oracle触发器调用java程序

195losii47

　　1、创建java程序：接收存储过程传递的参数，发送socket通信。

create or replace and compile java source named jym as
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.StringWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Statement;
public class JYM {
public static  String sendSynMsg(String ipAddr, byte[] datas) throws Exception{
InetSocketAddress endpoint = new InetSocketAddress(ipAddr ,18002);
Socket socket = null;
OutputStream out = null;
InputStream in = null;
try{
socket = new Socket();
socket.connect(endpoint);
out = socket.getOutputStream();
in =  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 void say(String ip,byte[] context) throws Exception {
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 into backdata(context) values(?)");
pr.setBytes(1, context);
pr.executeUpdate();
pr.close();
conn.close();
}
}
　　2、存储过程调用java source

create or replace procedure socket(
ip varchar2,
context raw
)
as
language java name
'JYM.say(java.lang.String,byte[])';
　　3、触发器调用存储过程

create or replace trigger todata_after
after insert on todata
for each row
begin
socket('192.168.9.12',:new.context);
end todata_after;
　　
　　
　　代码写好后可以先用存储过程测试：

call  socket('192.168.9.12','023132');
　　为了能在控制台中看见错误信息，要先运行下面3句话

set serveroutput on;
set serveroutput on size 5000;
call dbms_java.set_output(5000);
　　
　　
　　假如你运行存储过程时爆出了  请给用户复制权限的提示则按照提示在sysdba 下赋权限，如：

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')
　　
　　exec 后面的语句会在你的报错提示中打印出来，只要前面加exec就可以了。