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  • springboot使用fastJson作为json解析框架

    springboot使用fastJson作为json解析框架

    springboot默认自带json解析框架,默认使用jackson,如果使用fastjson,可以按照下列方式配置使用

    〇、搭建springbboot基础环境

    一、添加依赖

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

    二、在app.class(启动类)中的配置

    配置方式一(通过继承的方式)
    1、启动类继承WebMvcConfigurerAdapter
    2、重写configureMessageConverters方法

    	@Override
    	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
    		super.configureMessageConverters(converters);
    		/*
    		 * 1、需要先定义一个convert转换消息的对象
    		 * 2、添加fastJson的配置信息,比如:是否要格式化返回json数据
    		 * 3、在convert中添加配置信息
    		 * 4、将convert添加到converters当中
    		 * 
    		 */
    		//1、需要先定义一个·convert转换消息的对象;
    		FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
    		//2、添加fastjson的配置信息,比如 是否要格式化返回json数据
    		FastJsonConfig fastJsonConfig = new FastJsonConfig();
    		fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
    		//3、在convert中添加配置信息.
    		fastConverter.setFastJsonConfig(fastJsonConfig);
    		//4、将convert添加到converters当中.
    		converters.add(fastConverter);
    	}  
    

    配置方式二(通过@Bean注入的方式)

    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
    	// 1、需要先定义一个 convert 转换消息的对象;
    	FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();		
    	//2、添加fastJson 的配置信息,比如:是否要格式化返回的json数据;
    	FastJsonConfig fastJsonConfig = new FastJsonConfig();
    	fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);		
    	//3、在convert中添加配置信息.
    	fastConverter.setFastJsonConfig(fastJsonConfig);
    	HttpMessageConverter<?> converter = fastConverter;
    	return new HttpMessageConverters(converter);
    }
    

    二、以第一种配置方式,测试验证一下:

    准备一个Controller

    import java.util.Date;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    import com.xujie.pojo.Demo;
    
    @RestController // 包括了@ResponseBody和Controller
    public class UserController {
    	
    	@GetMapping("/test")
    	public Demo test() {
    		Demo demo = new Demo();
    		demo.setId(1);
    		demo.setCreateTime(new Date());
    		demo.setName("demo22");
    		demo.setRemarks("这里是备注信息,不应该返回");
    		return demo;
    	}
    }
    

    启动类写法

    import java.util.List;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    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;
    
    @SpringBootApplication
    public class UserApplication extends WebMvcConfigurerAdapter {
    	public static void main(String[] args) {
    		SpringApplication.run(UserApplication.class, args);
    	}
    	
    	@Override
    	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
    		//1、需要先定义一个·convert转换消息的对象;
    		FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
    		//2、添加fastjson的配置信息,比如 是否要格式化返回json数据
    		FastJsonConfig fastJsonConfig = new FastJsonConfig();
    		fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
    		//3、在convert中添加配置信息.
    		fastConverter.setFastJsonConfig(fastJsonConfig);
    		//4、将convert添加到converters当中.
    		converters.add(fastConverter);
    	}
    }
    

    pojo类

    import java.util.Date;
    import com.alibaba.fastjson.annotation.JSONField;
    
    public class Demo {
    	private int id;
    	private String name;
    	
    	//com.alibaba.fastjson.annotation.JSONField
    	@JSONField(format="yyyy-MM-dd HH:mm")
    	private Date createTime;//创建时间.
    	
    	/*
    	 * serialize:是否需要序列化属性.
    	 */
    	@JSONField(serialize=false)
    	private String remarks;//备注信息.
    	
    	
    	public String getRemarks() {
    		return remarks;
    	}
    	public void setRemarks(String remarks) {
    		this.remarks = remarks;
    	}
    	public Date getCreateTime() {
    		return createTime;
    	}
    	public void setCreateTime(Date createTime) {
    		this.createTime = createTime;
    	}
    	public int getId() {
    		return id;
    	}
    	public void setId(int id) {
    		this.id = id;
    	}
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = name;
    	}
    	
    }
    

    浏览器测试

    输入地址:http://localhost:8080/test

    返回:
    { "createTime":"2018-02-23 12:06", "id":1, "name":"demo22" }

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  • 原文地址:https://www.cnblogs.com/xujie09/p/8461483.html
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