java調用存儲過程示例--查詢,修改,刪除

一、根據UserName查詢Users

第一步：新建Users表

userid            int                      not null

username      nvarchar(50)      not null

age                int                      not null                        

第二步：新建存儲過程SeacchUsers

 create procedure SearchUsers @username nvarchar(50), @age int, @userid int As select * from Users Where username like '%'+@username+'%'

 

第三步：用java程序調用存儲過程

 

import java.sql.*; public class Search { public static void main(String[] args) { CallableStatement cmd = null; Connection cn = null; try { Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); String url = "jdbc:sqlserver://databaseip:port;databaseName=db;user=sa;password=******"; String sql = "{? = call SearchUsers(?,?,?)}"; cn = DriverManager.getConnection(url); cmd = cn.prepareCall(sql); cmd.setString("username", "lee"); cmd.setString("age", ""); cmd.setInt("userid", 0); cmd.registerOutParameter(1, java.sql.Types.INTEGER); ResultSet rs = cmd.executeQuery(); while(rs.next()) { int userid = rs.getInt("userid"); String username = rs.getString("username"); int age = rs.getInt("age"); System.out.println("userid is:"+userid); System.out.println("username is:"+username); System.out.println("age is:"+age); } } catch(Exception ex) { ex.printStackTrace(); } finally { try { if (cmd != null) { cmd.close(); cmd = null; } if (cn != null) { cn.close(); cn = null; } } catch (Exception e) { e.printStackTrace(); } } } }  

二、根據UserName修改Users的年齡age

存儲過程

create procedure UpdateUsers @username nvarchar(50), @age int, @userid int as update users set age = @age where username = @username

調用存儲過程的java代碼

import java.sql.*; public class Update { public static void main(String[] args) { CallableStatement cmd = null; Connection cn = null; try { Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); String url = "jdbc:sqlserver://databaseip:port;databaseName=db;user=sa;password=******"; String sql = "{? = call UpdateUsers(?,?,?)}"; cn = DriverManager.getConnection(url); cmd = cn.prepareCall(sql); cmd.setString("username", "johnny"); cmd.setInt("age", 30); cmd.setInt("userid", 0); cmd.registerOutParameter(1, java.sql.Types.INTEGER); int num = cmd.executeUpdate(); if(num>0) { System.out.println("update successful!"); } else { System.out.println("update failed!"); } } catch(Exception ex) { ex.printStackTrace(); } finally { try { if (cmd != null) { cmd.close(); cmd = null; } if (cn != null) { cn.close(); cn = null; } } catch (Exception e) { e.printStackTrace(); } } } }

三、根據UserName刪除Users

類似上面