FastJson测试用例

基础测试

package com.ai;
import com.ai.test.daily.Student;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.junit.Before;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;

//@SpringBootTest(classes = com.ai.main.Application.class)
//@RunWith(SpringRunner.class)
public class Application {

    private  Student student=new Student();
    private  Student student1=new Student();
    @Before
    public void before(){
        student.setAge(18);
        student.setBirthday(new Date());
        student.setEmail("333333.qq.com");
        student.setId(1);
        student.setName("李强");

        student1.setAge(180);
        student1.setBirthday(new Date());
        student1.setEmail("333333.qq.com");
        student1.setId(2);
        student1.setName("张三");
    }
    @Test //bean->json
    public void beanToJson() {
        String jsonString = JSON.toJSONString(student);
        System.out.println("");
        System.out.println("+++++++++++++++++++++++++++++++++bean->json+++++++++++++++++++++++++++++++++");
        System.out.println(jsonString);
    }

    @Test //json->  bean
    public void jsonToBean() {

        String jsonString = "{\"age\":18,\"birthday\":1636371553598,\"email\":\"333333.qq.com\",\"id\":1,\"name\":\"李强\"}";

        Student student = JSON.parseObject(jsonString, Student.class);
        System.out.println("");
        System.out.println("+++++++++++++++++++++++++++++++++json->  bean+++++++++++++++++++++++++++++++++");
        System.out.println(student.toString());
    }

    @Test //list->  json
    public void listToJson() {
        ArrayList<Student> list = new ArrayList<>();
        list.add(student);
        list.add(student1);
        String jsonString = JSON.toJSONString(list);
        System.out.println("");
        System.out.println("+++++++++++++++++++++++++++++++++list->  json+++++++++++++++++++++++++++++++++");
        System.out.println(jsonString);
    }

    @Test //json->  list
    public void jsonToList() {
        String jsonString = "[{\"age\":18,\"birthday\":1636372096907,\"email\":\"333333.qq.com\",\"id\":1,\"name\":\"李强\"},{\"age\":180,\"birthday\":1636372096907,\"email\":\"333333.qq.com\",\"id\":2,\"name\":\"张三\"}]";
        List<Student> students = JSON.parseArray(jsonString, Student.class);
        System.out.println("");
        System.out.println("+++++++++++++++++++++++++++++++++json->  list+++++++++++++++++++++++++++++++++");
        System.out.println(students.toString());
    }

    @Test //map->  json
    public void mapToJson() {
        HashMap<String, Student> map = new HashMap<>();
        map.put("student",student);
        map.put("student1",student1);
        String jsonString = JSON.toJSONString(map);
        System.out.println("");
        System.out.println("+++++++++++++++++++++++++++++++++map->  json+++++++++++++++++++++++++++++++++");
        System.out.println(jsonString);
    }

    @Test //json->  map
    public void jsonToMap() {
        String jsonString = "{\"student\":{\"age\":18,\"birthday\":1636372534788,\"email\":\"333333.qq.com\",\"id\":1,\"name\":\"李强\"},\"student1\":{\"age\":180,\"birthday\":1636372534788,\"email\":\"333333.qq.com\",\"id\":2,\"name\":\"张三\"}}";
        HashMap<String, Student> map = JSON.parseObject(jsonString, new TypeReference<HashMap<String, Student>>(){});
        System.out.println("");
        System.out.println("+++++++++++++++++++++++++++++++++json->  map+++++++++++++++++++++++++++++++++");
        System.out.println(map.toString());
    }
    @Test
    //SerializerFeature 枚举类： 进行序列化时，特殊化定制
//    QuoteFieldNames	输出key时是否使用双引号,默认为true
//    UseSingleQuotes	使用单引号而不是双引号,默认为false
//    WriteMapNullValue	是否输出值为null的字段,默认为false
//    WriteEnumUsingToString	Enum输出name()或者original,默认为false
//    UseISO8601DateFormat	Date使用ISO8601格式输出，默认为false
//    WriteNullListAsEmpty	List字段如果为null,输出为[],而非null
//    WriteNullStringAsEmpty	字符类型字段如果为null,输出为”“,而非null
//    WriteNullNumberAsZero	数值字段如果为null,输出为0,而非null
//    WriteNullBooleanAsFalse	Boolean字段如果为null,输出为false,而非null
//    SkipTransientField	如果是true，类中的Get方法对应的Field是transient，序列化时将会被忽略。默认为true
//    SortField	按字段名称排序后输出。默认为false
//    WriteTabAsSpecial	把\t做转义输出，默认为false	不推荐
//    PrettyFormat	结果是否格式化,默认为false
//    WriteClassName	序列化时写入类型信息，默认为false。反序列化是需用到
//    DisableCircularReferenceDetect	消除对同一对象循环引用的问题，默认为false
//    WriteSlashAsSpecial	对斜杠’/’进行转义
//    WriteDateUseDateFormat	全局修改日期格式,默认为false。JSON.DEFFAULT_DATE_FORMAT = “yyyy-MM-dd”;JSON.toJSONString(obj, SerializerFeature.WriteDateUseDateFormat);
//    DisableCheckSpecialChar	一个对象的字符串属性中如果有特殊字符如双引号，将会在转成json时带有反斜杠转移符。如果不需要转义，可以使用这个属性。默认为false
//    BeanToArray	将对象转为array输出
    public void SerializerFeature(){
        String jsonStringSerializerFeature = JSON.toJSONString(student
                , SerializerFeature.WriteDateUseDateFormat  //    WriteDateUseDateFormat	全局修改日期格式,默认为false。JSON.DEFFAULT_DATE_FORMAT = “yyyy-MM-dd”;JSON.toJSONString(obj, SerializerFeature.WriteDateUseDateFormat);
                , SerializerFeature.WriteNullStringAsEmpty  //    WriteNullNumberAsZero	数值字段如果为null,输出为0,而非null
                , SerializerFeature.PrettyFormat //    UseSingleQuotes	使用单引号而不是双引号,默认为false

        );
        String jsonString = JSON.toJSONString(student);

        //对比
        System.out.println("");
        System.out.println("+++++++++++++++++++++++++++++++++SerializerFeature++++++++++++++++++++++++++++++++");
        System.out.println("jsonStringSerializerFeature"+jsonStringSerializerFeature);
        System.out.println("jsonString+++"+jsonString);
    }
}

SpringMVC

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.web.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;

import java.nio.charset.Charset;

@Configuration
public class HttpMessageConverterConfig {

    //引入Fastjson解析json，不使用默认的jackson
    //必须在pom.xml引入fastjson的jar包，并且版必须大于1.2.10
    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
        //1、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
        FastJsonConfig fastJsonConfig = new FastJsonConfig();

        SerializerFeature[] serializerFeatures = new SerializerFeature[]{
                //    输出key是包含双引号
//                SerializerFeature.QuoteFieldNames,
                //    是否输出为null的字段,若为null 则显示该字段
//                SerializerFeature.WriteMapNullValue,
                //    数值字段如果为null，则输出为0
                SerializerFeature.WriteNullNumberAsZero,
                //     List字段如果为null,输出为[],而非null
                SerializerFeature.WriteNullListAsEmpty,
                //    字符类型字段如果为null,输出为"",而非null
                SerializerFeature.WriteNullStringAsEmpty,
                //    Boolean字段如果为null,输出为false,而非null
                SerializerFeature.WriteNullBooleanAsFalse,
                //    Date的日期转换器
                SerializerFeature.WriteDateUseDateFormat,
                //    循环引用
                SerializerFeature.DisableCircularReferenceDetect,
        };

        fastJsonConfig.setSerializerFeatures(serializerFeatures);
        fastJsonConfig.setCharset(Charset.forName("UTF-8"));

        //3、在convert中添加配置信息
        fastConverter.setFastJsonConfig(fastJsonConfig);

        //4、将convert添加到converters中
        HttpMessageConverter<?> converter = fastConverter;

        return new HttpMessageConverters(converter);
    }
}