后端技术栈之FastJson

框架介绍

@Data：作用于类上，是以下注解的集合：@ToString @EqualsAndHashCode @Getter @Setter @RequiredArgsConstructor

框架使用

在domin文件夹下新建Book.java类

@Data
public class Book {
    private String name;
    private String author;
    private Float price;
}

在controller文件夹下新建BookController.java类

@RestController
public class BookController {
    @GetMapping("/book")
    public Book book(){
        Book b1 = new Book();
        b1.setAuthor("罗贯中");
        b1.setName("三国演义");
        b1.setPrice(18.3f);
        return b1;
    }
}

在pom.xml文件夹中添加FastJson依赖

<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-web</artifactId>
     <exclusions>
          <exclusion>
               <groupId>com.fasterxml.jackson.core</groupId>
               <artifactId>jackson-core</artifactId>
          </exclusion>
     </exclusions>
</dependency>
<dependency>
     <groupId>com.alibaba</groupId>
     <artifactId>fastjson</artifactId>
</dependency>

新建mFastJsonConfig.java文件修改FastJson配置。

@Configuration
public class mFastJsonConfig {
    @Bean
    FastJsonHttpMessageConverter fastJsonHttpMessageConverter(){
        FastJsonHttpMessageConverter converter = new FastJsonHttpMessageConverter();
        FastJsonConfig config = new FastJsonConfig();
        config.setDateFormat("yyyy-MM-dd");
        config.setCharset(Charset.forName("UTF-8"));
        config.setSerializerFeatures(
                SerializerFeature.WriteClassName,
                SerializerFeature.WriteMapNullValue,
                SerializerFeature.PrettyFormat,
                SerializerFeature.WriteNullListAsEmpty,
                SerializerFeature.WriteNullStringAsEmpty
        );
        converter.setFastJsonConfig(config);
        return converter;
    }
}

在application.properties中添加如下配置：

## FastJson
server.servlet.encoding.force-response=true

运行项目，在浏览器中输入网址：
http://localhost:8080/book

运行显示：

{ "@type":"com.suromo.springdemo.domain.Book", "author":"罗贯中", "name":"三国演义", "price":18.3F }

成功获取json数据。