??? 以前試過在Ant下使用Proguard，感覺挺簡單的，使用Maven后，明顯復雜多了，復雜不在Proguard，而在proguard-maven-plugin。
??? 配置如下：
<plugin>
????<groupId>com.pyx4me</groupId>
????<artifactId>proguard-maven-plugin</artifactId>
????<executions>
????????<execution>
????????????<phase>package</phase>
????????????<goals>
????????????????<goal>proguard</goal>
????????????</goals>
????????</execution>
????</executions>
????<configuration>
????????<obfuscate>true</obfuscate>
????????<proguardInclude>${basedir}/proguard.pro</proguardInclude>
????????<libs>
????????????<lib>${java.home}/lib/rt.jar</lib>
????????????<lib>${java.home}/lib/jsse.jar</lib>
????????????<lib>${java.home}/lib/jce.jar</lib>
????????</libs>
????</configuration>
</plugin>
出現異常：
[proguard]?Obfuscating
[proguard]?Printing?mapping?to?[D:\cces\linker\target\proguard_map.txt]
[proguard]?Preverifying
[proguard]?Unexpected?error?while?performing?partial?evaluation:
[proguard]???Class?=?[net/sicross/tms/service/cces/SearchFlightOrderDetailService]
[proguard]???Method?=?[getRouteDetail(Ljava/util/Map;)Ljava/util/List;]
[proguard]???Exception?=?[java.lang.IllegalArgumentException]?(Can't?find?common?super?class?of?[java/util/List]?and?[java/lang/StringBuffer])
[proguard]?Unexpected?error?while?preverifying:
[proguard]???Class??=?[net/sicross/tms/service/cces/SearchFlightOrderDetailService]?[proguard]???Method?=?[getRouteDetail(Ljava/util/Map;)Ljava/util/List;]
[proguard]???Exception?=?[java.lang.IllegalArgumentException]?(Can't?find?common?super?class?of?[java/util/List]?and?[java/lang/StringBuffer])
[proguard]?java.lang.IllegalArgumentException:?Can't?find?common?super?class?of?[java/util/List]?and?[java/lang/StringBuffer]
[proguard]?????at?proguard.evaluation.value.ReferenceValue.generalize(ReferenceValue.java:330)
[proguard]?????at?proguard.evaluation.value.ReferenceValue.generalize(ReferenceValue.java:467)
[proguard]?????at?proguard.evaluation.Variables.generalize(Variables.java:137)
[proguard]?????at?proguard.evaluation.TracedVariables.generalize(TracedVariables.java:140)
[proguard]?????at?proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlock(PartialEvaluator.java:637)
??? 根據異常，先是懷疑有什么jre的包沒有導入，增加了另外幾個也不行。在懷疑是jdk編譯版本的問題，因為輸出目標jdk版本是1.6的，在proguard-maven-plugin的configuration中增加下面的配置也沒有。
<options>
????<option>-target?1.6</option>
</options>
??? 最后，將maven的target=1.6改為1.5后，異常消失。
<plugin>
????<groupId>org.apache.maven.plugins</groupId>
????<version>2.0.2</version>
????<artifactId>maven-compiler-plugin</artifactId>
????<configuration>
????????<source>1.5</source>
????????<target>1.6</target>
????????<encoding>UTF-8</encoding>
????</configuration>
</plugin>
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