new function: output csv file

Signed-off-by: Chenx221 <chenx221@yandex.com>

project2/.idea/artifacts/project2_war_exploded.xml

@@ -46,6 +46,8 @@
           <element id="library" level="project" name="Maven: org.springframework:spring-web:5.3.27" />
           <element id="library" level="project" name="Maven: org.springframework:spring-webmvc:5.3.27" />
           <element id="library" level="project" name="Maven: taglibs:standard:1.1.2" />
+          <element id="library" level="project" name="Maven: org.apache.commons:commons-csv:1.10.0" />
+          <element id="library" level="project" name="Maven: commons-io:commons-io:2.12.0" />
         </element>
       </element>
     </root>

project2/out/artifacts/project2_war_exploded/WEB-INF/classes/spring-security.xml

@@ -23,6 +23,8 @@
         <security:intercept-url pattern="/dashboard" access="hasRole('admin')"/>
         <security:intercept-url pattern="/student/**" access="hasRole('admin')"/>
         <security:intercept-url pattern="/course/**" access="hasRole('admin')"/>
+        <security:intercept-url pattern="/score/**" access="hasRole('admin')"/>
+        <security:intercept-url pattern="/output/**" access="hasRole('admin')"/>
         <!--        未登录状态下会自动跳转到/login登录页-->
         <security:form-login login-page="/login"
                              default-target-url="/dashboard"

project2/out/artifacts/project2_war_exploded/WEB-INF/views/courseList.jsp

@@ -130,7 +130,19 @@
          style="background-image: url('${pageContext.request.contextPath}/resources/img/jason-blackeye-nyL-rzwP-Mk-unsplash.jpg'); margin-top: -58.59px;">
         <div class="mask d-flex align-items-center h-100" style="background-color: hsla(0, 0%, 100%, 0.5);">
             <div class="container d-flex justify-content-center">
-                <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回</button>
+                <div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回
+                            </button>
+                        </div>
+                    </div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="exportCSV()">导出</button>
+                        </div>
+                    </div>
+                </div>
                 <div class="table-container rounded-4 shadow-3-strong"
                      style="background-color: rgba(255,255,255,0.9); overflow-y: auto; max-height: 400px;">
                     <table class="table table-striped table-hover border-primary">
@@ -166,7 +178,18 @@
 
 
 <script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
-
+<script>
+    function exportCSV() {
+        // 构造请求 URL，根据需要导出的类型传递参数
+        var exportUrl = '/output/export-csv?type=course';  // 示例：导出学生数据
+        var link = document.createElement('a');
+        link.href = exportUrl;
+        link.style.display = 'none';
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+    }
+</script>
 
 </body>
 

project2/out/artifacts/project2_war_exploded/WEB-INF/views/scoreList.jsp

@@ -130,7 +130,20 @@
          style="background-image: url('${pageContext.request.contextPath}/resources/img/jason-blackeye-nyL-rzwP-Mk-unsplash.jpg'); margin-top: -58.59px;">
         <div class="mask d-flex align-items-center h-100" style="background-color: hsla(0, 0%, 100%, 0.5);">
             <div class="container d-flex justify-content-center">
-                <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回</button>
+                <div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回
+                            </button>
+                        </div>
+                    </div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="exportCSV()">导出</button>
+                        </div>
+                    </div>
+                </div>
+
                 <div class="table-container rounded-4 shadow-3-strong"
                      style="background-color: rgba(255,255,255,0.9); overflow-y: auto; max-height: 400px;">
                     <table class="table table-striped table-hover border-primary">
@@ -138,6 +151,8 @@
                         <tr>
                             <th scope="col">成绩ID</th>
                             <th scope="col">学号</th>
+                            <th scope="col">学生姓名</th>
+                            <th scope="col">课程ID</th>
                             <th scope="col">课程名</th>
                             <th scope="col">成绩</th>
                         </tr>
@@ -147,6 +162,8 @@
                             <tr>
                                 <td>${score.scoreID}</td>
                                 <td>${score.student.id}</td>
+                                <td>${score.student.name}</td>
+                                <td>${score.course.courseID}</td>
                                 <td>${score.course.courseName}</td>
                                 <td>${score.score}</td>
                             </tr>
@@ -168,7 +185,18 @@
 
 
 <script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
-
+<script>
+    function exportCSV() {
+        // 构造请求 URL，根据需要导出的类型传递参数
+        var exportUrl = '/output/export-csv?type=score';  // 示例：导出学生数据
+        var link = document.createElement('a');
+        link.href = exportUrl;
+        link.style.display = 'none';
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+    }
+</script>
 
 </body>
 

project2/out/artifacts/project2_war_exploded/WEB-INF/views/studentList.jsp

@@ -130,7 +130,19 @@
          style="background-image: url('${pageContext.request.contextPath}/resources/img/jason-blackeye-nyL-rzwP-Mk-unsplash.jpg'); margin-top: -58.59px;">
         <div class="mask d-flex align-items-center h-100" style="background-color: hsla(0, 0%, 100%, 0.5);">
             <div class="container d-flex justify-content-center">
-                <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回</button>
+                <div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回
+                            </button>
+                        </div>
+                    </div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="exportCSV()">导出</button>
+                        </div>
+                    </div>
+                </div>
                 <div class="table-container rounded-4 shadow-3-strong"
                      style="background-color: rgba(255,255,255,0.9); overflow-y: auto; max-height: 400px;">
                     <table class="table table-striped table-hover border-primary">
@@ -172,7 +184,18 @@
 
 
 <script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
-
+<script>
+    function exportCSV() {
+        // 构造请求 URL，根据需要导出的类型传递参数
+        var exportUrl = '/output/export-csv?type=student';  // 示例：导出学生数据
+        var link = document.createElement('a');
+        link.href = exportUrl;
+        link.style.display = 'none';
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+    }
+</script>
 
 </body>
 

project2/pom.xml

@@ -156,5 +156,15 @@
             <artifactId>log4j-core</artifactId>
             <version>2.12.4</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-csv</artifactId>
+            <version>1.10.0</version>
+        </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>2.12.0</version>
+        </dependency>
     </dependencies>
 </project>

project2/src/main/java/cyou/chenx221/controller/OutputController.java

@@ -0,0 +1,127 @@
+package cyou.chenx221.controller;
+
+import cyou.chenx221.pojo.Course;
+import cyou.chenx221.pojo.Score;
+import cyou.chenx221.pojo.Student;
+import cyou.chenx221.service.CourseService;
+import cyou.chenx221.service.ScoreService;
+import cyou.chenx221.service.StudentService;
+import org.apache.commons.csv.CSVFormat;
+import org.apache.commons.csv.CSVPrinter;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+@RestController
+@RequestMapping("/output")
+public class OutputController {
+
+    @Autowired
+    private StudentService studentService;
+
+    @Autowired
+    private CourseService courseService;
+
+    @Autowired
+    private ScoreService scoreService;
+
+    @GetMapping("/export-csv")
+    public void exportCSV(HttpServletResponse response, @RequestParam("type") String type) throws IOException {
+        response.setHeader("Content-Disposition", "attachment; filename=export.csv");
+        response.setContentType("text/csv; charset=UTF-8"); // 设置字符编码为UTF-8
+        response.setCharacterEncoding("UTF-8"); // 设置响应字符编码为UTF-8
+
+        List<String> headers;
+        List<List<String>> data;
+
+        switch (type) {
+            case "student" -> {
+                headers = Arrays.asList("学生ID", "学生姓名", "性别", "出生日期", "联系方式", "班级");
+                List<Student> students = studentService.getAllStudents(); // 根据实际情况获取学生数据
+                data = transformStudentsToData(students);
+            }
+            case "course" -> {
+                headers = Arrays.asList("课程ID", "课程名", "课程描述");
+                List<Course> courses = courseService.getAllCourses(); // 根据实际情况获取课程数据
+                data = transformCoursesToData(courses);
+            }
+            case "score" -> {
+                headers = Arrays.asList("成绩ID", "学生ID", "学生姓名", "课程ID", "课程名称", "成绩");
+                List<Score> scores = scoreService.getAllScores(); // 根据实际情况获取成绩数据
+                data = transformScoresToData(scores);
+            }
+            default -> throw new IllegalArgumentException("Invalid export type: " + type);
+        }
+
+        // 使用 Apache Commons CSV 构建 CSV 输出
+        try (OutputStream outputStream = response.getOutputStream();
+             OutputStreamWriter outputStreamWriter = new OutputStreamWriter(outputStream, StandardCharsets.UTF_8);
+             CSVPrinter csvPrinter = new CSVPrinter(outputStreamWriter, CSVFormat.DEFAULT)) {
+            csvPrinter.printRecord(headers);
+            for (List<String> row : data) {
+                csvPrinter.printRecord(row);
+            }
+            csvPrinter.flush();
+        }
+    }
+
+    // 辅助方法：将学生对象列表转换为数据列表
+    private List<List<String>> transformStudentsToData(List<Student> students) {
+        List<List<String>> data = new ArrayList<>();
+        for (Student student : students) {
+            List<String> rowData = Arrays.asList(
+                    String.valueOf(student.getId()),
+                    student.getName(),
+                    student.getSex(),
+                    student.getBirthday().toString(),
+                    String.valueOf(student.getPhone()),
+                    String.valueOf(student.getClasses())
+            );
+            data.add(rowData);
+        }
+        return data;
+    }
+
+    // 辅助方法：将课程对象列表转换为数据列表
+    private List<List<String>> transformCoursesToData(List<Course> courses) {
+        List<List<String>> data = new ArrayList<>();
+        for (Course course : courses) {
+            List<String> rowData = Arrays.asList(
+                    String.valueOf(course.getCourseID()),
+                    course.getCourseName(),
+                    course.getDescription()
+            );
+            data.add(rowData);
+        }
+        return data;
+    }
+
+    // 辅助方法：将成绩对象列表转换为数据列表
+    private List<List<String>> transformScoresToData(List<Score> scores) {
+        List<List<String>> data = new ArrayList<>();
+        for (Score score : scores) {
+            List<String> rowData = Arrays.asList(
+                    String.valueOf(score.getScoreID()),
+                    String.valueOf(score.getStudent().getId()),
+                    score.getStudent().getName(),
+                    String.valueOf(score.getCourse().getCourseID()),
+                    score.getCourse().getCourseName(),
+                    String.valueOf(score.getScore())
+            );
+            data.add(rowData);
+        }
+        return data;
+    }
+}

project2/src/main/resources/spring-security.xml

@@ -23,6 +23,8 @@
         <security:intercept-url pattern="/dashboard" access="hasRole('admin')"/>
         <security:intercept-url pattern="/student/**" access="hasRole('admin')"/>
         <security:intercept-url pattern="/course/**" access="hasRole('admin')"/>
+        <security:intercept-url pattern="/score/**" access="hasRole('admin')"/>
+        <security:intercept-url pattern="/output/**" access="hasRole('admin')"/>
         <!--        未登录状态下会自动跳转到/login登录页-->
         <security:form-login login-page="/login"
                              default-target-url="/dashboard"

project2/web/WEB-INF/views/courseList.jsp

@@ -130,7 +130,19 @@
          style="background-image: url('${pageContext.request.contextPath}/resources/img/jason-blackeye-nyL-rzwP-Mk-unsplash.jpg'); margin-top: -58.59px;">
         <div class="mask d-flex align-items-center h-100" style="background-color: hsla(0, 0%, 100%, 0.5);">
             <div class="container d-flex justify-content-center">
-                <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回</button>
+                <div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回
+                            </button>
+                        </div>
+                    </div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="exportCSV()">导出</button>
+                        </div>
+                    </div>
+                </div>
                 <div class="table-container rounded-4 shadow-3-strong"
                      style="background-color: rgba(255,255,255,0.9); overflow-y: auto; max-height: 400px;">
                     <table class="table table-striped table-hover border-primary">
@@ -166,7 +178,18 @@
 
 
 <script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
-
+<script>
+    function exportCSV() {
+        // 构造请求 URL，根据需要导出的类型传递参数
+        var exportUrl = '/output/export-csv?type=course';  // 示例：导出学生数据
+        var link = document.createElement('a');
+        link.href = exportUrl;
+        link.style.display = 'none';
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+    }
+</script>
 
 </body>
 

project2/web/WEB-INF/views/scoreList.jsp

@@ -130,7 +130,20 @@
          style="background-image: url('${pageContext.request.contextPath}/resources/img/jason-blackeye-nyL-rzwP-Mk-unsplash.jpg'); margin-top: -58.59px;">
         <div class="mask d-flex align-items-center h-100" style="background-color: hsla(0, 0%, 100%, 0.5);">
             <div class="container d-flex justify-content-center">
-                <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回</button>
+                <div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回
+                            </button>
+                        </div>
+                    </div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="exportCSV()">导出</button>
+                        </div>
+                    </div>
+                </div>
+
                 <div class="table-container rounded-4 shadow-3-strong"
                      style="background-color: rgba(255,255,255,0.9); overflow-y: auto; max-height: 400px;">
                     <table class="table table-striped table-hover border-primary">
@@ -138,6 +151,8 @@
                         <tr>
                             <th scope="col">成绩ID</th>
                             <th scope="col">学号</th>
+                            <th scope="col">学生姓名</th>
+                            <th scope="col">课程ID</th>
                             <th scope="col">课程名</th>
                             <th scope="col">成绩</th>
                         </tr>
@@ -147,6 +162,8 @@
                             <tr>
                                 <td>${score.scoreID}</td>
                                 <td>${score.student.id}</td>
+                                <td>${score.student.name}</td>
+                                <td>${score.course.courseID}</td>
                                 <td>${score.course.courseName}</td>
                                 <td>${score.score}</td>
                             </tr>
@@ -168,7 +185,18 @@
 
 
 <script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
-
+<script>
+    function exportCSV() {
+        // 构造请求 URL，根据需要导出的类型传递参数
+        var exportUrl = '/output/export-csv?type=score';  // 示例：导出学生数据
+        var link = document.createElement('a');
+        link.href = exportUrl;
+        link.style.display = 'none';
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+    }
+</script>
 
 </body>
 

project2/web/WEB-INF/views/studentList.jsp

@@ -130,7 +130,19 @@
          style="background-image: url('${pageContext.request.contextPath}/resources/img/jason-blackeye-nyL-rzwP-Mk-unsplash.jpg'); margin-top: -58.59px;">
         <div class="mask d-flex align-items-center h-100" style="background-color: hsla(0, 0%, 100%, 0.5);">
             <div class="container d-flex justify-content-center">
-                <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回</button>
+                <div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="location.href='../dashboard'">返回
+                            </button>
+                        </div>
+                    </div>
+                    <div class="row">
+                        <div class="col-12">
+                            <button type="button" class="btn btn-primary" onclick="exportCSV()">导出</button>
+                        </div>
+                    </div>
+                </div>
                 <div class="table-container rounded-4 shadow-3-strong"
                      style="background-color: rgba(255,255,255,0.9); overflow-y: auto; max-height: 400px;">
                     <table class="table table-striped table-hover border-primary">
@@ -172,7 +184,18 @@
 
 
 <script type="text/javascript" src="${pageContext.request.contextPath}/resources/js/mdb.min.js"></script>
-
+<script>
+    function exportCSV() {
+        // 构造请求 URL，根据需要导出的类型传递参数
+        var exportUrl = '/output/export-csv?type=student';  // 示例：导出学生数据
+        var link = document.createElement('a');
+        link.href = exportUrl;
+        link.style.display = 'none';
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+    }
+</script>
 
 </body>