由于項(xiàng)目使用的js很多，為了提高系統(tǒng)效率，將js做壓縮處理。
成功的對(duì)多個(gè)js進(jìn)行壓縮，必須經(jīng)歷下面兩步。
1.合并多個(gè)js成為一個(gè)js.
2.將和并過后的js進(jìn)行壓縮處理。
使用的ant配置主要有：

復(fù)制代碼代碼如下:

<property  name="root" value="WebRoot"></property>
 <property  name="js" value="${root}/js"></property>
 <property  name="map_function_js" value="${js}/mapfunc"></property>
 <property name="lib" value="lib"/>
 <property  name="build" value="build"></property>
 <property  name="war" value="war"></property>
 <property  name="war.info" value="${war}/WEB-INF"></property>
 <property  name="war.lib" value="${war.info}/lib"></property>
 <property  name="war.classes" value="${war.info}/classes"></property>
 <property  name="project.name" value="zjmap"></property>
 <property name="charset" value="utf-8"/>
 <property name="src" value="src"/>
 <target name="創(chuàng)建build目錄">
   <mkdir dir="${build}"/>
  </target>

復(fù)制代碼代碼如下:

 <!-- 將多個(gè)js合并成為一個(gè)js -->
  <target name="合并js" depends="創(chuàng)建build目錄">
          <concat destfile="${build}/mapfuncall.js" encoding="${charset}" outputencoding="${charset}">
           <path path="${map_function_js}/DC.js" />
        <path path="${map_function_js}/stringUtil.js" />
           <path path="${map_function_js}/LOCALDC.js" />
           <path path="${map_function_js}/screen.js" />
           <path path="${map_function_js}/wfsQuery.js" />
           <path path="${map_function_js}/Map.js" />
           <path path="${map_function_js}/Query.js" /> 
           <path path="${map_function_js}/ClassificationQuery.js" /> 
           <path path="${map_function_js}/BusQuery.js" /> 
           <path path="${map_function_js}/RouteQuery.js" />
           <path path="${map_function_js}/cursorPosition.js" />
           <path path="${map_function_js}/bufferAnalysis.js" />
           <path path="${map_function_js}/divCtrl.js" />
            <path path="${map_function_js}/mark.js" />
           <path path="${map_function_js}/overlayAnalysis.js" />
           <path path="${map_function_js}/BuildQuery.js" />
           <path path="${map_function_js}/PopShow.js" />
           <path path="${map_function_js}/correct.js" />
           <path path="${map_function_js}/style_result.js" />
            <path path="${map_function_js}/style_ui.js" />
           <path path="${map_function_js}/Catalog.js" />
           <path path="${map_function_js}/scenario.js" />
           <path path="${map_function_js}/wfs.js" />
           <path path="${map_function_js}/Uuid.js" />
           <path path="${map_function_js}/Gps.js" />
           <path path="${map_function_js}/typhoon.js" />
           <path path="${map_function_js}/Monitor.js" />
           <path path="${map_function_js}/RainWater.js" />
           <path path="${map_function_js}/Approval.js" />
           <path path="${map_function_js}/statistics.js" />
           <path path="${map_function_js}/statisticsNew.js" />
           <path path="${map_function_js}/OTileCacheCustom.js" />
           <path path="${map_function_js}/BQTool.js" />
           <path path="${map_function_js}/CityPositionQuery.js" />
           <path path="${map_function_js}/IFieldService.js" />
           <path path="${map_function_js}/SpecialQuery.js" />
          </concat>
          <replaceregexp match="@DEBUG@" replace="" flags="g" byline="true" file="${build}/mapfuncall.js" encoding="${charset}" />
  </target>
 <!-- 使用雅虎UI進(jìn)行js壓縮 -->
 <target name="開始?jí)嚎s" depends="合并js">
          <!-- 使用雅虎UI壓縮 mapfuncall.js -->
         <antcall target="壓縮mapfuncall.js"></antcall>
           <!-- 使用雅虎UI壓縮 dataedit.js -->
         <antcall target="壓縮dataedit.js"></antcall>
          <!-- 使用雅虎UI壓縮 ISuggest.js -->
         <antcall target="壓縮ISuggest.js"></antcall>
         <!-- 復(fù)制壓縮后的js文件 -->
         <antcall target="復(fù)制壓縮js文件"></antcall>
 </target>
 <target name="壓縮mapfuncall.js">
   <java jar="${lib}/yui/yuicompressor-2.4.6.jar" fork="true">
                <arg line="--type js --charset utf-8 ${map_function_js}/mapfuncall.js -o ${build}/mapfuncall-min.js"/>           
   </java>
 </target>
 <target name="壓縮dataedit.js">
  <java jar="${lib}/yui/yuicompressor-2.4.6.jar" fork="true">
            <arg line="--type js --charset utf-8 ${map_function_js}/dataedit.js -o ${build}/dataedit-min.js"/>           
  </java>
 </target>
 <target name="壓縮ISuggest.js">
   <java jar="${lib}/yui/yuicompressor-2.4.6.jar" fork="true">
       <arg line="--type js --charset utf-8 ${map_function_js}/ISuggest.js -o ${build}/ISuggest-min.js"/>           
   </java>
 </target>
     <target name="清除build目錄" depends="開始?jí)嚎s">
          <delete dir="${build}"/>
  </target>
 <target name="復(fù)制壓縮js文件">
      <copy todir="${map_function_js}">
         <fileset dir="${build}">
                   <include name="**.js"/>
            </fileset>
      </copy>
 </target>