Oracle triggers call Java programs

1, create Java program: Receive parameters passed by stored procedure, send socket communication. Create or replace and Compilejava source named Jym asImportJava.io.BufferedReader;ImportJava.io.inputstream;importjava.io.inputstreamreader;ImportJava.io.OutputStream;Importjava.io.stringwriter;importjava.net.inetsocketaddress;ImportJava.net.Socket;Importjava.sql.Connection;Importjava.sql.drivermanager;importjava.sql.preparedstatement;Importjava.sql.Statement; Public classJym { Public StaticStringsendsynmsg (String ipaddr,byte[] datas)throwsexception{inetsocketaddress Endpoint=NewInetsocketaddress (IPADDR, 18002); Socket Socket=NULL; OutputStream out=NULL; InputStream in=NULL; Try{Socket=NewSocket ();   Socket.connect (endpoint); out=Socket.getoutputstream (); Inch=Socket.getinputstream ();   Out.write (datas);   Out.flush (); return NULL; } finally {   if(Out! =NULL) {    Try{out.close (); } Catch(Exception ex) {ex.printstacktrace (); }   }   if(In! =NULL) {    Try{in.close (); } Catch(Exception ex) {ex.printstacktrace (); }   }   if(Socket! =NULL) {    Try{socket.close (); } Catch(Exception ex) {ex.printstacktrace (); }   }  }} Public Static voidSay (String IP,byte[] context)throwsException {String str=jym.sendsynmsg (Ip,context); Class.forName ("Oracle.jdbc.driver.OracleDriver"); Connection Conn=drivermanager.getconnection ("Jdbc:oracle:thin:@192.168.9.109:1521:orcl", "Zhym", "jhhz621"); PreparedStatement PR=conn.preparestatement ("Insert Intobackdata (?)"); Pr.setbytes (1, context);  Pr.executeupdate ();  Pr.close ();  Conn.close ();}} 2, stored procedure call Java source Create or replace procedure socket (IP varchar2, context raw) as language Java name ' Jym.say (java.lang.string,byte[]) '; 3, trigger call stored procedure Create or replace trigger Todata_after after insert on Todata forEach row begin socket (' 192.168.9.12 ',:New. Context);   End Todata_after; Once the code is written, you can test it with a stored procedure: The SQL code call socket (' 192.168.9.12 ', ' 023132 ');   In order to be able to see the error message in the console, first run the following 3 words set serveroutput on; Set serveroutput on size5000; Call Dbms_java.set_output (5000); If you run a stored procedure with a prompt to copy permissions to the user, follow the prompts to assign permissions under SYSDBA, such as: SQL code exec dbms_java.grant_permission (' Zhym ', ' SYS:java.net.SocketPermission ', ' 192.168.9.12:18002 ', ' connect,resolve ') exec dbms_java.grant_permission (' Zhym ', ' SYS:java.net.SocketPermission ', ' 127.0.0.1:1521 ', ' connect,resolve ') execdbms_java.grant_permission (' Zhym ', ' SYS:java.net.SocketPermission ', ' 192.168.9.12:18002 ', ' connect,resolve ') execdbms_java.grant_permission (' Zhym ', ' SYS:java.net.SocketPermission ', ' 127.0.0.1:1521 ', ' connect,resolve 'after exec, the statement will be printed in your error message, as long as the front plus exec. 

Oracle triggers call Java programs