第四次作业后端代码

pom.xml

@@ -60,16 +60,33 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+
         <dependency>
-            <groupId>org.mybatis.spring.boot</groupId>
+            <groupId>com.baomidou</groupId>
-            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <artifactId>mybatis-plus-generator</artifactId>
-            <version>3.0.3</version>
+            <version>3.5.7</version>
         </dependency>
+
+        <dependency>
+            <groupId>org.freemarker</groupId>
+            <artifactId>freemarker</artifactId>
+            <version>2.3.31</version>
+        </dependency>
+
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
             <version>8.0.25</version>
-            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>mavenrepository.org.mapstruct</groupId>
+            <artifactId>mapstruct</artifactId>
+            <version>1.3.1.Final</version>
+        </dependency>
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
+            <version>3.5.7</version>
         </dependency>
     </dependencies>
 

src/main/java/com/c202201020140/tasks/Test.java

@@ -0,0 +1,34 @@
+package com.c202201020140.tasks;
+
+import com.baomidou.mybatisplus.generator.FastAutoGenerator;
+import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
+
+import java.nio.file.Paths;
+
+public class Test {
+        public static void main(String[] args) {
+            FastAutoGenerator.create("jdbc:mysql://106.53.194.250:63306/***?serverTimezone=UTC",
+                            "**", "@hnucm1254")
+                    .globalConfig(builder -> builder
+                            .author("Baomidou")
+                            .outputDir(Paths.get(System.getProperty("user.dir")) + "/src/main/java")
+                            .commentDate("yyyy-MM-dd")
+                    )
+                    .packageConfig(builder -> builder
+                            .parent("com.baomidou.mybatisplus")
+                            .entity("entity")
+                            .mapper("mapper")
+                            .service("service")
+                            .serviceImpl("service.impl")
+                            .xml("mapper.xml")
+                    )
+                    .strategyConfig(builder -> builder
+                            .entityBuilder()
+                            .enableLombok()
+                    )
+                    .templateEngine(new FreemarkerTemplateEngine())
+                    .execute();
+        }
+    }
+
+

src/main/java/com/c202201020140/tasks/controller/BookListController.java

@@ -0,0 +1,80 @@
+package com.c202201020140.tasks.controller;
+
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.c202201020140.tasks.model.Result;
+import com.c202201020140.tasks.model.BookList;
+import com.c202201020140.tasks.service.IBookListService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import java.util.List;
+
+@CrossOrigin
+@Controller  //控制器负责处理来自客户端的 HTTP 请求，并返回相应的响应。
+@RequestMapping("/bookList")
+public class BookListController {
+
+        //JSON方法返回数据
+        @Autowired//它可以用于字段、构造器、setter 方法等地方，Spring 容器会自动将匹配的 Bean 注入
+              IBookListService bookListService;
+    @ResponseBody //返回 JSON、XML 等格式的数据。
+    @RequestMapping("/BookList1")
+    public Result getBookList1(){
+        QueryWrapper<BookList> queryWrapper=new QueryWrapper<>();
+        queryWrapper.like("name", "test").or().eq("age",19);
+        List<BookList> list = bookListService.list(queryWrapper);
+        return Result.ok().put("data",list);
+
+    }
+    @ResponseBody //返回 JSON、XML 等格式的数据。
+    @RequestMapping("/login")
+    public Result login(String username,String password){
+        //todo=>查询数据库
+        if(username.equals("admin")&&password.equals("123456")){
+            return Result.ok("登录成功");
+        }
+        return Result.error("用户名或密码错误");
+    }
+
+
+        @ResponseBody //返回 JSON、XML 等格式的数据。
+        @RequestMapping("/BookList11")
+        public Result getStudentList(){
+            List<BookList> list = bookListService.list();
+            return Result.ok().put("data",list);
+        }
+
+        @ResponseBody
+        @RequestMapping("/addBookList")
+        public Result addBookList(BookList bookList){
+            boolean result = bookListService.save(bookList);
+            if(!result){
+                return Result.error("添加失败");
+            }
+            return Result.ok();
+        }
+
+        @ResponseBody
+        @RequestMapping("/updateBookList")
+        public Result updateBookList(BookList bookList){
+            boolean result = bookListService.saveOrUpdate(bookList);
+            if(!result){
+                return Result.error("修改失败");
+            }
+            return Result.ok();
+        }
+
+        @ResponseBody
+        @RequestMapping("/deleteBookList")
+        public Result deleteBookList(Integer id){
+            boolean result = bookListService.removeById(id);
+            if(!result){
+                return Result.error("删除失败");
+            }
+            return Result.ok();
+        }
+
+}

src/main/java/com/c202201020140/tasks/dao/BookListMapper.java

@@ -0,0 +1,12 @@
+package com.c202201020140.tasks.dao;
+
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.c202201020140.tasks.model.BookList;
+import org.apache.ibatis.annotations.Mapper;
+
+
+@Mapper
+public interface BookListMapper extends BaseMapper<BookList> {
+
+}

src/main/java/com/c202201020140/tasks/model/BookList.java

@@ -0,0 +1,26 @@
+package com.c202201020140.tasks.model;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.io.Serializable;
+
+@Getter
+@Setter
+public class BookList implements Serializable{
+
+
+        private static final long serialVersionUID = 1L;
+
+        @TableId(value = "id", type = IdType.AUTO)
+        private Integer id;
+        private String title;
+        private String author;
+        private String isbn;
+        private String publisher;
+        private String published_date;
+
+
+}

src/main/java/com/c202201020140/tasks/model/Result.java

@@ -0,0 +1,63 @@
+package com.c202201020140.tasks.model;
+
+
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * 返回数据封装类
+ */
+public class Result extends HashMap<String, Object> {
+    private static final long serialVersionUID = 1L;
+
+    public Result() {
+        put("code", 0);
+        put("msg", "success");
+    }
+
+    public static Result error() {
+        return error(500, "未知异常，请联系管理员");
+    }
+
+    public static Result error(String msg) {
+        return error(500, msg);
+    }
+
+    public static Result error(int code, String msg) {
+        Result r = new Result();
+        r.put("code", code);
+        r.put("msg", msg);
+        return r;
+    }
+
+    public static Result ok(String msg) {
+        Result r = new Result();
+        r.put("msg", msg);
+        return r;
+    }
+
+
+    public static Result ok(Object obj) {
+        Result r = new Result();
+        r.put("data", obj);
+        return r;
+    }
+
+    public static Result ok(Map<String, Object> map) {
+        Result r = new Result();
+        r.putAll(map);
+        return r;
+    }
+
+    public static Result ok() {
+        return new Result();
+    }
+
+    public Result put(String key, Object value) {
+        super.put(key, value);
+        return this;
+    }
+}
+
+

src/main/java/com/c202201020140/tasks/service/IBookListService.java

@@ -0,0 +1,11 @@
+package com.c202201020140.tasks.service;
+
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.c202201020140.tasks.model.BookList;
+
+
+
+public interface IBookListService extends IService<BookList> {
+
+}

src/main/java/com/c202201020140/tasks/service/impl/BookListServiceImpl.java

@@ -0,0 +1,14 @@
+package com.c202201020140.tasks.service.impl;
+
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.c202201020140.tasks.dao.BookListMapper;
+import com.c202201020140.tasks.model.BookList;
+import com.c202201020140.tasks.service.IBookListService;
+import org.springframework.stereotype.Service;
+
+
+@Service
+public class BookListServiceImpl extends ServiceImpl<BookListMapper, BookList> implements IBookListService {
+
+}

src/main/resources/application.properties

@@ -9,8 +9,8 @@ spring.datasource.username=202201020140
 spring.datasource.password=@hnucm1254
 #??????????MyBatis??
 #??Mybatis?Mapper??
-mybatis.mapper-locations=classpath:mapper/*.xml
+mybatis-plus.mapper-locations=classpath:mapper/*.xml
 #??Mybatis?????
-mybatis.type-aliases-package=com.c202201020140.tasks.model
+mybatis-plus.type-aliases-package=com.c202201020140.tasks.model
 #????
 logging.level.com.yilinxuan.springboot.springboot = debug

src/main/resources/mapper/BookListMapper.xml

@@ -0,0 +1,7 @@
+<?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.c202201020140.tasks.dao.BookListMapper">
+
+
+</mapper>