SpringBoot中使用FastJson解析Json数据

清疚 2023-10-18 16:27 111阅读 0赞

## 场景 ##

1.SpringBoot默认配置的是Jackson。

2.项目搭建专栏：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/column/info/35688][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_column_info_35688]

## 实现 ##

引入fastJson的依赖

<dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>fastjson</artifactId>
       <version>1.2.15</version>
      </dependency>

### 实现方式1 ###

通过继承WebMvcConfigurerAdapter来实现

找到springBoot的启动类

package com.example.demo;
    
    import java.util.List;
    
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
    import org.springframework.context.annotation.Bean;
    import org.springframework.http.converter.HttpMessageConverter;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.alibaba.fastjson.support.config.FastJsonConfig;
    import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
    @MapperScan("com.example.demo.mapper")
    @SpringBootApplication(scanBasePackages= {"com.example.demo.controller","com.example.demo.service"})
    public class HelloSpringBootApplication extends WebMvcConfigurerAdapter{
    
    
    
     @Override
     public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
      
      //创建FastJson的消息转换器
      FastJsonHttpMessageConverter convert = new FastJsonHttpMessageConverter();
      //创建FastJson的配置对象
      FastJsonConfig config = new FastJsonConfig();
      //对Json数据进行格式化
      config.setSerializerFeatures(SerializerFeature.PrettyFormat);
      convert.setFastJsonConfig(config);
      converters.add(convert);
     }
     
     
     
     public static void main(String[] args) {
      
      SpringApplication.run(HelloSpringBootApplication.class, args);
     }
    
    }

通过extends WebMvcConfigurerAdapter并重写configureMessageConverters方法来实现。

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

新建Controller

package com.example.demo.controller;
    
    import java.util.Date;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    import com.example.demo.pojo.User;
    
    @Controller
    public class TestFastjsonController {
     @ResponseBody
     @RequestMapping("/testFastJson")
     public Object show() {
      
      User user =new User();
      user.setId(1);
      user.setUsername("霸道");
      user.setPassword("流氓气质");
      user.setDate(new Date());
      
      return user;
     }
    }

新建pojo

user.java
    
    package com.example.demo.pojo;
    
    import java.util.Date;
    
    import com.alibaba.fastjson.annotation.JSONField;
    
    public class User {
     private Integer id;
     private String username;
     private String password;
     @JSONField(format="yyyy-MM-dd")
     private Date date;
     public Integer getId() {
      return id;
     }
     public Date getDate() {
      return date;
     }
     public void setDate(Date date) {
      this.date = date;
     }
     public void setId(Integer id) {
      this.id = id;
     }
     public String getUsername() {
      return username;
     }
     public void setUsername(String username) {
      this.username = username;
     }
     public String getPassword() {
      return password;
     }
     public void setPassword(String password) {
      this.password = password;
     }
    
    }

运行看效果

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

### 实现方式2 ###

在项目启动类中

package com.example.demo;
    
    import java.util.List;
    
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
    import org.springframework.context.annotation.Bean;
    import org.springframework.http.converter.HttpMessageConverter;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.alibaba.fastjson.support.config.FastJsonConfig;
    import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
    @MapperScan("com.example.demo.mapper")
    @SpringBootApplication(scanBasePackages= {"com.example.demo.controller","com.example.demo.service"})
    public class HelloSpringBootApplication
    {
    
    
    
     
     @Bean
     public HttpMessageConverters fastJsonMessageConverter() {
      
        //创建FastJson的消息转换器
        FastJsonHttpMessageConverter convert = new FastJsonHttpMessageConverter();
        //创建FastJson的配置对象
        FastJsonConfig config = new FastJsonConfig();
        //对Json数据进行格式化
        config.setSerializerFeatures(SerializerFeature.PrettyFormat);
        convert.setFastJsonConfig(config);
        HttpMessageConverter<?> con =convert;
        return new HttpMessageConverters(con);
     }
     
     public static void main(String[] args) {
      
      SpringApplication.run(HelloSpringBootApplication.class, args);
     }
    
    }

同样运行效果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

### 源码下载 ###

[https://download.csdn.net/download/badao\_liumang\_qizhi/11074485][https_download.csdn.net_download_badao_liumang_qizhi_11074485]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_column_info_35688]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/column/info/35688
[Image 1]: 
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190330155230911.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190330155251509.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20190330155317536.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_download.csdn.net_download_badao_liumang_qizhi_11074485]: https://download.csdn.net/download/badao_liumang_qizhi/11074485