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石祥
2025-07-05 18:12:04 +08:00
parent ec1d12a068
commit f447320453
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6
.lightly/settings.toml Normal file
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ports = []
[languages.java]
language = "java"
src_folder = "src/main/java/"
[languages.java.run]

6
JavaProject/.lightly/settings.toml Normal file
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ports = []
[languages.java]
language = "java"
src_folder = "src/main/java/"
[languages.java.run]

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JavaProject/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>JavaProject</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>SpringBootProject</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 引入poi -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.17</version>
</dependency>
<!-- 引入swagger相关jar包 -->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.8.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

13
JavaProject/src/main/java/com/example/demo/Application.java Normal file
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package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

98
JavaProject/src/main/java/com/example/demo/controller/ExcelConvertHtml.java Normal file
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package com.example.demo.controller;
public class ExcelConvertHtml {
public String static resolveExcel(MultipartFile file) throws Exception {
try {
File toFile = null;
if (file.equals("") || file.getSIze() <= 0) {
file = null;
} else {
InputStream ins = null;
ins = file.getInputStream():
toFile = new File(file.getOriginalFilename());
inputStreamToFile(ins, toFile);
ins.close();
}
// 获取数据
FileInputStream input = new FileInputStream(toFile);
Workbook workbook = new XSSFWorkbook(input);
Sheet sheet = workbook.getSheetAt(0);
// create html table
Element table = new Element(Tag.valueOf("table"), "");
table.attr("border", "1");
table.attr("cellspacing", "0");
table.attr("cellpadding", "0");
// Add column widths
Element colgroup = new Element(Tag.valueOf("colgroup"), "");
for (int i = 0; i < sheet.getRow(0).getLastCellNum(); i++) {
Element col = new Element(Tag.valueOf("col"), "");
col.attr("width", "150px");// set column width
colgroup.appendChild(col);
}
table.appendChild(colgroup);
// Add header row
Element thead = new Element(Tag.valueOf("thread"), "");
Element tr = new Element(Tag.valueOf("tr"), "");
tr.attr("bgcolor", "#CCCCCC");
for (int i = 0; i < 2; i++) {
Cell cell = sheet.getRow(0).getCell(i);
String value = cell.getStringCellValue();
Element th = new Element(Tag.valueOf("th"), "");
th.text(value);
if (i == 0) {
// Merge first two columns
th.attr("colspan", "2");
}
tr.appendChild(th);
}
for (int i = 2; i < sheet,getRow(0).getLastCellNum();
i++){
Cell cell = sheet.getRow(0).getCell(i);
String value = cell.getStringCellValue();
Element th = new Element(Tag.valueOf("th"), "");
th.text(value);
tr.appendChild(th);
}
thread.appendChild(tr);
table.appendChild(thread);
// Add data rows
Element tbody = new Element(Tag.valueOf("tbody"), "");
// for (int i = 1; i <= sheet.getLastRowNum(); i++) {
// Element trData
// }
for (int i = 1; i <= sheet.getLastRowNum(); i++) {
Element trData = new Element(Tag.valueOf("tr"), "");
for (int j = 0; j < sheet.getRow(i).getLastCellNum(); j++) {
Cell cell = sheet.getRow(i).getCell(j);
String value = "";
if (cell.getCellType() == CellType.NUMERIC) {
value = String.valueOf(cell.getNumericCellValue());
} else {
value = cell.getStringCellValue();
}
Element td = new Element(Tag.valueOf("td"), "");
td.text(value);
if (j < 2) {
td.attr("align", "left");
}
trData.appendChild(td);
}
tbody.appendChild(trData);
}
table.appendChild(tbody); // Convert to HTML
Document doc = new Document("");
doc.appendChild(table);
String html = doc.outerHtml();
// Write to file
FileWriter writer = new FileWriter(new File("output.html"));
writer.write(html);
writer.close();
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
}
}

14
JavaProject/src/main/java/com/example/demo/controller/HelloController.java Normal file
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package com.example.demo.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@Controller
@RestMapping
public class HelloController {
@GetMapping(value = "/")
public String index() {
return "Hello World!";
}
}

1
JavaProject/src/main/resources/application.properties Normal file
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13
JavaProject/src/test/java/com/example/demo/ApplicationTests.java Normal file
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package com.example.demo;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class ApplicationTests {
@Test
void contextLoads() {
}
}

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output.html Normal file
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<table border="1" cellspacing="0" cellpadding="5">
<colgroup>
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
<col width="150px">
</colgroup>
<thead>
<tr bgcolor="#CCCCCC">
<th colspan="2">主机名</th>
<th>管理IP</th>
<th>数据IP</th>
<th>所在资源池</th>
<th>操作系统</th>
<th>设备编码</th>
<th>所在楼宇</th>
<th>机房</th>
<th>机架</th>
<th>机位</th>
<th>设备序列号</th>
<th>配置信息</th>
<th>CPU型号</th>
<th>内存型号</th>
<th>内存数</th>
<th>vcore数</th>
<th>磁盘容量</th>
<th>磁盘详细信息</th>
<th>主机描述</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">hostname1</td>
<td align="left">127.0.0.1</td>
<td>10.10.10.1</td>
<td>第一资源池</td>
<td>CentOS</td>
<td>A01-01-101-1A01</td>
<td>A01</td>
<td>1</td>
<td>101</td>
<td>1A01</td>
<td>123456789</td>
<td>1*1C/1GB/1*1GSSD/1*1TBSATA</td>
<td>型号1</td>
<td>型号1</td>
<td>1GB</td>
<td>1</td>
<td>1TB</td>
<td>1*1TB</td>
<td>模板主机</td>
</tr>
<tr>
<td align="left">hostname2</td>
<td align="left">127.0.0.2</td>
<td>10.10.10.2</td>
<td>第二资源池</td>
<td>CentOS</td>
<td>A01-01-101-1A02</td>
<td>A02</td>
<td>1</td>
<td>101</td>
<td>1A02</td>
<td>223456789</td>
<td>1*1C/1GB/1*1GSSD/1*1TBSATA</td>
<td>型号2</td>
<td>型号2</td>
<td>1GB</td>
<td>1</td>
<td>1TB</td>
<td>1*1TB</td>
<td>模板主机</td>
</tr>
</tbody>
</table>

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pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>JavaProject</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>SpringBootProject</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 引入poi -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.17</version>
</dependency>
<!-- 引入swagger相关jar包 -->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
</dependency>
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.10.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

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src/main/java/com/example/demo/Application.java Normal file
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package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

42
src/main/java/com/example/demo/CalculatorPrefectNumber.java Normal file
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package com.example.demo;
/**
* @author shixiang
* @date 2025/7/1 14:01
*/
public class CalculatorPrefectNumber {
public static int countPrefectNumber(int n) {
if (n < 6) {
return 0;
}
int count = 0;
for (int num = 6; num <= n; num++) {
if (isPrefectNumber(num)) {
count++;
}
}
return count;
}
private static boolean isPrefectNumber(int num) {
if (num < 2) {
return false;
}
int sum = 1;
for (int i = 2; i * i <= num; i++) {
if (num % i == 0) {
sum += i;
if (i != num / i) {
sum += num / i;
}
}
}
return num == sum;
}
public static void main(String[] args) {
int i = countPrefectNumber(6);
int i1 = countPrefectNumber(28);
System.out.println("i=" + i + ",i1=" + i1);
}
}

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src/main/java/com/example/demo/LinkedListRemover.java Normal file
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package com.example.demo;
/**
* @author shixiang
* @date 2025/7/1 13:36
*/
// 单向链表节点类（使用无参构造）
class ListNode {
int val;
ListNode next;
// 无参构造函数
public ListNode() {
}
// 带值的构造函数（可选）
public ListNode(int val) {
this.val = val;
}
}
public class LinkedListRemover {
public ListNode removeNthFromEnd(ListNode head, int n) {
// 创建虚拟头节点（使用无参构造）
ListNode dummy = new ListNode();
dummy.next = head; // 指向实际头节点
// 初始化快慢指针
ListNode fast = dummy;
ListNode slow = dummy;
// 快指针先前进n步
for (int i = 0; i < n; i++) {
fast = fast.next;
}
// 同时移动双指针，直到快指针到达最后一个节点
while (fast.next != null) {
fast = fast.next;
slow = slow.next;
}
// 删除目标节点：跳过要移除的节点
slow.next = slow.next.next;
// 返回新的头节点（虚拟头节点的下一个）
return dummy.next;
}
// 辅助方法：打印链表（用于测试）
public static void printList(ListNode head) {
ListNode current = head;
while (current != null) {
System.out.print(current.val + " ");
current = current.next;
}
System.out.println();
}
// 测试用例
public static void main(String[] args) {
// 创建链表 1->2->3->4->5
ListNode head = new ListNode();
head.val = 1;
head.next = new ListNode();
head.next.val = 2;
head.next.next = new ListNode();
head.next.next.val = 3;
head.next.next.next = new ListNode();
head.next.next.next.val = 4;
head.next.next.next.next = new ListNode();
head.next.next.next.next.val = 5;
LinkedListRemover remover = new LinkedListRemover();
System.out.print("原始链表: ");
printList(head); // 输出: 1 2 3 4 5
// 移除倒数第2个节点（值为4）
head = remover.removeNthFromEnd(head, 4);
System.out.print("移除后: ");
printList(head); // 输出: 1 2 3 5
// 测试边界情况：移除头节点（倒数第4个）
head = remover.removeNthFromEnd(head, 4);
System.out.print("移除头节点后: ");
printList(head); // 输出: 2 3 5
// 测试边界情况：移除尾节点（倒数第3个）
head = remover.removeNthFromEnd(head, 3);
System.out.print("移除尾节点后: ");
printList(head); // 输出: 3 5
}
}

44
src/main/java/com/example/demo/PrefectNumberCalculator.java Normal file
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package com.example.demo;
/**
* @author shixiang
* @date 2025/7/1 12:37
*/
public class PrefectNumberCalculator {
public static int countPerfectNumber(int n) {
if (n < 6) {
return 0;
}
int count = 0;
for (int num = 6; num <= n; num++) {
if (isPerfectNumber(num)) {
count++;
}
}
return count;
}
private static boolean isPerfectNumber(int num) {
if (num < 2) {
return false;
}
int sum = 1;
for (int i = 2; i * i <= num; i++) {
if (num % i == 0) {
sum += i;
if (i != num / i) {
sum += num / i;
}
}
}
return sum == num;
}
public static void main(String[] args) {
int i1 = countPerfectNumber(6);
int i = countPerfectNumber(28);
int i2 = countPerfectNumber(29);
System.out.println("i1" + i1 + ",i2=" + i2 + ",i=" + i);
}
}

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src/main/java/com/example/demo/RemoveReversePosition.java Normal file
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package com.example.demo;
/**
* 移除指定倒数位置的单向链表位置
*
* @author shixiang
* @date 2025/7/3 10:26
*/
public class RemoveReversePosition {
static class ListNode {
int val;
ListNode next;
// 无参构造函数
public ListNode() {
}
// 带值的构造函数（可选）
public ListNode(int val) {
this.val = val;
}
}
/**
* 具体思路：我们通过快慢指针（双指针方式）做处理即可
* 比如1-2-3-4-5 n=2 ==>本质上就是取第4位的节点并删除=》其实就是将1-2-3-5 即找到第三个节点，然后使用current.next= current.next.next;
* 其实本质上就是找到倒数n-1的位置，所以假设链表长度为L 那么这个位置就是L-n(比如L等于5，那么n=2，即需要找到第三个的位置即L-n
*
* @param head
* @param n
* @return
*/
public static ListNode removeList(ListNode head, int n) {
// 定义一个虚拟节点用于关联最初始的链表
ListNode dummp = new ListNode();
dummp.next = head;
ListNode fast = dummp;
ListNode slow = dummp;
//那么我们先移动fast的位置n个位置 此时fast的后续位置为L-N；
for (int i = 0; i < n; i++) {
fast = fast.next;
}
// 所以这个时候我们只需要判断fast.next!=null,然后同时移动fast和slow即可
while (fast.next != null) {
fast = fast.next;
slow = slow.next;
}
// 此时slow的节点位置在L-N上
// 那么只需要去删除slow的下一节点位置即可
slow.next = slow.next.next;
// 注意这里slow节点与最初始的时候dummp定义的引用地址保持一致。
return dummp.next;
}
public static void main(String[] args) {
// 1,2,3,4,5 n =2 =>1,2,3,5
ListNode test1 = new ListNode(1);
test1.next = new ListNode(2);
test1.next.next = new ListNode(3);
test1.next.next.next = new ListNode(4);
test1.next.next.next.next = new ListNode(5);
printList(test1);
ListNode listNode1 = removeList(test1, 2);
printList(listNode1);
ListNode test2 = new ListNode(1);
test2.next = new ListNode(2);
printList(test2);
ListNode listNode2 = removeList(test2, 1);
printList(listNode2);
ListNode test3 = new ListNode(1);
printList(test3);
ListNode listNode3 = removeList(test3, 1);
printList(listNode3);
}
// 辅助方法：打印链表（用于测试）
public static void printList(ListNode head) {
ListNode current = head;
if (current == null) {
System.out.print("[]");
return;
}
while (current != null) {
System.out.print(current.val + " ");
current = current.next;
}
System.out.println();
}
}

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src/main/java/com/example/demo/Test.java Normal file
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package com.example.demo;
/**
* @author shixiang
* @date 2025/7/1 16:04
*/
public class Test {
// n= 1 1
// n = 2 2
// n = 3 3
// n = 4 5
public static int getMethod(int n) {
if (n <= 1) {
return 1;
}
if (n == 2) {
return 2;
}
int method = getMethod(n - 1);
int method1 = getMethod(n-2);
return method+method1;
}
public static void main(String[] args) {
int method = getMethod(5);
}
}

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src/main/java/com/example/demo/TestLinkedListRemover.java Normal file
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package com.example.demo;
/**
* @author shixiang
* @date 2025/7/1 13:51
*/
public class TestLinkedListRemover {
// 单向链表节点类（使用无参构造）
static class ListNode {
int val;
ListNode next;
// 无参构造函数
public ListNode() {
}
// 带值的构造函数（可选）
public ListNode(int val) {
this.val = val;
}
}
public static void main(String[] args) {
// 创建链表 1->2->3->4->5
ListNode head = new ListNode();
head.val = 1;
head.next = new ListNode();
head.next.val = 2;
head.next.next = new ListNode();
head.next.next.val = 3;
head.next.next.next = new ListNode();
head.next.next.next.val = 4;
head.next.next.next.next = new ListNode();
head.next.next.next.next.val = 5;
System.out.print("原始链表: ");
printList(head); // 输出: 1 2 3 4 5
ListNode listNode = removeList(head, 2);
System.out.print("移除指定位置: ");
printList(listNode); // 输出: 1 2 3 4 5
ListNode head1 = new ListNode();
head1.val = 1;
head1.next = new ListNode();
head1.next.val = 2;
ListNode listNode1 = removeList(head1, 1);
System.out.print("移除指定位置: ");
printList(listNode1);
}
// 辅助方法：打印链表（用于测试）
public static void printList(ListNode head) {
ListNode current = head;
while (current != null) {
System.out.print(current.val + " ");
current = current.next;
}
System.out.println();
}
public static ListNode removeList(ListNode node, int n) {
ListNode dumpNode = new ListNode();
dumpNode.next = node;
ListNode fast = dumpNode;
ListNode slow = dumpNode;
// 先移动n步
for (int i = 0; i < n; i++) {
fast = fast.next;
}
// 这里移动慢指针L-n步骤
while (fast.next != null) {
fast = fast.next;
slow = slow.next;
}
slow.next = slow.next.next;
return dumpNode.next;
}
}

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src/main/java/com/example/demo/controller/ExcelConvertHtml.java Normal file
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//package com.example.demo.controller;
//
//import org.apache.poi.ss.usermodel.Cell;
//import org.apache.poi.ss.usermodel.CellType;
//import org.apache.poi.ss.usermodel.Sheet;
//import org.apache.poi.ss.usermodel.Workbook;
//import org.apache.poi.xssf.usermodel.XSSFWorkbook;
//import org.jsoup.*;
//import org.jsoup.nodes.*;
//import org.jsoup.parser.*;
//import org.jsoup.select.*;
//import org.springframework.web.multipart.MultipartFile;
//
//import java.io.File;
//import java.io.FileInputStream;
//import java.io.FileWriter;
//import java.io.InputStream;
//
//public class ExcelConvertHtml {
//
// public String static resolveExcel(MultipartFile file) throws Exception {
// try {
// File toFile = null;
// if (file.equals("") || file.getSize() <= 0) {
// file = null;
// } else {
// InputStream ins = null;
// ins = file.getInputStream();
// toFile = new File(file.getOriginalFilename());
// inputStreamToFile(ins, toFile);
// ins.close();
// }
// // 获取数据
// FileInputStream input = new FileInputStream(toFile);
// Workbook workbook = new XSSFWorkbook(input);
// Sheet sheet = workbook.getSheetAt(0);
// // create html table
// Element table = new Element(Tag.valueOf("table"), "");
// table.attr("border", "1");
// table.attr("cellspacing", "0");
// table.attr("cellpadding", "0");
// // Add column widths
// Element colgroup = new Element(Tag.valueOf("colgroup"), "");
// for (int i = 0; i < sheet.getRow(0).getLastCellNum(); i++) {
// Element col = new Element(Tag.valueOf("col"), "");
// col.attr("width", "150px");// set column width
// colgroup.appendChild(col);
// }
// table.appendChild(colgroup);
//
// // Add header row
// Element thead = new Element(Tag.valueOf("thread"), "");
// Element tr = new Element(Tag.valueOf("tr"), "");
// tr.attr("bgcolor", "#CCCCCC");
// for (int i = 0; i < 2; i++) {
// Cell cell = sheet.getRow(0).getCell(i);
// String value = cell.getStringCellValue();
// Element th = new Element(Tag.valueOf("th"), "");
// th.text(value);
// if (i == 0) {
// // Merge first two columns
// th.attr("colspan", "2");
// }
// tr.appendChild(th);
// }
// for (int i = 2; i < sheet.getRow(0).getLastCellNum(); i++) {
// Cell cell = sheet.getRow(0).getCell(i);
// String value = cell.getStringCellValue();
// Element th = new Element(Tag.valueOf("th"), "");
// th.text(value);
// tr.appendChild(th);
// }
// thread.appendChild(tr);
// table.appendChild(thread);
//
// // Add data rows
// Element tbody = new Element(Tag.valueOf("tbody"), "");
// // for (int i = 1; i <= sheet.getLastRowNum(); i++) {
// // Element trData
// // }
// for (int i = 1; i <= sheet.getLastRowNum(); i++) {
// Element trData = new Element(Tag.valueOf("tr"), "");
// for (int j = 0; j < sheet.getRow(i).getLastCellNum(); j++) {
// Cell cell = sheet.getRow(i).getCell(j);
// String value = "";
// if (cell.getCellType() == CellType.NUMERIC) {
// value = String.valueOf(cell.getNumericCellValue());
// } else {
// value = cell.getStringCellValue();
// }
// Element td = new Element(Tag.valueOf("td"), "");
// td.text(value);
// if (j < 2) {
// td.attr("align", "left");
// }
// trData.appendChild(td);
// }
// tbody.appendChild(trData);
// }
// table.appendChild(tbody); // Convert to HTML
// Document doc = new Document("");
// doc.appendChild(table);
// String html = doc.outerHtml();
// // Write to file
// FileWriter writer = new FileWriter(new File("output.html"));
// writer.write(html);
// writer.close();
// } catch (Exception ex) {
// System.out.println(ex.getMessage());
// }
// }
//}
//}

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src/main/java/com/example/demo/controller/HelloController.java Normal file
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package com.example.demo.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@Controller
@RequestMapping
public class HelloController {
@GetMapping(value = "/")
public String index() {
return "Hello World!";
}
}

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src/main/java/com/example/demo/service/ExcelToHtmlConverter.java Normal file
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package com.example.demo.service;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.parser.Tag;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
public class ExcelToHtmlConverter {
public static void main(String[] args) {
try {
// C:\\Users\\Lenovo\\Desktop\\1
FileInputStream input = new FileInputStream(new File("D:\\uploads\\input.xlsx"));
Workbook workbook = new XSSFWorkbook(input);
Sheet sheet = workbook.getSheetAt(0);
// Create HTML table
Element table = new Element(Tag.valueOf("table"), "");
table.attr("border", "1");
table.attr("cellspacing", "0");
table.attr("cellpadding", "10");
// Add column widths
Element colgroup = new Element(Tag.valueOf("colgroup"), "");
for (int i = 0; i < sheet.getRow(0).getLastCellNum(); i++) {
Element col = new Element(Tag.valueOf("col"), "");
// Set column width
col.attr("width", "100px");
colgroup.appendChild(col);
}
table.appendChild(colgroup);
// Add header row
Element thead = new Element(Tag.valueOf("thead"), "");
Element tr = new Element(Tag.valueOf("tr"), "");
tr.attr("bgcolor", "#CCCCCC"); // Set background color
for (int i = 0; i < 2; i++) {
Cell cell = sheet.getRow(0).getCell(i);
String value = cell.getStringCellValue();
Element th = new Element(Tag.valueOf("th"), "");
th.text(value);
if (i == 0) {
th.attr("colspan", "2"); // Merge first two columns
}
tr.appendChild(th);
}
for (int i = 2; i < sheet.getRow(0).getLastCellNum(); i++) {
Cell cell = sheet.getRow(0).getCell(i);
String value = cell.getStringCellValue();
Element th = new Element(Tag.valueOf("th"), "");
th.text(value);
tr.appendChild(th);
}
thead.appendChild(tr);
table.appendChild(thead);
// Add data rows
Element tbody = new Element(Tag.valueOf("tbody"), "");
for (int i = 1; i <= sheet.getLastRowNum(); i++) {
Element trData = new Element(Tag.valueOf("tr"), "");
for (int j = 0; j < sheet.getRow(i).getLastCellNum(); j++) {
Cell cell = sheet.getRow(i).getCell(j);
String value = "";
if (cell.getCellTypeEnum() == CellType.NUMERIC) {
value = String.valueOf(cell.getNumericCellValue());
} else {
value = cell.getStringCellValue();
}
Element td = new Element(Tag.valueOf("td"), "");
td.text(value);
if (j < 2) {
td.attr("align", "left");
}
trData.appendChild(td);
}
tbody.appendChild(trData);
}
table.appendChild(tbody);
// Convert to HTML
Document doc = new Document("");
doc.appendChild(table);
String html = doc.outerHtml();
// Write to file
FileWriter writer = new FileWriter(new File("D:\\uploads\\output.html"));
writer.write(html);
writer.close();
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
}

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package com.example.demo;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class ApplicationTests {
@Test
void contextLoads() {
}
}