DataFrame

POM配置

<dependency>
    <groupId>sh.joinery</groupId>
    <artifactId>joinery-dataframe</artifactId>
    <version>1.10</version>
</dependency>

实例代码

读取CSV文件

String csvFile="C:\\Users\\Administrator\\Downloads\\123.csv";
        DataFrame<Object> lists = DataFrame.readCsv(csvFile);
        DataFrame<Object> select = lists.select(new DataFrame.Predicate<Object>() {
            @Override
            public Boolean apply(List<Object> objects) {
//                System.out.println(objects.get(0).equals("1150-F5冷藏食品组"));
                return Integer.valueOf(objects.get(1).toString())==21301848;
            }
        });
        System.out.println(select);
        DataFrame<Object> merge = lists.join(select, DataFrame.JoinType.LEFT);
        System.out.println(merge.max());
        merge.writeCsv("C:\\Users\\Administrator\\Downloads\\1231.csv");