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【修改】 C语言因为电脑编码读取不到文件内容

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This commit is contained in:
dlaren
2025-07-16 09:27:53 +08:00
parent eb971b8c26
commit 7d796b123c
6 changed files with 48 additions and 20 deletions
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2
src/main/java/com/example/exam/exam/controller/auto/AutoController.java
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@@ -73,7 +73,7 @@ public class AutoController {
* @return 判分结果
*/
@PostMapping("/judgementForC")
public Result<BigDecimal> judgementForC(@RequestBody StuInfoVo stuInfoVo){
public Result<BigDecimal> judgementForC(@RequestBody StuInfoVo stuInfoVo) throws IOException {
return Result.success(autoService.autoForC(stuInfoVo));
}
// WPS-WORD

3
src/main/java/com/example/exam/exam/service/autoforc/AutoForCService.java
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@@ -2,6 +2,7 @@ package com.example.exam.exam.service.autoforc;
import com.example.exam.exam.controller.auto.vo.StuInfoVo;
import java.io.IOException;
import java.math.BigDecimal;
/**
@@ -13,5 +14,5 @@ public interface AutoForCService {
* 自动判题 C语言
* @param stuInfoVo 学生信息
*/
BigDecimal autoForC(StuInfoVo stuInfoVo);
BigDecimal autoForC(StuInfoVo stuInfoVo) throws IOException;
}

6
src/main/java/com/example/exam/exam/service/autoforc/AutoForCServiceImpl.java
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@@ -12,6 +12,7 @@ import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.List;
import java.util.Optional;
@@ -37,7 +38,7 @@ public class AutoForCServiceImpl implements AutoForCService {
* @return 是否通过
*/
@Override
public BigDecimal autoForC(StuInfoVo stuInfoVo) {
public BigDecimal autoForC(StuInfoVo stuInfoVo) throws IOException {
SystemTenant systemTenant = systemTenantService.getId(stuInfoVo.getSchoolName());
BigDecimal score = new BigDecimal(0);
// 0、获取到试卷信息（试卷详情）
@@ -67,10 +68,11 @@ public class AutoForCServiceImpl implements AutoForCService {
EducationPaperQu educationPaperQu = results.get();
String quScore = educationPaperScheme.getQuScores();
ExamQuestion examQuestion = examQuestionService.selectExamQuestionByQuId(quId);
System.out.println(wjFile);
File[] lastFiles = wjFile.listFiles();
for (File lastFile : lastFiles) {
System.out.println(lastFile);
if (lastFile.getName().contains(".c")) {
System.out.println("开始C语言判分"+quNumber);
String judgementStr = "<p>-----------------------------------------------------------</p>";
judgementStr += "<p>试题序号：" + educationPaperQu.getSort() + "</p>";
judgementStr += "<p>试题编号：" + examQuestion.getQuNum() + "</p>";

4
src/main/java/com/example/exam/exam/service/c/JudgementService.java
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@@ -4,6 +4,8 @@ package com.example.exam.exam.service.c;
import com.example.exam.exam.dal.ExamQuestion;
import com.example.exam.exam.dal.SourceAndText;
import java.io.IOException;
/**
* 判分逻辑集合
*
@@ -19,7 +21,7 @@ public interface JudgementService {
* @param score 分数
* @return 返回判分
*/
public SourceAndText ProgrammingC(double score, String pathC, String fileName, ExamQuestion examQuestion, String judgementStr);
public SourceAndText ProgrammingC(double score, String pathC, String fileName, ExamQuestion examQuestion, String judgementStr) throws IOException;
}

4
src/main/java/com/example/exam/exam/service/c/JudgementServiceImpl.java
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@@ -9,6 +9,7 @@ import com.example.exam.exam.utils.c.LogFileUtils;
import org.springframework.stereotype.Service;
import com.example.exam.exam.dal.SourceAndText;
import java.io.IOException;
import java.util.*;
/**
@@ -28,7 +29,7 @@ public class JudgementServiceImpl implements JudgementService
* @return 返回判分
*/
@Override
public SourceAndText ProgrammingC(double score, String pathC, String fileName, ExamQuestion examQuestion, String judgementStr) {
public SourceAndText ProgrammingC(double score, String pathC, String fileName, ExamQuestion examQuestion, String judgementStr) throws IOException {
SourceAndText sourceAndText = new SourceAndText();
// 关键字比对，超过权重-测试用例/运行（测试用例全对，直接满分-不全对）-结果，不超过权重只给关键字几个的分
// 获取该题有多少分
@@ -66,6 +67,7 @@ public class JudgementServiceImpl implements JudgementService
// 创建log文件txt，用于记录
// LogFileUtils.createFile(pathC + "/log.txt");
System.out.println(pathC + " --- " + fileName);
String code = JudgementCUtils.readFile(pathC, fileName);
// LogFileUtils.writeLine("✅ 系统开始读取学生考试文件：" + code);
judgementStr = HtmlAppender.appendHtmlLine(judgementStr, "✅ 系统开始读取学生考试文件：" + code);

49
src/main/java/com/example/exam/exam/utils/c/JudgementCUtils.java
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@@ -2,7 +2,10 @@ package com.example.exam.exam.utils.c;
import javax.swing.*;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.charset.MalformedInputException;
import java.nio.charset.StandardCharsets;
import java.nio.charset.UnmappableCharacterException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
@@ -190,35 +193,53 @@ public class JudgementCUtils
* @param filePath 文件路径
* @return 文件内容
*/
public static String readFile(String filePath, String fileName) {
// 创建一个 Path 对象，指向包含 C 语言文件的文件夹
Path folderPath = Paths.get(filePath);
public static String readFile(String filePath, String fileName) throws IOException {
Path folderPath = Paths.get(filePath).normalize().toAbsolutePath();
// 判断路径是否存在
if (!Files.exists(folderPath)) {
return null; // 或者 return null，或者 throw new RuntimeException(...)，看你的函数定义
throw new FileNotFoundException("路径不存在: " + folderPath);
}
// 使用 StringBuilder 来累积所有读取到的代码内容
StringBuilder codeBuilder = new StringBuilder();
final boolean[] fileFound = {false};
try (Stream<Path> paths = Files.walk(folderPath)) {
paths.filter(Files::isRegularFile)
.filter(path -> path.getFileName().toString().equalsIgnoreCase(fileName))
.filter(path -> path.getFileName().toString().equals(fileName)) // 精确匹配
.forEach(path -> {
fileFound[0] = true;
try {
List<String> lines = Files.readAllLines(path, StandardCharsets.UTF_8);
for (String line : lines) {
codeBuilder.append("\n").append(line);
Charset charset = detectCharset(path);
List<String> lines = Files.readAllLines(path, charset);
lines.forEach(line -> {
codeBuilder.append(line).append("\n");
System.out.println(" " + line);
}
});
} catch (IOException e) {
// LogFileUtils.writeLine("❗ 无法读取文件: " + path);
throw new UncheckedIOException("无法读取文件: " + path, e);
}
});
} catch (IOException e) {
return null;
}
if (!fileFound[0]) {
throw new FileNotFoundException("未找到文件: " + fileName + " 在路径: " + folderPath);
}
return codeBuilder.toString();
}
private static Charset detectCharset(Path path) throws IOException {
// 常见中文编码列表
Charset[] candidates = {StandardCharsets.UTF_8, Charset.forName("GBK"),
StandardCharsets.ISO_8859_1, StandardCharsets.UTF_16};
for (Charset charset : candidates) {
try (BufferedReader reader = Files.newBufferedReader(path, charset)) {
reader.read();
return charset; // 如果能正常读取第一个字符，可能是正确编码
} catch (MalformedInputException | UnmappableCharacterException e) {
// 尝试下一个编码
}
}
return StandardCharsets.UTF_8; // 默认回退
}
}