Java invoke MySQL stored procedure instance analysis _java

Source: Internet
Author: User

This article describes the Java method for invoking the MySQL stored procedure. Share to everyone for your reference. Specifically as follows:

The test code for the database is as follows:

1. New Table Test

CREATE TABLE Test (
field1 int not null
)
Type=myisam;
INSERT into Test (field1) values (1);

2. Delete existing stored procedures:

--Delete stored procedure
delimiter//--Define closing symbol
drop procedure p_test;

3. mysql stored procedure definition:

CREATE PROCEDURE p_test ()
begin
Declare temp int;
Set temp = 0; 
Update Test Set field1 = VALUES (temp);
End

4. Calling method:

CallableStatement cstmt = Conn.preparecall ("{Call P_test ()}");
Cstmt.executeupdate (); 
Import java.sql.*; /** Igoder/public class Proceduretest {/* tables and stored procedures are defined as follows: Delimiter//DROP table if exists test//CREATE table Test (id int (one) NULL)//drop procedure if EXISTSSP1//CREATE PROCEDURE SP1 (in P int) Comment ' insert into a
   int value ' begin DECLARE v1 int;
   Set v1 = p;
  INSERT into test (ID) values (v1);
  End//drop procedure if exists SP2//CREATE PROCEDURE SP2 (out p int) to begin select Max (ID) into p from test;
  End//drop procedure if exists SP6//CREATE PROCEDURE SP6 () BEGIN select * FROM Test;
 end//*/public static void main (string[] args) {//callin (111);
 CallOut ();
 Callresult (); /** * Calls stored procedures with input parameters * @param in stored procedure input parametervalue/public static void Callin (int in) {//
 Get connection Connection conn = Connectdb.getconnection ();
 CallableStatement cs = null; try {//can be passed directly to the parameter//cs = conN.preparecall ("{Call SP1 (1)}");
  You can also use a question mark instead of CS = Conn.preparecall ("{Call SP1 (?)}");
  Set the value of the first input parameter to Cs.setint (1, in);
 Cs.execute ();
 catch (Exception e) {e.printstacktrace ();
  Finally {try {if (cs!= null) {cs.close ();
  } if (conn!= null) {conn.close ();
  } catch (Exception ex) {ex.printstacktrace ();
 /** * Calls a stored procedure with an output parameter */public static void CallOut () {Connection conn = connectdb.getconnection ();
 CallableStatement cs = null;
  try {cs = Conn.preparecall ("{Call SP2 (?)}");
  The type of the first parameter is int cs.registeroutparameter (1, Types.integer);
  Cs.execute ();
  Get the first value int i = Cs.getint (1);
 System.out.println (i);
 catch (Exception e) {e.printstacktrace ();
  Finally {try {if (cs!= null) {cs.close ();
  } if (conn!= null) {conn.close ();
  } catch (Exception ex) {ex.printstacktrace ();
 /** * Calls the stored procedure of the output result set/public static void Callresult () {Connection conn = connectdb.getconnection (); CallablestAtement cs = null;
 ResultSet rs = null;
  try {cs = Conn.preparecall ("{Call SP6 ()}");
  rs = Cs.executequery ();
  Loop output while (Rs.next ()) {System.out.println (rs.getstring (1));
 } catch (Exception e) {e.printstacktrace ();
  Finally {try {if (rs!= null) {rs.close ();
  } if (cs!= null) {cs.close ();
  } if (conn!= null) {conn.close ();
  } catch (Exception ex) {ex.printstacktrace ();
/** * Get database Connection class * * Import java.sql.Connection;
Import Java.sql.DriverManager;
Import java.sql.PreparedStatement;
Import Java.sql.ResultSet;
Import java.sql.SQLException; 
Import java.sql.Statement;
 Class Connectdb {public static Connection getconnection () {Connection conn = null;
 PreparedStatement preparedstatement = null; 
  try {class.forname ("Org.gjt.mm.mysql.Driver"). newinstance ();
  String dbname = "Test"; String url= "jdbc:mysql://localhost/" +dbname+?user=root&password=root&useunicode=true&
  Characterencoding=8859_1 "; conn= DriverManager.getconnection (URL);
 catch (Exception e) {e.printstacktrace ();
 Return conn;

 } 
}

I hope this article will help you with your Java programming.

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