「javapoi编码」javapoi详细教程

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本文目录一览：

• 1、JAVA使用POI读写word 乱码
• 2、java poi导出excel乱码
• 3、java如何导出excel表格,如果用poi,java代码如何实现.，求代码！！！
• 4、java 通过poi读取excel数据存入mysql数据库中文乱码，怎么解决？
• 5、JAVA POI

JAVA使用POI读写word 乱码

写

public static void main(String args[])

throws Exception

{

XWPFDocument doc = new XWPFDocument();

XWPFParagraph p1 = doc.createParagraph();

p1.setAlignment(ParagraphAlignment.CENTER);

p1.setBorderBottom(Borders.DOUBLE);

p1.setBorderTop(Borders.DOUBLE);

p1.setBorderRight(Borders.DOUBLE);

p1.setBorderLeft(Borders.DOUBLE);

p1.setBorderBetween(Borders.SINGLE);

p1.setVerticalAlignment(TextAlignment.TOP);

XWPFRun r1 = p1.createRun();

r1.setBold(true);

r1.setText("The quick brown fox");

r1.setBold(true);

r1.setFontFamily("Courier");

r1.setUnderline(UnderlinePatterns.DOT_DOT_DASH);

r1.setTextPosition(100);

XWPFParagraph p2 = doc.createParagraph();

p2.setAlignment(ParagraphAlignment.RIGHT);

p2.setBorderBottom(Borders.DOUBLE);

p2.setBorderTop(Borders.DOUBLE);

p2.setBorderRight(Borders.DOUBLE);

p2.setBorderLeft(Borders.DOUBLE);

p2.setBorderBetween(Borders.SINGLE);

XWPFRun r2 = p2.createRun();

r2.setText("jumped over the lazy dog");

r2.setStrike(true);

r2.setFontSize(20);

XWPFRun r3 = p2.createRun();

r3.setText("and went away");

r3.setStrike(true);

r3.setFontSize(20);

r3.setSubscript(VerticalAlign.SUPERSCRIPT);

XWPFParagraph p3 = doc.createParagraph();

p3.setWordWrap(true);

p3.setPageBreak(true);

p3.setAlignment(ParagraphAlignment.BOTH);

p3.setSpacingLineRule(LineSpacingRule.EXACT);

p3.setIndentationFirstLine(600);

XWPFRun r4 = p3.createRun();

r4.setTextPosition(20);

r4.setText("To be, or not to be: that is the question: Whether 'tis nobler in the mind to suffer The slings and arrows of outrageous fortune, Or to take arms against a sea of troubles, And by opposing end them? To die: to sleep; ");

r4.addBreak(BreakType.PAGE);

r4.setText("No more; and by a sleep to say we end The heart-ache and the thousand natural shocks That flesh is heir to, 'tis a consummation Devoutly to be wish'd. To die, to sleep; To sleep: perchance to dream: ay, there's the rub; .......");

r4.setItalic(true);

XWPFRun r5 = p3.createRun();

r5.setTextPosition(-10);

r5.setText("For in that sleep of death what dreams may come");

r5.addCarriageReturn();

r5.setText("When we have shuffled off this mortal coil,Must give us pause: there's the respectThat makes calamity of so long life;");

r5.addBreak();

r5.setText("For who would bear the whips and scorns of time,The oppressor's wrong, the proud man's contumely,");

r5.addBreak(BreakClear.ALL);

r5.setText("The pangs of despised love, the law's delay,The insolence of office and the spurns.......");

FileOutputStream out = new FileOutputStream("simple.docx");

doc.write(out);

out.close();

}

java poi导出excel乱码

在不同的系统下字符集的编码有可能不一样，windows系统中从程序到底层是从unicode编码进行转换，unix系统下就不一定是从unicode编码开始转换的，支不支持unicode编码我也不知道，我估计就是系统的字符集编码不同的问题

java如何导出excel表格,如果用poi,java代码如何实现.，求代码！！！

项目结构：

xls:

\\\

XlsMain .java 类

//该类有main方法，主要负责运行程序，同时该类中也包含了用poi读取Excel(2003版)

*

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

/**

*

* @author Hongten/br

*

* 参考地址：

*

*/

public class XlsMain {

public static void main(String[] args) throws IOException {

XlsMain xlsMain = new XlsMain();

XlsDto xls = null;

ListXlsDto list = xlsMain.readXls();

try {

XlsDto2Excel.xlsDto2Excel(list);

} catch (Exception e) {

e.printStackTrace();

}

for (int i = 0; i list.size(); i++) {

xls = (XlsDto) list.get(i);

System.out.println(xls.getXh() + " " + xls.getXm() + " "

+ xls.getYxsmc() + " " + xls.getKcm() + " "

+ xls.getCj());

}

}

/**

* 读取xls文件内容

*

* @return ListXlsDto对象

* @throws IOException

* 输入/输出(i/o)异常

*/

private ListXlsDto readXls() throws IOException {

InputStream is = new FileInputStream("pldrxkxxmb.xls");

HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);

XlsDto xlsDto = null;

ListXlsDto list = new ArrayListXlsDto();

// 循环工作表Sheet

for (int numSheet = 0; numSheet hssfWorkbook.getNumberOfSheets(); numSheet++) {

HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);

if (hssfSheet == null) {

continue;

}

// 循环行Row

for (int rowNum = 1; rowNum = hssfSheet.getLastRowNum(); rowNum++) {

HSSFRow hssfRow = hssfSheet.getRow(rowNum);

if (hssfRow == null) {

continue;

}

xlsDto = new XlsDto();

// 循环列Cell

// 0学号 1姓名 2学院 3课程名 4 成绩

// for (int cellNum = 0; cellNum =4; cellNum++) {

HSSFCell xh = hssfRow.getCell(0);

if (xh == null) {

continue;

}

xlsDto.setXh(getValue(xh));

HSSFCell xm = hssfRow.getCell(1);

if (xm == null) {

continue;

}

xlsDto.setXm(getValue(xm));

HSSFCell yxsmc = hssfRow.getCell(2);

if (yxsmc == null) {

continue;

}

xlsDto.setYxsmc(getValue(yxsmc));

HSSFCell kcm = hssfRow.getCell(3);

if (kcm == null) {

continue;

}

xlsDto.setKcm(getValue(kcm));

HSSFCell cj = hssfRow.getCell(4);

if (cj == null) {

continue;

}

xlsDto.setCj(Float.parseFloat(getValue(cj)));

list.add(xlsDto);

}

}

return list;

}

/**

* 得到Excel表中的值

*

* @param hssfCell

* Excel中的每一个格子

* @return Excel中每一个格子中的值

*/

@SuppressWarnings("static-access")

private String getValue(HSSFCell hssfCell) {

if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {

// 返回布尔类型的值

return String.valueOf(hssfCell.getBooleanCellValue());

} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {

// 返回数值类型的值

return String.valueOf(hssfCell.getNumericCellValue());

} else {

// 返回字符串类型的值

return String.valueOf(hssfCell.getStringCellValue());

}

}

}

XlsDto2Excel.java类

//该类主要负责向Excel(2003版)中插入数据

import java.io.FileOutputStream;

import java.io.OutputStream;

import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFRichTextString;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class XlsDto2Excel {

/**

*

* @param xls

* XlsDto实体类的一个对象

* @throws Exception

* 在导入Excel的过程中抛出异常

*/

public static void xlsDto2Excel(ListXlsDto xls) throws Exception {

// 获取总列数

int CountColumnNum = xls.size();

// 创建Excel文档

HSSFWorkbook hwb = new HSSFWorkbook();

XlsDto xlsDto = null;

// sheet 对应一个工作页

HSSFSheet sheet = hwb.createSheet("pldrxkxxmb");

HSSFRow firstrow = sheet.createRow(0); // 下标为0的行开始

HSSFCell[] firstcell = new HSSFCell[CountColumnNum];

String[] names = new String[CountColumnNum];

names[0] = "学号";

names[1] = "姓名";

names[2] = "学院";

names[3] = "课程名";

names[4] = "成绩";

for (int j = 0; j CountColumnNum; j++) {

firstcell[j] = firstrow.createCell(j);

firstcell[j].setCellValue(new HSSFRichTextString(names[j]));

}

for (int i = 0; i xls.size(); i++) {

// 创建一行

HSSFRow row = sheet.createRow(i + 1);

// 得到要插入的每一条记录

xlsDto = xls.get(i);

for (int colu = 0; colu = 4; colu++) {

// 在一行内循环

HSSFCell xh = row.createCell(0);

xh.setCellValue(xlsDto.getXh());

HSSFCell xm = row.createCell(1);

xm.setCellValue(xlsDto.getXm());

HSSFCell yxsmc = row.createCell(2);

yxsmc.setCellValue(xlsDto.getYxsmc());

HSSFCell kcm = row.createCell(3);

kcm.setCellValue(xlsDto.getKcm());

HSSFCell cj = row.createCell(4);

cj.setCellValue(xlsDto.getCj());

(xlsDto.getMessage());

}

}

// 创建文件输出流，准备输出电子表格

OutputStream out = new FileOutputStream("POI2Excel/pldrxkxxmb.xls");

hwb.write(out);

out.close();

System.out.println("数据库导出成功");

}

}

XlsDto .java类

//该类是一个实体类

public class XlsDto {

/**

* 选课号

*/

private Integer xkh;

/**

* 学号

*/

private String xh;

/**

* 姓名

*/

private String xm;

/**

* 学院

*/

private String yxsmc;

/**

* 课程号

*/

private Integer kch;

/**

* 课程名

*/

private String kcm;

/**

* 成绩

*/

private float cj;

public Integer getXkh() {

return xkh;

}

public void setXkh(Integer xkh) {

this.xkh = xkh;

}

public String getXh() {

return xh;

}

public void setXh(String xh) {

this.xh = xh;

}

public String getXm() {

return xm;

}

public void setXm(String xm) {

this.xm = xm;

}

public String getYxsmc() {

return yxsmc;

}

public void setYxsmc(String yxsmc) {

this.yxsmc = yxsmc;

}

public Integer getKch() {

return kch;

}

public void setKch(Integer kch) {

this.kch = kch;

}

public String getKcm() {

return kcm;

}

public void setKcm(String kcm) {

this.kcm = kcm;

}

public float getCj() {

return cj;

}

public void setCj(float cj) {

this.cj = cj;

}

}

后台输出：

数据库导出成功

1.0 hongten 信息技术学院 计算机网络应用基础 80.0

2.0 王五 信息技术学院 计算机网络应用基础 81.0

3.0 李胜基 信息技术学院 计算机网络应用基础 82.0

4.0 五班古 信息技术学院 计算机网络应用基础 83.0

5.0 蔡诗芸 信息技术学院 计算机网络应用基础 84.0

java 通过poi读取excel数据存入mysql数据库中文乱码，怎么解决？

这问题应该有好几种可能性，首先用poi是否支持中文，是否有需要指定编码格式，还有就是mysql的字符编码设置，如果选了iso-8859-1，显然也不行，根据你的描述，显然在这读取、存储过程中，存在了iso-8859-1的西文编码

JAVA POI

下面是使用poi生成excel，读取可以参照生成的代码 public HSSFWorkbook importExcel(ListAssigneeItem list) { try { HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet s = wb.createSheet(); // 设置Sheet名 wb.setSheetName(0, "assignee_item"); for (short i = 0; i list.size() + 1; i++) { // 创建行 HSSFRow row = s.createRow(i); if (i == 0) { // 设置列标题 String[] fieldName = { "管理事项ID", "管理人类型", "管理人营业机构", "产品", "投资组合", "事项起始日期", "事项内容及处理情况", "状态", "委托事项名称" }; for (short j = 0; j 9; j++) { // 创建单元格 HSSFCell cell = row.createCell(j); // 设置单元格采用的字符集，避免中文乱码 cell.setEncoding(HSSFCell.ENCODING_UTF_16); // 为单元格赋值 cell.setCellValue(fieldName[j]); } } else { // 设置列内容 AssigneeItem ai = list.get(i - 1); String[] fieldValue = { ai.getItemManageId() + "", ai.getRoleType(), ai.getManagerBusiOrg(), ai.getProduct(), ai.getFund(), ai.getBeginDate(), ai.getItemContent(), ai.getStatus(), ai.getAssigneeItemName() }; for (short j = 0; j 9; j++) { // 创建单元格 HSSFCell cell = row.createCell(j); // 设置单元格采用的字符集，避免中文乱码 cell.setEncoding(HSSFCell.ENCODING_UTF_16); // 为单元格赋值 cell.setCellValue(fieldValue[j]); } } } return wb; } catch (Exception e) { e.printStackTrace(); } return null; }

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