Java 参数索引超出范围(3>参数数量,即2)
java.sql.SQLException:参数索引超出范围3>参数数,即2。为什么这总是错误?我有计数器的参数范围,但我仍然得到错误Java 参数索引超出范围(3>参数数量,即2),java,jdbc,sqlexception,Java,Jdbc,Sqlexception,java.sql.SQLException:参数索引超出范围3>参数数,即2。为什么这总是错误?我有计数器的参数范围,但我仍然得到错误 public static int updateApproved(admin u){ int status=0; try{ Connection con=getConnection(); PreparedStatement ps=con.prepareStat
public static int updateApproved(admin u){
int status=0;
try{
Connection con=getConnection();
PreparedStatement ps=con.prepareStatement("update admission set status=? where admiss_id=?");
ps.setString(1,u.getStatus());
ps.setInt(2,u.getAdmiss_id());
status=ps.executeUpdate();
PreparedStatement ps2=con.prepareStatement("insert into patient(username,password,email,sex,level,fullname,age,bday,blood,address,vaccines,fam_his,surgery,medicine_taken) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)");
ps.setString(1,u.getUsername());
ps.setString(2,u.getPassword());
ps.setString(3,u.getEmail());
ps.setString(4,u.getSex());
ps.setInt(5,u.getLevel());
ps.setString(6,u.getFullname());
ps.setInt(7,u.getAge());
ps.setString(8,u.getBday());
ps.setString(9,u.getAddress());
ps.setString(10,u.getBlood());
ps.setString(11,u.getVaccines());
ps.setString(12,u.getFam_his());
ps.setString(13,u.getSurgery());
ps.setString(14,u.getMedicine_taken());
status=ps2.executeUpdate();
}catch(Exception e){System.out.println(e);}
return status;
}
您正在准备ps2报表,但您的设置字符串都在ps2上。。。要使用ps2,您需要更新这些变量。问题是您误用了变量ps和ps2 由于您已经在上面创建了PreparedStatement变量,因此可以在不创建新变量的情况下再次使用它
PreparedStatement ps2=con.prepareStatement("insert into patient(username,password,email,sex,level,fullname,age,bday,blood,address,vaccines,fam_his,surgery,medicine_taken) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)");
ps.setString(1,u.getUsername()); // ps has this
ps.setString(2,u.getPassword()); // ps has this
ps.setString(3,u.getEmail()); // ps does not have this, it only has 2 ?'s in it, so it explodes
请仔细阅读您的代码,ps!=ps2…谢谢你,非常感谢我们还是学生1个月系统T\T哈哈哈非常感谢你,它成功了^_^
ps = con.prepareStatement("insert into patient
(username, password, email, sex,
level, fullname, age, bday, blood, address, vaccines, fam_his, surgery, medicine_taken)
values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");