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business-tools

在开发中积攒下来的业务工具类,方便快速编写业务。

author 996.icu

安装

maven

<dependency>
    <groupId>com.github.hwywl</groupId>
    <artifactId>business-tools</artifactId>
    <version>1.0.3-RELEASE</version>
</dependency>

Gradle

implementation 'com.github.hwywl:business-tools:1.0.3-RELEASE'

一个增强parquet文件方便读写的工具类

通过反射自动生成MessageType,自动拼装数据结构,遵循简单的原则,你给我数据我给你parquet文件。 目前支持的数据类型如下:

  • int、Integer
  • long、Long
  • float、Float
  • double、Double
  • String

使用

可以查看github中的源码,不看也行,很简单的,使用如下:

public class ParquetUtilTest {
  String filePath = "F:\\a.parquet";

  /**
   * 写入一个数据到parquet文件
   *
   * @throws IOException
   * @throws CustomException
   */
  @Test
  public void ParquetWriteTest() throws IOException, CustomException, IntrospectionException {
    TestModel model = getModel();
    ParquetUtil.writerParquet(filePath, model);
  }

  /**
   * 写入多个数据到parquet文件
   *
   * @throws IOException
   * @throws CustomException
   */
  @Test
  public void ParquetWriteListTest() throws IOException, CustomException, IntrospectionException {
    List<TestModel> models = getModels();
    ParquetUtil.writerParquet(filePath, models);
  }

  /**
   * 开放原始API,可以用于非一次性写入
   *
   * @throws IOException
   * @throws CustomException
   * @throws IntrospectionException
   */
  @Test
  public void ParquetWriteGroupListTest() throws IOException, CustomException, IntrospectionException {
    ParquetWriter<Group> writer = ParquetUtil.getParquetWriter(filePath, TestModel.class);
    Group group = ParquetUtil.getGroup(getModel());
    writer.write(group);

    // close写出文件
    writer.close();
  }

  /**
   * 将parquet文件转为对象集合
   *
   * @throws IOException
   */
  @Test
  public void ParquetReadBeanTest() throws IOException {
    List<TestModel> models = ParquetUtil.readParquetBean(filePath, TestModel.class);
    System.out.println(models);
  }

  /**
   * 将parquet文件转为Map集合
   *
   * @throws IOException
   */
  @Test
  public void ParquetReadMapTest() throws IOException {
    List<Map<String, Object>> maps = ParquetUtil.readParquetMap(filePath);
    System.out.println(maps);
  }

  /**
   * 将parquet文件转为对象集合,并只拿2条数据
   *
   * @throws IOException
   */
  @Test
  public void ParquetReadBeanMaxLineTest() throws IOException {
    List<TestModel> models = ParquetUtil.readParquetBean(filePath, 2, TestModel.class);
    System.out.println(models);
  }

  /**
   * 测试数据
   *
   * @return
   */
  private TestModel getModel() {
    return new TestModel(2, 3, 6L, "校花", 10);
  }

  /**
   * 测试数据
   *
   * @return
   */
  private List<TestModel> getModels() {
    List<TestModel> arrayList = new ArrayList<>();

    for (int i = 0; i < 10; i++) {
      arrayList.add(new TestModel(2, 3, 6L, "校花", 10));
    }

    return arrayList;
  }
}

HTML表格生成,可用于邮件发送或者直接展示前端

示例1:

public class HtmlTest {
    @Test
    public void htmlReadTest() {
        String template = EmailTemplateUtil.htmlMapTemplate("测试", getModels());
        System.out.println(template);
    }

    /**
     * 测试数据
     *
     * @return 测试数据
     */
    private List<Map<String, Object>> getModels() {
        List<Map<String, Object>> arrayList = new ArrayList<>();

        for (int i = 0; i < 10; i++) {
            Map<String, Object> map = new LinkedHashMap<>();
            map.put("校花", "张花");
            map.put("美女", "李花");
            map.put("小萝莉", "茉莉花");
            map.put("御姐", null);
            map.put("班花", 111);

            arrayList.add(map);
        }

        return arrayList;
    }
}

示例2:

public class HtmlTest {
    @Test
    public void htmlReadBeanTest() {
        String template = EmailTemplateUtil.htmlBeanTemplate("测试", getBeanModels());
        System.out.println(template);
    }

    /**
     * 测试数据
     *
     * @return
     */
    private List<HtmlModel> getBeanModels() {
        List<HtmlModel> arrayList = new ArrayList<>();

        for (int i = 0; i < 10; i++) {
            arrayList.add(new HtmlModel(2, 3, 6L, "校花", 10));
        }

        return arrayList;
    }
}

HtmlModel类

public class HtmlModel {
    @HtmlAnnotation("游戏id")
    int app_id;
    @HtmlAnnotation("VIP等级")
    Integer svip_level;
    @HtmlAnnotation("VIP剩余时间")
    Long svip_remain;
    @HtmlAnnotation("游戏名称")
    String name;
    @HtmlAnnotation("充值金额")
    double money;
}

一个简单封装的多线程并行工具类

在我们业务中很多场景为了速度是需要多线程并行运算的,最后再把各个结果集合起来返回。 示例:

public class ParallelThreadTest {
    /**
     * 测试并发执行运算
     */
    @Test
    public void parallelTest() throws InterruptedException {
        List<HtmlModel> list = new ArrayList<>();

        // 模拟四个线程并发执行,最后得到一个结果集
        Runnable runnable1 = () -> list.addAll(getBeanModels());
        Runnable runnable2 = () -> list.addAll(getBeanModels());
        Runnable runnable3 = () -> list.addAll(getBeanModels());
        Runnable runnable4 = () -> list.addAll(getBeanModels());

        List<Runnable> tasks = Arrays.asList(runnable1, runnable2, runnable3, runnable4);

        int secs = ParallelThread.parallelThreadTask(tasks);

        // 这句代码在正式环境中没有意义,这里是为了防止主线程结束
        // Junit不支持多线程
        Thread.sleep(3000);

        System.out.println("线程耗时:" + secs + "毫秒");
        System.out.println(list);
    }

    /**
     * 测试数据
     *
     * @return
     */
    private List<HtmlModel> getBeanModels() {
        List<HtmlModel> arrayList = new ArrayList<>();

        for (int i = 0; i < 2; i++) {
            arrayList.add(new HtmlModel(2, 3, 6L, "校花", 10));
        }

        return arrayList;
    }
}

1.0.3-RELEASE 版本更新

  1. 增加一个简单的多线程并发执行工具
  2. 升级开源工具类

1.0.2-RELEASE 版本更新

  1. 开放parquet文件写入的原始API
  2. 修复写入parquet文件乱序问题

1.0.1-RELEASE 版本更新

  1. 增加parquet文件的读写
  2. 增加html表格的生成。

感谢

  • 工具还有不足之处,请大家Issues ヾ(๑╹◡╹)ノ"
  • 我那么可爱你不点个star吗 φ(>ω<*)

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