Java 复杂excel报表导出

MyExcel,是一个可直接使用Html文件,或者使用内置的Freemarker、Groovy、Beetl等模板引擎Excel构建器生成的Html文件,以Html文件中的Table作为Excel模板来生成任意复杂布局的Excel的工具包,支持.xls、.xlsx格式,支持对背景色、边框、字体等进行个性化设置,支持合并单元格。

Github:https://github.com/liaochong/myexcel

详细文档:https://github.com/liaochong/myexcel/wiki

maven引用:

<dependency>
    <groupId>com.github.liaochong</groupId>
    <artifactId>myexcel</artifactId>
    <version>2.1.1</version>
</dependency>

优点:

  • 可生成任意复杂表格:本工具使用迭代单元格方式进行excel绘制,可生成任意复杂度excel,自适应宽度、高度;
  • 零学习成本:使用html作为模板,学习成本几乎为零;
  • 支持常用背景色、边框、字体等样式设置:具体参见文档-Style-support(样式支持)部分;
  • 支持.XLS、.XLSX:支持生成.xls、.xlsx后缀的excel;
  • 支持低内存SXSSF模式:支持低内存的SXSSF模式,可利用极低的内存生成.xlsx;
  • 支持生产者消费者模式导出:支持生产者消费者模式导出,配合SXSSF模式实现真正意义上海量数据导出;
  • 支持多种模板引擎:已内置Freemarker、Groovy、Beetl等常用模板引擎Excel构建器(详情参见文档Getting started),默认内置Beetl模板引擎(推荐引擎,Beetl文档);
  • 提供默认Excel构建器,直接输出简单Excel:无需编写任何html,已内置默认模板,可直接根据POJO数据列表输出;
  • 支持一次生成多sheet:以table作为sheet单元,支持一份excel文档中多sheet导出;

可选模板:

  1. 以下模板引擎除Beetl外默认均未被引入,使用者可根据自身需要选择在pom.xml中声明引入;
  2. 以下模板引擎版本为最低版本号;
<dependency>
    <groupId>com.ibeetl</groupId>
    <artifactId>beetl</artifactId>
    <version>2.7.23</version>
</dependency>

<dependency>
    <groupId>org.freemarker</groupId>
    <artifactId>freemarker</artifactId>
    <version>2.3.23</version>
</dependency>

<dependency>
    <groupId>org.codehaus.groovy</groupId>
    <artifactId>groovy-templates</artifactId>
    <version>2.4.13</version>
</dependency>

示例:

  1. 已存在html文件,使用这种方式时,html文件不局限于放在项目的classpath下
    // get html file
    File htmlFile = new File("/Users/liaochong/Downloads/example.html");
    // read the html file and use default excel style to create excel Workbook workbook = HtmlToExcelFactory.readHtml(htmlFile).useDefaultStyle().build();
    // this is a example,you can write the workbook to any valid outputstream OutputStream writer = new FileOutputStream(new File("/Users/liaochong/Downloads/excel.xlsx")); workbook.write(writer);
  2. 默认模板引擎使用
    List<Child> dataList = new ArrayList<>();
    for (int i = 0; i < 500000; i++) {
         Child child = new Child();
         child.setName("liaochong");
         child.setAge(i);
         child.setSex(1);
         child.setIndex(i);
         dataList.add(child);
    }
    Workbook workbook = DefaultExcelBuilder.getInstance().build(dataList);
    
    @ExcelTable(workbookType = WorkbookType.SXLSX, rowAccessWindowSize = 100, sheetName = "测试")
    public static class Child extends Parent {
         @ExcelColumn(order = 3, title = "姓名")
         private String name;
    
         @ExcludeColumn
         private Integer age;
    
         public String getName() {
             return name;
         }
    
         public void setName(String name) {
             this.name = name;
         }
    
         public Integer getAge() {
             return age;
         }
    
         public void setAge(Integer age) {
             this.age = age;
         }
    }
    
    public static class Parent {
    
         @ExcelColumn(title = "性别")
         private Integer sex;
    
         @ExcelColumn(order = -1, title = "index")
         private Integer index;
    
         public Integer getSex() {
              return sex;
         }
    
         public void setSex(Integer sex) {
              this.sex = sex;
         }
    
         public Integer getIndex() {
              return index;
         }
    
         public void setIndex(Integer index) {
              this.index = index;
         }
    }
  3. 使用freemarker等模板引擎,具体请参照项目中的example
    /**
         * use non-default-style excel builder
         *
         * @param response response
         */
        @GetMapping("/freemarker/build")
        public void build(HttpServletResponse response) {
            ExcelBuilder excelBuilder = new FreemarkerExcelBuilder();
            Workbook workbook = excelBuilder.template("/templates/freemarker_template.ftl").build(new HashMap<>());
    
            response.setCharacterEncoding(CharEncoding.UTF_8);
            response.addHeader("Content-Disposition", "attachment;filename=" + new String("freemarker_excel.xlsx".getBytes()));
            try {
                workbook.write(response.getOutputStream());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        /**
         * use default-style excel builder
         *
         * @param response response
         */
        @GetMapping("/freemarker/default_style/build")
        public void buildWithDefaultStyle(HttpServletResponse response) {
            ExcelBuilder excelBuilder = new FreemarkerExcelBuilder();
            Workbook workbook = excelBuilder.template("/templates/freemarker_template.ftl").useDefaultStyle().build(new HashMap<>());
    
            response.setCharacterEncoding(CharEncoding.UTF_8);
            response.addHeader("Content-Disposition", "attachment;filename=" + new String("freemarker_excel.xlsx".getBytes()));
            try {
                workbook.write(response.getOutputStream());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

     

posted @ 2018-11-21 00:32  雨中漫步,惟情而已  阅读(5370)  评论(0编辑  收藏  举报