diff --git a/AES-front/src/api/user.js b/AES-front/src/api/user.js
index 3ba73cf..ddfeea7 100644
--- a/AES-front/src/api/user.js
+++ b/AES-front/src/api/user.js
@@ -38,7 +38,9 @@ export default {
 
   getSubmitReport:(config) => request.get('/problem/getSubmitReport', config),//获取学生已上传报告信息
 
-  //文件处理部分
+  pickExam: (data) => request.post('/problem/pickExam', data),
+
+    //文件处理部分
   uploadFiles: (data) =>
     request({
       url: '/importClassStudentsFile/uploadFiles',
@@ -52,6 +54,10 @@ export default {
         method: 'get',
       }),     // 文件下载
 
+
+  runPlagiarism:(data) => request.post('/plagiarism/runPlagiarism', data),//运行查重算法
+
+
     //保存文件名到数据库
     saveInfoToProps: (data) => request.post('/problem/saveInfoToProps', data),
 
diff --git a/AES-front/src/views/user/exam-list/components/exam-actions.vue b/AES-front/src/views/user/exam-list/components/exam-actions.vue
index e32c949..ae2b5bd 100644
--- a/AES-front/src/views/user/exam-list/components/exam-actions.vue
+++ b/AES-front/src/views/user/exam-list/components/exam-actions.vue
@@ -7,7 +7,6 @@
 
 <script setup>
 // 鎺у埗鈥滆繘鍏モ�濇寜閽湪鐭椂闂村唴鍙兘琚偣鍑讳竴娆★紝璇ユ寜閽嫢鐭椂闂村唴澶氭鐐瑰嚮浼氬嚭鐜�
-// 鈥淩edis鏈惎鍔ㄢ�濄�佲�滄彁浜ゆ湰棰樹笉鑳借繃蹇�,璇风◢鍚庨噸璇曗�濈瓑閿欒
 const isClicked = ref(false)
 
 const emit = defineEmits(['clickStart', 'clickGrade'])
diff --git a/AES-front/src/views/user/exam-list/index.vue b/AES-front/src/views/user/exam-list/index.vue
index 69080ac..80afdc7 100644
--- a/AES-front/src/views/user/exam-list/index.vue
+++ b/AES-front/src/views/user/exam-list/index.vue
@@ -40,8 +40,18 @@ const paginationReactive = reactive({
 
 const onStartExam = async (exam) => {//鐐瑰嚮杩涘叆鎺т欢鐨勯�昏緫
     try {
+
       const examId = exam.id
       const classId = exam.classId
+      const adminuserId = classId //杩欓噷鍏堟殏鏃剁敤classid鏇挎崲锛屽湪鏂规硶鍐呬慨鏀逛负鑰佸笀id
+      const problemId = examId
+      const submitReport = {
+        problemId,
+        adminuserId
+      };
+      if(exam.submissionStatus==null) {
+        const res = await api.pickExam(submitReport)//棰嗗彇浣滀笟
+      }
         router.push({ name: 'ReportSubmit', params: { examId,classId }, query: { fromclient: false } })
     } catch (err) {
       console.log(err)
@@ -156,17 +166,8 @@ const queryByPage = async (currentPage) => {//杩涘叆椤甸潰鍔犺浇閫昏緫
     paginationReactive.itemCount = total
     examList.value = list
 
-    // 娣诲姞鍊掕鏃舵帶鍒�
-    examList.value.forEach((exam) => {
-      // 璺濈鑰冭瘯涓嶅埌1h,寮�濮嬪�掕鏃�
-      if (exam.status.startsWith('杩樻湁')) {
-        // 鏍煎紡锛�"杩樻湁" + minute + ":" + second
-        const [minute, second] = exam.status.replace('杩樻湁', '').split(':')
-        countdownControllers[exam.id] = useCountdown()
-        countdownControllers[exam.id].startCountdown(Number(minute) * 60 + Number(second))
-      }
-    })
-  } catch (err) {
+
+    } catch (err) {
     console.log(err)
   } finally {
     loading.value = false
diff --git a/AES-front/src/views/user/report-submit/components/report-actions.vue b/AES-front/src/views/user/report-submit/components/report-actions.vue
index 1576c1f..21e3d72 100644
--- a/AES-front/src/views/user/report-submit/components/report-actions.vue
+++ b/AES-front/src/views/user/report-submit/components/report-actions.vue
@@ -38,7 +38,7 @@ const onSave = async () => {  //淇濆瓨
       const submitReport = {
         attachment,
         problemId,
-        adminuserId,
+        adminuserId
       };
       const res = await api.saveInfoToProps(submitReport);
       // 澶勭悊鎴愬姛閫昏緫
@@ -89,12 +89,15 @@ const onSaveAndSubmit = async () => {//淇濆瓨骞舵彁浜�
           adminuserId
         };
         const res = await api.submitInfoToProps(submitReport1);
+        // 鎻愪氦鎴愬姛鍚庯紝璋冪敤鏌ラ噸鍑芥暟
+        await checkPlagiarism();
         emit('clickSaveAndSubmit');
         emit('refreshAttachment');
         ElMessage.success('鎻愪氦鎴愬姛锛�');
+
+
+
       } catch (error) {
-        console.error("Failed to submit:", error);
-        ElMessage.error('鎻愪氦鏃跺彂鐢熼敊璇紒');
       }
     }).catch(() => {
       // 鐢ㄦ埛鍙栨秷鎻愪氦
@@ -125,6 +128,25 @@ const onWithdraw = () => { //鎾ゅ洖鎻愪氦
   });
 
 };
+
+// 鏌ラ噸鍑芥暟
+const checkPlagiarism = async () => {
+  try{
+    // 鑾峰彇鏂囦欢鍚�
+    const attachment = props.attachment;
+    const submitReport = {//鍙渶瑕侀檮浠朵俊鎭�
+      attachment
+    };
+  // 璋冪敤鏌ラ噸鎺ュ彛
+  const response = await api.runPlagiarism(submitReport);
+    const result = response.data;
+    console.log('鏌ラ噸缁撴灉锛�', result);
+    // 澶勭悊鏌ラ噸缁撴灉锛屼緥濡傛樉绀烘渶楂樼浉浼煎害鐨勬枃绔犲悕鍜岀浉浼煎害
+} catch (error) {
+  ElMessage.error('鏌ラ噸杩囩▼涓彂鐢熼敊璇紒');
+}
+};
+
 </script>
 
 <style scoped>
diff --git a/AES/pom.xml b/AES/pom.xml
index 69fada4..4465888 100644
--- a/AES/pom.xml
+++ b/AES/pom.xml
@@ -145,13 +145,6 @@
             <systemPath>${project.basedir}/src/main/WEB-INF/lib/jave-1.0.2.jar</systemPath>
         </dependency>
 
-        <dependency>
-            <groupId>org.apache.poi</groupId>
-            <artifactId>apache-poi</artifactId>
-            <version>2.0.0</version>
-            <scope>system</scope>
-            <systemPath>${project.basedir}/src/main/WEB-INF/lib/poi-3.6-20091214.jar</systemPath>
-        </dependency>
 
         <dependency>
             <groupId>commons-codec</groupId>
@@ -180,6 +173,45 @@
             <version>2.5.29</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.huaban</groupId>
+            <artifactId>jieba-analysis</artifactId>
+            <version>1.0.2</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.hankcs</groupId>
+            <artifactId>hanlp</artifactId>
+            <version>portable-1.7.8</version>
+        </dependency>
+
+
+        <!-- Apache POI 鐢ㄤ簬璇诲彇 .doc 鏂囦欢 鍓嶅悗鐗堟湰淇濇寔涓�鑷达紝涓�4.1.0-->
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi</artifactId>
+            <version>4.1.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+            <version>4.1.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-scratchpad</artifactId>
+            <version>4.1.0</version>
+        </dependency>
+
+        <!-- Apache PDFBox 鐢ㄤ簬璇诲彇 .pdf 鏂囦欢 -->
+        <dependency>
+            <groupId>org.apache.pdfbox</groupId>
+            <artifactId>pdfbox</artifactId>
+            <version>2.0.4</version>
+        </dependency>
+
     </dependencies>
     <dependencyManagement>
         <dependencies>
diff --git a/AES/src/main/java/com/example/aes/problem/controller/PlagiarismController.java b/AES/src/main/java/com/example/aes/problem/controller/PlagiarismController.java
new file mode 100644
index 0000000..b57a9e5
--- /dev/null
+++ b/AES/src/main/java/com/example/aes/problem/controller/PlagiarismController.java
@@ -0,0 +1,64 @@
+package com.example.aes.problem.controller;
+
+import java.io.*;
+import java.nio.file.*;
+import java.text.BreakIterator;
+import java.util.*;
+import java.nio.charset.StandardCharsets;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import java.util.regex.Pattern;
+
+import com.example.aes.global.model.RespBean;
+import com.example.aes.problem.model.PMScoringRubric;
+import com.example.aes.problem.model.PlagiarismResult;
+import com.example.aes.problem.model.SubmitReport;
+import com.example.aes.problem.service.PlagiarismServiceI;
+import com.hankcs.hanlp.HanLP;
+import com.hankcs.hanlp.seg.common.Term;
+import com.hankcs.hanlp.tokenizer.IndexTokenizer;
+
+import org.apache.poi.hwpf.HWPFDocument;
+import org.apache.poi.hwpf.usermodel.Range;
+import org.apache.poi.xwpf.usermodel.XWPFDocument;
+import org.apache.poi.xwpf.usermodel.XWPFParagraph;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.text.PDFTextStripper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+@RestController
+@RequestMapping("/plagiarism")
+@Transactional
+public class PlagiarismController {
+
+    @Autowired
+    private PlagiarismServiceI plagiarismServiceI;
+
+    @PostMapping("/runPlagiarism")
+    public ResponseEntity runPlagiarism(@RequestBody SubmitReport submitReport) {
+        // 鏋勫缓鏂囦欢璺緞
+        String uploadDirectory = System.getProperty("user.dir") + File.separator + "upload";
+        Path filePath = Paths.get(uploadDirectory,submitReport.getAttachment());
+
+        // 妫�鏌ユ枃浠舵槸鍚﹀瓨鍦�
+        if (!Files.exists(filePath)) {
+            return ResponseEntity.badRequest().body("鏂囦欢涓嶅瓨鍦�");
+        }
+        // 璋冪敤Service灞傝繘琛屾煡閲�
+        PlagiarismResult result = plagiarismServiceI.checkPlagiarism(filePath.toString(), uploadDirectory);
+
+        // 杩斿洖鏌ラ噸缁撴灉
+        return ResponseEntity.ok(result);
+    }
+
+
+}
diff --git a/AES/src/main/java/com/example/aes/problem/controller/ProblemController.java b/AES/src/main/java/com/example/aes/problem/controller/ProblemController.java
index fa82625..8503d87 100644
--- a/AES/src/main/java/com/example/aes/problem/controller/ProblemController.java
+++ b/AES/src/main/java/com/example/aes/problem/controller/ProblemController.java
@@ -6,6 +6,7 @@ import com.example.aes.global.model.RespBean;
 import com.example.aes.problem.model.*;
 import com.example.aes.problem.model.DataGrid;
 import com.example.aes.problem.service.ProblemServiceI;
+import com.example.aes.user.model.Classes;
 import com.example.aes.user.model.Classstudents;
 import com.example.aes.user.model.PMUser;
 import com.example.aes.user.service.ClassesServiceI;
@@ -427,8 +428,8 @@ public class ProblemController {
             }
         }
         else {  //鏂扮敓鎴愪竴鏉℃暟鎹�
-            submitReport.setPlagiarismStatus("0");//鏌ラ噸鐘舵�侀粯璁や负0
-            submitReport.setSubmissionStatus("0");//鎻愪氦鐘舵�佸湪淇濆瓨鏃惰缃负0
+            submitReport.setPlagiarismStatus("鏈煡閲�");//鏌ラ噸鐘舵�侀粯璁や负鏈煡閲�
+            submitReport.setSubmissionStatus("鏈彁浜�");//鎻愪氦鐘舵�佸湪淇濆瓨鏃惰缃负鏈彁浜�
             submitReport.setSubmissionTime(now);
             boolean result = problemServiceI.saveSubmitInfoToProps(submitReport);
             if (result) {
@@ -448,11 +449,17 @@ public class ProblemController {
         submitReport.setStudentId(userId);
 
         if (problemServiceI.findReportSubmitted(submitReport)) {
-            boolean result = problemServiceI.updateSubmitInfoForSubmission(submitReport);
-            if (result) {
-                return RespBean.ok("鎻愪氦淇℃伅鏇存柊鎴愬姛");
-            } else {
-                return RespBean.error("鎻愪氦淇℃伅鏇存柊澶辫触");
+            String submissionStatus=problemServiceI.findReportSubmittedStatus(submitReport);
+            if(submissionStatus.equals("宸叉彁浜�")){
+                return RespBean.error("璇峰嬁閲嶅鎻愪氦锛�");
+            }
+            else {
+                boolean result = problemServiceI.updateSubmitInfoForSubmission(submitReport);
+                if (result) {
+                    return RespBean.ok("鎻愪氦淇℃伅鏇存柊鎴愬姛");
+                } else {
+                    return RespBean.error("鎻愪氦淇℃伅鏇存柊澶辫触");
+                }
             }
         }
         else{
@@ -468,10 +475,10 @@ public class ProblemController {
         submitReport.setStudentId(userId);
         if (problemServiceI.findReportSubmitted(submitReport)) {
             String submissionstatus=problemServiceI.findReportSubmittedStatus(submitReport);
-            if(submissionstatus.equals("2")){
+            if(submissionstatus.equals("宸叉挙鍥�")){
                 return RespBean.error("瀹為獙鎶ュ憡宸叉挙鍥烇紒");
             }
-            else if(submissionstatus.equals("0")){
+            else if(submissionstatus.equals("鏈彁浜�")){
                 return RespBean.error("灏氭湭鎻愪氦瀹為獙鎶ュ憡锛�");
             }
             else{
@@ -487,4 +494,30 @@ public class ProblemController {
             return RespBean.error("鏈壘鍒拌瀛︾敓鎻愪氦淇℃伅锛�");
         }
     }
+
+    //瀛︾敓棰嗗彇浣滀笟
+    @PostMapping("/pickExam")
+    public RespBean pickExam(@RequestBody SubmitReport submitReport,HttpServletRequest request) {
+//        if (problemServiceI.findReportSubmitted(submitReport)) {//濡傛灉鏁版嵁搴撲腑宸叉湁鏁版嵁锛岃鏄庡凡缁忛鍙�
+
+            DecodeToken decodeToken = new DecodeToken(request);
+        String UserId = decodeToken.getUserId();
+        int userId = Integer.parseInt(UserId);
+        Classes classes=classesServiceI.findClassById(submitReport.getAdminuserId());//杩欓噷瀛樻斁鐨勮繕鏄痗lassid
+        int AdminuserId=classes.getTeacherId();
+        LocalDateTime now = LocalDateTime.now();
+        submitReport.setStudentId(userId);
+        submitReport.setAdminuserId(AdminuserId);
+        submitReport.setSubmissionStatus("宸查鍙�");
+        submitReport.setReadTime(now);
+
+
+
+        boolean result = problemServiceI.saveSubmitInfoToProps(submitReport);//鐩存帴璋冪敤淇濆瓨閫昏緫
+        if (result) {
+            return RespBean.ok("棰嗗彇鎴愬姛");
+        } else {
+            return RespBean.error("棰嗗彇澶辫触");
+        }
+    }
 }
\ No newline at end of file
diff --git a/AES/src/main/java/com/example/aes/problem/dao/impl/SubmitReportDaoImpl.java b/AES/src/main/java/com/example/aes/problem/dao/impl/SubmitReportDaoImpl.java
index 1711d10..aca7fa3 100644
--- a/AES/src/main/java/com/example/aes/problem/dao/impl/SubmitReportDaoImpl.java
+++ b/AES/src/main/java/com/example/aes/problem/dao/impl/SubmitReportDaoImpl.java
@@ -317,7 +317,7 @@ public class SubmitReportDaoImpl extends BaseDaoImpl<SubmitReport> implements Su
         Session session = this.getCurrentSession();
         try {
 
-            String hql = "UPDATE SubmitReport SET submissionStatus = '1' " +
+            String hql = "UPDATE SubmitReport SET submissionStatus = '宸叉彁浜�' " +
                     "WHERE problemId = :problemId " +
                     "AND adminuserId = :adminuserId " +
                     "AND studentId = :studentId";
@@ -340,7 +340,7 @@ public class SubmitReportDaoImpl extends BaseDaoImpl<SubmitReport> implements Su
         Session session = this.getCurrentSession();
         try {
 
-            String hql = "UPDATE SubmitReport SET submissionStatus = '2' " +
+            String hql = "UPDATE SubmitReport SET submissionStatus = '宸叉挙鍥�' " +
                     "WHERE problemId = :problemId " +
                     "AND adminuserId = :adminuserId " +
                     "AND studentId = :studentId";
diff --git a/AES/src/main/java/com/example/aes/problem/model/PMProblem.java b/AES/src/main/java/com/example/aes/problem/model/PMProblem.java
index d54badc..7f08411 100644
--- a/AES/src/main/java/com/example/aes/problem/model/PMProblem.java
+++ b/AES/src/main/java/com/example/aes/problem/model/PMProblem.java
@@ -29,7 +29,6 @@ public class PMProblem extends Problem implements java.io.Serializable{//缁ф壙P
     private String submissionStatus;//鎻愪氦鐘舵�侊紝鏉ヨ嚜submitproblem
     private LocalDateTime startTime;//寮�濮嬫椂闂达紝鏉ヨ嚜postproblem
     private LocalDateTime endTime;//缁撴潫鏃堕棿
-    private String submissonStatus;//鎻愪氦鐘舵�侊紝鏉ヨ嚜submitproblem
     private String plagiarismStatus;//鏌ラ噸鐘舵��
     private float score;//鏈�缁堝垎鏁�
     private String status;//鏈�鍚庡湪椤甸潰鏄剧ず鐨勭姸鎬侊紝鍙栧喅浜庝笂闈笁涓弬鏁般��
diff --git a/AES/src/main/java/com/example/aes/problem/model/PlagiarismResult.java b/AES/src/main/java/com/example/aes/problem/model/PlagiarismResult.java
new file mode 100644
index 0000000..64b3aa4
--- /dev/null
+++ b/AES/src/main/java/com/example/aes/problem/model/PlagiarismResult.java
@@ -0,0 +1,15 @@
+package com.example.aes.problem.model;
+
+import lombok.Data;
+
+@Data
+public class PlagiarismResult {//鐢ㄤ簬瀛樻斁鏌ラ噸绠楁硶鐨勭粨鏋滐紙鏈�澶у�硷級
+
+    private String articleName;
+    private double similarity;
+
+    public PlagiarismResult(String articleName, double similarity) {
+        this.articleName = articleName;
+        this.similarity = similarity;
+    }
+}
diff --git a/AES/src/main/java/com/example/aes/problem/service/Impl/PlagiarismServiceImpl.java b/AES/src/main/java/com/example/aes/problem/service/Impl/PlagiarismServiceImpl.java
new file mode 100644
index 0000000..576a7f3
--- /dev/null
+++ b/AES/src/main/java/com/example/aes/problem/service/Impl/PlagiarismServiceImpl.java
@@ -0,0 +1,372 @@
+package com.example.aes.problem.service.Impl;
+
+import com.example.aes.problem.dao.ProblemDaoI;
+import com.example.aes.problem.model.PlagiarismResult;
+import com.example.aes.problem.service.PlagiarismServiceI;
+import com.hankcs.hanlp.HanLP;
+import com.hankcs.hanlp.seg.common.Term;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.text.PDFTextStripper;
+import org.apache.poi.hwpf.HWPFDocument;
+import org.apache.poi.hwpf.usermodel.Range;
+import org.apache.poi.xwpf.usermodel.XWPFDocument;
+import org.apache.poi.xwpf.usermodel.XWPFParagraph;
+import org.springframework.stereotype.Service;
+
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.*;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+@Service
+public class PlagiarismServiceImpl implements PlagiarismServiceI {
+
+
+    @Override
+    public PlagiarismResult checkPlagiarism(String fileName, String uploadDirectory) {
+
+        // 娓呯悊鏂囦欢鍚�
+        String cleanedFileName = cleanFileName(fileName);
+
+        // 鏋勫缓鏂囦欢璺緞
+        Path filePath = Paths.get(fileName);
+
+        // 璇诲彇涓婁紶鐨勬枃浠跺唴瀹�
+        String article1 = readFile(filePath.toString());
+
+        // 璇诲彇upload鐩綍涓嬬殑鎵�鏈夋枃浠�
+        List<Path> filePaths = listFilesInDirectory(uploadDirectory);
+
+        double highestSimilarity = 0.0;
+        String similarFileName = "";
+
+        // 閬嶅巻姣忎釜鏂囦欢
+        for (Path path : filePaths) {
+            if (!path.equals(filePath)) {//闄や簡鍘熸湰鐨勬枃浠�
+                String article2 = readFile(path.toString());
+
+                // 鍒嗗埆瀵逛袱绡囨枃绔犺繘琛屾柇鍙�
+                List<String> sentences1 = splitIntoSentences(article1);
+                List<String> sentences2 = splitIntoSentences(article2);
+
+                double totalSimilarityChars = 0.0; // 鐤戜技鎶勮鐨勫彞瀛愬瓧绗︽�绘暟
+                int totalChars = 0; // 琚祴鏂囨湰涓殑鎬诲瓧绗︽暟
+
+//            // 浣跨敤浣欏鸡鐩镐技搴︽柟娉曞姣忓鍙ュ瓙杩涜鏌ラ噸姣斿
+//            for (String sentence1 : sentences1) {
+//                double maxSimilarity = 0.0;
+//                String mostSimilarSentence = "";
+//                for (String sentence2 : sentences2) {
+//                    double similarity = calculateSentenceSimilarity1(sentence1, sentence2); // 浣跨敤浣欏鸡鐩镐技搴﹁绠楁柟娉�
+//                    if (similarity > maxSimilarity) {
+//                        maxSimilarity = similarity;
+//                        mostSimilarSentence = sentence2;
+//                    }
+//                }
+//                // 閲嶅鐜囬珮鐨勫彞瀛�
+//                if (maxSimilarity > 0.5) { // 鍋囪闃堝�间负0.5
+//                    totalSimilarityChars += sentence1.length(); // 绱姞鐤戜技鎶勮鍙ュ瓙鐨勫瓧绗︽暟
+//                }
+//                totalChars += sentence1.length(); // 绱姞鏂囨湰1涓殑瀛楃鏁�
+//            }
+//
+//            // 杈撳嚭鏂囨湰鐨勭浉浼煎害
+//            // 纭繚totalChars涓嶄负0锛岄伩鍏嶉櫎浠�0鐨勬儏鍐�
+//            if (totalChars > 0) {
+//                System.out.printf("鏂囩珷缂栫爜锛�%d锛岀枒浼兼妱琚彞鎬荤浉浼煎害锛堢枒浼兼妱琚彞鍦ㄨ妫�娴嬫枃鏈崰姣旓級锛�%.2f%%%n", i + 1, (totalSimilarityChars / totalChars) * 100);
+//            } else {
+//                System.out.println("鏂囩珷缂栫爜锛�" + (i + 1) + " 琚娴嬫枃鏈负绌恒��");
+//            }
+//
+
+                // 浣跨敤 Jaccard 鐩镐技搴﹁绠楁柟娉曞姣忓鍙ュ瓙杩涜鏌ラ噸姣斿
+                for (String sentence1 : sentences1) {
+                    double maxSimilarity = 0.0;
+                    String mostSimilarSentence = "";
+                    for (String sentence2 : sentences2) {
+                        double similarity = calculateSentenceSimilarity2(sentence1, sentence2);//浣跨敤Jaccards鐩镐技搴﹁绠楁柟娉�
+                        if (similarity > maxSimilarity) {
+                            maxSimilarity = similarity;
+                            mostSimilarSentence = sentence2;
+                        }
+                    }
+                    // 杈撳嚭閲嶅鐜囬珮鐨勫彞瀛�
+                    if (maxSimilarity > 0.5) { // 鍋囪闃堝�间负0.5
+//                        System.out.println("琚娴嬫枃娈典腑鐤戜技鎶勮鍙ワ細");
+//                        System.out.println(sentence1);
+//                        System.out.println("鍘熸枃鐩镐技鍙ワ細");
+//                        System.out.println(mostSimilarSentence);
+//                        System.out.println("璇ュ彞璇嶈jaccards鐩镐技搴︼細" + maxSimilarity);
+                        totalSimilarityChars += sentence1.length(); // 绱姞鐤戜技鎶勮鍙ュ瓙鐨勫瓧绗︽暟
+                    }
+                    totalChars += sentence1.length(); // 绱姞鏂囨湰1涓殑瀛楃鏁�
+                }
+
+                // 璁＄畻鏁翠綋鐩镐技搴�
+                double similarity = totalSimilarityChars / totalChars;
+                if (similarity > highestSimilarity) {
+                    highestSimilarity = similarity;
+                    similarFileName = path.getFileName().toString();
+                }
+
+            }
+        }
+        return new PlagiarismResult(similarFileName,highestSimilarity );
+    }
+
+    /**********************************///璇诲彇鏂囦欢閮ㄥ垎
+    // 鍒楀嚭鎸囧畾鏂囦欢澶逛腑鐨勬墍鏈夋枃浠�
+    public List<Path> listFilesInDirectory(String directoryPath) {
+        try (Stream<Path> paths = Files.walk(Paths.get(directoryPath))) {
+            return paths.filter(Files::isRegularFile).collect(Collectors.toList());
+        } catch (IOException e) {
+            e.printStackTrace();
+            return Collections.emptyList();
+        }
+    }
+    // 璇诲彇鏂囦欢鍐呭锛屾敮鎸� .txt, .doc, .pdf 鏂囦欢,骞朵綔绌虹櫧瀛楃娓呯悊
+    public String readFile(String filePath) {
+        String fileExtension = getFileExtension(filePath).toLowerCase();
+        String content = "";
+
+        if (fileExtension.equals("txt")) {
+            content = cleanText(readTextFile(filePath));
+        } else if (fileExtension.equals("doc")||fileExtension.equals("docx")) {
+            content = cleanText(readDocFile(filePath));
+        } else if (fileExtension.equals("pdf")) {
+            content = cleanText(readPdfFile(filePath));
+        }
+
+        return content;
+    }
+    //璇诲彇.txt鏂囦欢
+    public String readTextFile(String filePath) {
+        StringBuilder contentBuilder = new StringBuilder();
+        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
+            String currentLine;
+            while ((currentLine = br.readLine()) != null) {
+                contentBuilder.append(currentLine).append(System.lineSeparator());
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+            return "";
+        }
+        return contentBuilder.toString();
+    }
+    // 璇诲彇.doc鏂囦欢骞惰繑鍥炴枃鏈唴瀹�
+    public String readDocFile(String docFilePath) {
+        try (FileInputStream fis = new FileInputStream(docFilePath)) {
+            String fileExtension = Files.probeContentType(Paths.get(docFilePath));
+            if (fileExtension.equals("application/vnd.openxmlformats-officedocument.wordprocessingml.document")) {
+                // 澶勭悊 .docx 鏂囦欢
+                XWPFDocument docx = new XWPFDocument(fis);
+                List<XWPFParagraph> paragraphs = docx.getParagraphs();
+                StringBuilder textBuilder = new StringBuilder();
+                for (XWPFParagraph paragraph : paragraphs) {
+                    textBuilder.append(paragraph.getText());
+                    textBuilder.append("\n");
+                }
+                return textBuilder.toString();
+            } else if (fileExtension.equals("application/msword")) {
+                // 澶勭悊 .doc 鏂囦欢
+                HWPFDocument doc = new HWPFDocument(fis);
+                Range range = doc.getRange();
+                return range.text();
+            } else {
+                throw new IllegalArgumentException("Unsupported file type: " + fileExtension);
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+            return "";
+        }
+    }
+
+    // 璇诲彇.pdf鏂囦欢骞惰繑鍥炴枃鏈唴瀹�
+    public String readPdfFile(String pdfFilePath) {
+        try (PDDocument document = PDDocument.load(new File(pdfFilePath));
+             StringWriter writer = new StringWriter()) {
+            PDFTextStripper stripper = new PDFTextStripper();
+            stripper.writeText(document, writer);
+            return writer.toString();
+        } catch (IOException e) {
+            e.printStackTrace();
+            return "";
+        }
+    }
+
+    // 鑾峰彇鏂囦欢鎵╁睍鍚�
+    public String getFileExtension(String fileName) {
+        int lastDotIndex = fileName.lastIndexOf('.');
+        if (lastDotIndex > 0) {
+            return fileName.substring(lastDotIndex + 1);
+        }
+        return "";
+    }
+    //鏂囦欢鏍煎紡娓呯悊
+    public static String cleanFileName(String fileName) {
+        return fileName.replaceAll("[<>:\"/\\\\|?*]", "_");
+    }
+    /**********************************///鏁版嵁娓呮礂閮ㄥ垎
+
+    // 娣诲姞涓�涓潤鎬佺殑鍋滅敤璇嶉泦鍚�
+    private static final Set<String> STOP_WORDS = new HashSet<>();//杩囨护鍋滅敤璇�
+    static {
+        try {
+            String stopwordsFilePath = "C:/Users/86186/Desktop/鍋滅敤璇�.txt";
+            // 璇诲彇鏂囦欢涓殑姣忎竴琛�
+            Files.readAllLines(Paths.get(stopwordsFilePath), StandardCharsets.UTF_8)
+                    .forEach(STOP_WORDS::add);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+    // 浣跨敤姝ｅ垯琛ㄨ揪寮忕Щ闄ゆ墍鏈夌┖鐧藉瓧绗�
+    private static String cleanText(String text) {//鐢ㄤ簬鍒嗗彞鏃跺幓闄ょ┖鐧�
+        return text.replaceAll("\\s+", "");
+    }
+    // 绉婚櫎鍙ュ瓙涓殑鏍囩偣
+    private static String cleanSentences(String text) {//鐢ㄤ簬鍙ヤ腑鏂囨湰鏍囩偣娓呮礂
+        return text.replaceAll("[锛屻�傦紒锛燂紱锛氣�溾�濃�樷�欙紙锛夈�娿�嬨�愩�戙�斻�曗�︹�旓綖銆乗\\\s+]+", "");
+    }
+
+    /**********************************///鏂囨湰澶勭悊
+    public List<String> splitIntoSentences(String text) {//鏂彞
+        // 浣跨敤 HanLP 杩涜鍒嗚瘝锛岃幏鍙栬瘝鍏冨垪琛�
+        List<Term> termList = HanLP.segment(text);
+        // 瀛樺偍鏂ソ鐨勫彞瀛�
+        List<String> sentences = new ArrayList<>();
+        // 浣跨敤 StringBuilder 鏉ユ瀯寤哄彞瀛�
+        StringBuilder sentenceBuilder = new StringBuilder();
+
+        // 閬嶅巻璇嶅厓鍒楄〃锛屾牴鎹爣鐐圭鍙疯繘琛屾柇鍙�
+        for (Term term : termList) {
+            String word = term.word;
+            // 濡傛灉褰撳墠璇嶆槸鏍囩偣绗﹀彿锛屽苟涓斾笉鏄彞瀛愬唴閮ㄧ殑鏍囩偣锛堝椤垮彿銆侀�楀彿绛夛級锛屽垯鏂彞
+            if (Pattern.matches("[銆傦紒锛燂紱锛歖$", word)) {
+                sentenceBuilder.append(word);
+                sentences.add(sentenceBuilder.toString());
+                sentenceBuilder.setLength(0); // 娓呯┖ StringBuilder 浠ヤ究鏋勫缓涓嬩竴涓彞瀛�
+            } else {
+                sentenceBuilder.append(word);
+            }
+        }
+
+        // 妫�鏌� StringBuilder 涓槸鍚﹁繕鏈夊墿浣欑殑鏂囨湰锛屽鏋滄湁锛屽垯娣诲姞鍒版渶鍚庝竴涓彞瀛�
+        if (sentenceBuilder.length() > 0) {
+            sentences.add(sentenceBuilder.toString());
+        }
+
+        return sentences;
+    }
+
+    /**********************************///璁＄畻鐩镐技搴﹂儴鍒�
+    // 璁＄畻涓や釜鍙ュ瓙涔嬮棿鐨勪綑寮︾浉浼煎害
+    public double calculateSentenceSimilarity1(String sentence1, String sentence2) {
+        // 鍒嗚瘝骞跺垱寤鸿瘝棰戝悜閲�
+        Map<String, Integer> vector1 = buildWordFrequencyVector(sentence1);
+        Map<String, Integer> vector2 = buildWordFrequencyVector(sentence2);
+
+//        // 杈撳嚭涓や釜鍙ュ瓙鐨勮瘝棰戝悜閲�
+//        System.out.println("Sentence 1 Vector: " + vector1);
+//        System.out.println("Sentence 2 Vector: " + vector2);
+
+        // 璁＄畻浣欏鸡鐩镐技搴�
+        double similarity = calculateCosineSimilarity(vector1, vector2);
+//        //杈撳嚭
+//        System.out.println("Cosine Similarity: " + similarity);
+
+        return similarity;
+    }
+    // 璁＄畻涓や釜鍙ュ瓙涔嬮棿鐨� Jaccard 鐩镐技搴�
+    public double calculateSentenceSimilarity2(String sentence1, String sentence2) {
+        // 鍒嗚瘝骞跺垱寤鸿瘝闆嗗悎
+        Set<String> setA = buildWordSet(sentence1);
+        Set<String> setB = buildWordSet(sentence2);
+
+        // 璁＄畻 Jaccard 鐩镐技搴�
+        return calculateJaccardSimilarity(setA, setB);
+    }
+
+    // 鏋勫缓璇嶉鍚戦噺 鐢ㄤ簬浣欏鸡鐩镐技搴﹁绠�
+    public Map<String, Integer> buildWordFrequencyVector(String sentence) {
+        Map<String, Integer> wordFrequency = new HashMap<>();
+        String cleanedSentence = cleanSentences(sentence);
+        // 鍒嗚瘝
+        List<Term> termList = HanLP.segment(cleanedSentence);
+        for (Term term : termList) {
+            String word = term.word;
+            // 杩囨护鍋滅敤璇�
+            if (!STOP_WORDS.contains(word)) {
+                wordFrequency.put(word, wordFrequency.getOrDefault(word, 0) + 1);
+            }
+        }
+//        for (Term term : termList) {
+//            String word = term.word;
+//            wordFrequency.put(word, wordFrequency.getOrDefault(word, 0) + 1);
+//        }
+        return wordFrequency;
+    }
+
+    // 鏋勫缓璇嶉泦鍚� 鐢ㄤ簬Jaccard鐩镐技搴﹁绠�
+    public Set<String> buildWordSet(String sentence) {
+        Set<String> wordSet = new HashSet<>();
+        String cleanedSentence = cleanSentences(sentence);
+        // 鍒嗚瘝
+        List<Term> termList = HanLP.segment(cleanedSentence);
+        for (Term term : termList) {
+            String word = term.word;
+            // 杩囨护鍋滅敤璇�
+            if (!STOP_WORDS.contains(word)) {
+                wordSet.add(word);
+            }
+        }
+        return wordSet;
+    }
+
+    // 璁＄畻浣欏鸡鐩镐技搴�
+    public double calculateCosineSimilarity(Map<String, Integer> vectorA, Map<String, Integer> vectorB) {
+        Set<String> uniqueWords = new HashSet<>(vectorA.keySet());
+        uniqueWords.addAll(vectorB.keySet());
+
+        double dotProduct = 0.0;
+        double normA = 0.0;
+        double normB = 0.0;
+
+        for (String word : uniqueWords) {
+            int countA = vectorA.getOrDefault(word, 0);
+            int countB = vectorB.getOrDefault(word, 0);
+            dotProduct += countA * countB;
+            normA += Math.pow(countA, 2);
+            normB += Math.pow(countB, 2);
+        }
+
+        if (normA == 0.0 || normB == 0.0) {
+            return 0.0; // 濡傛灉浠讳竴鍚戦噺涓洪浂鍚戦噺锛屽垯鐩镐技搴︿负0
+        }
+
+        return dotProduct / (Math.sqrt(normA) * Math.sqrt(normB));
+    }
+
+    // 璁＄畻涓や釜闆嗗悎涔嬮棿鐨� Jaccard 鐩镐技搴�
+    public double calculateJaccardSimilarity(Set<String> setA, Set<String> setB) {
+        Set<String> intersection = new HashSet<>(setA);
+        intersection.retainAll(setB);
+        Set<String> union = new HashSet<>(setA);
+        union.addAll(setB);
+
+        // 閬垮厤闄や互闆剁殑鎯呭喌
+        if (union.size() == 0) {
+            return 0.0;
+        }
+
+        return (double) intersection.size() / union.size();
+    }
+
+
+
+}
diff --git a/AES/src/main/java/com/example/aes/problem/service/Impl/ProblemServiceImpl.java b/AES/src/main/java/com/example/aes/problem/service/Impl/ProblemServiceImpl.java
index 0251658..56370b3 100644
--- a/AES/src/main/java/com/example/aes/problem/service/Impl/ProblemServiceImpl.java
+++ b/AES/src/main/java/com/example/aes/problem/service/Impl/ProblemServiceImpl.java
@@ -149,7 +149,10 @@ public class ProblemServiceImpl implements ProblemServiceI {
         for (PMProblem pmProblem : pMproblems) {
             // 浠嶮ap涓幏鍙栧搴旂殑ReportSubmitted瀵硅薄
             ReportSubmitted reportStatus = reportStatusMap.get(pmProblem.getId());
-
+            //濡傛灉瀛︾敓灏氭湭鎻愪氦杩囦换浣曟姤鍛�
+            if(reportStatus == null){
+                pmProblem.setStatus("鏈彁浜�");
+            }
             // 纭繚reportStatus涓嶄负null骞朵笖studentId鍖归厤
             if (reportStatus != null && studentId.equals(reportStatus.getStudentId())) {
                 pmProblem.setSubmissionStatus(reportStatus.getSubmissionStatus());
@@ -158,14 +161,12 @@ public class ProblemServiceImpl implements ProblemServiceI {
                     pmProblem.setScore(reportStatus.getScore());
                 }
 
-                // 鏍规嵁submissionStatus璁剧疆status
-                if ("0".equals(reportStatus.getSubmissionStatus())) {
+                String submissionStatus = reportStatus.getSubmissionStatus();
+                if ("鏈鍙�".equals(submissionStatus) || "宸查鍙�".equals(submissionStatus)||submissionStatus==null) {
                     pmProblem.setStatus("鏈彁浜�");
-                }
-                else if ("1".equals(reportStatus.getSubmissionStatus())) {
+                } else if ("宸叉彁浜�".equals(submissionStatus)) {
                     pmProblem.setStatus("宸叉彁浜�");
-                }
-                else if("2".equals(reportStatus.getSubmissionStatus())){
+                } else if ("宸叉挙鍥�".equals(submissionStatus)) {
                     pmProblem.setStatus("宸叉挙鍥�");
                 }
 
diff --git a/AES/src/main/java/com/example/aes/problem/service/PlagiarismServiceI.java b/AES/src/main/java/com/example/aes/problem/service/PlagiarismServiceI.java
new file mode 100644
index 0000000..bcd18ee
--- /dev/null
+++ b/AES/src/main/java/com/example/aes/problem/service/PlagiarismServiceI.java
@@ -0,0 +1,14 @@
+package com.example.aes.problem.service;
+
+
+import com.example.aes.problem.model.*;
+
+import java.nio.file.Path;
+import java.time.LocalDateTime;
+import java.util.List;
+
+public interface PlagiarismServiceI {
+
+	public PlagiarismResult checkPlagiarism(String toString, String uploadDirectory);
+
+}
diff --git a/AES/src/main/java/com/example/aes/user/controller/DownLoadFileController.java b/AES/src/main/java/com/example/aes/user/controller/DownLoadFileController.java
index fd41bec..4371e8f 100644
--- a/AES/src/main/java/com/example/aes/user/controller/DownLoadFileController.java
+++ b/AES/src/main/java/com/example/aes/user/controller/DownLoadFileController.java
@@ -10,10 +10,7 @@ import org.springframework.core.io.ResourceLoader;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 import javax.servlet.ServletOutputStream;
 import javax.servlet.http.HttpServletResponse;