如何基于二维数组创建表？ [英] How to create a table based on a two-dimensional array?

问题描述

private List<List<String>> tableOverallList;

我在此列表中有一系列列表。它在每个列表中包含8个值。我需要将它放在创建的表中。我想有2列8列。对于第一行，我有这个列表。

i have a series of list in this list. it contains 8 values in each list. i need to place it in the table created. i would like to have 2 Rows with 8 columns. for the 1st Row i have this list.

String[] tableTitleList = {" Title", " (Re)set", " Obs", " Mean", " Std.Dev", " Min", " Max", "    Unit"};
List<String> tabTitleList = Arrays.asList(tableTitleList);

帮我将第一个值列表放在List tableOverallList中在第二排。我将尝试管理列表的其余部分。

help me to place the 1st list of values inside the List tableOverallList in the 2nd Row. i will try managing with the rest of the list.

        PdfPTable table = new PdfPTable(3); // 3 columns.

        PdfPCell cell1 = new PdfPCell(new Paragraph("Cell 1"));
        PdfPCell cell2 = new PdfPCell(new Paragraph("Cell 2"));
        PdfPCell cell3 = new PdfPCell(new Paragraph("Cell 3"));
        PdfPCell cell3 = new PdfPCell(new Paragraph("Cell 4"));
        PdfPCell cell3 = new PdfPCell(new Paragraph("Cell 5"));
        PdfPCell cell3 = new PdfPCell(new Paragraph("Cell 6"));
        PdfPCell cell3 = new PdfPCell(new Paragraph("Cell 7"));
        PdfPCell cell3 = new PdfPCell(new Paragraph("Cell 8"));

        table.addCell(cell1);
        table.addCell(cell2);
        table.addCell(cell3);
        table.addCell(cell4);
        table.addCell(cell5);
        table.addCell(cell6); 
        table.addCell(cell7);
        table.addCell(cell8);

        document.add(table);

推荐答案

这真的很容易。所以你有一个嵌套列表中的数据。例如：

That's really easy. So you have data in a nested list. For instance:

public List<List<String>> getData() {
    List<List<String>> data = new ArrayList<List<String>>();
    String[] tableTitleList = {" Title", " (Re)set", " Obs", " Mean", " Std.Dev", " Min", " Max", "Unit"};
    data.add(Arrays.asList(tableTitleList));
    for (int i = 0; i < 10; ) {
        List<String> dataLine = new ArrayList<String>();
        i++;
        for (int j = 0; j < tableTitleList.length; j++) {
            dataLine.add(tableTitleList[j] + " " + i);
        }
        data.add(dataLine);
    }
    return data;
}

这将返回一组数据，其中第一条记录是标题行，以下10行包含模拟数据。假设这是您拥有的数据。

This will return a set of data where the first record is a title row and the following 10 rows contain mock-up data. It is assumed that this is data you have.

现在，当您想要在表格中呈现此数据时，您可以这样做：

Now when you want to render this data in a table, you do this:

PdfPTable table = new PdfPTable(8);
table.setWidthPercentage(100);
List<List<String>> dataset = getData();
for (List<String> record : dataset) {
    for (String field : record) {
        table.addCell(field);
    }
}
document.add(table);

结果将如下所示：

你可以找到这里有完整的源代码： ArrayToTable ，这就是生成的PDF： array_to_table.pdf

You can find the full source code here: ArrayToTable and this is the resulting PDF: array_to_table.pdf

如果你只想要2行，标题行和数据行，更改以下行：

If you only want 2 rows, a title row and a data row, change the following line:

    for (int i = 0; i < 10; ) {

进入：

    for (int i = 0; i < 2; ) {

我提供了一个更通用的解决方案，因为拥有通用代码更优雅。

I've provided a more generic solution because it's more elegant to have generic code.

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