静态代码自动扫描p3c的使用

/**
 * don't Use System.currentTimeMillis() to get the current millisecond. user SystemClock.now().
 *
 *
 * @author Allen Jiang
 */
public class AvoidCallSystemCurrentTimeMillisRule extends AbstractXpathRule {
    private static final String XPATH = "//PrimaryPrefix/Name[@Image='System.currentTimeMillis']";
    public AvoidCallSystemCurrentTimeMillisRule() {
        setXPath(XPATH);
    }
    @Override
    public void addViolation(Object data, Node node, String arg) {
        ViolationUtils.addViolationWithPrecisePosition(this, node, data,
                I18nResources.getMessage("java.extend.AvoidCallSystemCurrentTimeMillisRule.violation.msg"));
    }
}

<entry key="java.extend.AvoidCallSystemCurrentTimeMillisRule.rule.msg">
        <![CDATA[获取当前毫秒数：SystemClock.now(); 而不是System.currentTimeMillis();]]>
    </entry>
    <entry key="java.extend.AvoidCallSystemCurrentTimeMillisRule.rule.desc">
        <![CDATA[
说明：如果想获取更加精确的纳秒级时间值，用SystemClock.nanoTime。在JDK8中，针对统计时间等场景，推荐使用Instant类。
        ]]>
    </entry>
    <entry key="java.extend.AvoidCallSystemCurrentTimeMillisRule.violation.msg">
        <![CDATA[请使用SystemClock.now()代替System.currentTimeMillis()]]>
    </entry>

<entry key="java.extend.AvoidCallSystemCurrentTimeMillisRule.rule.msg">
        <![CDATA[Use SystemClock.now() to get the current millisecond. Do not use System.currentTimeMillis(). ]]>
    </entry>
    <entry key="java.extend.AvoidCallSystemCurrentTimeMillisRule.rule.desc">
        <![CDATA[
Note: In order to get a more accurate time, use SystemClock.nanoTime(). In JDK8, use Instant class to deal with situations like time statistics.
        ]]>
    </entry>
    <entry key="java.extend.AvoidCallSystemCurrentTimeMillisRule.violation.msg">
        <![CDATA[please use SystemClock.now() instead of System.currentTimeMillis()]]>
    </entry>

<?xml version="1.0"?>
<ruleset name="AlibabaJavaExtends" xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
    <description>AlibabaJavaExtends</description>
    <rule name="AvoidCallSystemCurrentTimeMillisRule" language="java"
          message="java.extend.AvoidCallSystemCurrentTimeMillisRule.rule.msg"
          class="com.alibaba.p3c.pmd.lang.java.rule.extend.AvoidCallSystemCurrentTimeMillisRule">
        <description>java.extend.AvoidCallSystemCurrentTimeMillisRule.rule.desc</description>
        <priority>1</priority>
        <example>
            <![CDATA[
    public class TimeMillisDemo {
        public static void main(String args[]) {
            // Positive example:
           long a = SystemClock.now();
            // Negative example:
              long b = System.currentTimeMillis();
            System.out.println(a);
            System.out.println(b);
        }
    }
]]>
        </example>
    </rule>
</ruleset>

java -server -jar $PWD/p3c-pmd-2.1.1.jar -d  ../../../proj/yorha-game/src/main -f summaryhtml -cache cache.log -shortnames -R rulesets/java/ali-exception.xml,rulesets/java/ali-oop.xml,rulesets/java/ali-flowcontrol.xml,rulesets/java/ali-naming.xml,rulesets/java/ali-extend.xml -r /home/cnc_build/pmd/report.html  -encoding UTF-8 > p3c.log 2>&1 &

Usage: pmd [options]
  Options:
    -failOnViolation, --failOnViolation
      By default PMD exits with status 4 if violations are found. Disable this
      option with '-failOnViolation false' to exit with 0 instead and just
      write the report.
      Default: true
    -auxclasspath
      Specifies the classpath for libraries used by the source code. This is
      used by the type resolution. Alternatively, a 'file://' URL to a text
      file containing path elements on consecutive lines can be specified.
    -benchmark, -b
      Benchmark mode - output a benchmark report upon completion; default to
      System.err.
      Default: false
    -cache
      Specify the location of the cache file for incremental analysis. This
      should be the full path to the file, including the desired file name
      (not just the parent directory). If the file doesnt exist, it will be
      created on the first run. The file will be overwritten on each run with
      the most up-to-date rule violations.
    -dir, -d
      Root directory for sources.
    -encoding, -e
      Specifies the character set encoding of the source code files PMD is
      reading (i.e., UTF-8).
      Default: UTF-8
    -filelist
      Path to a file containing a list of files to analyze.
    -format, -f
      Report format type.
      Default: text
    -help, -h, -H
      Display help on usage.
    -ignorelist
      Path to a file containing a list of files to ignore.
    -language, -l
      Specify a language PMD should use.
    -minimumpriority, -min
      Rule priority threshold; rules with lower priority than configured here
      won.t be used. Valid values are integers between 1 and 5 (inclusive),
      with 5 being the lowest priority.
      Default: 5
    -no-cache
      Explicitly disable incremental analysis. The '-cache' option is ignored
      if this switch is present in the command line.
      Default: false
    -norulesetcompatibility
      Disable the ruleset compatibility filter. The filter is active by
      default and tries automatically 'fix' old ruleset files with old rule
      names
      Default: false
    -property, -P
      {name}={value}: Define a property for the report format.
      Default: []
    -reportfile, -r
      Sends report output to a file; default to System.out.
  * -rulesets, -R
      Comma separated list of ruleset names to use.
    -shortnames
      Prints shortened filenames in the report.
      Default: false
    -showsuppressed
      Report should show suppressed rule violations.
      Default: false
    -stress, -S
      Performs a stress test.
      Default: false
    -suppressmarker
      Specifies the string that marks a line which PMD should ignore; default
      is NOPMD.
      Default: NOPMD
    -threads, -t
      Sets the number of threads used by PMD.
      Default: 1
    -uri, -u
      Database URI for sources.
    -debug, -verbose, -D, -V
      Debug mode.
      Default: false
    -version, -v
      Specify version of a language PMD should use.