解释XML--刘双

 public bool LoadConfig(String fileName)
        {
            System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
            try
            {
                doc.Load(fileName);
                XmlNode configNode = doc.SelectSingleNode("LuceneConfig");
                createIndexPath = configNode.SelectSingleNode("CreateIndexPath").InnerText;  // 建索引的路径
                searchIndexPath = configNode.SelectSingleNode("CreateIndexPath").InnerText;   // 搜索时的路径
                dictPath = configNode.SelectSingleNode("DictPath").InnerText;

                // 数据库查询相关
                XmlNode datasource = configNode.SelectSingleNode("DataSource");
                string server = datasource.SelectSingleNode("sql_host").InnerText;
                string user = datasource.SelectSingleNode("sql_user").InnerText;
                string pwd = datasource.SelectSingleNode("sql_pwd").InnerText;
                string db = datasource.SelectSingleNode("sql_db").InnerText;
                strSql = datasource.SelectSingleNode("sql_query").InnerText;

                strConn = "server=" + server + ";uid=" + user + ";pwd=" + pwd + ";database=" + db;

                // 读取索引字段及配置
                XmlNodeList nodeList = configNode.SelectSingleNode("Indexer").SelectSingleNode("Fields").ChildNodes;//获取bookstore节点的所有子节点
                //Dictionary<string, SchemaField> IndexFields = new Dictionary<string, SchemaField>();
                foreach (XmlNode xn in nodeList)//遍历所有子节点
                {

                    string fieldName = xn.SelectSingleNode("Name").InnerText;  // 索引中的名称
                    string dbFieldName = xn.SelectSingleNode("DBField").InnerText;    // 对应数据库中的字段名
                    bool bStore = xn.SelectSingleNode("Storened").InnerText.Equals("1") ? true : false;     //是否存储
                    bool bAnalyzed = xn.SelectSingleNode("Analyzed").InnerText.Equals("1") ? true : false;   // 是否分词
                    bool bIndex = xn.SelectSingleNode("Indexed").InnerText.Equals("1") ? true : false;     // 是否索引
                    string type = xn.SelectSingleNode("Type").InnerText;                                // 字段的类别
                    string defaultValue = xn.SelectSingleNode("DefaultValue").InnerText;                  // 字段的分词方式
                    string AnalyzerMode = xn.SelectSingleNode("AnalyzerMode").InnerText;
                    float fBoost = (float)Convert.ToDouble(xn.SelectSingleNode("Boost").InnerText);       // 字段的权重
                    SchemaField fd = CreateSchemaField(fieldName, dbFieldName, defaultValue, bIndex, bStore, bAnalyzed, fBoost, AnalyzerMode, type);
                    indexFields.Add(fieldName, fd);
                }

                // 默认的关键字 查询字段
                defaultSearchFields = configNode.SelectSingleNode("Indexer").SelectSingleNode("DefaultSearchFields").InnerText.Split(",".ToCharArray());
                ramBufferSizeMB = int.Parse(configNode.SelectSingleNode("Indexer").SelectSingleNode("Men_limit").InnerText);
                return true;
            }
            catch (Exception e)
            {
                return false;
            }

        }