代码如下 求解哪里错误
package com.pact.mobilestore;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class openorder extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// 统一编码格式
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=UTF-8");
Connection conn = null; // 连接对象
PreparedStatement preparedStatement = null;
HttpSession session = request.getSession();
Object obj = session.getAttribute("currId");
String UId = (String) obj;
String option = request.getParameter("option");
int op =Integer.parseInt(option);
switch(op)
{
case 0:
try {
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/mobilestore";
String userName = "root";
String pass = "root";
conn = DriverManager.getConnection(url, userName, pass);
String sql = "select * from `order` where UId =?";
preparedStatement = conn.prepareStatement(sql);
preparedStatement.setString(1, UId);
java.sql.ResultSet rs = preparedStatement.executeQuery();
List<Entery4> list = new ArrayList<Entery4>();
while (rs.next()) {
Entery4 ent4 = new Entery4();
String OId = rs.getString("OId");
String Date = rs.getString("Date");
String payDate = rs.getString("payDate");
String Total = rs.getString("Total"); // 购买的数量
String state = rs.getString("state");
ent4.setOId(OId);
ent4.setUserId(UId);
ent4.setDate(Date);
ent4.setPayDate(payDate);
ent4.setTotal(Total);
ent4.setState(state);
list.add(ent4);
}
rs.close();
request.setAttribute("info", list);
} catch (SQLException e) {
// TODO: handle exception
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
preparedStatement.close();
conn.close();
} catch (Exception e2) {
// TODO: handle exception
}
}
request.getRequestDispatcher("myorder.jsp").forward(request,
response);
break;
case 1:
try {
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/mobilestore";
String userName = "root";
String pass = "root";
conn = DriverManager.getConnection(url, userName, pass);
String sql = "select * from `order` where UId = ?and state =?";
preparedStatement = conn.prepareStatement(sql);
preparedStatement.setString(1, UId);
preparedStatement.setString(2, "未支付");
java.sql.ResultSet rs = preparedStatement.executeQuery();
List<Entery4> list = new ArrayList<Entery4>();
while (rs.next()) {
Entery4 ent4 = new Entery4();
String OId = rs.getString("OId");
String Date = rs.getString("Date");
String payDate = rs.getString("payDate");
String Total = rs.getString("Total"); // 购买的数量
String state = rs.getString("state");
ent4.setOId(OId);
ent4.setUserId(UId);
ent4.setDate(Date);
ent4.setPayDate(payDate);
ent4.setTotal(Total);
ent4.setState(state);
list.add(ent4);
}
rs.close();
request.setAttribute("info", list);
} catch (SQLException e) {
// TODO: handle exception
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
preparedStatement.close();
conn.close();
} catch (Exception e2) {
// TODO: handle exception
}
}
request.getRequestDispatcher("myorder1.jsp").forward(request,
response);
break;
case 2:
try {
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/mobilestore";
String userName = "root";
String pass = "root";
conn = DriverManager.getConnection(url, userName, pass);
String sql = "select * from `order` where UId = ? and state =?";
preparedStatement = conn.prepareStatement(sql);
preparedStatement.setString(1, UId);
preparedStatement.setString(2, "已支付");
java.sql.ResultSet rs = preparedStatement.executeQuery();
List<Entery4> list = new ArrayList<Entery4>();
while (rs.next()) {
Entery4 ent4 = new Entery4();
String OId = rs.getString("OId");
String Date = rs.getString("Date");
String payDate = rs.getString("payDate");
String Total = rs.getString("Total"); // 购买的数量
String state = rs.getString("state");
ent4.setOId(OId);
ent4.setUserId(UId);
ent4.setDate(Date);
ent4.setPayDate(payDate);
ent4.setTotal(Total);
ent4.setState(state);
list.add(ent4);
}
rs.close();
request.setAttribute("info", list);
} catch (SQLException e) {
// TODO: handle exception
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
preparedStatement.close();
conn.close();
} catch (Exception e2) {
// TODO: handle exception
}
}
request.getRequestDispatcher("myorder2.jsp").forward(request,
response);
break;
// default:
// System.out.println("default");
// break;
}
}
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doPost(req, resp);
}
}
错误提示截取
java.sql.SQLException: Parameter index out of range (2 > number of parameters, which is 1).
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)
at com.mysql.jdbc.PreparedStatement.setInternal(PreparedStatement.java:2715)
at com.mysql.jdbc.PreparedStatement.setString(PreparedStatement.java:3546)
at com.pact.mobilestore.openorder.doPost(openorder.java:56)
at com.pact.mobilestore.openorder.doGet(openorder.java:221)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
