db-data-to-csv/src/test/java/com/vcarecity/cvs/service/impl/MySQLResultHandlerServiceIm...

package com.vcarecity.cvs.service.impl;

import java.util.Arrays;

class MySQLResultHandlerServiceImplTest {

    @org.junit.jupiter.api.Test
    void resultHandler() {
        String[] h = new String[3];
        StringBuffer sb = new StringBuffer();

        Object[] rows = new Object[]{1, "test", null};

        for (int i = 0; i < rows.length; i++) {
            Object row = rows[i];
            if (row instanceof String) {
                sb.append("'").append(row).append("'");
            } else {
                sb.append(row);
            }

            if (i != rows.length - 1) {
                sb.append(",");
            }
        }


        System.out.println(sb.toString());


        Arrays.fill(h, "%s");
        final String join = String.join(",", h);


        final String value = String.format(join, rows);

        System.out.println(join);
        System.out.println(value);
    }
}