斷點(diǎn)

package com.premium.rules;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import org.apache.log4j.Logger;
import org.drools.compiler.DroolsParserException;
import org.drools.compiler.PackageBuilder;
import org.drools.decisiontable.InputType;
import org.drools.decisiontable.SpreadsheetCompiler;
import org.drools.rule.Package;

public class DrlPackageManager {

 // 用于緩存Drools的Package，key為Excel的完整路徑，value為此文件編譯過后的Package
 static Map<String, Package> pkgMap = new HashMap<String, Package>();
 private static Logger logger = Logger.getLogger(DrlPackageManager.class);

/**
  * 通過Excel的文件名緩存Drools的Package
  *
  * @param fileName
  * @return
  * @throws Exception
  */
 public static Package getPackageByXsl(String fileName) throws Exception {
  Package pkg = (Package) pkgMap.get(fileName);
  if (pkg != null)
   return pkg;

  final SpreadsheetCompiler converter = new SpreadsheetCompiler();
  InputStream is = null;
  try {
   is = DrlPackageManager.class.getResourceAsStream(fileName);
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   is.close();
   throw new Exception("====讀取規(guī)則的資源文件" + fileName + "出錯(cuò)，請(qǐng)檢查文件"+ fileName + "=====", e);
  }
  String drl = null;
  try {
   drl = converter.compile(is, InputType.XLS);
   logger.debug("Drools Excel規(guī)則文件：" + fileName + "編譯成.drl文件的結(jié)果："+ drl);
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   is.close();
   throw new Exception("xls文件編譯成drl文件出錯(cuò)", e);
  }

  PackageBuilder builder = new PackageBuilder();
  StringReader srd = new StringReader(drl);
  builder.addPackageFromDrl(srd);
  pkg = builder.getPackage();
  pkgMap.put(fileName, pkg);
  is.close();
  return pkg;
 }