256 lines
7.5 KiB
Java
256 lines
7.5 KiB
Java
package com.lxyer.excel;
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import net.tccn.kit.poi.ExcelExportKit;
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import net.tccn.kit.poi.ExcelKit;
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import org.apache.poi.ss.usermodel.Workbook;
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import org.junit.Test;
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import java.io.*;
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import java.lang.reflect.Field;
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import java.util.*;
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import java.util.function.BiFunction;
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import java.util.function.Function;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import static java.util.Arrays.asList;
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/**
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* 以下均为非poi导出使用示例
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* 1、导出List<javabean>示例
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* 2、导出List<Map> 示例
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* 3、javax.servlet web项目中开发使用示例
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* 4、导出压缩的excel示例
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* 5、redkale web项目导出示例
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*
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* Created by liangxianyou at 2018/7/6 10:29.
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*/
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public class ExportKitTest {
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//1、导出List<javabean>示例
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//@Test
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public void exportBean(){
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Map<String, String> heads = new LinkedHashMap();
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heads.put("姓名", "name");
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heads.put("年龄", "age");
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heads.put("生日", "bir");
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int total = 5_0000;
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List rows = new ArrayList<>(total);
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Random random = new Random();
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for (int i = 0; i < total; i++) {
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String name = UUID.randomUUID().toString();
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int age = random.nextInt(100);
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rows.add(new Person(name, age, new Date()));
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}
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File file = new File("target/user.xls");
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if (file.exists()) file.delete();
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try {
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ExcelExportKit.exportExceltoFile(heads, rows, file, ExcelExportKit.TC.BEAN);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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//2、导出List<Map> 示例
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//@Test
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public void exportMapToZip(){
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Map<String, String> heads = new LinkedHashMap();
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heads.put("姓名", "name");
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heads.put("姓名1", "name1");
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heads.put("姓名2", "name2");
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heads.put("年龄", "age");
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int total = 5_0000;
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List<Map> rows = new ArrayList<>(total);
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Map r1 = new HashMap();
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r1.put("name", "张三");
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r1.put("age", 12);
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rows.add(r1);
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Random random = new Random();
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//使用uuid 模拟复杂数据导出
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for (int i = 0; i < total; i++) {
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Map r2 = new HashMap();
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r2.put("name", UUID.randomUUID());
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r2.put("name1", UUID.randomUUID());
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r2.put("name2", UUID.randomUUID());
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r2.put("age", random.nextInt(100));
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rows.add(r2);
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}
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File file = new File("target/hello.zip");
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if (file.exists()) file.delete();
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try {
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exportExcelZip(heads, rows, file, ExcelExportKit.TC.MAP);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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//==================项目中使用示例，实际项目根据实际情况拷贝修改使用========================
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/**
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* 3、javax.servlet web项目中开发使用示例
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* @param head 表头
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* @param rows 数据
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* @param request
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* @param response
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* @param xlsName 导出的文件名称
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* @return
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* @throws IOException
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*/
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/*
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public <T> boolean exportExcel(Map head, List<T> rows, HttpServletRequest request, HttpServletResponse response, String xlsName, BiFunction fun) throws IOException {
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if(request.getHeader("user-agent") != null && request.getHeader("user-agent").indexOf("MSIE") != -1) {
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xlsName = java.net.URLEncoder.encode(xlsName,"utf-8") + ".xls";
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} else {
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xlsName = new String(xlsName.getBytes("utf-8"),"iso-8859-1")+ ".xls";
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}
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CountDownLatch latch = new CountDownLatch(187);
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latch.countDown();
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OutputStream os = response.getOutputStream();
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response.setContentType("application/vnd.ms-excel");
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response.setHeader("Content-disposition", "attachment;filename="+xlsName);
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os.write(ExcelExportKit.exportExcel(head, rows, fun).toString().getBytes());
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return true;
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}
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*/
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/**
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* 4、导出压缩的excel示例
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* @param head
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* @param rows
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* @param file
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* @param fun
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* @param <T>
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* @throws IOException
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*/
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public <T,U,R> void exportExcelZip(Map<String,String> head, List<T> rows, File file, BiFunction<T, U, R> fun) throws IOException {
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ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(file));
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BufferedOutputStream bos = new BufferedOutputStream(zos);
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ZipEntry zipEntry = new ZipEntry(file.getName().split("[.]")[0]+".xls");
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zos.putNextEntry(zipEntry);
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StringBuilder buf = ExcelExportKit.exportExcel(head, rows, fun);
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bos.write(buf.toString().getBytes());
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bos.flush();
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bos.close();
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zos.close();
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}
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/**
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* 5、redkale web项目导出示例
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* @return
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* @throws IOException
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*/
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/*
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public static <T,U,R> void exportExcel(Map head, List<T> rows, HttpResponse response, String xlsName, BiFunction<T,U,R> fun) throws IOException {
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xlsName = new String(xlsName.getBytes("utf-8"),"iso-8859-1")+ ".xls";
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response.setContentType("application/vnd.ms-excel");
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response.setHeader("Content-disposition", "attachment;filename="+xlsName);
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StringBuilder buf = ExcelExportKit.exportExcel(head, rows, fun);
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response.finish(buf.toString().getBytes());
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}
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*/
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@Test
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public void t() {
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Object t = new Person();
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((Person) t).setAge(20);
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((Person) t).setName("'zhangsan'");
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Class<?> clazz = t.getClass();
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Field[] fields = clazz.getDeclaredFields();
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for (Field field : fields) {
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try {
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if (field.getType() == String.class) {
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field.setAccessible(true);
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String v = (String) field.get(t);
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v = v.replace("'", "");
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field.set(t, v);
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System.out.println(field.getName() + "\t|" + field.getType() + "\t|" + v);
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}
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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}
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System.out.println("--------------------------------");
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System.out.println(((Person) t).getName());
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//Field field = fields[0];
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/*
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field.getGenericType();
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field.setAccessible(true); //暴力反射
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Object o = field.get(t);//得到字段数据的值
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*/
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}
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@Test
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public void t2() {
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Person person = new Person();
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/*person.setName("dsafd''s'f");
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person.setAge(123);*/
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//HashMap<Object, Object> person = new HashMap<>();
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//person.put("name", "sdfdsdfad''sa");
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dealField(person, (s) -> {
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String v = s.replace("'", "");
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return v;
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});
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System.out.println(person.getName());
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}
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/**
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* 对象属性处理，
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* @param o
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* @param function
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* @auther lxyer
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*/
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public void dealField(Object o, Function<String, String> function) {
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try {
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Class<?> clazz = o.getClass();
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Field[] fields = clazz.getDeclaredFields();
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for (Field field : fields) {
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if (field.getType() == String.class) {
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field.setAccessible(true);
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String v = (String) field.get(o);
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//v = v.replace("'", "");
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if (v != null) {
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v = function.apply(v);
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field.set(o, v);
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}
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}
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}
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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