+money+",'收入','"+end+"')");
con.conn.commit();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE>");
out.println("</HEAD>");
out.println(" <BODY>");
out.println("转账已成功!<BR>");
out.println(" </BODY>");
out.println("</HTML>");
}else{
con.conn.rollback();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE>");
out.println("</HEAD>");
out.println(" <BODY>");
out.println("余额不足!<BR>");
out.println(" </BODY>");
out.println("</HTML>");
}
}else{
con.conn.rollback();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE>");
out.println("</HEAD>");
out.println(" <BODY>");
out.println("该账户不存在!<BR>");
out.println(" </BODY>");
out.println("</HTML>");
}
con.closeConn();
}catch(Exception e){
e.printStackTrace();
}
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -