springboot項目整合easypoi實現導入導出功能

導入依賴

在導入依賴錢看是否項目中存在poi相關的版本。直接從pom文件中去除exclusion。

本次使用的是4.2.0 。maven依賴以下：

<dependency>
			<groupId>cn.afterturn</groupId>
			<artifactId>easypoi-spring-boot-starter</artifactId>
			<version>4.2.0</version>

		</dependency>
		<dependency>
			<groupId>org.hibernate.validator</groupId>
			<artifactId>hibernate-validator</artifactId>
			<version>6.1.6.Final</version>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi</artifactId>
			<version>4.1.0</version>
		</dependency>
		<dependency>
			<groupId>cn.afterturn</groupId>
			<artifactId>easypoi-base</artifactId>
			<version>4.0.0</version>
			<exclusions>
				<exclusion>
					<groupId>com.google.guava</groupId>
					<artifactId>guava</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.6</version>
		</dependency>

貌似沒用到easypoi-base 。先無論了

按照官方說明。建立實體

官方文檔;

public class MaterialExport implements Serializable {
// 物資名稱
	@Excel(name = "物資名稱", width = 15)
	private String name;
	// 物資規格
	@Excel(name = "物資規格")
	private String specs;
	// 物資類型
	@Excel(name = "物資類型")
	private String type;

	// 單位
	@Excel(name = "單位")
	private String unit;
	// 庫存
	@Excel(name = "庫存")
	private long num;
	
	//單價
	@Excel(name = "單價")
	private BigDecimal unitprice;
	// 廠家
	@Excel(name = "廠家", width = 20)
	private String manufactor;
	// 庫存位置
	@Excel(name = "庫存位置", width = 20)
	private String address;
	// 用途
	@Excel(name = "用途", width = 20)
	private String purpose;

	@Excel(name = "入庫時間",format = "yyyy年MM月dd日", width = 25)
	@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss")
	@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
	private Date createTime;

	// 備註
	@Excel(name = "備註", width = 40)
	private String remarks;
	//getter setter方法省略。

｝

在導入時須要注意：實體中用到的屬性爲java基本屬性或者是在「java.lang」、「java.math」、「java.sql」、「java.util」包中具體easypoi中邏輯代碼爲：

/**
     * 是否是java基礎類
     *
     * @param field
     * @return
     */
    public static boolean isJavaClass(Field field) {
        Class<?> fieldType = field.getType();
        boolean isBaseClass = false;
        if (fieldType.isArray()) {
            isBaseClass = false;
        } else if (fieldType.isPrimitive() || fieldType.getPackage() == null
                   || "java.lang".equals(fieldType.getPackage().getName())
                   || "java.math".equals(fieldType.getPackage().getName())
                   || "java.sql".equals(fieldType.getPackage().getName())
                   || "java.util".equals(fieldType.getPackage().getName())) {
            isBaseClass = true;
        }
        return isBaseClass;
    }

導出功能

獲取數據後直接調用Util方法
controller：

public Result export(HttpServletRequest request, HttpServletResponse response) {
		System.out.println(sdf.format(new Date()));
		//此處爲從數據庫獲取list
		 List<MaterialExport> materialExports = materialService.export();
		response.setContentType("application/vnd.ms-excel");
		OutputStream out = null;
		try {
			response.setHeader("Content-disposition",
					"attachment;filename=" + URLEncoder.encode("物資導出" + sdf.format(new Date()) + ".xls","ISO-8859-1" ));
			Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("物資庫存信息", "物資"),

					MaterialExport.class, materialExports);
			out = response.getOutputStream();
			workbook.write(out);
		} catch (Exception e) {
			System.out.println(e.getMessage());
			System.out.println(e);
		} finally {
			try {
				if (out != null)
					out.close();
			} catch (IOException e) {
			}
		}

		return Response.success();
	}

導入

從文件流中獲取數據用easypoi解析數據：

public Result inport(HttpServletRequest request,@RequestParam("file") MultipartFile fileItem) {
	ImportParams importParams = new ImportParams();
	  
	    importParams.setHeadRows(2);
	    // 獲取模板
	    ExcelImportResult<MaterialExport> data = null;
	    try {
	        data = ExcelImportUtil.importExcelMore(fileItem.getInputStream(), MaterialExport.class, importParams);
	    } catch (Exception e) {
	    	e.printStackTrace();
	    }

	    // 獲取模板數據
	    List<MaterialExport> successList = data.getList();
	    int total = successList.size();
	    // 循環數據
	    System.out.println(total);
	    for (MaterialExport excelDTO : successList) {
	    	System.out.println(excelDTO.toString());
	    }
		return Response.success();
	}

完畢。

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