一个例子：
<?xml version="1.0" encoding="UTF-8"?>
<project name="junit" default="checkstyle">
<property name="dir.src" location="src"/>
<property name="dir.lib" location="WebContent/WEB-INF/lib"/>
<property name="checkstyle.path" location="checkstyle"/>
<property name="checkstyle.xml" location="${dir.src}/checkstyle_checks.xml"/>
<property name="checkstyle.xsl" location="${dir.src}/checkstyle-frames.xsl"/>
<path id="checkstyle.classpath">
<fileset dir="${dir.lib}">
<exclude name="junit-4.10.jar"/>
<exclude name="commons-lang-2.4.jar"/>
</fileset>
</path>
<target name="checkstyle-init">
<taskdef name="checkstyle" classname="com.puppycrawl.tools.checkstyle.CheckStyleTask" classpathref="checkstyle.classpath"/>
<mkdir dir="${checkstyle.path}"/>
<delete includeemptydirs="true">
<fileset dir="${checkstyle.path}">
<include name="**/*"/>
</fileset>
</delete>
</target>
<target name="checkstyle-run" depends="checkstyle-init">
<checkstyle
failOnViolation="false"
failureProperty="checkstyle.failed"
config="${dir.src}/sun_checks.xml">
<fileset dir="${dir.src}" includes="**/*.java"/>
<formatter type="plain"/>
<formatter type="xml" toFile="${checkstyle.path}/checkstyle_report.xml"/>
</checkstyle>
</target>
<target name="checkstyle-report" depends="checkstyle-run" if="checkstyle.failed">
<xslt style="${checkstyle.xsl}"
in="${checkstyle.path}/checkstyle_report.xml"
out="${checkstyle.path}/checkstyle_report.html">
</xslt>
<fail>
Checkstyle reported style failures.See ${checkstyle.path}/checkstyle_report.html
</fail>
</target>
<target name="checkstyle" depends="checkstyle-report"/>
</project>
输出：
E:\workspace\Diary>ant -f build_checkstyle.xml
Buildfile: E:\workspace\Diary\build_checkstyle.xml
checkstyle-init:
checkstyle-run:
[checkstyle] Running Checkstyle 5.6 on 2 files
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:0: Missing pack
age-info.java file.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:9: Missing a Ja
vadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:11:1: File cont
ains tab characters (this is the first instance).
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:11:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:13:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:14:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:15:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:16:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:18:9: Method 'g
etId' is not designed for extension - needs to be abstract, final or empty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:18:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:22:9: Method 's
etId' is not designed for extension - needs to be abstract, final or empty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:22:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:22:27: Paramete
r id should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:22:34: 'id' hid
es a field.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:26:9: Method 'g
etName' is not designed for extension - needs to be abstract, final or empty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:26:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:30:9: Method 's
etName' is not designed for extension - needs to be abstract, final or empty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:30:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:30:29: Paramete
r name should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:30:36: 'name' h
ides a field.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:34:9: Method 'g
etCreateTime' is not designed for extension - needs to be abstract, final or emp
ty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:34:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:38:9: Method 's
etCreateTime' is not designed for extension - needs to be abstract, final or emp
ty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:38:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:38:35: Paramete
r createTime should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:38:40: 'createT
ime' hides a field.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:42:9: Method 'g
etContent' is not designed for extension - needs to be abstract, final or empty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:42:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:46:9: Method 's
etContent' is not designed for extension - needs to be abstract, final or empty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:46:9: Missing a
Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:46:32: Paramete
r content should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:46:39: 'content
' hides a field.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:50:9: Method 't
oString' is not designed for extension - needs to be abstract, final or empty.
[checkstyle] E:\workspace\Diary\src\diary\core\entity\Diary.java:52: Line is lon
ger than 80 characters (found 145).
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:0: Miss
ing package-info.java file.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:7: Miss
ing a Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:9:1: Fi
le contains tab characters (this is the first instance).
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:9:9: Me
thod 'list' is not designed for extension - needs to be abstract, final or empty
.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:9:9: Mi
ssing a Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:13:9: M
ethod 'get' is not designed for extension - needs to be abstract, final or empty
.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:13:9: M
issing a Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:13:26:
Parameter name should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:17:9: M
ethod 'save' is not designed for extension - needs to be abstract, final or empt
y.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:17:9: M
issing a Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:17:25:
Parameter diary should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:21:9: M
ethod 'update' is not designed for extension - needs to be abstract, final or em
pty.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:21:9: M
issing a Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:21:27:
Parameter diary should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:25:9: M
ethod 'delete' is not designed for extension - needs to be abstract, final or em
pty.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:25:9: M
issing a Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:25:27:
Parameter id should be final.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:29:9: M
ethod 'delete' is not designed for extension - needs to be abstract, final or em
pty.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:29:9: M
issing a Javadoc comment.
[checkstyle] E:\workspace\Diary\src\diary\core\service\DiaryService.java:29:27:
Parameter diary should be final.
checkstyle-report:
[xslt] Processing E:\workspace\Diary\checkstyle\checkstyle_report.xml to E:
\workspace\Diary\checkstyle\checkstyle_report.html
[xslt] Loading stylesheet E:\workspace\Diary\src\checkstyle-frames.xsl
BUILD FAILED
E:\workspace\Diary\build_checkstyle.xml:43: Checkstyle reported style failures.S
ee E:\workspace\Diary\checkstyle/checkstyle_report.html
Total time: 1 second
测试中用到的项目在附件中，里面包含了运行后的输出内容，项目很简单。
Checkstyle官网关于如何在Ant中使用Checkstyle
Description
This task runs Checkstyle over specified Java files. The task has been tested using ANT 1.5. The latest version of checkstyle can be found athttp://checkstyle.sourceforge.net/. This task is included in the checkstyle distribution.
Installation
The easiest way is to include checkstyle-5.6-all.jar in the classpath. This contains all the classes required to run Checkstyle. Alternatively, you must include the compile third party dependencies listed in Project Dependencies in the classpath.
To use the task in a build file, you will need the following taskdef declaration:
<taskdef resource="checkstyletask.properties"
classpath="/path/to/checkstyle-5.6-all.jar"/>
Or, assuming that Checkstyle is in the global classpath (not recommended), then you will need the following taskdef declaration:
<taskdef resource="checkstyletask.properties"/>
Or if you use Ant 1.6 and later and assuming that Checkstyle is in the library search path, then you may use antlib feature of Ant (seehttp://ant.apache.org/manual/Types/antlib.html for more details). For example:
<project name="foo" ...
xmlns:cs="antlib:com.puppycrawl.tools.checkstyle">
...
<cs:checkstyle>
...
</cs:checkstyle>
...
</project>
Parameters
| Attribute | Description | Required |
| file | File to run checkstyle on. | One of either fileor at least one nested filesetelement |
| config | Specifies the location of the file that defines the configuration modules. The location can either be a filesystem location, or a name passed to the ClassLoader.getResource() method. See here for a description of how to define a configuration. |
Exactly one of config or configURL |
| configURL | Specifies a URL that defines the configuration modules. See here for a description of how to define a configuration. | Exactly one of config or configURL |
| properties | Specifies a file that contains properties for expanded property values of the configuration. Ant properties (like ${basedir}) and nested property elements override the properties in this file. | No |
| failOnViolation | Specifies whether the build will continue even if there are violations. Defaults to "true". | No |
| failureProperty | The name of a property to set in the event of a violation. | No |
| maxErrors | The maximum number of errors that are tolerated before breaking the build or setting the failure property. Defaults to "0". | No |
| maxWarnings | The maximum number of warnings that are tolerated before breaking the build or setting the failure property. Defaults to "2147483647", i.e. Integer.MAX_VALUE. | No |
| classpath | The classpath to use when looking up classes. Defaults to the current classpath. | No |
| classpathref | The classpath to use when looking up classes, given as a reference to a path defined elsewhere. | No |
| omitIgnoredModules | For efficiency, Checkstyle does not invoke modules with a configured severity of "ignore" (since their output would be ignored anyway). A small number of modules may choose to log above their configured severity level and so always need to be invoked. This settings specifies that behaviour. Defaults to "true". | No |
Note that the packageNamesFile parameter has been dropped for Checkstyle 5.0, because of significant changes regarding package name file handling. Seefor details.
Nested Elements
This task supports the nested elements <fileset>, <classpath>, <formatter>, and <property>.
The parameters for the <formatter> element are:
| Attribute | Description | Required |
| type | The type of output to generate. The valid values are:
Defaults to "plain". |
No |
| toFile | The file to write output to. Defaults to standard output. Note, there is no way to explicitly specify standard output. | No |
| useFile | Boolean that determines whether output should be sent to a file. Default is true. | No |
A <property> element provides a property for expanded property values of the configuration. The parameters for the <property> element are:
| Attribute | Description | Required |
| key | The key for the property. |
Yes |
| value | The value of the property specified as a string. | Either value or file |
| file | The value of the property specified as a file. This is great for specifying file names relative to the ANT build file. | Either value or file |
Examples
Run checkstyle with configuration file docs/sun_checks.xml on a single file
<checkstyle config="docs/sun_checks.xml" file="Check.java"/>
Run checkstyle on a set of Java files using site-wide configuration and an expanded property value
<checkstyle config="/path/to/site/sun_checks.xml">
<fileset dir="src/checkstyle" includes="**/*.java"/>
<!-- Location of cache-file. Something that is project specific -->
<property key="checkstyle.cache.file" file="target/cachefile"/>
</checkstyle>
Run checkstyle on a set of files and output messages to standard output in plain format, and a file in XML format
<checkstyle config="docs/sun_checks.xml">
<fileset dir="src/checkstyle" includes="**/*.java"/>
<formatter type="plain"/>
<formatter type="xml" toFile="build/checkstyle_errors.xml"/>
</checkstyle>
Run checkstyle with configuration file docs/sun_checks.xml on a file and provide a package names file
<checkstyle config="docs/sun_checks.xml"
packageNamesFile="myPackageNames.xml"
file="Check.java"/>
Run checkstyle in an automated build and send an email report if style violations are detected
<target name="checkstyle"
description="Generates a report of code convention violations.">
<checkstyle config="docs/sun_checks.xml"
failureProperty="checkstyle.failure"
failOnViolation="false">
<formatter type="xml" tofile="checkstyle_report.xml"/>
<fileset dir="src" includes="**/*.java"/>
</checkstyle>
<style in="checkstyle_report.xml" out="checkstyle_report.html" style="checkstyle.xsl"/>
</target>
<!-- run this target as part of automated build -->
<target name="checkstyle-nightly"
depends="checkstyle"
if="checkstyle.failure"
description="Sends email if checkstyle detected code conventions violations.">
<!-- use your own server and email addresses below. See Ant documentation for details -->
<mail from="[email protected]"
tolist="[email protected],[email protected]"
mailhost="mailbox.some.domain"
subject="Checkstyle violation(s) in project ${ant.project.name}"
files="checkstyle_report.html"/>
</target>