diff --git "a/10 \346\234\261\345\277\227\351\271\217/\344\275\234\344\270\232 (2).md" "b/10 \346\234\261\345\277\227\351\271\217/\344\275\234\344\270\232 (2).md"
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+++ "b/10 \346\234\261\345\277\227\351\271\217/\344\275\234\344\270\232 (2).md"	
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+# 作业，
+
+* 1 数据库相关的操作，使用封装的工具类
+
+* 2 编写四个servlet，使用注解指定相关的访问路径，分别对应查询，修改，删除，添加的操作
+
+* 3 从浏览器中，访问这中个路径，显示响应的信息，查询显示结果，其它的显示成功或是失败
+
+* 4 预习题：如何通过浏览器传送请求参数给servlet，servlet如何接收这些参数，并使用这些参数，去影响数据库的操作？
+  
+  ```
+  package com.mxdx.servlet;
+  
+  
+  import javax.servlet.ServletException;
+  import javax.servlet.http.HttpServlet;
+  import javax.servlet.http.HttpServletRequest;
+  import javax.servlet.http.HttpServletResponse;
+  import java.io.IOException;
+  import java.sql.*;
+  
+  public class Student02 extends HttpServlet {
+      @Override
+      protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+          System.out.println("DoGet is running .......");
+  
+  
+          try {
+              Class.forName("com.mysql.jdbc.Driver");
+              Connection conn = DriverManager.getConnection("jdbc:mysql:///student?useSSl=false&useUnicode=true&characterEncoding=utf8", "root", "123456789");
+              String sql="select * from stu";
+              PreparedStatement pst = conn.prepareStatement(sql);
+              ResultSet rst = pst.executeQuery();
+              while (rst.next()){
+                  int id = rst.getInt("id");
+                  String name = rst.getString("name");
+                  String sex = rst.getString("sex");
+                  System.out.println(id+name+sex);
+  
+              }
+          } catch (ClassNotFoundException e) {
+              e.printStackTrace();
+          } catch (SQLException e) {
+              e.printStackTrace();
+          }
+  
+      }
+  
+      @Override
+      protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+          super.doPost(req, resp);
+      }
+  }
+  ```
+
+