Spring Boot 入门、Spring Boot 配置、Web 开发、模板引擎、数据存储、数据缓存 案例更新

chapter-4-spring-boot-web-thymeleaf/src/main/java/demo/springboot/WebApplication.java

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+package demo.springboot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Spring Boot 应用启动类
+ *
+ * Created by bysocket on 30/09/2017.
+ */
+@SpringBootApplication
+public class WebApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(WebApplication.class, args);
+    }
+}

chapter-4-spring-boot-web-thymeleaf/src/main/java/demo/springboot/domain/Book.java

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+package demo.springboot.domain;
+
+import java.io.Serializable;
+
+/**
+ * Book 实体类
+ *
+ * Created by bysocket on 30/09/2017.
+ */
+public class Book implements Serializable {
+
+    /**
+     * 编号
+     */
+    private Long id;
+
+    /**
+     * 书名
+     */
+    private String name;
+
+    /**
+     * 作者
+     */
+    private String writer;
+
+    /**
+     * 简介
+     */
+    private String introduction;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getWriter() {
+        return writer;
+    }
+
+    public void setWriter(String writer) {
+        this.writer = writer;
+    }
+
+    public String getIntroduction() {
+        return introduction;
+    }
+
+    public void setIntroduction(String introduction) {
+        this.introduction = introduction;
+    }
+}

chapter-4-spring-boot-web-thymeleaf/src/main/java/demo/springboot/service/BookService.java

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+package demo.springboot.service;
+
+import demo.springboot.domain.Book;
+
+import java.util.List;
+
+/**
+ * Book 业务接口层
+ *
+ * Created by bysocket on 30/09/2017.
+ */
+public interface BookService {
+    /**
+     * 获取所有 Book
+     */
+    List<Book> findAll();
+
+    /**
+     * 新增 Book
+     *
+     * @param book {@link Book}
+     */
+    Book insertByBook(Book book);
+
+    /**
+     * 更新 Book
+     *
+     * @param book {@link Book}
+     */
+    Book update(Book book);
+
+    /**
+     * 删除 Book
+     *
+     * @param id 编号
+     */
+    Book delete(Long id);
+
+    /**
+     * 获取 Book
+     *
+     * @param id 编号
+     */
+    Book findById(Long id);
+}

chapter-4-spring-boot-web-thymeleaf/src/main/java/demo/springboot/service/impl/BookServiceImpl.java

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+package demo.springboot.service.impl;
+
+import demo.springboot.domain.Book;
+import demo.springboot.service.BookService;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Book 业务层实现
+ *
+ * Created by bysocket on 30/09/2017.
+ */
+@Service
+public class BookServiceImpl implements BookService {
+
+    // 模拟数据库，存储 Book 信息
+    // 第五章《数据存储》会替换成 H2 数据源存储
+    private static Map<Long, Book> BOOK_DB = new HashMap<>();
+
+    @Override
+    public List<Book> findAll() {
+        return new ArrayList<>(BOOK_DB.values());
+    }
+
+    @Override
+    public Book insertByBook(Book book) {
+        book.setId(BOOK_DB.size() + 1L);
+        BOOK_DB.put(book.getId(), book);
+        return book;
+    }
+
+    @Override
+    public Book update(Book book) {
+        BOOK_DB.put(book.getId(), book);
+        return book;
+    }
+
+    @Override
+    public Book delete(Long id) {
+        return BOOK_DB.remove(id);
+    }
+
+    @Override
+    public Book findById(Long id) {
+        return BOOK_DB.get(id);
+    }
+}

chapter-4-spring-boot-web-thymeleaf/src/main/java/demo/springboot/web/BookController.java

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+package demo.springboot.web;
+
+import demo.springboot.domain.Book;
+import demo.springboot.service.BookService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.ModelMap;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * Book 控制层
+ *
+ * Created by bysocket on 30/09/2017.
+ */
+@Controller
+@RequestMapping(value = "/book")
+public class BookController {
+
+    private static final String BOOK_FORM_PATH_NAME = "bookForm";
+    private static final String BOOK_LIST_PATH_NAME = "bookList";
+    private static final String REDIRECT_TO_BOOK_URL = "redirect:/book";
+
+    @Autowired
+    BookService bookService;
+
+    /**
+     * 获取 Book 列表
+     * 处理 "/book" 的 GET 请求，用来获取 Book 列表
+     */
+    @RequestMapping(method = RequestMethod.GET)
+    public String getBookList(ModelMap map) {
+        map.addAttribute("bookList",bookService.findAll());
+        return BOOK_LIST_PATH_NAME;
+    }
+
+    /**
+     * 获取创建 Book 表单
+     */
+    @RequestMapping(value = "/create", method = RequestMethod.GET)
+    public String createBookForm(ModelMap map) {
+        map.addAttribute("book", new Book());
+        map.addAttribute("action", "create");
+        return BOOK_FORM_PATH_NAME;
+    }
+
+    /**
+     * 创建 Book
+     * 处理 "/book/create" 的 POST 请求，用来新建 Book 信息
+     * 通过 @ModelAttribute 绑定表单实体参数，也通过 @RequestParam 传递参数
+     */
+    @RequestMapping(value = "/create", method = RequestMethod.POST)
+    public String postBook(@ModelAttribute Book book) {
+        bookService.insertByBook(book);
+        return REDIRECT_TO_BOOK_URL;
+    }
+
+    /**
+     * 获取更新 Book 表单
+     *    处理 "/book/update/{id}" 的 GET 请求，通过 URL 中的 id 值获取 Book 信息
+     *    URL 中的 id ，通过 @PathVariable 绑定参数
+     */
+    @RequestMapping(value = "/update/{id}", method = RequestMethod.GET)
+    public String getUser(@PathVariable Long id, ModelMap map) {
+        map.addAttribute("book", bookService.findById(id));
+        map.addAttribute("action", "update");
+        return BOOK_FORM_PATH_NAME;
+    }
+
+    /**
+     * 更新 Book
+     * 处理 "/update" 的 PUT 请求，用来更新 Book 信息
+     */
+    @RequestMapping(value = "/update", method = RequestMethod.POST)
+    public String putBook(@ModelAttribute Book book) {
+        bookService.update(book);
+        return REDIRECT_TO_BOOK_URL;
+    }
+
+    /**
+     * 删除 Book
+     * 处理 "/book/{id}" 的 GET 请求，用来删除 Book 信息
+     */
+    @RequestMapping(value = "/delete/{id}", method = RequestMethod.GET)
+    public String deleteBook(@PathVariable Long id) {
+        bookService.delete(id);
+        return REDIRECT_TO_BOOK_URL;
+    }
+
+}