feat: 导出

nladmin-system/README.md

@@ -1 +1,3 @@
 # 诺力开发平台
+## 主从复制（Master-Slave Replication）
+<img src="./doc/img.png">

nladmin-system/nlsso-server/pom.xml

@@ -32,6 +32,12 @@
     </properties>
 
     <dependencies>
+        <!-- 主从复制 -->
+        <dependency>
+            <groupId>org.apache.shardingsphere</groupId>
+            <artifactId>shardingsphere-jdbc-core-spring-boot-starter</artifactId>
+            <version>5.1.1</version>
+        </dependency>
         <dependency>
             <groupId>com.dameng</groupId>
             <artifactId>DmJdbcDriver18</artifactId>
@@ -76,11 +82,11 @@
             <version>11.2.0.4</version>
         </dependency>
         <!-- dynamic-datasource -->
-        <dependency>
-            <groupId>com.baomidou</groupId>
-            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
-            <version>4.1.3</version>
-        </dependency>
+<!--        <dependency>-->
+<!--            <groupId>com.baomidou</groupId>-->
+<!--            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>-->
+<!--            <version>4.1.3</version>-->
+<!--        </dependency>-->
 <!--        https://onew.me/logback/2018/09/17/logback_win.html-->
         <dependency>
             <groupId>org.fusesource.jansi</groupId>

nladmin-system/nlsso-server/src/main/java/org/nl/common/utils/FileUtil.java

@@ -19,12 +19,18 @@ import cn.hutool.core.io.IoUtil;
 import cn.hutool.core.util.IdUtil;
 import cn.hutool.poi.excel.BigExcelWriter;
 import cn.hutool.poi.excel.ExcelUtil;
+import com.google.common.collect.Lists;
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.util.IOUtils;
 import org.apache.poi.xssf.streaming.SXSSFSheet;
+import org.apache.poi.xssf.streaming.SXSSFWorkbook;
 import org.nl.common.exception.BadRequestException;
 import org.nl.config.language.LangProcess;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.util.CollectionUtils;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.servlet.ServletOutputStream;
@@ -34,9 +40,7 @@ import java.io.*;
 import java.security.MessageDigest;
 import java.text.DecimalFormat;
 import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 /**
  * File工具类，扩展 hutool 工具包
@@ -45,6 +49,7 @@ import java.util.Map;
  * @date 2018-12-27
  */
 public class FileUtil extends cn.hutool.core.io.FileUtil {
+    private static final Integer BATCH_WRITE_EXCEL_ROW_AMOUNT = 500;
 
     private static final Logger log = LoggerFactory.getLogger(FileUtil.class);
 
@@ -227,6 +232,86 @@ public class FileUtil extends cn.hutool.core.io.FileUtil {
         IoUtil.close(out);
     }
 
+    /**
+     * 流导出
+     * @param list
+     * @param response
+     * @throws IOException
+     */
+    public void downloadExcelIO(List<Map<String, String>> list, String[] columnExcelNameArr, HttpServletResponse response) {
+        List<Map<String, String>> lastRestDataList = list;
+        int blockNum = 0;
+        List<String> allFileLocations = new ArrayList<>();
+        ServletOutputStream out = null;
+        try {
+            boolean allFinish = false;
+            while (!allFinish) {
+                int thisFileRowNumber = 1;
+                SXSSFWorkbook wb = null;
+                try {
+                    // 流式写入EXCEL，只保留少数行(比如50行)数据在内存，防止内存溢出
+                    wb = new SXSSFWorkbook(BATCH_WRITE_EXCEL_ROW_AMOUNT);
+                    Sheet sh = wb.createSheet();
+                    Row titleRow = sh.createRow(0);
+                    for (int cellNum = 0; cellNum < columnExcelNameArr.length; cellNum++) {
+                        Cell cell = titleRow.createCell(cellNum);
+                        cell.setCellValue(columnExcelNameArr[cellNum]);
+                    }
+                    if (!CollectionUtils.isEmpty(lastRestDataList)) {
+                        for (int i = 0; i < lastRestDataList.size(); i++) {
+                            Row dataRow = sh.createRow(thisFileRowNumber);
+                            Map<String, String> columnMap = lastRestDataList.get(i);
+                            for (int cellNum = 0; cellNum < columnExcelNameArr.length; cellNum++) {
+                                Cell cell = dataRow.createCell(cellNum);
+                                String valueStr = columnMap.get(columnExcelNameArr[cellNum]);
+                                cell.setCellValue(valueStr);
+                            }
+                            thisFileRowNumber++;
+                        }
+                    }
+
+                    String localFilePath = SYS_TEM_DIR + IdUtil.fastSimpleUUID() + blockNum + ".xlsx";
+                    allFileLocations.add(localFilePath);
+                    response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
+                    response.setHeader("Content-Disposition", "attachment;filename=" + localFilePath);
+                    out = response.getOutputStream();
+                    wb.write(out);
+                    // 必须清理流式写入Excel生成的临时文件
+                    wb.dispose();
+                    allFinish = true;
+                } catch (Exception ex) {
+                    log.warn(ex.getMessage());
+                    throw new BadRequestException(ex.getMessage());
+                } finally {
+                    if (out != null) {
+                        try {
+                            out.flush();
+                            out.close();
+                        } catch (IOException e) {
+                            log.warn(e.getMessage());
+                        }
+                    }
+                    if (wb != null) {
+                        try {
+                            wb.dispose();
+                        } catch (Exception e) {
+                            log.warn(e.getMessage());
+                        }
+                    }
+                }
+            }
+        } finally {
+            if (out != null) {
+                try {
+                    out.flush();
+                    out.close();
+                } catch (IOException e) {
+                    log.warn(e.getMessage());
+                }
+            }
+        }
+    }
+
     public static String getFileType(String type) {
         String documents = "txt doc pdf ppt pps xlsx xls docx";
         String music = "mp3 wav wma mpa ram ra aac aif m4a";
@@ -343,5 +428,4 @@ public class FileUtil extends cn.hutool.core.io.FileUtil {
     public static String getMd5(File file) {
         return getMd5(getByte(file));
     }
-
 }

nladmin-system/nlsso-server/src/main/resources/config/application-dev.yml

@@ -9,6 +9,12 @@ nl:
       username: root
       password: 12356
       database: nl-platform
+    slave:
+      ip: 127.0.0.1
+      port: 3306
+      username: root
+      password: 12356
+      database: nl_platform
     redis:
       ip: 127.0.0.1
       port: 6379

nladmin-system/nlsso-server/src/main/resources/config/application.yml

@@ -12,62 +12,102 @@ spring:
     exclude: com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceAutoConfigure
   messages:
     basename: language/login/login,language/error/error,language/buss/buss,language/task/task
-  datasource:
-    druid:
-      initial-size: 5 #初始化时建立物理连接的个数
-      min-idle: 15 #最小连接池数量
-      maxActive: 30 #最大连接池数量
-      maxWait: 3000 #获取连接时最大等待时间，单位毫秒
-      #申请连接的时候检测，如果空闲时间大于timeBetweenEvictionRunsMillis，执行validationQuery检测连接是否有效。
-      test-while-idle: true
-      time-between-eviction-runs-millis: 300000 #既作为检测的间隔时间又作为test-while-idle执行的依据
-      min-evictable-idle-time-millis: 900000 #销毁线程时检测当前连接的最后活动时间和当前时间差大于该值时，关闭当前连接
-      #用来检测连接是否有效的sql
-      #mysql中为 select 'x'
-      #oracle中为 select 1 from dual
-      validation-query: SELECT 'x'
-      test-on-borrow: true #申请连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
-      test-on-return: false #归还连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
-      exception-sorter: true #当数据库抛出不可恢复的异常时,抛弃该连接
-      pool-prepared-statements: true #是否缓存preparedStatement,mysql5.5+建议开启
-      max-pool-prepared-statement-per-connection-size: 20 #当值大于20时poolPreparedStatements会自动修改为true
-      #通过connectProperties属性来打开mergeSql功能；慢SQL记录
-      connection-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
-#      use-global-data-source-stat: true #合并多个DruidDataSource的监控数据
-      #filters通过别名的方式配置扩展插件，常用的插件有：
-      #监控统计用的filter:stat 日志用的filter:log4j 防御sql注入的filter:wall
-      filter:
-        stat:
+  shardingsphere:
+    datasource:
+      names: master,slave
+      master:
+        type: com.alibaba.druid.pool.DruidDataSource
+        driver-class-name: com.mysql.cj.jdbc.Driver
+        # 初始连接数
+        initial-size: 20
+        # 最小连接数
+        min-idle: 30
+        # 最大连接数
+        max-active: 300
+        # 是否自动回收超时连接
+        socket-timeout: 10
+        query-time-out: 7
+        transaction-query-timeout: 30
+        # 获取连接超时时间
+        max-wait: 4000
+        # 连接有效性检测时间
+        time-between-eviction-runs-millis: 60000
+        # 连接在池中最小生存的时间
+        min-evictable-idle-time-millis: 300000
+        # 连接在池中最大生存的时间
+        max-evictable-idle-time-millis: 900000
+        # 指明连接是否被空闲连接回收器(如果有)进行检验.如果检测失败,则连接将被从池中去除
+        test-while-idle: true
+        # 指明是否在从池中取出连接前进行检验,如果检验失败, 则从池中去除连接并尝试取出另一个
+        test-on-borrow: true
+        # 是否在归还到池中前进行检验
+        test-on-return: false
+        # 检测连接是否有效
+        validation-query: select 1
+        # 配置监控统计
+        webStatFilter:
           enabled: true
-          # 记录慢SQL
-          log-slow-sql: true
-          slow-sql-millis: 1000
-          merge-sql: true
-        wall:
-          config:
-            multi-statement-allow: true
-      #设置访问druid监控页面的拦截路径及账号和密码,默认没有
-      stat-view-servlet:
-        enabled: true
-        url-pattern: /druid/*
-        login-username: admin
-        login-password: admin
-    dynamic:
-      primary: mysql
-      datasource:
-        mysql:
-          driver-class-name: net.sf.log4jdbc.sql.jdbcapi.DriverSpy
-          url: jdbc:log4jdbc:mysql://${DB_HOST:${nl.config.mysql.ip}}:${DB_PORT:${nl.config.mysql.port}}/${DB_NAME:${nl.config.mysql.database}}?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false&useOldAliasMetadataBehavior=true
-          username: ${DB_USER:${nl.config.mysql.username}}
-          password: ${DB_PWD:${nl.config.mysql.password}}
-          type: com.alibaba.druid.pool.DruidDataSource
-      druid:
+        stat-view-servlet:
+          enabled: true
+          url-pattern: /druid/*
+          reset-enable: false
         filters:
           DruidFilter,stat
-        initial-size: 5 #初始化时建立物理连接的个数
-        min-idle: 15 #最小连接池数量
-        maxActive: 30 #最大连接池数量
-        maxWait: 3000 #获取连接时最大等待时间，单位毫秒
+        url: jdbc:mysql://${DB_HOST:${nl.config.mysql.ip}}:${DB_PORT:${nl.config.mysql.port}}/${DB_NAME:${nl.config.mysql.database}}?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false&useOldAliasMetadataBehavior=true
+        username: ${DB_USER:${nl.config.mysql.username}}
+        password: ${DB_PWD:${nl.config.mysql.password}}
+      slave:
+        type: com.alibaba.druid.pool.DruidDataSource
+        driver-class-name: com.mysql.cj.jdbc.Driver
+        # 初始连接数
+        initial-size: 20
+        # 最小连接数
+        min-idle: 30
+        # 最大连接数
+        max-active: 300
+        # 是否自动回收超时连接
+        socket-timeout: 10
+        query-time-out: 7
+        transaction-query-timeout: 30
+        # 获取连接超时时间
+        max-wait: 4000
+        # 连接有效性检测时间
+        time-between-eviction-runs-millis: 60000
+        # 连接在池中最小生存的时间
+        min-evictable-idle-time-millis: 300000
+        # 连接在池中最大生存的时间
+        max-evictable-idle-time-millis: 900000
+        # 指明连接是否被空闲连接回收器(如果有)进行检验.如果检测失败,则连接将被从池中去除
+        test-while-idle: true
+        # 指明是否在从池中取出连接前进行检验,如果检验失败, 则从池中去除连接并尝试取出另一个
+        test-on-borrow: true
+        # 是否在归还到池中前进行检验
+        test-on-return: false
+        # 检测连接是否有效
+        validation-query: select 1
+        # 配置监控统计
+        webStatFilter:
+          enabled: true
+        stat-view-servlet:
+          enabled: true
+          url-pattern: /druid/*
+          reset-enable: false
+        filters:
+          DruidFilter,stat
+        url: jdbc:mysql://${DB_HOST:${nl.config.slave.ip}}:${DB_PORT:${nl.config.slave.port}}/${DB_NAME:${nl.config.slave.database}}?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false&useOldAliasMetadataBehavior=true
+        username: ${DB_USER:${nl.config.slave.username}}
+        password: ${DB_PWD:${nl.config.slave.password}}
+    rules:
+      readwrite-splitting:
+        data-sources:
+          db:
+            type: Static
+            props:
+              #接口有事务，读写分离不生效，默认全部使用主库
+              write-data-source-name: master
+              read-data-source-names: slave
+            #负载均衡算法名称
+            load-balancer-name: round-robin
   flyway:
     #开启
     enabled: false