【修改】 C语言使用TCC进行编译，无需配置环境变量

src/main/java/com/example/exam/exam/service/c/JudgementServiceImpl.java

@@ -5,12 +5,12 @@ import com.example.exam.exam.dal.ExamQuestionAnswer;
 import com.example.exam.exam.dal.ExamQuestionKeyword;
 import com.example.exam.exam.utils.HtmlAppender;
 import com.example.exam.exam.utils.c.JudgementCUtils;
-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.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -123,7 +123,9 @@ public class JudgementServiceImpl implements JudgementService
                     // 每个选项分值 = 总分 / 总权重
                     true_number += 1;
                     key_score += one_keyword_score * Integer.parseInt((String) item.get("score_rate"));
-                    judgementStr = HtmlAppender.appendHtmlLine(judgementStr, "✅ 关键字比对：" + item.get("text") + " -- 正确 -- 得分：" + one_keyword_score * Integer.parseInt((String) item.get("score_rate")));
+                    judgementStr = HtmlAppender.appendHtmlLine(judgementStr, "✅ 关键字比对：" + item.get("text") + " -- 正确 -- 得分：" +
+                            new BigDecimal(one_keyword_score * Integer.parseInt((String) item.get("score_rate")))
+                                    .setScale(2, RoundingMode.HALF_UP));
                 } else {
                     // 关键字不正确
                     judgementStr = HtmlAppender.appendHtmlLine(judgementStr, "❌ 关键字比对：" + item.get("text") + " -- 错误 -- 得分：0");
@@ -150,7 +152,7 @@ public class JudgementServiceImpl implements JudgementService
                     Map<String, Object> item = new HashMap<>();
 
                     // 使用C99 运行并得出结果
-                    String code_return = JudgementCUtils.run_code(pathC,code, examQuestionAnswer.getContentIn(),"-std=c99",null);
+                    String code_return = JudgementCUtils.run_codes(pathC,code, examQuestionAnswer.getContentIn(),"-std=c99",null);
                     if (!isPassIndex && !code_return.contains("error")) {
                         // 编译没有报错，加上编译分数
                         totalScore += pass_score;
@@ -226,7 +228,7 @@ public class JudgementServiceImpl implements JudgementService
                 boolean isPassIndex = false;
                 for (ExamQuestionAnswer examQuestionAnswer : examQuestion.getAnswerList()) {
                     // 使用C99 运行并得出结果
-                    String code_return = JudgementCUtils.run_code(pathC,code, null,"-std=c99",null);
+                    String code_return = JudgementCUtils.run_codes(pathC,code, null,"-std=c99",null);
                     if (!isPassIndex && !code_return.contains("error")) {
                         // 编译没有报错，加上编译分数
                         totalScore += pass_score;
@@ -277,7 +279,7 @@ public class JudgementServiceImpl implements JudgementService
                 judgementStr = HtmlAppender.appendHtmlLine(judgementStr, "✅ 使用c99标准进行编译...");
 
                 // 使用C99 运行并得出结果
-                String code_return = JudgementCUtils.run_code(pathC,code,null,"-std=c99", "编译通过运行");
+                String code_return = JudgementCUtils.run_codes(pathC,code,null,"-std=c99", "编译通过运行");
                 if (!code_return.contains("error")) {
                     // 编译没有报错，加上编译分数
                     totalScore += pass_score;
@@ -331,4 +333,6 @@ public class JudgementServiceImpl implements JudgementService
     private static int countOccurrences(String str, String subStr) {
         return str.split(subStr, -1).length - 1;
     }
+
+
 }

src/main/java/com/example/exam/exam/utils/c/JudgementCUtils.java

@@ -9,6 +9,7 @@ import java.nio.charset.UnmappableCharacterException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.*;
 import java.util.stream.Stream;
@@ -40,6 +41,8 @@ public class JudgementCUtils
             try (FileWriter writer = new FileWriter(file)) {
                 writer.write(code);
             }
+            
+            
 
             // 编译代码
             ProcessBuilder compileBuilder = new ProcessBuilder("gcc", standard, programC, "-o", programOut);
@@ -115,79 +118,101 @@ public class JudgementCUtils
             return "运行 C 代码时出错：" + ex.getMessage();
         }
     }
-
+    public static String run_codes(String pathC, String code, String input, String standard, String text) {
-    /**
-     * 运行C语言代码,出题测试运行
-     * @param code C语言代码
-     * @param standard 编译版本 C99
-     * @return 运行结果
-     */
-    public static String run_test_code(String code, String standard) {
         try {
-            // 写入 C 语言源码到文件
+            boolean hasInput = code.contains("scanf") || code.contains("fgets") || code.contains("getchar");
-            File file = new File("program.c");
+
-            try (FileWriter writer = new FileWriter(file)) {
+            File workDir = new File(pathC);
+            if (!workDir.exists()) workDir.mkdirs();
+
+            boolean isWindows = System.getProperty("os.name").toLowerCase().contains("win");
+            String programC = new File(workDir, "program.c").getAbsolutePath();
+            String programOut = new File(workDir, isWindows ? "program.exe" : "program.out").getAbsolutePath();
+
+            // 写入 C 源码
+            try (FileWriter writer = new FileWriter(programC)) {
                 writer.write(code);
             }
 
-            // 编译 C 代码
+            // jar 所在目录
-            ProcessBuilder compileBuilder = new ProcessBuilder("gcc", standard, "program.c", "-o", "program.out");
+            String homeDir = System.getProperty("user.dir");
+            File tccExe = new File(homeDir, isWindows ? "tcc/tcc.exe" : "tcc/tcc");
+            if (!tccExe.exists()) {
+                return "❌ 没有找到 tcc，请确认在 jar 同级目录下有 tcc 文件夹";
+            }
+
+            // -std 参数
+            String stdFlag = null;
+            if (standard != null && !standard.trim().isEmpty()) {
+                String s = standard.trim();
+                stdFlag = s.startsWith("-std=") ? s : ("-std=" + s);
+            }
+
+            // 编译命令
+            ProcessBuilder compileBuilder;
+            if (stdFlag == null) {
+                compileBuilder = new ProcessBuilder(tccExe.getAbsolutePath(), programC, "-o", programOut);
+            } else {
+                compileBuilder = new ProcessBuilder(tccExe.getAbsolutePath(), stdFlag, programC, "-o", programOut);
+            }
+            compileBuilder.directory(workDir);
             compileBuilder.redirectErrorStream(true);
+
             Process compileProcess = compileBuilder.start();
-
             StringBuilder compileOutput = new StringBuilder();
-            try (BufferedReader compileReader = new BufferedReader(new InputStreamReader(compileProcess.getInputStream()))) {
+            try (BufferedReader br = new BufferedReader(new InputStreamReader(compileProcess.getInputStream(), StandardCharsets.UTF_8))) {
                 String line;
-                while ((line = compileReader.readLine()) != null) {
+                while ((line = br.readLine()) != null) compileOutput.append(line).append("\n");
-                    compileOutput.append(line).append("\n");
-                }
             }
-
             int compileResult = compileProcess.waitFor();
-
+            if (compileResult != 0 || !new File(programOut).exists()) {
-            // 检查编译是否成功
+                return "❌ 编译失败，输出：\n" + compileOutput;
-            String outputLower = compileOutput.toString().toLowerCase();
-            if (outputLower.contains("error:") || !Files.exists(Paths.get("program.out"))) {
-                return "编译失败，输出：\n" + compileOutput.toString();
             }
 
-            // 运行程序并添加超时机制
+            // 运行
-            ProcessBuilder runBuilder = new ProcessBuilder("./program.out");
+            ProcessBuilder runBuilder = new ProcessBuilder(programOut);
+            runBuilder.directory(workDir);
             runBuilder.redirectErrorStream(true);
             Process runProcess = runBuilder.start();
 
+            if (hasInput && input != null) {
+                try (BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(runProcess.getOutputStream()))) {
+                    bw.write(input);
+                    bw.newLine();
+                    bw.flush();
+                }
+            }
+
             ExecutorService executor = Executors.newSingleThreadExecutor();
             Future<String> future = executor.submit(() -> {
                 StringBuilder output = new StringBuilder();
-                try (BufferedReader reader = new BufferedReader(new InputStreamReader(runProcess.getInputStream()))) {
+                // 运行过程读取输出
+                try (BufferedReader br = new BufferedReader(
+                        new InputStreamReader(runProcess.getInputStream(), StandardCharsets.UTF_8))) {
                     String line;
-                    while ((line = reader.readLine()) != null) {
+                    while ((line = br.readLine()) != null) output.append(line).append("\n");
-                        output.append(line).append("\n");
-                    }
                 }
                 return output.toString();
             });
 
             String output;
             try {
-                output = future.get(5, TimeUnit.SECONDS);  // 设置 5 秒超时
+                output = future.get(5, TimeUnit.SECONDS);
             } catch (TimeoutException e) {
-                runProcess.destroy();
+                runProcess.destroyForcibly();
                 future.cancel(true);
-                output = "程序运行超时（超过 5 秒）";
+                output = "⏰ 程序运行超时（超过 5 秒）";
             } finally {
                 executor.shutdownNow();
             }
 
             return output;
+
         } catch (Exception ex) {
             ex.printStackTrace();
             return "运行 C 代码时出错：" + ex.getMessage();
         }
     }
-
-
-
     /**
      * 读取文件代码
      * @param filePath 文件路径