blocks|key|603099|text|添加|type|unstyled|depth|inlineStyleRanges|entityRanges|data|603100|<dependency>
++++<groupId>commons-io</groupId>
++++++<artifactId>commons-io</artifactId>
++++<version>1.4</version>
++</dependency>|code-block|syntax|javascript|603101|敬你一杯|603102|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Add
<pre><code>&lt;dependency&gt;
 &lt;groupId&gt;commons-io&lt;/groupId&gt;
 &lt;artifactId&gt;commons-io&lt;/artifactId&gt;
 &lt;version&gt;1.4&lt;/version&gt;
 &lt;/dependency&gt;
</code></pre>
to you pom

blocks|key|603130|text|将依赖项更改为|type|unstyled|depth|inlineStyleRanges|entityRanges|data|603131|<dependency>
++++++++<groupId>org.apache.poi</groupId>
++++++++<artifactId>poi-ooxml</artifactId>
++++++++<version>4.1.2</version>
</dependency>|code-block|syntax|javascript|603132|我也使用了5.2.0版本，并得到了相同的错误，并修改了它。|603133|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Change the dependency to
<pre><code>&lt;dependency&gt;
 &lt;groupId&gt;org.apache.poi&lt;/groupId&gt;
 &lt;artifactId&gt;poi-ooxml&lt;/artifactId&gt;
 &lt;version&gt;4.1.2&lt;/version&gt;
&lt;/dependency&gt;
</code></pre>
I used the version 5.2.0 as well and was getting the same error and changing that fixed it.

blocks|key|603154|text|当我将excel读入XSSFWorkbook时，它提示错误消息，即XSSFWorkbook最终将poi的版本从5.2.3降到5.2.2。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|603155|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

When I read excel to XSSFWorkbook, it prompt error message that &quot;commons.io.output.UnsynchronizedByteArrayOutputStream&quot; finally fixed it by downgrad the version of poi from 5.2.3 to 5.2.2

blocks|key|915802|text|对我来说很管用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|915803|++++<dependency>
++++++++<groupId>commons-io</groupId>
++++++++<artifactId>commons-io</artifactId>
++++++++<version>2.11.0</version>
++++</dependency>

++++<dependency>
++++++++<groupId>org.apache.poi</groupId>
++++++++<artifactId>poi</artifactId>
++++++++<version>5.2.2</version>
++++</dependency>

++++<dependency>
++++++++<groupId>org.apache.poi</groupId>
++++++++<artifactId>poi-ooxml</artifactId>
++++++++<version>5.2.2</version>
++++</dependency>|code-block|syntax|javascript|915804|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

It worked for me
<pre><code> &lt;dependency&gt;
 &lt;groupId&gt;commons-io&lt;/groupId&gt;
 &lt;artifactId&gt;commons-io&lt;/artifactId&gt;
 &lt;version&gt;2.11.0&lt;/version&gt;
 &lt;/dependency&gt;

 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.poi&lt;/groupId&gt;
 &lt;artifactId&gt;poi&lt;/artifactId&gt;
 &lt;version&gt;5.2.2&lt;/version&gt;
 &lt;/dependency&gt;

 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.poi&lt;/groupId&gt;
 &lt;artifactId&gt;poi-ooxml&lt;/artifactId&gt;
 &lt;version&gt;5.2.2&lt;/version&gt;
 &lt;/dependency&gt;
</code></pre>

blocks|key|415833|text|它通过消除这种依赖对我起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|415834|+<dependency>
++<groupId>commons-fileupload</groupId>
++<artifactId>commons-fileupload</artifactId>
++<version>1.4</version>
</dependency>|code-block|syntax|javascript|415835|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

It worked for me by removing this dependency
<pre><code> &lt;dependency&gt;
 &lt;groupId&gt;commons-fileupload&lt;/groupId&gt;
 &lt;artifactId&gt;commons-fileupload&lt;/artifactId&gt;
 &lt;version&gt;1.4&lt;/version&gt;
&lt;/dependency&gt;
</code></pre>

I'm trying to implement reading from .xls file. I have the following code:
<pre><code>FileInputStream file = null;
 Workbook workbook = null;
 try {
 file = new FileInputStream(System.getProperty(&quot;user.home&quot;) + &quot;/Downloads/&quot; + fileName);
 } catch (FileNotFoundException e) {
 e.printStackTrace();
 }

 if (fileName.endsWith(&quot;.xls&quot;)) {
 try {
 **workbook = new HSSFWorkbook(file);**
 } catch (IOException e) {
 e.printStackTrace();
 }
</code></pre>
This marked code line crashes.
I imported in pom.xml:
<pre><code>&lt;dependency&gt;
 &lt;groupId&gt;org.apache.poi&lt;/groupId&gt;
 &lt;artifactId&gt;poi&lt;/artifactId&gt;
 &lt;version&gt;5.2.0&lt;/version&gt;
 &lt;/dependency&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.apache.poi&lt;/groupId&gt;
 &lt;artifactId&gt;poi-ooxml&lt;/artifactId&gt;
 &lt;version&gt;5.2.0&lt;/version&gt;
 &lt;/dependency&gt;
</code></pre>
but I got the error:
Caused by: java.lang.ClassNotFoundException: org.apache.commons.io.output.UnsynchronizedByteArrayOutputStream
I would appreciate help on this.
Thanks.

java.lang.ClassNotFoundException: org.apache.commons.io.output.UnsynchronizedByteArrayOutputStream on using HSSFWorkbook

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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我正在尝试实现对.xls文件的读取。我有以下代码：FileInputStream file = null;    Workbook workbook = null;    try {        file = new FileInputStream(System.getProperty("user.home") + ...

问org.apache.commons.io.output.UnsynchronizedByteArrayOutputStream :关于使用HSSFWorkbook的java.lang.ClassNotFoundException
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问org.apache.commons.io.output.UnsynchronizedByteArrayOutputStream :关于使用HSSFWorkbook的java.lang.ClassNotFoundExceptionEN