blocks|key|346629|text|您可以尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|346630|jar+tvf+jarfile.jar+|code-block|syntax|javascript|346631|只有当您的jar是可执行的时，这才是有用的，即在清单中，您已经将某个类定义为主类|346632|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|$]]

You can try:

<pre><code>jar tvf jarfile.jar 
</code></pre>

This will be helpful only if your jar is executable i.e. in manifest you have defined some class as main class

blocks|key|128933|text|也许您正在寻找jar命令来获取终端中的类列表，|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|128934|$+jar+tf+~/.m2/repository/org/apache/spark/spark-assembly/1.2.0-SNAPSHOT/spark-assembly-1.2.0-SNAPSHOT-hadoop1.0.4.jar+
META-INF/
META-INF/MANIFEST.MF
org/
org/apache/
org/apache/spark/
org/apache/spark/unused/
org/apache/spark/unused/UnusedStubClass.class
META-INF/maven/
META-INF/maven/org.spark-project.spark/
META-INF/maven/org.spark-project.spark/unused/
META-INF/maven/org.spark-project.spark/unused/pom.xml
META-INF/maven/org.spark-project.spark/unused/pom.properties
META-INF/NOTICE|code-block|syntax|javascript|128935|哪里,|128936|-t++list+table+of+contents+for+archive
-f++specify+archive+file+name|128937|或者，只需grep上述结果即可仅查看.classes|128938|$+jar+tf+~/.m2/repository/org/apache/spark/spark-assembly/1.2.0-SNAPSHOT/spark-assembly-1.2.0-SNAPSHOT-hadoop1.0.4.jar+%7C+grep+.class
org/apache/spark/unused/UnusedStubClass.class|128939|要查看classes的数量，请执行以下操作|128940|jar+tvf+launcher/target/usergrid-launcher-1.0-SNAPSHOT.jar+%7C+grep+.class+%7C+wc+-l
61079|128941|entityMap^0|7|3|0|0|0|0|I|6|0|0|3|5|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|U|3|V|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|W|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|X|$]]

Maybe you are looking for <code>jar</code> command to get the list of classes in terminal, 

<pre><code>$ jar tf ~/.m2/repository/org/apache/spark/spark-assembly/1.2.0-SNAPSHOT/spark-assembly-1.2.0-SNAPSHOT-hadoop1.0.4.jar 
META-INF/
META-INF/MANIFEST.MF
org/
org/apache/
org/apache/spark/
org/apache/spark/unused/
org/apache/spark/unused/UnusedStubClass.class
META-INF/maven/
META-INF/maven/org.spark-project.spark/
META-INF/maven/org.spark-project.spark/unused/
META-INF/maven/org.spark-project.spark/unused/pom.xml
META-INF/maven/org.spark-project.spark/unused/pom.properties
META-INF/NOTICE
</code></pre>

where, 

<pre><code>-t list table of contents for archive
-f specify archive file name
</code></pre>

Or, just grep above result to see <code>.class</code>es only

<pre><code>$ jar tf ~/.m2/repository/org/apache/spark/spark-assembly/1.2.0-SNAPSHOT/spark-assembly-1.2.0-SNAPSHOT-hadoop1.0.4.jar | grep .class
org/apache/spark/unused/UnusedStubClass.class
</code></pre>

To see number of <code>class</code>es, 

<pre><code>jar tvf launcher/target/usergrid-launcher-1.0-SNAPSHOT.jar | grep .class | wc -l
61079
</code></pre>

blocks|key|128951|text|您可以尝试这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|128952|unzip+-v+/your/jar.jar|code-block|syntax|javascript|128953|只有当您的jar是可执行的时，这才是有用的，即在清单中，您已经将某个类定义为主类|128954|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|$]]

You can try this :

<pre><code>unzip -v /your/jar.jar
</code></pre>

This will be helpful only if your jar is executable i.e. in manifest you have defined some class as main class

blocks|key|346746|text|这是我使用的一种黑客方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|346747|您可以像这样使用java的自动完成功能：|offset|length|style|CODE|346748|java+-cp+path_to.jar+<Tab>|code-block|syntax|javascript|346749|这将为您提供可作为起始类传递的类的列表。当然，尝试使用没有主文件的主文件不会有任何效果，但是您可以看到java认为.jar内部的类被调用了什么。|346750|entityMap^0|0|8|4|0|0|1F|4|1L|4|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|P|$]]

This is a hack I'm using:

You can use <code>java</code>'s autocomplete like this:

<pre><code>java -cp path_to.jar &lt;Tab&gt;
</code></pre>

This will give you a list of classes available to pass as the starting class. Of course, trying to use one that has no main file will not do anything, but you can see what <code>java</code> thinks the classes inside the <code>.jar</code> are called.

blocks|key|346759|text|您可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|346760|jar+tf+example.jar|code-block|syntax|javascript|346761|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|$]]

You can use the 

<pre><code>jar tf example.jar
</code></pre>

blocks|key|346803|text|windows+cmd:如果所有的te+jar都在同一个目录中并执行下面的命令，这将会起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|346804|for+/r+%25i+in+(*)+do+(+jar+tvf+%25i+%7C+find+/I+"search_string")|code-block|syntax|javascript|346805|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|$]]

windows cmd: 
This would work if you have all te jars in the same directory and execute the below command 

<pre><code>for /r %i in (*) do ( jar tvf %i | find /I "search_string")
</code></pre>

blocks|key|346843|text|使用此bash脚本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|346844|#!/bin/bash

for+VARIABLE+in+*.jar
do
+++jar+-tf+$VARIABLE+%7Cgrep+"\.class"%7Cawk+-v+arch=$VARIABLE+'{print+arch+":"+$4}'%7Csed+'s/\//./g'%7Csed+'s/\.\.//g'%7Csed+'s/\.class//g'
done|code-block|syntax|javascript|346845|这将以以下形式列出目录中jars中的类：|346846|file1.jar:fullyqualifiedclassName
file1.jar:fullyqualifiedclassName
file1.jar:fullyqualifiedclassName
file1.jar:fullyqualifiedclassName
file2.jar:fullyqualifiedclassName
file2.jar:fullyqualifiedclassName
file2.jar:fullyqualifiedclassName|346847|示例输出：|346848|commons-io.jar:org.apache.commons.io.ByteOrderMark
commons-io.jar:org.apache.commons.io.Charsets
commons-io.jar:org.apache.commons.io.comparator.AbstractFileComparator
commons-io.jar:org.apache.commons.io.comparator.CompositeFileComparator
commons-io.jar:org.apache.commons.io.comparator.DefaultFileComparator
commons-io.jar:org.apache.commons.io.comparator.DirectoryFileComparator
commons-io.jar:org.apache.commons.io.comparator.ExtensionFileComparator
commons-io.jar:org.apache.commons.io.comparator.LastModifiedFileComparator|346849|在windows中，您可以使用powershell：|346850|Get-ChildItem+-File+-Filter+*.jar+%7C
ForEach-Object{
++++$filename+=+$_.Name
++++Write-Host+$filename
++++$classes+=+jar+-tf+$_.Name+%7CSelect-String+-Pattern+'.class'+-CaseSensitive+-SimpleMatch
++++ForEach($line+in+$classes)+{
+++++++write-host+$filename":"(($line+-replace+"\.class",+"")+-replace+"/",+".")
++++}
}|346851|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

Use this bash script:

<pre><code>#!/bin/bash

for VARIABLE in *.jar
do
 jar -tf $VARIABLE |grep "\.class"|awk -v arch=$VARIABLE '{print arch ":" $4}'|sed 's/\//./g'|sed 's/\.\.//g'|sed 's/\.class//g'
done
</code></pre>

this will list the classes inside jars in your directory in the form:

<pre><code>file1.jar:fullyqualifiedclassName
file1.jar:fullyqualifiedclassName
file1.jar:fullyqualifiedclassName
file1.jar:fullyqualifiedclassName
file2.jar:fullyqualifiedclassName
file2.jar:fullyqualifiedclassName
file2.jar:fullyqualifiedclassName
</code></pre>

Sample output:

<pre><code>commons-io.jar:org.apache.commons.io.ByteOrderMark
commons-io.jar:org.apache.commons.io.Charsets
commons-io.jar:org.apache.commons.io.comparator.AbstractFileComparator
commons-io.jar:org.apache.commons.io.comparator.CompositeFileComparator
commons-io.jar:org.apache.commons.io.comparator.DefaultFileComparator
commons-io.jar:org.apache.commons.io.comparator.DirectoryFileComparator
commons-io.jar:org.apache.commons.io.comparator.ExtensionFileComparator
commons-io.jar:org.apache.commons.io.comparator.LastModifiedFileComparator
</code></pre>

In windows you can use powershell:

<pre><code>Get-ChildItem -File -Filter *.jar |
ForEach-Object{
 $filename = $_.Name
 Write-Host $filename
 $classes = jar -tf $_.Name |Select-String -Pattern '.class' -CaseSensitive -SimpleMatch
 ForEach($line in $classes) {
 write-host $filename":"(($line -replace "\.class", "") -replace "/", ".")
 }
}
</code></pre>

blocks|key|346873|text|Mac+OS:在终端上：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|346874|vim+<your+jar+location>

after+jar+gets+opened,+press+/+and+pass+your+class+name+and+hit+enter|code-block|syntax|javascript|346875|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|$]]

Mac OS:
On Terminal:
<pre><code>vim &lt;your jar location&gt;

after jar gets opened, press / and pass your class name and hit enter
</code></pre>

I have a JAR file and I need to get the name of all classes inside this JAR file. How can I do that?

I googled it and saw something about JarFile or Java <code>ClassLoader</code> but I have no idea how to do it.

How to get names of classes inside a jar file?

Java

我有一个JAR文件，我需要获取这个JAR文件中所有类的名称。我该怎么做呢？我用谷歌搜索了一下，看到了一些关于JarFile或Java ClassLoader的东西，但我不知道该怎么做。

问如何获取jar文件中的类名？
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问如何获取jar文件中的类名？
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