Java net.sf.jasperreports.engine.JRException：找不到字节数据
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net.sf.jasperreports.engine.JRException: Byte data not found
提问by Marcin Erbel
I'm trying to pass to template of a jasper reports string location. So I'm passing key of a parameter inside template and value. Everything was working when I had image inside my project, but I would like to have it on the other place. Is there any way to read parameters from, for instance properties file? I don't know why this sollution is not working:
我正在尝试传递给 jasper 报告字符串位置的模板。所以我在模板和值中传递参数的键。当我的项目中有图像时，一切正常，但我想把它放在另一个地方。有没有办法从例如属性文件中读取参数？我不知道为什么这个解决方案不起作用：
My image:
我的形象：
<parameter name="imagesDir" class="java.lang.String" isForPrompting="false"/>
...
...
<image isLazy="true">
<reportElement key="image-1" style="PHLabel" x="0" y="0" width="160" height="33"/>
<imageExpression class="java.lang.String"><![CDATA["$P{imagesDir}"+"logo.bmp"]]></imageExpression>
</image>
error:
错误：
Error during exporting report statement_account_10 to PDF.
net.sf.jasperreports.engine.JRException: Byte data not found at :
((java.lang.String)parameter_imagesDir.getValue())logo.bmp
采纳答案by Marcin Erbel
Ok i found it... Should be:
好的，我找到了……应该是：
<image isLazy="true">
<reportElement key="image-1" style="PHLabel" x="0" y="0" width="160" height="33"/>
<imageExpression class="java.lang.String"><![CDATA[$P{imagesDir}+"logo.bmp"]]></imageExpression>
</image>
回答by Cristian Arteaga
I had this issue and in my case the problem was the path of the image.
我遇到了这个问题，就我而言，问题是图像的路径。
Initially I had something like:
最初我有类似的东西：
<imageExpression><![CDATA["logo.bmp"]]></imageExpression>
Then I replaced it by:
然后我将其替换为：
<imageExpression><![CDATA["/home/reports/logo.bmp"]]></imageExpression>
Obviously it worked because I was using the absolute path (Which is not a good approach), Then I changed the static absolute path with a parameter for the images folder.
显然它有效，因为我使用的是绝对路径（这不是一个好方法），然后我使用图像文件夹的参数更改了静态绝对路径。
