diff --git "a/29 \350\267\257\347\216\262/20240109 mvc08.md" "b/29 \350\267\257\347\216\262/20240109 mvc08.md"
new file mode 100644
index 0000000000000000000000000000000000000000..70e5d1d8ede0d5f0c15cf20ac4e1d9f3c9f255f3
--- /dev/null
+++ "b/29 \350\267\257\347\216\262/20240109 mvc08.md"	
@@ -0,0 +1,445 @@
+com.mdd.domain.Book
+
+```java
+package com.mdd.domain;
+
+public class Book {
+
+    private Integer id;
+    private String bookName;
+    private String author;
+    private String publisher;
+
+    @Override
+    public String toString() {
+        return "Book{" +
+                "id=" + id +
+                ", bookName='" + bookName + '\'' +
+                ", author='" + author + '\'' +
+                ", publisher='" + publisher + '\'' +
+                '}';
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getBookName() {
+        return bookName;
+    }
+
+    public void setBookName(String bookName) {
+        this.bookName = bookName;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(String publisher) {
+        this.publisher = publisher;
+    }
+
+    public Book(Integer id, String bookName, String author, String publisher) {
+        this.id = id;
+        this.bookName = bookName;
+        this.author = author;
+        this.publisher = publisher;
+    }
+
+    public Book() {
+    }
+}
+
+```
+
+com.mdd.config.JdbcConfig
+
+```java
+package com.mdd.config;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import org.springframework.context.annotation.Bean;
+
+import javax.sql.DataSource;
+
+public class JdbcConfig {
+    @Bean
+    public DataSource dataSource(){
+        DruidDataSource ds = new DruidDataSource();
+        ds.setDriverClassName("com.mysql.cj.jdbc.Driver");
+        ds.setUrl("jdbc:mysql:///ssm");
+        ds.setUsername("root");
+        ds.setPassword("root");
+        return ds;
+    }
+}
+```
+
+com.mdd.config.MybatisConfig
+
+```java
+package com.mdd.config;
+
+import org.mybatis.spring.SqlSessionFactoryBean;
+import org.mybatis.spring.mapper.MapperScannerConfigurer;
+import org.springframework.context.annotation.Bean;
+
+import javax.sql.DataSource;
+
+public class MybatisConfig {
+
+    //连接数据库，实体类
+    @Bean
+    public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource){
+        SqlSessionFactoryBean ssfn = new SqlSessionFactoryBean();
+        ssfn.setTypeAliasesPackage("com.mdd.domain");
+        ssfn.setDataSource(dataSource);
+        return ssfn;
+    }
+
+
+    @Bean
+    public MapperScannerConfigurer mapperScannerConfigurer(){
+        MapperScannerConfigurer msc = new MapperScannerConfigurer();
+        msc.setBasePackage("com.mdd.mapper");
+        return msc;
+    }
+
+```
+
+com.mdd.config.SpringConfig
+
+```java
+package com.mdd.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+@Configuration
+@ComponentScan({"com.mdd.mapper","com.mdd.service"})
+@Import({JdbcConfig.class, MybatisConfig.class})
+public class SpringConfig {
+}
+```
+
+com.mdd.config.SpringMvcConfig
+
+```java
+package com.mdd.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+@ComponentScan("com.mdd.controller")
+@EnableWebMvc
+public class SpringMvcConfig implements WebMvcConfigurer {
+
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/index.html").addResourceLocations("/index.html");
+    }
+}
+```
+
+com.mdd.config.WebConfig
+
+```java
+package com.mdd.config;
+
+import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+
+public class WebConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
+    protected Class<?>[] getRootConfigClasses() {
+        return new Class[]{SpringConfig.class};
+    }
+
+    protected Class<?>[] getServletConfigClasses() {
+        return new Class[]{SpringMvcConfig.class};
+    }
+
+    protected String[] getServletMappings() {
+        return new String[]{"/"};
+    }
+}
+
+```
+
+com.mdd.controller.Code
+
+```java
+package com.mdd.controller;
+
+public class Code {
+    //增加，删除，修改，查询四种操作，code尾数为1则是成功，尾数为0则是失败
+
+    public static final Integer GET_OK = 2001;
+    public static final Integer POTS_OK = 3001;
+    public static final Integer PUT_OK = 4001;
+    public static final Integer DELETE_OK = 5001;
+
+
+
+    public static final Integer GET_ERR = 2000;
+    public static final Integer POST_ERR = 3000;
+    public static final Integer PUT_ERR = 4000;
+    public static final Integer DELETE_ERR = 5000;
+    
+
+}
+```
+
+com.mdd.controller.R
+
+```java
+package com.mdd.controller;
+
+public class R {
+    private Integer id;
+    private String msg;
+    private Object data;//一定要写成object类型
+
+    public R() {
+    }
+
+    public R(Integer id, String msg) {
+        this.id = id;
+        this.msg = msg;
+    }
+
+    public R(Integer id, Object data) {
+        this.id = id;
+        this.data = data;
+    }
+
+    public R(Integer id, String msg, Object data) {
+        this.id = id;
+        this.msg = msg;
+        this.data = data;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getMsg() {
+        return msg;
+    }
+
+    public void setMsg(String msg) {
+        this.msg = msg;
+    }
+
+    public Object getData() {
+        return data;
+    }
+
+    public void setData(Object data) {
+        this.data = data;
+    }
+
+    @Override
+    public String toString() {
+        return "R{" +
+                "id=" + id +
+                ", msg='" + msg + '\'' +
+                ", data=" + data +
+                '}';
+    }
+}
+
+```
+
+com.mdd.controller.BookController
+
+```java
+package com.mdd.controller;
+
+import com.mdd.domain.Book;
+import com.mdd.service.BookService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/books")
+public class BookController {
+
+    @Autowired
+    private BookService bookService;
+
+    //查询所有
+    @GetMapping
+    public List<Book> getBooks() {
+        List<Book> bookList = bookService.getBooks();  // 查询结果可能是空，也可能有数据
+        Integer code = bookList != null ? Code.GET_OK : Code.GET_ERR;
+        Object data = bookList != null ? bookList : "查询失败！";
+        return bookList;
+    }
+
+    //增加
+    @PostMapping
+    public R addBook(@RequestBody Book book){
+      Boolean falg =  bookService.addBook(book);
+        if (falg) {
+            return new R(Code.POST_ERR,"添加成功！");
+        }else{
+            return  new R(Code.POST_ERR,"添加失败！");
+        }
+    }
+
+    //修改
+    @PutMapping
+    public R updateBook(@RequestBody Book book){
+       Boolean flag = bookService.updateBook(book);
+       Integer code = flag ? Code.PUT_OK :Code.PUT_ERR;
+       String msg = flag ? "修改成功！":"修改失败！";
+       return new R(code,msg);
+    }
+
+
+
+    //根据id删除
+    @DeleteMapping("/{id}")
+    public R deleteBook(@PathVariable Integer id){
+        Boolean flag = bookService.deleteBook(id);
+        Integer code = flag ? Code.DELETE_OK : Code.DELETE_ERR;
+        String msg = flag ? "删除成功！":"删除失败！";
+        return new R(code,msg);
+    }
+
+
+
+
+    //按照id查询
+
+    @GetMapping("/{id}")
+    public R getBookById(@PathVariable Integer id){
+        Book book = bookService.getBookById(id);
+        Integer code = book !=null ? Code.GET_OK:Code.GET_ERR;
+        Object data = book != null ? book:"查询失败！";
+         return new R(code,data);
+    }
+
+
+
+}
+```
+
+com.mdd.service.BookService
+
+```java
+package com.mdd.service;
+
+import com.mdd.domain.Book;
+
+import java.util.List;
+
+public interface BookService {
+    Boolean addBook(Book book);
+
+    List<Book> getBooks();
+
+    Boolean updateBook(Book book);
+
+    Book getBookById(Integer id);
+
+    Boolean deleteBook(Integer id);
+}
+```
+
+com.mdd.service.Impl.BookServiceImpl
+
+```java
+package com.mdd.service.Impl;
+
+import com.mdd.domain.Book;
+import com.mdd.mapper.BookMapper;
+import com.mdd.service.BookService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class BookServiceImpl implements BookService {
+
+    @Autowired
+    private BookMapper bookMapper;
+
+
+    public Boolean addBook(Book book) {
+        return bookMapper.addBook(book)>0;
+    }
+
+    public List<Book> getBooks() {
+        return bookMapper.getBook();
+    }
+
+    public Boolean updateBook(Book book) {
+        return bookMapper.updateBook(book)>0;
+    }
+
+    public Book getBookById(Integer id) {
+        return bookMapper.getBookById(id);
+    }
+
+    public Boolean deleteBook(Integer id) {
+        return bookMapper.deleteBook(id);
+    }
+}
+```
+
+src/main/java/com/mdd/mapper/BookMapper.java
+
+```java
+package com.mdd.mapper;
+
+import com.mdd.domain.Book;
+import org.apache.ibatis.annotations.Delete;
+import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
+
+import java.util.List;
+
+public interface BookMapper {
+    @Insert("insert into tb_book (book_name, author, publisher) values (#{bookName}, #{author}, #{publisher}) ")
+    Integer addBook(Book book);
+
+    @Select("select id, book_name bookName, author, publisher from tb_book")
+    List<Book> getBook();
+
+    @Update("update tb_book set book_name = #{bookName},author = #{author},publisher = #{publisher} where id = #{id}")
+    Integer updateBook(Book book);
+
+    @Select("select id, book_name bookName, author, publisher from tb_book where id=#{id}")
+    Book getBookById(Integer id);
+
+    @Delete("delete from tb_book where id = #{id}")
+    Boolean deleteBook(Integer id);
+}
+
+```
+
diff --git "a/29 \350\267\257\347\216\262/20240110 mvc09.md" "b/29 \350\267\257\347\216\262/20240110 mvc09.md"
new file mode 100644
index 0000000000000000000000000000000000000000..83d8c8faa4f48a04143295fd2b18cb12223f21ee
--- /dev/null
+++ "b/29 \350\267\257\347\216\262/20240110 mvc09.md"	
@@ -0,0 +1,549 @@
+springmvc完整版（开发）
+
+pom.xml
+
+```xml
+<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>com.mdd</groupId>
+  <artifactId>ssm</artifactId>
+  <packaging>war</packaging>
+  <version>1.0-SNAPSHOT</version>
+
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+  </properties>
+
+  <dependencies>
+    <!--  1 spring-webmvc-->
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-webmvc</artifactId>
+      <version>5.2.25.RELEASE</version>
+    </dependency>
+    <dependency>
+      <!--  2 javax.servlet-api-->
+      <groupId>javax.servlet</groupId>
+      <artifactId>javax.servlet-api</artifactId>
+      <version>3.1.0</version>
+      <scope>provided</scope>
+    </dependency>
+    <!--    要使用json导入一个坐标jackson-->
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-databind</artifactId>
+      <version>2.9.1</version>
+    </dependency>
+
+    <!--        2.spring-jdbc -->
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-jdbc</artifactId>
+      <version>5.2.25.RELEASE</version>
+    </dependency>
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-test</artifactId>
+      <version>5.2.25.RELEASE</version>
+    </dependency>
+    <!--        4.mybatis-->
+    <dependency>
+      <groupId>org.mybatis</groupId>
+      <artifactId>mybatis</artifactId>
+      <version>3.5.13</version>
+    </dependency>
+    <!--        4.mybatis整合spring-->
+    <dependency>
+      <groupId>org.mybatis</groupId>
+      <artifactId>mybatis-spring</artifactId>
+      <version>2.0.5</version>
+    </dependency>
+    <!--mysql驱动-->
+    <dependency>
+      <groupId>com.mysql</groupId>
+      <artifactId>mysql-connector-j</artifactId>
+      <version>8.1.0</version>
+    </dependency>
+    <!--junit测试框架的坐标-->
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.13.2</version>
+      <scope>test</scope>
+    </dependency>
+    <!--    阿里巴巴，drui 数据源连接池对应的坐标-->
+    <dependency>
+      <groupId>com.alibaba</groupId>
+      <artifactId>druid</artifactId>
+      <version>1.1.23</version>
+    </dependency>
+
+
+  </dependencies>
+
+
+
+  <build>
+    <!--   3 tomcat7-maven-plugin-->
+    <plugins>
+      <plugin>
+        <groupId>org.apache.tomcat.maven</groupId>
+        <artifactId>tomcat7-maven-plugin</artifactId>
+        <version>2.2</version>
+        <configuration>
+          <port>80</port>
+          <path>/</path>
+          <!--          解决请求中文乱码-->
+          <uriEncoding>utf-8</uriEncoding>
+        </configuration>
+      </plugin>
+
+    </plugins>
+  </build>
+</project>
+
+```
+
+src/main/java/com/mdd/config/WebConfig.java
+
+```java
+package com.mdd.config;
+
+import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+
+public class WebConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
+    @Override //这个注解别忘记写
+    protected Class<?>[] getRootConfigClasses() {
+        return new Class[]{SpringConfig.class};
+    }
+    @Override
+    protected Class<?>[] getServletConfigClasses() {
+        return new Class[]{SpringMvcConfig.class};
+    }
+    @Override
+    protected String[] getServletMappings() {
+        return new String[]{"/"};
+    }
+}
+
+```
+
+src/main/java/com/mdd/config/SpringMvcConfig.java
+
+```java
+package com.mdd.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+@ComponentScan("com.mdd.controller")
+@EnableWebMvc
+public class SpringMvcConfig implements WebMvcConfigurer {
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/index.html").addResourceLocations("/index.html");
+        registry.addResourceHandler("/favicon.ico").addResourceLocations("/favicon.ico");
+    }
+}
+```
+
+src/main/java/com/mdd/config/SpringConfig.java
+
+```java
+package com.mdd.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+@Configuration
+@ComponentScan({"com.mdd.mapper","com.mdd.service"})
+@Import({JdbcConfig.class, MybatisConfig.class})
+public class SpringConfig {
+}
+
+```
+
+src/main/java/com/mdd/config/JdbcConfig.java
+
+```java
+package com.mdd.config;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import org.springframework.context.annotation.Bean;
+
+import javax.sql.DataSource;
+
+public class JdbcConfig {
+    @Bean
+    public DataSource dataSource(){
+        DruidDataSource ds = new DruidDataSource();
+        ds.setDriverClassName("com.mysql.cj.jdbc.Driver");
+        ds.setUrl("jdbc:mysql:///ssm");
+        ds.setUsername("root");
+        ds.setPassword("root");//记得看密码是不是一样的
+        return ds;
+    }
+}
+
+```
+
+src/main/java/com/mdd/config/MybatisConfig.java
+
+```java
+package com.mdd.config;
+
+import org.mybatis.spring.SqlSessionFactoryBean;
+import org.mybatis.spring.mapper.MapperScannerConfigurer;
+import org.springframework.context.annotation.Bean;
+
+import javax.sql.DataSource;
+
+public class MybatisConfig {
+
+    @Bean
+    public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource){
+
+        SqlSessionFactoryBean ssfb = new SqlSessionFactoryBean();
+        ssfb.setDataSource(dataSource);
+        ssfb.setTypeAliasesPackage("com.mdd.domain");
+        return ssfb;
+    }
+
+    @Bean
+    public MapperScannerConfigurer mapperScannerConfigurer(){
+        MapperScannerConfigurer msc = new MapperScannerConfigurer();
+        msc.setBasePackage("com.mdd.mapper");
+        return msc;
+    }
+
+}
+```
+
+src/main/java/com/mdd/domain/Book.java
+
+```java
+package com.mdd.domain;
+
+public class Book {
+
+    private Integer id;
+    private String bookName;
+    private String author;
+    private String publisher;
+
+    @Override
+    public String toString() {
+        return "Book{" +
+                "id=" + id +
+                ", bookName='" + bookName + '\'' +
+                ", author='" + author + '\'' +
+                ", publisher='" + publisher + '\'' +
+                '}';
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getBookName() {
+        return bookName;
+    }
+
+    public void setBookName(String bookName) {
+        this.bookName = bookName;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(String publisher) {
+        this.publisher = publisher;
+    }
+
+    public Book(Integer id, String bookName, String author, String publisher) {
+        this.id = id;
+        this.bookName = bookName;
+        this.author = author;
+        this.publisher = publisher;
+    }
+
+    public Book() {
+    }
+}
+
+```
+
+src/main/java/com/mdd/controller/R.java
+
+```java
+package com.mdd.controller;
+
+public class R {
+    private Integer code;
+    private String msg;
+    private Object data;
+
+    public R() {
+    }
+
+    public R(Integer code, Object data) {
+        this.code = code;
+        this.data = data;
+    }
+
+    public R(Integer code, String msg) {
+        this.code = code;
+        this.msg = msg;
+    }
+
+    public R(Integer code, String msg, Object data) {
+        this.code = code;
+        this.msg = msg;
+        this.data = data;
+    }
+
+    public Integer getCode() {
+        return code;
+    }
+
+    public void setCode(Integer code) {
+        this.code = code;
+    }
+
+    public String getMsg() {
+        return msg;
+    }
+
+    public void setMsg(String msg) {
+        this.msg = msg;
+    }
+
+    public Object getData() {
+        return data;
+    }
+
+    public void setData(Object data) {
+        this.data = data;
+    }
+
+    @Override
+    public String toString() {
+        return "R{" +
+                "code=" + code +
+                ", msg='" + msg + '\'' +
+                ", data=" + data +
+                '}';
+    }
+}
+
+```
+
+src/main/java/com/mdd/controller/Code.java
+
+```java
+package com.mdd.controller;
+
+public class Code {
+
+    public static final Integer GET_OK = 2000;
+    public static final Integer POST_OK = 3000;
+    public static final Integer PUT_OK = 4000;
+    public static final Integer DELETE_OK = 5000;
+
+    public static final Integer GET_ERR = 2001;
+    public static final Integer POST_ERR = 3001;
+    public static final Integer PUT_ERR = 4001;
+    public static final Integer DELETE_ERR = 5001;
+
+
+}
+```
+
+src/main/java/com/mdd/controller/BookController.java
+
+```java
+package com.mdd.controller;
+
+
+import com.mdd.domain.Book;
+import com.mdd.service.BookService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/books")
+public class BookController {
+    @Autowired
+    private BookService bookService;
+
+    //查询
+    @GetMapping
+    public List<Book> getBooks(){
+        List<Book> bookList = bookService.getBooks();
+        Integer code = bookList != null ? Code.GET_OK:Code.GET_ERR;
+        Object data = bookList != null ? bookList:"查询失败！";
+        return bookList;
+    }
+
+    //添加
+    @PostMapping
+    public R postBook(@RequestBody Book book){
+       Boolean flag = bookService.postBook(book);
+        if (flag) {
+            return new R(Code.POST_OK,"添加成功！");
+        }else {
+            return new R(Code.POST_ERR,"添加失败！");
+        }
+    }
+
+    //修改
+    @PutMapping
+    public R updateBook(@RequestBody Book book){
+      Boolean flag = bookService.updateBook(book);
+      Integer code = flag ? Code.PUT_OK:Code.PUT_ERR;
+      String data = flag ? "修改成功！":"修改失败！";
+      return new R(code,data);
+    }
+
+    //删除
+    @DeleteMapping("/{id}")
+    public R deleteBook(@PathVariable Integer id){
+        Boolean flag = bookService.DeleteBook(id);
+        Integer code = flag ? Code.DELETE_OK:Code.DELETE_ERR;
+        String data = flag ? "删除成功！":"删除失败";
+        return new R(code,data);
+    }
+
+    //按照id查询
+    @GetMapping("/{id}")
+    public R getId(@PathVariable Integer id){
+        Book book = bookService.getId(id);
+        Integer code = book != null ? Code.GET_OK:Code.GET_ERR;
+        Object data = book != null ? book:"根据id查询失败！";
+        return new R(code,data);
+
+    }
+
+}
+
+```
+
+src/main/java/com/mdd/service/BookService.java
+
+```java
+package com.mdd.service;
+
+import com.mdd.domain.Book;
+
+import java.util.List;
+
+public interface BookService {
+
+    List<Book> getBooks();
+
+    Boolean postBook(Book book);
+
+    Boolean updateBook(Book book);
+
+    Boolean DeleteBook(Integer id);
+
+    Book getId(Integer id);
+}
+```
+
+src/main/java/com/mdd/service/Impl/BookServiceImpl.java
+
+```java
+package com.mdd.service.Impl;
+
+import com.mdd.domain.Book;
+import com.mdd.mapper.BookMapper;
+import com.mdd.service.BookService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class BookServiceImpl implements BookService {
+    @Autowired
+    private BookMapper bookMapper;
+
+
+    public List<Book> getBooks() {
+        return bookMapper.getBooks();
+    }
+
+    public Boolean postBook(Book book) {
+        return bookMapper.postBook(book)>0;
+    }
+
+    public Boolean updateBook(Book book) {
+        return bookMapper.updateBook(book)>0;
+    }
+
+    public Boolean DeleteBook(Integer id) {
+        return bookMapper.deteleBook(id)>0;
+    }
+
+    public Book getId(Integer id) {
+        return bookMapper.getId(id);
+    }
+}
+```
+
+src/main/java/com/mdd/mapper/BookMapper.java
+
+```java
+package com.mdd.mapper;
+
+import com.mdd.domain.Book;
+import org.apache.ibatis.annotations.Delete;
+import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
+
+import java.util.List;
+
+public interface BookMapper {
+
+    @Select("select id, book_name bookName, author, publisher from tb_book")
+    List<Book> getBooks();
+
+    @Insert("insert into tb_book (book_name, author, publisher) VALUES (#{bookName}, #{author}, #{publisher})")
+    Integer postBook(Book book);
+
+    @Update("update tb_book set book_name = #{bookName},author = #{author},publisher = #{publisher} where id = #{id}")
+    Integer updateBook(Book book);
+
+    @Delete("delete from tb_book where id = #{id}")
+    Integer deteleBook(Integer id);
+
+    @Select("select id, book_name bookName, author, publisher from tb_book where id=#{id}")
+    Book getId(Integer id);
+}
+```
+
+别忘记在webapp李添加index.html文件
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