Excel4J v2.x

一. v2.x新特性

1. Excel读取支持部分类型转换了(如转为Integer,Long,Date(部分)等) v2.0.0之前只能全部内容转为String
2. Excel支持非注解读取Excel内容了,内容存于List<List<String>>对象内
3. 现在支持List<List<String>>导出Excel了(可以不基于模板)
4. Excel新增了Map数据样式映射功能(模板可为每个key设置一个样式,定义为:&key, 导出Map数据的样式将与key值映射)
5. 新增读取Excel数据转换器接口com.github.converter.ReadConvertible
6. 新增写入Excel数据转换器接口com.github.converter.WriteConvertible
7. 修复已知bug

二. 基于注解(/src/test/java/modules/Student2.java)

    @ExcelField(title = "学号", order = 1)     private Long id;      @ExcelField(title = "姓名", order = 2)     private String name;      // 写入数据转换器 Student2DateConverter     @ExcelField(title = "入学日期", order = 3, writeConverter = Student2DateConverter.class)     private Date date;      @ExcelField(title = "班级", order = 4)     private Integer classes;      // 读取数据转换器 Student2ExpelConverter     @ExcelField(title = "是否开除", order = 5, readConverter = Student2ExpelConverter.class)     private boolean expel; 

三. 读取Excel快速实现

1.待读取Excel(截图)

2. 读取转换器(/src/test/java/converter/Student2ExpelConverter.java)

    /**      * excel是否开除 列数据转换器      */     public class Student2ExpelConverter implements ReadConvertible{              @Override         public Object execRead(String object) {                  return object.equals("是");         }     } 

3. 读取函数(/src/test/java/base/Excel2Module.java#excel2Object2)

    @Test     public void excel2Object2() {          String path = "D:\\JProject\\Excel4J\\src\\test\\resource\\students_02.xlsx";         try {                          // 1)             // 不基于注解,将Excel内容读至List<List<String>>对象内             List<List<String>> lists = ExcelUtils.getInstance().readExcel2List(path, 1, 2, 0);             System.out.println("读取Excel至String数组：");             for (List<String> list : lists) {                 System.out.println(list);             }                          // 2)             // 基于注解,将Excel内容读至List<Student2>对象内             // 验证读取转换函数Student2ExpelConverter              // 注解 `@ExcelField(title = "是否开除", order = 5, readConverter =  Student2ExpelConverter.class)`             List<Student2> students = ExcelUtils.getInstance().readExcel2Objects(path, Student2.class, 0, 0);             System.out.println("读取Excel至对象数组(支持类型转换)：");             for (Student2 st : students) {                 System.out.println(st);             }         } catch (Exception e) {             e.printStackTrace();         }     } 

4. 读取结果

读取Excel至String数组： [10000000000001, 张三, 2016/01/19, 101, 是] [10000000000002, 李四, 2017-11-17 10:19:10, 201, 否] 读取Excel至对象数组(支持类型转换)： Student2{id=10000000000001, name='张三', date=Tue Jan 19 00:00:00 CST 2016, classes=101, expel='true'} Student2{id=10000000000002, name='李四', date=Fri Nov 17 10:19:10 CST 2017, classes=201, expel='false'} Student2{id=10000000000004, name='王二', date=Fri Nov 17 00:00:00 CST 2017, classes=301, expel='false'} 

四. 导出Excel

1. 不基于模板快速导出

1) 导出函数(/src/test/java/base/Module2Excel.java#testList2Excel)

    @Test     public void testList2Excel() throws Exception {                  List<List<String>> list2 = new ArrayList<>();         List<String> header = new ArrayList<>();         for (int i = 0; i < 10; i++) {             List<String> _list = new ArrayList<>();             for (int j = 0; j < 10; j++) {                 _list.add(i + " -- " + j);             }             list2.add(_list);             header.add(i + "---");         }         ExcelUtils.getInstance().exportObjects2Excel(list2, header, "D:/D.xlsx");     } 

2) 导出效果(截图)

2. 带有写入转换器函数的导出

1) 转换器(/src/test/java/converter/Student2DateConverter.java)

    /**      * 导出excel日期数据转换器      */     public class Student2DateConverter implements WriteConvertible {                   @Override         public Object execWrite(Object object) {                  Date date = (Date) object;             return DateUtils.date2Str(date, DateUtils.DATE_FORMAT_MSEC_T_Z);         }     }  

2）导出函数(/src/test/java/base/Module2Excel.java#testWriteConverter)

    // 验证日期转换函数 Student2DateConverter     // 注解 `@ExcelField(title = "入学日期", order = 3, writeConverter = Student2DateConverter.class)`     @Test     public void testWriteConverter() throws Exception {          List<Student2> list = new ArrayList<>();         for (int i = 0; i < 10; i++) {             list.add(new Student2(10000L + i, "学生" + i, new Date(), 201, false));         }         ExcelUtils.getInstance().exportObjects2Excel(list, Student2.class, true, "sheet0", true, "D:/D.xlsx");     } 

3) 导出效果(截图)

3. 基于模板List<Oject>导出

1) 导出函数(/src/test/java/base/Module2Excel.java#testObject2Excel)

    @Test     public void testObject2Excel() throws Exception {          String tempPath = "/normal_template.xlsx";         List<Student1> list = new ArrayList<>();         list.add(new Student1("1010001", "盖伦", "六年级三班"));         list.add(new Student1("1010002", "古尔丹", "一年级三班"));         list.add(new Student1("1010003", "蒙多(被开除了)", "六年级一班"));         list.add(new Student1("1010004", "萝卜特", "三年级二班"));         list.add(new Student1("1010005", "奥拉基", "三年级二班"));         list.add(new Student1("1010006", "得嘞", "四年级二班"));         list.add(new Student1("1010007", "瓜娃子", "五年级一班"));         list.add(new Student1("1010008", "战三", "二年级一班"));         list.add(new Student1("1010009", "李四", "一年级一班"));         Map<String, String> data = new HashMap<>();         data.put("title", "战争学院花名册");         data.put("info", "学校统一花名册");         // 基于模板导出Excel         ExcelUtils.getInstance().exportObjects2Excel(tempPath, 0, list, data, Student1.class, false, "D:/A.xlsx");         // 不基于模板导出Excel         ExcelUtils.getInstance().exportObjects2Excel(list, Student1.class, true, null, true, "D:/B.xlsx");      } 

2) 导出模板(截图)

3) 基于模板导出结果(截图)

4) 不基于模板导出结果(截图)

4. 基于模板Map<String, Collection<Object.toString>>导出

1) 导出函数(/src/test/java/base/Module2Excel.java#testMap2Excel)

    @Test     public void testMap2Excel() throws Exception {          Map<String, List> classes = new HashMap<>();          Map<String, String> data = new HashMap<>();         data.put("title", "战争学院花名册");         data.put("info", "学校统一花名册");          classes.put("class_one", new ArrayList<Student1>() {{             add(new Student1("1010009", "李四", "一年级一班"));             add(new Student1("1010002", "古尔丹", "一年级三班"));         }});         classes.put("class_two", new ArrayList<Student1>() {{             add(new Student1("1010008", "战三", "二年级一班"));         }});         classes.put("class_three", new ArrayList<Student1>() {{             add(new Student1("1010004", "萝卜特", "三年级二班"));             add(new Student1("1010005", "奥拉基", "三年级二班"));         }});         classes.put("class_four", new ArrayList<Student1>() {{             add(new Student1("1010006", "得嘞", "四年级二班"));         }});         classes.put("class_six", new ArrayList<Student1>() {{             add(new Student1("1010001", "盖伦", "六年级三班"));             add(new Student1("1010003", "蒙多", "六年级一班"));         }});          ExcelUtils.getInstance().exportObject2Excel("/map_template.xlsx",                 0, classes, data, Student1.class, false, "D:/C.xlsx");     } 

2) 导出模板(截图)

3) 导出结果(截图)

五. 使用(JDK1.7及以上)

1) github拷贝项目

git clone https://github.com/Crab2died/Excel4J.git Excel4J 

2) 最新版本maven 引用：

<dependency>     <groupId>com.github.crab2died</groupId>     <artifactId>Excel4J</artifactId>     <version>2.1.0</version> </dependency> 

六. 开源协议:Apache-2.0

七. 链接

github -> github地址

码云 -> 码云