使用Apache Velocity生成HTML报表

1. pom.xml中加入jar依赖

   <dependency>      <groupId>org.apache.velocity</groupId>      <artifactId>velocity</artifactId>      <version> 1.7 </version> </dependency>

2. velocity语法规则见：https://github.com/putaoshu/jdf/blob/master/doc/core_vm.md
   
   

3. 定义自己的vm模板文件

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   < html > < head >      < h1  align  =  "center" >$title</ h1 >      < h6  align  =  "left" >$date</ h6 >      < h6  align  =  "left" >$author</ h6 > </ head > < body >      < hr  />      < p >          详细性能数据记录：      </ p >      < table  cellpadding = "2"  cellspacing = "1"  border = "1"  style = "empty-cells:show"  align  =  "center" >        < tr  >          < td  align = "center"  rowspan = "3"  colspan = "1" >性能分组          < td  align = "center"  rowspan = "3"  colspan = "1" >步骤          < td  align = "center"  rowspan = "3"  colspan = "1" >机型          < td  align = "center"  rowspan = "3"  colspan = "1" >ROM          < td  align = "center"  rowspan = "1"  colspan=$total>性能数据        </ tr >                  < tr >          < td  align = "center"  rowspan = "1"  colspan=$cpuCol>CPU          < td  align = "center"  rowspan = "1"  colspan=$memCol>内存          < td  align = "center"  rowspan = "1"  colspan=$baterryCol>耗电        </ tr >        < tr >        #foreach($cpu in $cpuList)          < td  align = "center"  rowspan = "1"  colspan = "1" >$cpu        #end                #foreach($mem in $memList)          < td  align = "center"  rowspan = "1"  colspan = "1" >$mem        #end                #foreach($battery in $batteryList)          < td  align = "center"  rowspan = "1"  colspan = "1" >$battery        #end       </ tr > </ body > < html >

4. java代码中定义相关类及生成方法

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   public  static  void  main(String[] args) {      String path = System.getProperty( "user.dir" );      Properties p =  new  Properties();      // p.setProperty(Velocity.FILE_RESOURCE_LOADER_PATH, "");      p.setProperty(Velocity.ENCODING_DEFAULT,  "UTF-8" );      p.setProperty(Velocity.INPUT_ENCODING,  "UTF-8" );      p.setProperty(Velocity.OUTPUT_ENCODING,  "UTF-8" );      try  {          Velocity.init(p);          String res =  "Table.vm" ;          System.out.println(res);          Template template = Velocity.getTemplate(res);          VelocityContext context =  new  VelocityContext();          String name =  "Test For My" ;          context.put( "title" ,  "xxx测试报告" );          context.put( "date" ,  "2015年06月19日" );          context.put( "author" ,  "lgw" );          context.put( "cpuCol" ,  "3" );          context.put( "memCol" ,  "2" );          context.put( "baterryCol" ,  "1" );          context.put( "total" ,  "6" );          ArrayList<String> cpulist =  new  ArrayList<String>();          cpulist.add( "cpu1sdfsfsdfsdfsdf" );          cpulist.add( "cpu2sdfasdfdsfsa" );          cpulist.add( "cpu3" );          ArrayList<String> memlist =  new  ArrayList<String>();          cpulist.add( "mem1" );          cpulist.add( "mem2sdfsfsdfasdf" );          ArrayList<String> batterylist =  new  ArrayList<String>();          cpulist.add( "battery1sdfsadfdsf" );          context.put( "cpuList" , cpulist);          context.put( "memList" , memlist);          context.put( "batteryList" , batterylist);          String out =  "Table.html" ;          FileOutputStream fos =  new  FileOutputStream(out);          BufferedWriter writer =  new  BufferedWriter( new  OutputStreamWriter(                  fos,  "UTF-8" )); // 设置写入的文件编码,解决中文问题          template.merge(context, writer);          writer.close();      }  catch  (Exception e) {          e.printStackTrace();      } }

5. 效果示例：