JDBC批量平添

public boolean insertJob(long jobid,List prlist,String time,int khid){

boolean b=false;
Connection conn=null;
PreparedStatement ps =null; 
conn = DB.getConnection();
String sql="insert into job(jobid,msisdn,sendtime,name,khid) values (?,?,?,?,?)";
try{
conn.setAutoCommit(false);

ps = conn.prepareStatement(sql);

for(int i=0;i<prlist.size();i++){
Partyregister pr=(Partyregister)prlist.get(i);
ps.setLong(1, jobid);
ps.setString(2,pr.getMsisdn());
ps.setTimestamp(3, Timestamp.valueOf(time));
ps.setString(4, pr.getName());
ps.setInt(5, khid);
ps.addBatch();
}

    ps.executeBatch();
    conn.commit();  
    conn.setAutoCommit(true);
    b=true;
}
catch(Exception e){
b=false;
    System.err.println("ERROR:"+e);
    }
       finally
       {
           try
           {
               ps.close();
               if(null!=conn)
               {
               conn.close();
               }
           }
           catch(SQLException sqle)
           {
           System.err.println("SQLException, sqle=" + sqle.toString());
           }
       }
      
return b;
}