@RestController public class BookController { @PostMapping("/add") public String save(@RequestParam("name") String name, @RequestParam("author") String author){ System.out.println("书名:" + name + ", 作者: " + author); return "书名:" + name + ", 作者: " + author; } }
时间: 2024-04-08 12:31:04 浏览: 12
您好!根据您的代码,您正在创建一个名为`BookController`的RestController类,并在其中定义了一个名为`save`的方法。该方法使用`@PostMapping`注解将请求映射到`/add`路径上。
该方法接受两个通过`@RequestParam`注解标记的请求参数,分别是`name`和`author`。在方法中,它将这两个参数打印到控制台,并返回一个包含书名和作者的字符串。
当收到POST请求时,例如:
```
POST /add?name=Java Programming&author=John Doe
```
方法将打印以下内容:
```
书名:Java Programming, 作者: John Doe
```
并返回以下字符串:
```
书名:Java Programming, 作者: John Doe
```
这样,您就可以通过发送POST请求,并传递`name`和`author`参数来调用该方法。
如果您有任何其他问题,请随时提问!
相关问题
spingboot 整合es7.6 增删改查demo
以下是一个使用 Spring Boot 整合 Elasticsearch 7.6 的增删改查的 demo:
1. 添加依赖
在 pom.xml 中添加以下依赖:
```xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
```
2. 配置 Elasticsearch
在 application.properties 中添加 Elasticsearch 的配置:
```properties
spring.data.elasticsearch.cluster-nodes=localhost:9200
spring.data.elasticsearch.cluster-name=elasticsearch
```
3. 创建实体类
创建一个实体类,用于表示 Elasticsearch 中的文档:
```java
@Data
@NoArgsConstructor
@AllArgsConstructor
@Document(indexName = "book", type = "_doc", shards = 1, replicas = 0)
public class Book {
@Id
private String id;
private String name;
private String author;
private String description;
private Date publishDate;
}
```
其中,@Document 注解用于指定索引的名称和类型,@Id 注解用于指定文档的 ID。
4. 创建 Elasticsearch 操作接口
创建一个继承 ElasticsearchRepository 的接口,用于操作 Elasticsearch:
```java
public interface BookRepository extends ElasticsearchRepository<Book, String> {
}
```
5. 编写业务逻辑
编写增删改查的业务逻辑:
```java
@Service
public class BookService {
@Autowired
private BookRepository bookRepository;
public void save(Book book) {
bookRepository.save(book);
}
public void delete(String id) {
bookRepository.deleteById(id);
}
public void update(Book book) {
bookRepository.save(book);
}
public Book getById(String id) {
Optional<Book> optional = bookRepository.findById(id);
return optional.orElse(null);
}
public List<Book> search(String keyword) {
QueryBuilder queryBuilder = QueryBuilders.multiMatchQuery(keyword, "name", "author", "description");
Iterable<Book> iterable = bookRepository.search(queryBuilder);
List<Book> books = new ArrayList<>();
iterable.forEach(books::add);
return books;
}
}
```
6. 测试接口
编写测试接口:
```java
@RestController
public class BookController {
@Autowired
private BookService bookService;
@PostMapping("/book")
public void save(@RequestBody Book book) {
bookService.save(book);
}
@DeleteMapping("/book/{id}")
public void delete(@PathVariable String id) {
bookService.delete(id);
}
@PutMapping("/book")
public void update(@RequestBody Book book) {
bookService.update(book);
}
@GetMapping("/book/{id}")
public Book getById(@PathVariable String id) {
return bookService.getById(id);
}
@GetMapping("/book/search")
public List<Book> search(@RequestParam String keyword) {
return bookService.search(keyword);
}
}
```
7. 启动应用
启动应用后,可以使用 Postman 或其他工具测试接口。例如,使用以下请求保存一本书:
```
POST http://localhost:8080/book
{
"name": "Java 8 in Action",
"author": "Raoul-Gabriel Urma",
"description": "Lambdas, Streams, and functional-style programming",
"publishDate": "2014-08-28"
}
```
请基于ssh框架连接数据库实现图书信息管理系统,给出实现代码的框架
好的,下面是基于SSH框架连接数据库实现图书信息管理系统的代码框架,仅供参考。
1. 数据库连接配置文件 applicationContext.xml
```xml
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/bookstore" />
<property name="username" value="root" />
<property name="password" value="123456" />
</bean>
```
2. 图书信息实体类 Book.java
```java
public class Book {
private Integer id;
private String name;
private String author;
private String press;
private Date publishDate;
// getter/setter 略
}
```
3. DAO接口 BookDao.java
```java
public interface BookDao {
void save(Book book);
void update(Book book);
void delete(Integer id);
Book findById(Integer id);
List<Book> findAll();
}
```
4. DAO实现类 BookDaoImpl.java
```java
public class BookDaoImpl extends HibernateDaoSupport implements BookDao {
@Override
public void save(Book book) {
getHibernateTemplate().save(book);
}
@Override
public void update(Book book) {
getHibernateTemplate().update(book);
}
@Override
public void delete(Integer id) {
getHibernateTemplate().delete(findById(id));
}
@Override
public Book findById(Integer id) {
return getHibernateTemplate().get(Book.class, id);
}
@Override
public List<Book> findAll() {
return (List<Book>) getHibernateTemplate().find("from Book");
}
}
```
5. Service层 BookService.java
```java
public interface BookService {
void add(Book book);
void update(Book book);
void delete(Integer id);
Book findById(Integer id);
List<Book> findAll();
}
```
6. Service实现类 BookServiceImpl.java
```java
public class BookServiceImpl implements BookService {
private BookDao bookDao;
public void setBookDao(BookDao bookDao) {
this.bookDao = bookDao;
}
@Override
public void add(Book book) {
bookDao.save(book);
}
@Override
public void update(Book book) {
bookDao.update(book);
}
@Override
public void delete(Integer id) {
bookDao.delete(id);
}
@Override
public Book findById(Integer id) {
return bookDao.findById(id);
}
@Override
public List<Book> findAll() {
return bookDao.findAll();
}
}
```
7. 控制器 BookController.java
```java
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
private BookService bookService;
@RequestMapping("/list")
public String list(Model model) {
List<Book> bookList = bookService.findAll();
model.addAttribute("bookList", bookList);
return "book/list";
}
@RequestMapping("/add")
public String add(Book book) {
bookService.add(book);
return "redirect:/book/list";
}
@RequestMapping("/delete/{id}")
public String delete(@PathVariable Integer id) {
bookService.delete(id);
return "redirect:/book/list";
}
@RequestMapping("/edit/{id}")
public String edit(@PathVariable Integer id, Model model) {
Book book = bookService.findById(id);
model.addAttribute("book", book);
return "book/edit";
}
@RequestMapping("/update")
public String update(Book book) {
bookService.update(book);
return "redirect:/book/list";
}
}
```
以上是基于SSH框架连接数据库实现图书信息管理系统的代码框架,具体实现过程中还需要进行一些改进和完善。