Java自动化测试(Excel文件解析 9)
Excel操作
Maven中添加读取excel的第三方包POI
官网:https://poi.apache.org/
Maven:https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml
org.apache.poi
poi-ooxml
4.1.2
新建一个测试的excel
exceldemo
将excel放到：src/test/resources
读取excel步骤
打开excel
获取所有sheet
获取指定sheet
获取指定row
指定的cell单元格
获取单元格内容
package com.zhongxin.day10.excel;
import org.apache.poi.ss.usermodel.*;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class ReadDemo {
public static void main(String[] args) {
//读取excel
FileInputStream fis = null;
try {
// 1. 打开excel
fis = new FileInputStream("src/test/resources/demo.xlsx");
// 2. 获取所有sheet
Workbook sheets = WorkbookFactory.create(fis);
// 3. 获取指定sheet
Sheet sheet = sheets.getSheet("Sheet1"); // 通过名称
Sheet sheet1 = sheets.getSheetAt(0); // 通过索引
// 4. 获取指定row
Row row = sheet.getRow(2);
// 5. 指定的cell单元格
Cell cell = row.getCell(1, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
// 6. 获取单元格内容
String cellValue = cell.getStringCellValue();
System.out.println(cellValue);
fis.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
读取excel中全部内容
package com.zhongxin.day10.excel;
import org.apache.poi.ss.usermodel.*;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class ReadDemo2 {
public static void main(String[] args) {
FileInputStream fis = null;
try {
// 1. 打开excel
fis = new FileInputStream("src/test/resources/demo.xlsx");
// 2. 获取所有sheet
Workbook sheets = WorkbookFactory.create(fis);
// 3. 获取指定sheet
Sheet sheet = sheets.getSheet("Sheet1"); // 通过名称
Sheet sheet1 = sheets.getSheetAt(0); // 通过索引
// 4. 获取所有row
// 4.1 增强for
for (Row row : sheet) {
for (Cell cell : row) {
// 强行转换单元格类型
cell.setCellType(CellType.STRING);
String cellValue = cell.getStringCellValue();
System.out.print(cellValue + ",");
}
System.out.println();
}
// 4.2 普通for
int lastRowNum = sheet.getLastRowNum();
for (int i = 0; i <= lastRowNum; i++) {
Row row = sheet.getRow(i);
int lastCellNum = row.getLastCellNum();
for (int j = 0; j < lastCellNum; j++) {
Cell cell = row.getCell(j, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
cell.setCellType(CellType.STRING);
String cellValue = cell.getStringCellValue();
System.out.print(cellValue + ",");
}
System.out.println();
}
fis.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
增强for
for (Row row : sheet) {
for (Cell cell : row) {
// 强行转换单元格类型
cell.setCellType(CellType.STRING);
String cellValue = cell.getStringCellValue();
System.out.print(cellValue + ",");
}
System.out.println();
}
普通for
int lastRowNum = sheet.getLastRowNum();
for (int i = 0; i <= lastRowNum; i++) {
Row row = sheet.getRow(i);
int lastCellNum = row.getLastCellNum();
for (int j = 0; j < lastCellNum; j++) {
Cell cell = row.getCell(j, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
cell.setCellType(CellType.STRING);
String cellValue = cell.getStringCellValue();
System.out.print(cellValue + ",");
}
System.out.println();
}
excel 写入
写=创建excel+创建sheet+创建row+创建cell
修改操作=读取+写入
package com.zhongxin.day10.excel;
import org.apache.poi.ss.usermodel.*;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class WriteDemo {
public static void main(String[] args) throws IOException {
// excel 写入
// 1.打开excel
FileInputStream fis = new FileInputStream("src/test/resources/demo.xlsx");
// 2. 获取所有sheet
Workbook sheets = WorkbookFactory.create(fis);
// 3. 获取指定sheet
Sheet sheet = sheets.getSheetAt(0);
// 4. 获取指定row
Row row = sheet.getRow(1);
// 5. 获取指定cell
Cell cell = row.getCell(2, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
// 6. 修改值
cell.setCellValue(99);
// 7. 流输出对象
FileOutputStream fos = new FileOutputStream("src/test/resources/demo.xlsx");
// 8. 把java内存中内容写入excel文件中
sheets.write(fos);
// 9. 关流
fis.close();
fos.close();
}
}
XML操作
Xml:扩展性标记语言
特点：可扩展性，在遵循xml语法的前提下支持自定义和修改
xml语法
声明
根元素
XML必须包含根元素，它是所有其他元素的父元素
所有元素有开始就有结束
大小写敏感
嵌套使用需要注意嵌套的顺序
张三
18
100
dom4j
dom4j
dom4j
1.6.1
xml读取(了解)
package com.zhongxin.day10.xml;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;
public class XmlDemo {
public static void main(String[] args) throws IOException, DocumentException {
// xml读取
// 1. xml读取对象
SAXReader reader = new SAXReader();
FileInputStream fis = new FileInputStream("src/test/resources/Student.xml");
// 2. 整颗dom树
Document document = reader.read(fis);
// 3. 获取root标签
Element rootElement = document.getRootElement();
// 4. 获取root标签下的一级子标签
List subElements1 = rootElement.elements();
for (Element element : subElements1) {
System.out.println(element.getName() + "====" + element.getData());
// 5. 获取root标签下的二子标签
List subElement2 = element.elements();
if (subElement2 != null && subElement2.size() > 0) {
for (Element element1 : subElement2) {
System.out.println(element1.getName() + "====" + element1.getData());
}
}
}
fis.close();
}
}