初识 Spring(18)---(SpringMVC实战--构建学生管理系统（08））
SpringMVC实战--构建学生管理系统（08）
首页部分成绩管理页面（查询/添加功能）制作（在上篇博客基础上继续）
（源代码见仓库：https://gitee.com/jianghao233/course）
新建 courseManger.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
课程ID
课程名称
操作
1
java
编辑
删除
2
PHP
编辑
删除
3
C++
编辑
删除
4
C#
编辑
删除
<
1
>
4
20
新建 CourseController.java
package com.neuedu.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.neuedu.po.TbCourse;
import com.neuedu.service.CourseService;
@Controller
@RequestMapping("/course")
public class CourseController {
@Autowired
private CourseService courseService;
@RequestMapping({"/","/list"})
public String list() {
//查询课程列表
return "admin/courseManager";
}
@RequestMapping("/showAdd")
public String showAdd() {
return "admin/courseAdd";
}
@RequestMapping("/save")
public String save(TbCourse tbCourse){
//调用service保存课程信息
courseService.save(tbCourse);
return "redirect:/course/";
}
}
修改 index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
这节功能中的 添加 页面单独写 新建：courseAdd.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
课程添加
新建接口 TbCourseMapper.java
package com.neuedu.mapper;
import com.neuedu.po.TbCourse;
public interface TbCourseMapper {
int deleteByPrimaryKey(Integer courseid);
int insert(TbCourse record);
int insertSelective(TbCourse record);
TbCourse selectByPrimaryKey(Integer courseid);
int updateByPrimaryKeySelective(TbCourse record);
int updateByPrimaryKey(TbCourse record);
}配置文件 TbCourseMapper.xml
courseid, coursename, hour, score, picurl
delete from tb_course
where courseid = #{courseid,jdbcType=INTEGER}
insert into tb_course (courseid, coursename, hour,
score, picurl)
values (#{courseid,jdbcType=INTEGER}, #{coursename,jdbcType=VARCHAR}, #{hour,jdbcType=INTEGER},
#{score,jdbcType=DOUBLE}, #{picurl,jdbcType=VARCHAR})
insert into tb_course
courseid,
coursename,
hour,
score,
picurl,
#{courseid,jdbcType=INTEGER},
#{coursename,jdbcType=VARCHAR},
#{hour,jdbcType=INTEGER},
#{score,jdbcType=DOUBLE},
#{picurl,jdbcType=VARCHAR},
update tb_course
coursename = #{coursename,jdbcType=VARCHAR},
hour = #{hour,jdbcType=INTEGER},
score = #{score,jdbcType=DOUBLE},
picurl = #{picurl,jdbcType=VARCHAR},
where courseid = #{courseid,jdbcType=INTEGER}
update tb_course
set coursename = #{coursename,jdbcType=VARCHAR},
hour = #{hour,jdbcType=INTEGER},
score = #{score,jdbcType=DOUBLE},
picurl = #{picurl,jdbcType=VARCHAR}
where courseid = #{courseid,jdbcType=INTEGER}
新建接口 CourseService.java
package com.neuedu.service;
import com.neuedu.po.TbCourse;
public interface CourseService {
void save(TbCourse tbCourse);
}
配置文件 CourseServiceImpl.java
package com.neuedu.service.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.neuedu.mapper.TbCourseMapper;
import com.neuedu.po.TbCourse;
import com.neuedu.service.CourseService;
@Service
public class CourseServiceImpl implements CourseService {
@Autowired
private TbCourseMapper courseMapper;
@Override
public void save(TbCourse tbCourse) {
courseMapper.insertSelective(tbCourse);
}
}
输出：点击 课程管理 --进入课程管理页面--点击 添加 ---进入添加页面---输入信息--点击提交---信息保存至数据库
问题是，数据库与页面没有进行绑定，页面是写死的，没办法从数据库获取并展示信息，继续修改代码
绑定数据库，使数据库中的信息显示在页面上
修改接口 TbCourseMapper.java
package com.neuedu.mapper;
import java.util.List;
import com.neuedu.po.TbCourse;
public interface TbCourseMapper {
int deleteByPrim aryKey(Integer courseid);
int insert(TbCourse record);
int insertSelective(TbCourse record);
TbCourse selectByPrimaryKey(Integer courseid);
int updateByPrimaryKeySelective(TbCourse record);
int updateByPrimaryKey(TbCourse record);
public List getList(); //新增代码
} 修改配置文件 TbCourseMapper.xml
courseid, coursename, hour, score, picurl
delete from tb_course
where courseid = #{courseid,jdbcType=INTEGER}
insert into tb_course (courseid, coursename, hour,
score, picurl)
values (#{courseid,jdbcType=INTEGER}, #{coursename,jdbcType=VARCHAR}, #{hour,jdbcType=INTEGER},
#{score,jdbcType=DOUBLE}, #{picurl,jdbcType=VARCHAR})
insert into tb_course
courseid,
coursename,
hour,
score,
picurl,
#{courseid,jdbcType=INTEGER},
#{coursename,jdbcType=VARCHAR},
#{hour,jdbcType=INTEGER},
#{score,jdbcType=DOUBLE},
#{picurl,jdbcType=VARCHAR},
update tb_course
coursename = #{coursename,jdbcType=VARCHAR},
hour = #{hour,jdbcType=INTEGER},
score = #{score,jdbcType=DOUBLE},
picurl = #{picurl,jdbcType=VARCHAR},
where courseid = #{courseid,jdbcType=INTEGER}
update tb_course
set coursename = #{coursename,jdbcType=VARCHAR},
hour = #{hour,jdbcType=INTEGER},
score = #{score,jdbcType=DOUBLE},
picurl = #{picurl,jdbcType=VARCHAR}
where courseid = #{courseid,jdbcType=INTEGER}
//新增代码
修改接口 CourseService.java
package com.neuedu.service;
import java.util.List;
import com.neuedu.po.TbCourse;
public interface CourseService {
void save(TbCourse tbCourse);
List getList(); //新增代码
}
修改配置文件 CourseServiceImpl.java
package com.neuedu.service.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.neuedu.mapper.TbCourseMapper;
import com.neuedu.po.TbCourse;
import com.neuedu.service.CourseService;
@Service
public class CourseServiceImpl implements CourseService {
@Autowired
private TbCourseMapper courseMapper;
@Override
public void save(TbCourse tbCourse) {
courseMapper.insertSelective(tbCourse);
}
@Override //新增代码
public List getList() {
return courseMapper.getList();
} //新增代码
}
修改 CourseController.java
package com.neuedu.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import com.neuedu.po.TbCourse;
import com.neuedu.service.CourseService;
@Controller
@RequestMapping("/course")
public class CourseController {
@Autowired
private CourseService courseService;
@RequestMapping({"/","/list"}) //新增代码
public String list(Model model) {
//查询课程列表
List list = courseService.getList();
model.addAttribute("list",list); //新增代码
return "admin/courseManager";
}
@RequestMapping("/showAdd")
public String showAdd() {
return "admin/courseAdd";
}
@RequestMapping("/save")
public String save(TbCourse tbCourse){
//调用service保存课程信息
courseService.save(tbCourse);
return "redirect:/course/";
}
}
修改 courseManager.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
课程ID
课程名称
课程学时 //新增代码
课程学分
操作
//新增代码
${c.courseid }
${c.coursename }
${c.hour }
${c.score }
编辑
删除
//新增代码
<
1
>
4
20
输出：点击 课程管理 --进入课程管理页面--保存至数据库的信息已添加到页面
