Ant 条件判断 if

转载自ant 条件判断 condition 


最近收到一个ticket,用ant写个build.xml,用到condition,作笔记如下: 
basic elements: istrue isfalse not and or xor available isset equals  filesmatch 
1、istrue isfalse:断言 真 假 
Ant代码  收藏代码
  1. <project name="testCondition">  
  2.     <target name="test">  
  3.         <condition property="scondition">  
  4.             <istrue value="true"/>  
  5.         </condition>  
  6.         <antcall target="isTrue">  
  7.         </antcall>  
  8.         <antcall target="isFalse">  
  9.         </antcall>  
  10.     </target>  
  11.     <target name="isTrue" if="scondition">  
  12.         <echo>is ture</echo>  
  13.     </target>  
  14.     <target name="isFalse" unless="scondition">  
  15.         <echo>is false</echo>  
  16.     </target>  
  17. </project>  


2、逻辑运算 
2.1、not 逻辑非 
Ant代码  收藏代码
  1. <project name="testCondition">  
  2.     <target name="test">  
  3.         <condition property="scondition">  
  4.             <not>  
  5.                 <istrue value="true"/>  
  6.             </not>  
  7.         </condition>  
  8.         <antcall target="isTrue">  
  9.         </antcall>  
  10.         <antcall target="isFalse">  
  11.         </antcall>  
  12.     </target>  
  13.     <target name="isTrue" if="scondition">  
  14.         <echo>is ture</echo>  
  15.     </target>  
  16.     <target name="isFalse" unless="scondition">  
  17.         <echo>is false</echo>  
  18.     </target>  
  19. </project>  

2.2、and 逻辑与 
Ant代码  收藏代码
  1. <project name="testCondition">  
  2.     <target name="test">  
  3.         <condition property="scondition">  
  4.             <and>  
  5.                 <istrue value="true"/>  
  6.                 <istrue value="false"/>  
  7.             </and>  
  8.         </condition>  
  9.         <antcall target="isTrue">  
  10.         </antcall>  
  11.         <antcall target="isFalse">  
  12.         </antcall>  
  13.     </target>  
  14.     <target name="isTrue" if="scondition">  
  15.         <echo>is ture</echo>  
  16.     </target>  
  17.     <target name="isFalse" unless="scondition">  
  18.         <echo>is false</echo>  
  19.     </target>  
  20. </project>  

2.3、or 逻辑或 xor异或 (语法上与and类似) 
3、available 是否可用 
Ant代码  收藏代码
  1. <project name="testCondition">  
  2.     <path id="all.test.classes">  
  3.         <pathelement location="bin"/>  
  4.     </path>  
  5.     <target name="test">  
  6.         <condition property="scondition">  
  7.             <!--在指定的classpath路径下是否存在资源 TestTest.class-->  
  8.             <available resource="TestTest.class">  
  9.                 <classpath refid="all.test.classes" />  
  10.             </available>  
  11.         </condition>  
  12.         <antcall target="isTrue">  
  13.         </antcall>  
  14.         <antcall target="isFalse">  
  15.         </antcall>  
  16.     </target>  
  17.     <target name="isTrue" if="scondition">  
  18.         <echo>is ture</echo>  
  19.     </target>  
  20.     <target name="isFalse" unless="scondition">  
  21.         <echo>is false</echo>  
  22.     </target>  
  23. </project>  

4、isset 指定属性是否存在 
Ant代码  收藏代码
  1. <project name="testCondition">  
  2.     <!--属性也可以通过ant参数-D来设置-->  
  3.     <property name="name" value="this is name" />  
  4.     <target name="test">  
  5.         <condition property="scondition">  
  6.             <!--如果属性name不存在则返回false-->  
  7.             <isset property="name" />  
  8.         </condition>  
  9.         <antcall target="isTrue">  
  10.         </antcall>  
  11.         <antcall target="isFalse">  
  12.         </antcall>  
  13.     </target>  
  14.     <target name="isTrue" if="scondition">  
  15.         <echo>is ture</echo>  
  16.     </target>  
  17.     <target name="isFalse" unless="scondition">  
  18.         <echo>is false</echo>  
  19.     </target>  
  20. </project>  

5、equals 是否相等 
Ant代码  收藏代码
  1. <project name="testCondition">  
  2.     <!--属性也可以通过ant参数-D来设置-->  
  3.     <property name="name" value="this is name" />  
  4.     <target name="test">  
  5.         <condition property="scondition">  
  6.             <!--如果arg1的值与arg2的值相等返回true,否则为false-->  
  7.             <equals arg1="${name}" arg2="this is name" />  
  8.         </condition>  
  9.         <antcall target="isTrue">  
  10.         </antcall>  
  11.         <antcall target="isFalse">  
  12.         </antcall>  
  13.     </target>  
  14.     <target name="isTrue" if="scondition">  
  15.         <echo>is ture</echo>  
  16.     </target>  
  17.     <target name="isFalse" unless="scondition">  
  18.         <echo>is false</echo>  
  19.     </target>  
  20. </project>  

6、filesmatch 比较文件 
Ant代码  收藏代码
  1. <project name="testCondition">  
  2.     <target name="test">  
  3.         <condition property="scondition">  
  4.             <!--如果file1所代表的文件与file2所代表的文件相等返回true,否则为false-->  
  5.             <filesmatch file1="testfile1.txt" file2="testfile2.txt" />  
  6.         </condition>  
  7.         <antcall target="isTrue">  
  8.         </antcall>  
  9.         <antcall target="isFalse">  
  10.         </antcall>  
  11.     </target>  
  12.     <target name="isTrue" if="scondition">  
  13.         <echo>is ture</echo>  
  14.     </target>  
  15.     <target name="isFalse" unless="scondition">  
  16.         <echo>is false</echo>  
  17.     </target>  
  18. </project>  
原文地址:https://www.cnblogs.com/balaamwe/p/2383345.html