请设计一个简单的Java服务，包括RESTful API和客户端调用

原创忘是亡心i 2025-03-11 13:00 93阅读 0赞

服务名称：SimpleBookService

1. **定义服务类**（Server.java）

```java
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;

@Path("/books")
public class SimpleBookService {

@GET
    @Produces("application/json") // Produce JSON content
    public BookList getBooks() {
        // Simulate book data retrieval from a database or external API
        BookList bookList = new BookList();
        bookList.add(new Book("Book1", "Author1")));
        bookList.add(new Book("Book2", "Author2")));

return bookList;
    }
}
```

2. **定义客户端类**（Client.java）

```java
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.core.Response;

public class SimpleBookClient {

private static final String BASE_URL = "http://localhost:8080/books/";

public static void main(String[] args) {
        // Create a client instance using ClientBuilder
        Client client = ClientBuilder.newClient();

// Call the RESTful API to get book list
        Response response = client.target(BASE_URL).request().get();
        if (response.getStatus() == 200) {
            System.out.println("Book List:");
            SimpleBookService.BookList bookList = response.readEntity(SimpleBookService.BookList.class));
            for (Book book : bookList.getBooks()) {
                System.out.println("- " + book.getName() + " by " + book.getAuthor()));
            }
        } else {
            System.out.println("Failed to get book list. Response status: " + response.getStatus());
        }

// Close the client
        client.close();
    }
}
```

3. **启动服务和客户端**（可选）

在命令行或IDE中执行以下操作：

- 启动Java服务器：`java -jar server.jar`（假设server.jar是你的服务打包文件）
- 启动客户端代码：`java -jar client.jar`（假设client.jar是你的客户端打包文件）

这样，你就可以通过HTTP请求调用SimpleBookService的RESTful API了。