java 代码读取excel内容。

使用阿里巴巴easyexcel读取excel内容。

##excel内容

##依赖

<dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>easyexcel</artifactId>
      <version>3.1.5</version>
    </dependency>

##实体类TableExcelInfo

package com.yym.entity;

import com.alibaba.excel.annotation.ExcelProperty;

import java.io.Serializable;

public class TableExcelInfo implements Serializable {

    @ExcelProperty("表名称")
    private String c_A;
    @ExcelProperty("用途")
    private String c_B;
    @ExcelProperty("数量")
    private int c_C;
    @ExcelProperty("框架&业务共用")
    private String c_D;
    @ExcelProperty("是否再用")
    private String c_E;

    public String getC_A() {
        return c_A;
    }

    public void setC_A(String c_A) {
        this.c_A = c_A;
    }

    public String getC_B() {
        return c_B;
    }

    public void setC_B(String c_B) {
        this.c_B = c_B;
    }

    public int getC_C() {
        return c_C;
    }

    public void setC_C(int c_C) {
        this.c_C = c_C;
    }

    public String getC_D() {
        return c_D;
    }

    public void setC_D(String c_D) {
        this.c_D = c_D;
    }

    public String getC_E() {
        return c_E;
    }

    public void setC_E(String c_E) {
        this.c_E = c_E;
    }
}

##读取excel工具类ReadExcelUtils

package com.yym.utils;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.read.listener.ReadListener;
import com.alibaba.excel.util.ListUtils;
import com.alibaba.fastjson.JSONObject;
import com.yym.entity.TableExcelInfo;

import java.util.ArrayList;
import java.util.List;

public class ReadExcelUtils {

    /**
     * 单次缓存的数据量
     */
    public static final int BATCH_COUNT = 100000;
    /**
     *临时存储
     */
    public static List<TableExcelInfo> cachedDataList = ListUtils.newArrayListWithExpectedSize(BATCH_COUNT);
    public static List<String> tablesName = new ArrayList<>();

    public static void readExcel(String fileName, String sheetName) {
        EasyExcel.read(fileName, TableExcelInfo.class, new ReadListener<TableExcelInfo>() {

            @Override
            public void invoke(TableExcelInfo data, AnalysisContext context) {
                cachedDataList.add(data);
            }

            @Override
            public void doAfterAllAnalysed(AnalysisContext context) {
                for(int i=0;i<cachedDataList.size();i++) {
                    System.out.println(JSONObject.toJSONString(cachedDataList.get(i)));
                    if("是".equals(cachedDataList.get(i).getC_E())) {
                        tablesName.add(cachedDataList.get(i).getC_A());
                    }
                }

                System.out.println(JSONObject.toJSONString(tablesName));
            }
        }).sheet(sheetName).doRead();
    }

    public static void main(String[] args) {
        readExcel("F:\\information_schema.xlsx", "Sheet1");
    }

}

##调用工具类

ReadExcelUtils.readExcel("F:\\\\information_schema.xlsx", "Sheet3");

##结果