HTTP Status 500 - Result Maps 集合不包含 com.itheima.mapper.StudentMapper.studentResultMap 的值

package com.itheima.pojo;

public class Student {
    private String studentNember;
    private String name;
    private String dateOfBirth;
    private String gender;
    private String address;
    private String phoneNumber;
    private Integer  shiftNumber;

    public Student() {

    }
    public Student(String studentNember, String name, String dateOfBirth, String gender, String address, String phoneNumber, Integer shiftNumber) {
        this.studentNember = studentNember;
        this.name = name;
        this.dateOfBirth = dateOfBirth;
        this.gender = gender;
        this.address = address;
        this.phoneNumber = phoneNumber;
        this.shiftNumber = shiftNumber;
    }

    public String getStudentNember() {
        return studentNember;
    }

    public void setStudentNember(String studentNember) {
        this.studentNember = studentNember;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDateOfBirth() {
        return dateOfBirth;
    }

    public void setDateOfBirth(String dateOfBirth) {
        this.dateOfBirth = dateOfBirth;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getPhoneNumber() {
        return phoneNumber;
    }

    public void setPhoneNumber(String phoneNumber) {
        this.phoneNumber = phoneNumber;
    }

    public Integer getShiftNumber() {
        return shiftNumber;
    }

    public void setShiftNumber(Integer shiftNumber) {
        this.shiftNumber = shiftNumber;
    }

    @Override
    public String toString() {
        return "Student{" +
                "studentNember='" + studentNember + '\'' +
                ", name='" + name + '\'' +
                ", dateOfBirth='" + dateOfBirth + '\'' +
                ", gender='" + gender + '\'' +
                ", address='" + address + '\'' +
                ", phoneNumber='" + phoneNumber + '\'' +
                ", shiftNumber=" + shiftNumber +
                '}';
    }
}

servic如下

package com.itheima.service;

import com.itheima.mapper.StudentMapper;
import com.itheima.pojo.Student;
import com.itheima.util.SqlSessionFactoryUtils;
import org.apache.ibatis.jdbc.SQL;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;

import java.util.List;

public class StudentService {
    //调用StudentMapper.selectAll()
    SqlSessionFactory factory = SqlSessionFactoryUtils.getSqlSessionFactory();
    public List<Student> selectAll() {
        //2.获取SqlSession
        SqlSession sqlSession = factory.openSession();
        //3.获取StudentMapper
        StudentMapper mapper = sqlSession.getMapper(StudentMapper.class);
        //4.调用方法
        List<Student> students = mapper.selectAll();

        sqlSession.close();

        return  students;
    }
}

util如下

package com.itheima.util;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

public class SqlSessionFactoryUtils {
    private  static SqlSessionFactory sqlSessionFactory;
    //静态代码块会随着累的加载自动执行,扯只执行一次
    static {
        //2.1 获取SqlSessionFactory对象
        try {
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            //
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static SqlSessionFactory getSqlSessionFactory() {
          return  sqlSessionFactory;
    }
}

mapper如下

package com.itheima.mapper;

import com.itheima.pojo.Student;
import org.apache.ibatis.annotations.ResultMap;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface StudentMapper {
//    查询所有
    @Select("select * from student")
    @ResultMap("studentResultMap")
    List<Student> selectAll();
}

web如下 

package com.itheima.web;

import com.itheima.pojo.Student;
import com.itheima.service.StudentService;

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;
import java.util.List;

@WebServlet("/selectAllServLet")
public class SelectAllServLet extends HttpServlet {
    private StudentService service = new StudentService();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1.调用StudentService完成查询
        List<Student> students = service.selectAll();
        //2.存入request域中
        req.setAttribute("student",students);
        //3.转发student.jsp
        req.getRequestDispatcher("/student.jsp").forward(req,resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doGet(req, resp);
    }
}

student.jsp如下

<%--
  Created by IntelliJ IDEA.
  User: 35127
  Date: 2023/5/6
  Time: 21:04
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%--引入jstl--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html>
<head>
    <meta charset="UTF-8">
    <title>Title</title>
<%--     <style>--%>
<%--       td {--%>
<%--         text-align: center;--%>
<%--       }--%>
<%--     </style>--%>
</head>
<body>
<table border="1" cellspacing="0" width="600">
  <tr>
    <td>学号</td>
    <td>姓名</td>
    <td>出生日期</td>
    <td>性别</td>
    <td>家庭住址</td>
    <td>联系电话</td>
    <td>班号</td>
    <td>操作</td>
  </tr>
  <c:forEach items="${students}" var="student">
    <tr align="center">
      <td>${student.studentNumber}</td>
      <td>${student.name}</td>
      <td>${student.dateOfBirth}</td>
      <td>${student.gender}</td>
      <td>${student.address}</td>
      <td>${student.phoneNumber}</td>
      <td>${student.shiftNumber}</td>
      <td><a href="#">修改</a><a href="#">删除</a></td>
    </tr>
  </c:forEach>
</table>
</body>
</html>

mapper.xml如下

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.itheima.mapper.StudentMapper">
        <resultMap id="studentResultMap" type="student">
            <result column="学号" property="studentNember"></result>
            <result column="姓名" property="name"></result>
            <result column="出生日期" property="dateOfBirth"></result>
            <result column="性别" property="gender"></result>
            <result column="家庭住址" property="address"></result>
            <result column="联系电话" property="phoneNumber"></result>
            <result column="班号" property="shiftNumber"></result>
        </resultMap>
</mapper>

数据库如下

pom.xml(依赖如下)

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>tomcats</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>

  <name>tomcats Maven Webapp</name>
  <url>http://maven.apache.org</url>


  <dependencies>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.6</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.5</version>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.46</version>
    </dependency>

<!--    jstl-->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

<!--    //这里jst1.2包含standard,可以不用导入standard；-->
<!--    <dependency>-->
<!--      <groupId>taglibs</groupId>-->
<!--      <artifactId>standard</artifactId>-->
<!--      <version>1.1.2</version>-->
<!--    </dependency>-->

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
      <scope>provided</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>tomcats</finalName>
    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.2</version>
        <configuration>
<!--          //解决中文乱码: <uriEncoding>UTF-8</uriEncoding>-->
          <uriEncoding>UTF-8</uriEncoding>
          <port>80</port>
          <path>/</path>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

运行如下

 jdk版本17，tomcat8.5.88,web.xml3.1