JasperReports：隐藏帧A中的帧B，如果帧B中的字段为空或为空 [英] JasperReports: Hide frame B within frame A, if one the fields inside frame B is null or is empty

问题描述

我在jasper报告中遇到有关设计文档模板的问题。这就像一份简历。

I am having a problem in jasper reports regarding designing a document template. It's like a resume.

我有这个文件：

年龄[静态文本] | [某些字段A]

Age [static text] | [some field A]

性别[静态文本] | [某些字段B]

Gender [static text] | [some field B]

位置[静态文本] | [某些字段C]

Location [static text] | [some field C]

我的jasper报告的当前结构如下：

The current structure of my jasper reports is this:

我有这个框架A ，有垂直布局。
模板中的每一行（年龄，性别，位置）对应于我创建第1,2和3帧的帧。

I have this frame A, which has a vertical layout. Every row in the template (age, gender, location) corresponds to the frame I've created frames 1, 2 and 3.

说，第1帧具有水平布局，其中'Age [静态文本]'和'[some field A]'作为其内容。适用于第2帧和第3帧。

Say, frame 1 has horizontal layout with 'Age [static text]' and '[some field A]' as its contents. The applies to frames 2 and 3.

第1帧的位置类型相对于顶部是固定的，而第2帧和第3帧是浮动的。

Frame 1 has a position type of fix relative to top, while frames 2 and 3 are in float.

如果[某个字段] B为空或空，我希望隐藏行性别并向上移动。我该怎么做？

I want the row gender be hidden and be moved upwards if [some field] B is null or empty. How can I do that?

我尝试过删除行空白但它只适用于包含多个字段的帧内。基本上，我希望隐藏第1帧，如果[某个字段A]为空或空，则将帧2和3向上移动。

I've tried working on Remove Line When Blank but it only works inside a frame which has several fields in it. Basically, I want frame 1 to be hidden and have frames 2 and 3 be moved upwards if [some field A] is null or empty.

我希望最快的响应。

推荐答案

为了达到理想的结果集：

To achieve you desired result set:

1. 在内的 reportElement 上的positionType =Float框架（需要根据其他元素移动。

1. positionType="Float" on the reportElement inside the frame (it needs to move on the basis of the other elements.

isRemoveLineWhenBlank =true，如果根据 printWhenExpression

在 printWhenExpression es。<$中包括检查所有框架内的字段c $ c> new Boolean（$ F {field1} == null || $ F {field2} == null || $ F {field3} == null）

Include the check for all the fields inside the frame in the printWhenExpression es. new Boolean($F{field1}==null || $F{field2}==null || $F{field3}==null)

示例

<frame>
   <reportElement positionType="Float" x="13" y="12" width="287" height="35" isRemoveLineWhenBlank="true" uuid="ee6707a4-bcb4-402b-95c0-6f4613747d2f">
      <printWhenExpression><![CDATA[new Boolean($F{field1}==null || $F{field2}==null || $F{field3}==null)]]></printWhenExpression>
       .. your textFields ...
   </reportElement>
</frame> 

注意：兼容jasper report 3和jdk 1.4我用过新的布尔值（...）这在jasper报告5,6

NOTE: for compatibility with jasper report 3 and jdk 1.4 I have used new Boolean(...) this is not necessary in jasper report 5,6

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