diff --git a/pom.xml b/pom.xml
index ea6236c..aac57ba 100644
--- a/pom.xml
+++ b/pom.xml
@@ -33,9 +33,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>7</source>
-                    <target>7</target>
-
+                    <source>8</source>
+                    <target>8</target>
                 </configuration>
             </plugin>
         </plugins>
diff --git a/src/main/java/cn/ac/iie/config/ApplicationConfig.java b/src/main/java/cn/ac/iie/config/ApplicationConfig.java
index 50fe885..f8d799b 100644
--- a/src/main/java/cn/ac/iie/config/ApplicationConfig.java
+++ b/src/main/java/cn/ac/iie/config/ApplicationConfig.java
@@ -13,6 +13,7 @@ public class ApplicationConfig {
     public static final Integer OFFLINE_SCHEDULE_SECOND = ConfigUtils.getIntProperty("offline.schedule.second");
     public static final String OFFLINE_IMPORT_PATH = ConfigUtils.getStringProperty("offline.import.path");
     public static final String OFFLINE_OUTPUT_PATH = ConfigUtils.getStringProperty("offline.output.path");
+    public static final Integer OFFLINE_READIN_BATCH = ConfigUtils.getIntProperty("offline.readin.batch");
 
 
     public static final Boolean UPDATE_SWITCH = ConfigUtils.getBooleanProperty("update.switch");
@@ -27,7 +28,7 @@ public class ApplicationConfig {
     public static final Integer LOG_OFFLINE_NUMBER = ConfigUtils.getIntProperty("log.offline.number");
     public static final String LOG_BC_QUERY_REPORT_FILE = ConfigUtils.getStringProperty("log.bc.query.report.file");
 
-    public static final Integer MAXIMUM_URL_ONCE = ConfigUtils.getIntProperty("maximum.url.once");
+    public static final Integer MAXIMUM_URL_ONCE_BC_QUERY = ConfigUtils.getIntProperty("maximum.url.once.bc.query");
 
 
 }
diff --git a/src/main/java/cn/ac/iie/dao/BaseMariaDB.java b/src/main/java/cn/ac/iie/dao/BaseMariaDB.java
index ebf4677..c5fad03 100644
--- a/src/main/java/cn/ac/iie/dao/BaseMariaDB.java
+++ b/src/main/java/cn/ac/iie/dao/BaseMariaDB.java
@@ -1,6 +1,5 @@
 package cn.ac.iie.dao;
 
-
 import cn.ac.iie.config.MariaDBConfig;
 import cn.ac.iie.utils.TimeUtils;
 import org.apache.log4j.Logger;
@@ -10,6 +9,7 @@ import java.util.Arrays;
 import java.util.Date;
 import java.util.List;
 import java.util.Properties;
+import java.util.stream.Collectors;
 
 /**
  * @author yjy
@@ -67,11 +67,17 @@ public class BaseMariaDB {
         return querySqlExecute(getQueryRecordSql(fqdn));
     }
 
+    public ResultSet getDatabaseRecord(List<String> fqdns){
+        return querySqlExecute(getQueryRecordSql(fqdns));
+    }
+
     public void writeSqlExecute(String sql){
         try {
             statement.executeUpdate(sql);
+        } catch (SQLIntegrityConstraintViolationException e){
+            LOG.error("Duplicated entry for key 'PRIMARY'");
         } catch (SQLException exception) {
-            LOG.debug("Sql : " + sql);
+            LOG.error("Sql : " + sql);
             exception.printStackTrace();
         }
     }
@@ -150,10 +156,18 @@ public class BaseMariaDB {
                 .append(MariaDBConfig.MARIADB_TABLE).append(' ')
                 .append(" WHERE fqdn = '").append(fqdn).append('\'');
 
-        String resSql = sql.toString();
-        resSql = resSql.replace("'null'", "null");
+        return sql.toString();
+    }
 
-        return resSql;
+    public String getQueryRecordSql(List<String> fqdns){
+        StringBuilder sql = new StringBuilder("SELECT * FROM ");
+        String queryFqdns = fqdns.stream().map(s -> "'" + s + "'").collect(Collectors.joining(","));
+
+        sql.append(MariaDBConfig.MARIADB_DATABASE).append(".")
+                .append(MariaDBConfig.MARIADB_TABLE).append(' ')
+                .append(" WHERE fqdn in (").append(queryFqdns).append(")");
+
+        return sql.toString();
     }
 
     public static String getExpiredRecordSql(){
diff --git a/src/main/java/cn/ac/iie/service/OfflineTask.java b/src/main/java/cn/ac/iie/service/OfflineTask.java
index 0a495a8..adb2fa9 100644
--- a/src/main/java/cn/ac/iie/service/OfflineTask.java
+++ b/src/main/java/cn/ac/iie/service/OfflineTask.java
@@ -5,8 +5,8 @@ import cn.ac.iie.dao.BaseMariaDB;
 import cn.ac.iie.dao.FqdnFile;
 import cn.ac.iie.utils.BrightCloudUtils;
 import cn.ac.iie.utils.FileUtils;
-import cn.ac.iie.utils.MariaDBConnect;
 import cn.ac.iie.utils.LogUtils;
+import cn.ac.iie.utils.MariaDBConnect;
 import com.alibaba.fastjson.JSONObject;
 import org.apache.log4j.Logger;
 
@@ -17,7 +17,9 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.text.DecimalFormat;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.TimerTask;
 
 /**
  * @author yjy
@@ -38,7 +40,6 @@ public class OfflineTask extends TimerTask {
     }
 
     private void runTask() throws SQLException, IOException {
-
         List<String> fileNames = catpureNewFiles();
         List<String> fqdns;
 
@@ -48,153 +49,154 @@ public class OfflineTask extends TimerTask {
         BrightCloudUtils brightCloudUtils = new BrightCloudUtils();
         List<String> queryTypes = BrightCloudUtils.getQueryTypes();
 
-        for (String fileName: fileNames){
+        for (String fileName : fileNames) {
             File importFile = new File(fileName);
             String importFileName = FileUtils.getFileName(importFile);
+            InputStreamReader inputStreamReader = new InputStreamReader(
+                    new FileInputStream(importFile), "GBK");
+            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
+
+            Long fileLineCount = FileUtils.getFileLineNum(importFile);
+
+            // 输出结果保存文件
             LOG.info("[Offline import file query]-" + importFileName + ": File Found.");
             String outputFileName =
-                    importFileName.substring(0, importFileName.length()-ApplicationConfig.OFFLINE_IMPORT_FILENAME_SUFFIX.length())
-                    + ApplicationConfig.OFFLINE_OUTPUT_FILENAME_SUFFIX;
-            // TODO 遍历处理消耗太大
-            fqdns = FileUtils.readTxtFileIntoStringArrList(importFile.toString());
-            fqdns = SingleTermTask.getCheckedFqdn(fqdns);
+                    importFileName.substring(0, importFileName.length() - ApplicationConfig.OFFLINE_IMPORT_FILENAME_SUFFIX.length())
+                            + ApplicationConfig.OFFLINE_OUTPUT_FILENAME_SUFFIX;
+            File outputFile = new File(ApplicationConfig.OFFLINE_OUTPUT_PATH + "/" + outputFileName);
+            if (!outputFile.exists()) {
+                FileUtils.createFile(new File(ApplicationConfig.OFFLINE_OUTPUT_PATH), outputFileName);
+            }
+            OutputStream outStream = new FileOutputStream(outputFile);
+            OutputStreamWriter outWriter = new OutputStreamWriter(outStream, StandardCharsets.UTF_8);
+            // 添加表头
+            outWriter.write(FqdnFile.getKeys() + "\n");
 
-            long standardFqdnNum = fqdns.size();
+            List<String> toQueryBC = new ArrayList<>();
+
+            long standardFqdnNum = 0;
+            long complNum = 0;
             long dbQueryNum = 0;
             long bcQueryNum = 0;
             long failQueryNum = 0;
             long effecResNum = 0;
             long noLabelNum = 0;
-            if (standardFqdnNum>0){
 
-                // 创建结果保存文件
-                File outputFile = new File(ApplicationConfig.OFFLINE_OUTPUT_PATH + "/" + outputFileName);
-                if (!outputFile.exists()){
-                    FileUtils.createFile(new File(ApplicationConfig.OFFLINE_OUTPUT_PATH), outputFileName);
-                }
+            // 批量读取数据，读取时去空行&去空格
+            LOG.info("[Offline import file query]-" + importFileName + " Progress: 0.00%");
+            while ((fqdns = FileUtils.getBatchFqdnReadIn(bufferedReader, ApplicationConfig.OFFLINE_READIN_BATCH)).size()>0) {
+                // 校验格式&去重
+                fqdns = SingleTermTask.getCheckedFqdn(fqdns);
+                standardFqdnNum += fqdns.size();
 
-                OutputStream outStream = new FileOutputStream(outputFile);
-                OutputStreamWriter outWriter = new OutputStreamWriter(outStream, StandardCharsets.UTF_8);
-                outWriter.write(FqdnFile.getKeys() + "\n");
-
-                List<String> fqdnToQuery = new ArrayList<>();
-                // 遍历列表域名
-                LOG.info("[Offline import file query]-" + importFileName + " Progress: 0%");
-                for (int index=0; index<standardFqdnNum; index=index+1){
-                    String fqdn = fqdns.get(index);
-                    FqdnFile fqdnFile;
-                    if (fqdn.equals("")){
-                        continue;
-                    }
-
-                    ResultSet rs = mariaDB.getDatabaseRecord(fqdn);
-                    if (rs.next()){
-                        // 查db
-                        fqdnFile = SingleTermTask.ResSet2FqdnFile(rs);
-                        dbQueryNum += 1;
+                // 批量db查询
+                ResultSet dbResult = mariaDB.getDatabaseRecord(fqdns);
+                List<String> dbQueryFqdns = new ArrayList<>();
+                while (dbResult.next()) {
+                    try {
+                        FqdnFile fqdnFile = SingleTermTask.ResSet2FqdnFile(dbResult);
+                        dbQueryFqdns.add(fqdnFile.getFqdn());
                         outWriter.write(fqdnFile.getValues() + "\n");
-                        if (fqdnFile.getQuery_success().equals(false)){
-                            failQueryNum += 1;
-                        } else if (fqdnFile.getCategory_id().equals(0)){
-                            noLabelNum += 1;
-                        } else {
-                            effecResNum += 1;
+
+                        // 计数
+                        dbQueryNum += 1;
+                        complNum += 1;
+                        failQueryNum = fqdnFile.getQuery_success().equals(false) ? failQueryNum + 1 : failQueryNum;
+                        noLabelNum = fqdnFile.getCategory_id().equals(0) ? noLabelNum + 1 : noLabelNum;
+                        effecResNum = (fqdnFile.getQuery_success().equals(false) | fqdnFile.getCategory_id().equals(0)) ?
+                                effecResNum : effecResNum+1;
+
+                        // 打印进度日志
+                        if (complNum > 0 && complNum % ApplicationConfig.LOG_OFFLINE_NUMBER == 0) {
+                            String percent = new DecimalFormat("##.00%").format((float) complNum / fileLineCount);
+                            LOG.info("[Offline import file query]-" + importFileName + " Progress:" + percent);
                         }
-                    } else {
-                        // 查bc
-                        fqdnToQuery.add(fqdn);
-                        bcQueryNum = bcQueryNum + 1;
 
-                        // 缓存满
-                        if (fqdnToQuery.size() == ApplicationConfig.MAXIMUM_URL_ONCE){
-                            // 批量查
-                            JSONObject resObj = brightCloudUtils.getQueryResults(fqdnToQuery);
-                            List<FqdnFile> fqdnFiles = brightCloudUtils.responseSparse(resObj);
-                            assert fqdnFiles.size()>0;
-
-                            // 存数据库
-                            mariaDB.insertRecords(fqdnFiles);
-
-                            // 写入output
-                            for (FqdnFile tmpFile:fqdnFiles){
-                                outWriter.write(tmpFile.getValues() + "\n");
-                                if (tmpFile.getQuery_success().equals(false)){
-                                    failQueryNum += 1;
-                                } else if (tmpFile.getCategory_id().equals(0)){
-                                    noLabelNum += 1;
-                                } else {
-                                    effecResNum += 1;
-                                }
-                            }
-
-//                            // 打印处理进度日志
-//                            String percent = new DecimalFormat("##.0%").format((float)index/standardFqdnNum);
-//                            LOG.info("[Offline import file query]-" + importFileName + " Progress:" + percent);
-
-                            // 缓存复位
-                            fqdnToQuery = new ArrayList<>();
-                        }
-                    }
-
-                    // 打印处理进度至日志
-                    if (index>0 && index % ApplicationConfig.LOG_OFFLINE_NUMBER==0){
-                        String percent = new DecimalFormat("##.0%").format((float)index/standardFqdnNum);
-                        LOG.info("[Offline import file query]-" + importFileName + " Progress:" + percent);
+                    } catch (Exception e) {
+                        LOG.error("[Offline import file query]-" + importFileName + ": Wrong in database query");
+                        e.printStackTrace();
                     }
                 }
 
-                // 剩余待查bc
-                if (fqdnToQuery.size()>0){
-                    JSONObject resObj = brightCloudUtils.getQueryResults(fqdnToQuery);
+
+                // 添加bc查询目标
+                fqdns.removeAll(dbQueryFqdns);
+                toQueryBC.addAll(fqdns);
+                while (toQueryBC.size() > ApplicationConfig.MAXIMUM_URL_ONCE_BC_QUERY) {
+//                    LOG.debug("Execute batch bc query...");
+                    JSONObject resObj = brightCloudUtils.getQueryResults(toQueryBC.subList(0, ApplicationConfig.MAXIMUM_URL_ONCE_BC_QUERY));
                     List<FqdnFile> fqdnFiles = brightCloudUtils.responseSparse(resObj);
-                    assert fqdnFiles.size()>0;
+                    assert fqdnFiles.size() > 0;
                     // 存数据库
                     mariaDB.insertRecords(fqdnFiles);
-                    // 写入output
-                    for (FqdnFile tmpFile:fqdnFiles){
+                    for (FqdnFile tmpFile : fqdnFiles) {
+                        // 写入output
                         outWriter.write(tmpFile.getValues() + "\n");
-                        if (tmpFile.getQuery_success().equals(false)){
-                            failQueryNum += 1;
-                        } else if (tmpFile.getCategory_id().equals(0)){
-                            noLabelNum += 1;
-                        } else {
-                            effecResNum += 1;
+                        // 计数
+                        bcQueryNum += 1;
+                        complNum += 1;
+                        failQueryNum = tmpFile.getQuery_success().equals(false) ? failQueryNum + 1 : failQueryNum;
+                        noLabelNum = tmpFile.getCategory_id().equals(0) ? noLabelNum + 1 : noLabelNum;
+                        effecResNum = (tmpFile.getQuery_success().equals(false) | tmpFile.getCategory_id().equals(0)) ? effecResNum : effecResNum+1;
+
+                        // 打印进度日志
+                        if (complNum > 0 && complNum % ApplicationConfig.LOG_OFFLINE_NUMBER == 0) {
+                            String percent = new DecimalFormat("##.00%").format((float) complNum / fileLineCount);
+                            LOG.info("[Offline import file query]-" + importFileName + " Progress:" + percent);
                         }
                     }
+                    toQueryBC = toQueryBC.subList(ApplicationConfig.MAXIMUM_URL_ONCE_BC_QUERY, toQueryBC.size());
                 }
-
-                LOG.info("[Offline import file query]-" + importFileName + " Progress: 100%");
-                // 打印处理结果至日志
-                LOG.info("[Offline import file query]-" + importFileName + " "
-                        + "Query result: submit " + standardFqdnNum+" valid fqdns, "
-                        + dbQueryNum + " (" + new DecimalFormat("##.0%").format((float)dbQueryNum/standardFqdnNum) + ")" + " results from database，"
-                        + bcQueryNum + " (" + new DecimalFormat("##.0%").format((float)bcQueryNum/standardFqdnNum) + ")" + " results from bright cloud. "
-                        + effecResNum + " (" + new DecimalFormat("##.0%").format((float)effecResNum/standardFqdnNum) + ")" + " effective results，"
-                        + failQueryNum + " (" + new DecimalFormat("##.0%").format((float)failQueryNum/standardFqdnNum) + ")" + " failed queries，"
-                        + noLabelNum + " (" + new DecimalFormat("##.0%").format((float)noLabelNum/standardFqdnNum) + ")" + " unlabeled results");
-                LOG.info("[Offline import file query]-" + importFileName + " Results saved in " + outputFile.toString());
-                // 打印查询服务调用记录日志
-                if (bcQueryNum > 0){
-                    OutputStream bcQueryLogStream = new FileOutputStream(ApplicationConfig.LOG_BC_QUERY_REPORT_FILE, true);
-                    OutputStreamWriter bcQueryLogWriter = new OutputStreamWriter(bcQueryLogStream, StandardCharsets.UTF_8);
-                    for (String type : queryTypes) {
-                        java.sql.Date d = new java.sql.Date(System.currentTimeMillis());
-                        bcQueryLogWriter.write(d + "," + "OfflineTask," + importFileName + "," + type + "," + bcQueryNum + "\n");
-                    }
-
-                    FileUtils.writerClose(bcQueryLogWriter, bcQueryLogStream);
-                }
-
-                FileUtils.writerClose(outWriter, outStream);
-            } else {
-                continue;
             }
 
-            // 查询结束修改后缀
-            importFile.renameTo(new File(
-                    importFile.toString().substring(0, importFile.toString().length()-ApplicationConfig.OFFLINE_IMPORT_FILENAME_SUFFIX.length())
+            // 完成剩余bc查询
+            if (toQueryBC.size()>0){
+                JSONObject resObj = brightCloudUtils.getQueryResults(toQueryBC);
+                List<FqdnFile> fqdnFiles = brightCloudUtils.responseSparse(resObj);
+                assert fqdnFiles.size() > 0;
+                // 存数据库
+                mariaDB.insertRecords(fqdnFiles);
+                for (FqdnFile tmpFile : fqdnFiles) {
+                    // 写入output
+                    outWriter.write(tmpFile.getValues() + "\n");
+                    // 计数
+                    bcQueryNum += 1;
+                    complNum += 1;
+                    failQueryNum = tmpFile.getQuery_success().equals(false) ? failQueryNum + 1 : failQueryNum;
+                    noLabelNum = tmpFile.getCategory_id().equals(0) ? noLabelNum + 1 : noLabelNum;
+                    effecResNum = (tmpFile.getQuery_success().equals(true) && tmpFile.getCategory_id().equals(1)) ? effecResNum + 1 : effecResNum;
+                }
+            }
+
+            LOG.info("[Offline import file query]-" + importFileName + " Progress: 100.00%");
+            // 打印处理结果至日志
+            LOG.info("[Offline import file query]-" + importFileName + " "
+                    + "Query result: submit " + standardFqdnNum + " valid fqdns, "
+                    + dbQueryNum + " (" + new DecimalFormat("##.0%").format((float) dbQueryNum / standardFqdnNum) + ")" + " results from database，"
+                    + bcQueryNum + " (" + new DecimalFormat("##.0%").format((float) bcQueryNum / standardFqdnNum) + ")" + " results from bright cloud. "
+                    + effecResNum + " (" + new DecimalFormat("##.0%").format((float) effecResNum / standardFqdnNum) + ")" + " effective results，"
+                    + failQueryNum + " (" + new DecimalFormat("##.0%").format((float) failQueryNum / standardFqdnNum) + ")" + " failed queries，"
+                    + noLabelNum + " (" + new DecimalFormat("##.0%").format((float) noLabelNum / standardFqdnNum) + ")" + " unlabeled results");
+            LOG.info("[Offline import file query]-" + importFileName + " Results saved in " + outputFile.toString());
+            // 打印查询服务调用记录日志
+            if (bcQueryNum > 0) {
+                OutputStream bcQueryLogStream = new FileOutputStream(ApplicationConfig.LOG_BC_QUERY_REPORT_FILE, true);
+                OutputStreamWriter bcQueryLogWriter = new OutputStreamWriter(bcQueryLogStream, StandardCharsets.UTF_8);
+                for (String type : queryTypes) {
+                    java.sql.Date d = new java.sql.Date(System.currentTimeMillis());
+                    bcQueryLogWriter.write(d + "," + "OfflineTask," + importFileName + "," + type + "," + bcQueryNum + "\n");
+                }
+
+                FileUtils.writerClose(bcQueryLogWriter, bcQueryLogStream);
+            }
+
+            FileUtils.writerClose(outWriter, outStream);
+
+            //查询结束修改后缀
+            importFile.renameTo(new File(importFile.toString().substring(0, importFile.toString().length() - ApplicationConfig.OFFLINE_IMPORT_FILENAME_SUFFIX.length())
                     + ApplicationConfig.OFFLINE_IMPORT_FILEDONE_SUFFIX));
 
+            FileUtils.readerClose(bufferedReader, inputStreamReader);
         }
 
         MariaDBConnect.close(mariaStat, mariaConn);
@@ -226,12 +228,6 @@ public class OfflineTask extends TimerTask {
         }
         return newFiles;
     }
-
-    private Boolean checkFileName(String fileName) {
-        boolean isStandard = true;
-        if (!fileName.endsWith(ApplicationConfig.OFFLINE_IMPORT_FILENAME_SUFFIX)) {
-            isStandard = false;
-        }
-        return isStandard;
-    }
 }
+
+
diff --git a/src/main/java/cn/ac/iie/service/SingleTermTask.java b/src/main/java/cn/ac/iie/service/SingleTermTask.java
index 5d938d1..d7978fa 100644
--- a/src/main/java/cn/ac/iie/service/SingleTermTask.java
+++ b/src/main/java/cn/ac/iie/service/SingleTermTask.java
@@ -1,8 +1,10 @@
 package cn.ac.iie.service;
 
 import cn.ac.iie.config.ApplicationConfig;
+import cn.ac.iie.dao.BaseMariaDB;
 import cn.ac.iie.dao.FqdnFile;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.log4j.Logger;
 
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -18,6 +20,7 @@ import java.util.regex.Pattern;
  * @date 2021/2/25 2:40 下午
  */
 public class SingleTermTask {
+    private static final Logger LOG = Logger.getLogger(SingleTermTask.class);
 
     /**
      * 提取三级域名
@@ -71,6 +74,8 @@ public class SingleTermTask {
             // 去重 & 校验
             if (isValidDomain(fqdn) && !res.contains(fqdn)){
                 res.add(fqdn.toLowerCase());
+            } else {
+                LOG.debug("Bad or duplicated fqdn:" + fqdn);
             }
         }
         return res;
diff --git a/src/main/java/cn/ac/iie/service/UpdateTask.java b/src/main/java/cn/ac/iie/service/UpdateTask.java
index a6bba9e..8290016 100644
--- a/src/main/java/cn/ac/iie/service/UpdateTask.java
+++ b/src/main/java/cn/ac/iie/service/UpdateTask.java
@@ -10,13 +10,15 @@ import cn.ac.iie.utils.MariaDBConnect;
 import com.alibaba.fastjson.JSONObject;
 import org.apache.log4j.Logger;
 
-import java.io.*;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
 import java.nio.charset.StandardCharsets;
 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
-import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.TimerTask;
@@ -62,8 +64,7 @@ public class UpdateTask extends TimerTask {
             updateFqdns.add(unlabeledSet.getString("fqdn"));
         }
         long unlabeledNum = updateFqdns.size() - expiredNum;
-
-        //TODO 分批查询
+        
         if (updateFqdns.size()>0){
             JSONObject jsonObj = brightCloudUtils.getQueryResults(updateFqdns);
             List<FqdnFile> updateFiles = brightCloudUtils.responseSparse(jsonObj);
diff --git a/src/main/java/cn/ac/iie/utils/BrightCloudUtils.java b/src/main/java/cn/ac/iie/utils/BrightCloudUtils.java
index 45b68e3..7e564d1 100644
--- a/src/main/java/cn/ac/iie/utils/BrightCloudUtils.java
+++ b/src/main/java/cn/ac/iie/utils/BrightCloudUtils.java
@@ -1,11 +1,10 @@
 package cn.ac.iie.utils;
 
-import cn.ac.iie.dao.FqdnFile;
 import cn.ac.iie.config.ApplicationConfig;
+import cn.ac.iie.dao.FqdnFile;
 import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
-import com.google.common.collect.Lists;
 import org.apache.log4j.Logger;
 
 import java.io.*;
@@ -55,7 +54,7 @@ public class BrightCloudUtils {
     private final HashMap<Integer, List<String>> catId2Info = new HashMap<>();
 
     public JSONObject getQueryResults (List<String> urls) {
-        if (urls.size()>ApplicationConfig.MAXIMUM_URL_ONCE){
+        if (urls.size()>ApplicationConfig.MAXIMUM_URL_ONCE_BC_QUERY){
             LOG.warn("Too many urls in a http post request!");
         }
         JSONObject jsonRes = null;
diff --git a/src/main/java/cn/ac/iie/utils/FileUtils.java b/src/main/java/cn/ac/iie/utils/FileUtils.java
index 90df21b..dc68f11 100644
--- a/src/main/java/cn/ac/iie/utils/FileUtils.java
+++ b/src/main/java/cn/ac/iie/utils/FileUtils.java
@@ -1,11 +1,13 @@
 package cn.ac.iie.utils;
 
+import cn.ac.iie.config.ApplicationConfig;
 import org.apache.log4j.Logger;
 
 import java.io.*;
-import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Collectors;
 
 /**
  * @author yjy
@@ -52,6 +54,22 @@ public class FileUtils {
         return list;
     }
 
+    public static List<String> getBatchFqdnReadIn(BufferedReader bufferedReader, int batchSize){
+        List<String> list = new ArrayList<>();
+        String lineTxt;
+        try{
+            while ((lineTxt = bufferedReader.readLine()) != null && list.size()<batchSize)
+            {
+                if (!lineTxt.equals("")) {
+                    list.add(lineTxt.trim());
+                }
+            }
+        } catch (IOException e){
+            e.printStackTrace();
+        }
+        return list;
+    }
+
     public static void createFile(File filePath, String fileName){
         try {
             File file = new File(filePath.toString() + "/" + fileName);
@@ -119,4 +137,37 @@ public class FileUtils {
         outStream.close();
     }
 
+    public static void readerClose(BufferedReader bufferedReader,  InputStreamReader inputStreamReader) throws IOException {
+        assert inputStreamReader != null;
+        bufferedReader.close();
+        inputStreamReader.close();
+    }
+
+    //执行cmd命令，获取返回结果
+    public static String execCMD(String command) {
+        StringBuilder sb =new StringBuilder();
+        try {
+            Process process=Runtime.getRuntime().exec(command);
+            BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(process.getInputStream()));
+            String line;
+            while((line=bufferedReader.readLine())!=null)
+            {
+                sb.append(line+"\n");
+            }
+        } catch (Exception e) {
+            return e.toString();
+        }
+        return sb.toString();
+    }
+
+    public static Long getFileLineNum(File file){
+        Long num = 0L;
+        if (!file.exists()){
+            LOG.error("File not exist: " + file.toString());
+        } else {
+            String res = FileUtils.execCMD("wc -l " + file.toString());
+            num = Long.parseLong(res.trim().split(" ")[0]);
+        }
+        return num;
+    }
 }
diff --git a/src/main/java/cn/ac/iie/utils/LogUtils.java b/src/main/java/cn/ac/iie/utils/LogUtils.java
index 8d38b1c..dd8b426 100644
--- a/src/main/java/cn/ac/iie/utils/LogUtils.java
+++ b/src/main/java/cn/ac/iie/utils/LogUtils.java
@@ -1,7 +1,8 @@
 package cn.ac.iie.utils;
 
 import cn.ac.iie.config.ApplicationConfig;
-import java.io.*;
+
+import java.io.File;
 
 /**
  * @author yjy
diff --git a/src/main/java/cn/ac/iie/utils/TimeUtils.java b/src/main/java/cn/ac/iie/utils/TimeUtils.java
index eaf07b4..1a2a4f1 100644
--- a/src/main/java/cn/ac/iie/utils/TimeUtils.java
+++ b/src/main/java/cn/ac/iie/utils/TimeUtils.java
@@ -1,6 +1,7 @@
 package cn.ac.iie.utils;
 
 import cn.ac.iie.config.ApplicationConfig;
+
 import java.util.Calendar;
 import java.util.Date;
 
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index c9987b5..d21b6f4 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -27,18 +27,26 @@ update.schedule.day = 7
 database = web_sketch
 table = fqdn_profile_via_brightcloud
 
+# offline读取批处理量
+offline.readin.batch = 1000
+
 # bc api单次查询url长度限制 API最高限制
-maximum.url.once = 100
+maximum.url.once.bc.query = 100
 
 # log
 # 打印进度日志的查询条数
 log.offline.number = 10000
 log.bc.query.report.file = /home/WebSKT/Data/bright_cloud_query_count.csv
 
+
+
+########################
+### for test ###########
+########################
 ## 离线导入指定目录
-#offline.import.path = /Users/joy/work/iie/project/cyber_narrator/APP/WebSketch/QueryAgentV1/files/import_file
+#offline.import.path = /Users/joy/work/iie/project/cyber_narrator/APP/WebSketch/QueryAgentV3/files/import_file
 ## 离线指定查询结果保存目录
-#offline.output.path = /Users/joy/work/iie/project/cyber_narrator/APP/WebSketch/QueryAgentV1/files/output_file
+#offline.output.path = /Users/joy/work/iie/project/cyber_narrator/APP/WebSketch/QueryAgentV3/files/output_file
 ## 服务调用统计结果
 #log.bc.query.report.file = /Users/joy/work/iie/project/cyber_narrator/App/WebSketch/LOG_IMPORTANT/bright_cloud_query_count.csv
 
diff --git a/src/main/resources/brightcloud.properties b/src/main/resources/brightcloud.properties
index e787ac3..21036f0 100644
--- a/src/main/resources/brightcloud.properties
+++ b/src/main/resources/brightcloud.properties
@@ -16,8 +16,6 @@ bc.api.reputation = 1
 bc.api.xml = 0
 
 bc.cateinfo.filepath = /home/WebSKT/Data/categoryinfo.json
-# for test
-#bc.cateinfo.filepath = /Users/joy/work/iie/project/cyber_narrator/App/WebSketch/QueryAgentV1/src/main/resources/categoryinfo.json
 
 
 
diff --git a/src/main/resources/log4j.properties b/src/main/resources/log4j.properties
index 405080d..179f8f0 100644
--- a/src/main/resources/log4j.properties
+++ b/src/main/resources/log4j.properties
@@ -2,7 +2,7 @@
 ########################## logger ##############################
 
 ### 设置###
-log4j.rootLogger = debug,E,stdout
+log4j.rootLogger = info,E,stdout
 
 log4j.appender.stdout = org.apache.log4j.ConsoleAppender
 log4j.appender.stdout.Target = System.out
@@ -20,4 +20,4 @@ log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ]
 #########################
 #### for test ###########
 #########################
-#log4j.appender.E.File =/Users/joy/work/iie/project/cyber_narrator/App/WebSketch/QueryAgentV1/logs/run.log
\ No newline at end of file
+#log4j.appender.E.File =/Users/joy/work/iie/project/cyber_narrator/App/WebSketch/QueryAgentV3/logs/run.log
\ No newline at end of file