如何使用apache poi从java中的docx中删除包含数据的表格和段落 [英] How to remove tables and paragraphs containing data from docx in java using apache poi

问题描述

我有一个单词模板，它有多个相似的表格和一些与放在它们之前的表格相关联的段落.根据数据量，我填充了一些表格，其他表格不需要，所以有段落.

I have a word template that has multiple similar tables and some paragraphs associated to those tables placed just before them. Depending on the amount of data, I populate some tables and others are not required, so are there paragraphs.

我需要删除这些表格和段落.正如您在图像中看到的，我需要删除表 2 及其段落 Table Parahgraph

I need to remove these tables and paragraphs. As you can see in the image, I need to remove Table 2 and its paragraph Table Parahgraph

请帮我怎么做.我尝试使用 document.removeBodyElement(pos) ，但没有帮助.

Please help me how to do it. I tried using document.removeBodyElement(pos) , but it does not help.

int startIndex = 0;
int endIndex = 0;
startIndex = doc.getPosOfTable(doc.getTables().get(0));
startIndex++;
endIndex = doc.getPosOfTable(doc.getTables().get(1));
System.out.println("startIndex "+ startIndex);
System.out.println("endIndex "+ endIndex);

for(int i=startIndex; i<=endIndex; i++){
    doc.removeBodyElement(i);
}

推荐答案

问题在于使用 removeBodyElement 移动其余元素并重新计算它们的索引.这意味着，如果您想删除元素 #4 到 #6(包括两个表格之间的空段落)，那么在删除元素 #4(空行)之后，这是您的第二个 TABLE(而不是其标题段落)将成为元素#5，等等.基本上，这个循环通过两个元素(i+=2而不是i++)跳转，从而删除只删了你想要的一半，甚至删除了你不想删除的东西.

The problem is that using removeBodyElement shifts the rest of the elements and recalculates their indices. It means, that if you want to delete elements #4 to #6 (empty paragraph between two tables is included), then after deleting the element #4 (empty line), it is your second TABLE (and not its title paragraph) that will become the element #5, etc. Basically, this loop becomes jumping by two elements (i+=2 instead of i++), thus deleting only half of what you want, and even deleting something you don't want to delete.

因此，您只需颠倒循环顺序:

for ( int i = endIndex; i >= startIndex; i-- ) {
    System.out.println( "removing bodyElement #" + i );
    document.removeBodyElement( i );
}

我用模板测试过，和你的例子类似，效果很好！希望有帮助.

I've tested it with a template, similar to your example, it works fine! Hope it helps.

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