diff --git a/src/servlet/Submit/S_StudentFillTopicInformation.java b/src/servlet/S_StudentFillTopicInformation.java
similarity index 96%
rename from src/servlet/Submit/S_StudentFillTopicInformation.java
rename to src/servlet/S_StudentFillTopicInformation.java
index a71f113..9de7b1e 100644
--- a/src/servlet/Submit/S_StudentFillTopicInformation.java
+++ b/src/servlet/S_StudentFillTopicInformation.java
@@ -1,4 +1,4 @@
-package servlet.Submit;
+package servlet;
 
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
diff --git a/src/servlet/Select/S_StudentSelectTeacher.java b/src/servlet/S_StudentSelectTeacher.java
similarity index 74%
rename from src/servlet/Select/S_StudentSelectTeacher.java
rename to src/servlet/S_StudentSelectTeacher.java
index 11ba9f3..bc76e6c 100644
--- a/src/servlet/Select/S_StudentSelectTeacher.java
+++ b/src/servlet/S_StudentSelectTeacher.java
@@ -1,4 +1,4 @@
-package servlet.Select;
+package servlet;
 
 import core.process.C_StudentSearchTeacher;
 import core.process.C_StudentSelectTeacher;
@@ -9,7 +9,7 @@ import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
-@WebServlet("/studentselectteacher")
+@WebServlet("/student-select-teacher")
 public class S_StudentSelectTeacher extends HttpServlet {
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
         super.doPost(request, response);
@@ -17,11 +17,13 @@ public class S_StudentSelectTeacher extends HttpServlet {
         User user=(User)request.getSession().getAttribute("user");
         String student_id=user.getId();
         try {
-            C_StudentSelectTeacher test=new C_StudentSelectTeacher();
-            test.setTeacherId(teacher_id);
-            test.setStudentId(student_id);
+            C_StudentSelectTeacher SST=new C_StudentSelectTeacher();
+            SST.setTeacherId(teacher_id);
+            SST.setStudentId(student_id);
+            SST.select();
         } catch (Exception e) {
             e.printStackTrace();
+            response.sendRedirect("/op_fail.jsp");
         }
     }
 }
diff --git a/src/servlet/Submit/S_StudentUploadOpeningReport.java b/src/servlet/S_StudentUploadOpeningReport.java
similarity index 95%
rename from src/servlet/Submit/S_StudentUploadOpeningReport.java
rename to src/servlet/S_StudentUploadOpeningReport.java
index 78afd75..df0f052 100644
--- a/src/servlet/Submit/S_StudentUploadOpeningReport.java
+++ b/src/servlet/S_StudentUploadOpeningReport.java
@@ -1,4 +1,4 @@
-package servlet.Submit;
+package servlet;
 
 import core.user.User;
 
@@ -12,7 +12,7 @@ import javax.servlet.http.Part;
 import java.io.IOException;
 import java.util.UUID;
 
-@WebServlet("/upload")
+@WebServlet("/student-upload-opening-report")
 @MultipartConfig
 //学生id+文件
 public class S_StudentUploadOpeningReport extends HttpServlet {
diff --git a/src/servlet/Select/S_TeacherSelectStudent.java b/src/servlet/S_TeacherSelectStudent.java
similarity index 73%
rename from src/servlet/Select/S_TeacherSelectStudent.java
rename to src/servlet/S_TeacherSelectStudent.java
index 0bd9ad4..fe20103 100644
--- a/src/servlet/Select/S_TeacherSelectStudent.java
+++ b/src/servlet/S_TeacherSelectStudent.java
@@ -1,4 +1,4 @@
-package servlet.Select;
+package servlet;
 
 import core.process.C_TeacherSelectStudent;
 import core.user.User;
@@ -9,7 +9,7 @@ import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
-@WebServlet("/teacherselectstudent")
+@WebServlet("/teacher-select-student")
 public class S_TeacherSelectStudent extends HttpServlet {
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
         super.doPost(request, response);
@@ -17,11 +17,13 @@ public class S_TeacherSelectStudent extends HttpServlet {
         User user=(User)request.getSession().getAttribute("user");
         String teacher_id=user.getId();
         try {
-            C_TeacherSelectStudent test=new C_TeacherSelectStudent();
-            test.setTeacherId(teacher_id);
-            test.setStudentId(student_id);
+            C_TeacherSelectStudent TSS=new C_TeacherSelectStudent();
+            TSS.setTeacherId(teacher_id);
+            TSS.setStudentId(student_id);
+            TSS.select();
         } catch (Exception e) {
             e.printStackTrace();
+            response.sendRedirect("/op_fail.jsp");
         }
     }
 }
diff --git a/src/servlet/Submit/S_ScoreSubmit.java b/src/servlet/Submit/S_ScoreSubmit.java
deleted file mode 100644
index 8e8a11c..0000000
--- a/src/servlet/Submit/S_ScoreSubmit.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package servlet.Submit;
-
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import java.io.IOException;
-
-public class S_ScoreSubmit extends HttpServlet {
-    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
-        super.doPost(request, response);
-        String score = request.getParameter("score");
-
-    }
-}
diff --git a/src/servlet/Submit/S_TextSubmit.java b/src/servlet/Submit/S_TextSubmit.java
deleted file mode 100644
index f799e8a..0000000
--- a/src/servlet/Submit/S_TextSubmit.java
+++ /dev/null
@@ -1,23 +0,0 @@
-package servlet.Submit;
-
-
-import javax.servlet.ServletException;
-import javax.servlet.annotation.WebServlet;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import java.io.IOException;
-@WebServlet("/textsubmit")
-public class S_TextSubmit extends HttpServlet {
-    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
-        super.doPost(request, response);
-        String content=new String(request.getParameter("text").getBytes("ISO8859-1"),"UTF-8");
-        String score=request.getParameter("score");
-        try {
-
-
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-}
diff --git a/src/servlet/account/S_Login.java b/src/servlet/account/S_Login.java
index c394db1..f7b9506 100644
--- a/src/servlet/account/S_Login.java
+++ b/src/servlet/account/S_Login.java
@@ -18,10 +18,10 @@ import error.GExcptSQL;
 @WebServlet("/login")
 public class S_Login extends HttpServlet {
     protected void doPost(HttpServletRequest request, HttpServletResponse response)
-            throws ServletException, IOException {
+            throws IOException {
         String id=request.getParameter("id");
         String password=request.getParameter("password");
-        User user = null;
+        User user;
         try {
             user = AccountManagement.login(id,password);
         } catch (GExcptSQL | SQLException gExcptSQL) {