Java 之XML与JSON(JSON的简单使用)

最新推荐文章于 2023-05-29 14:41:20 发布

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博客主要围绕创建JSON展开，涉及Name类，并包含相关测试用例，聚焦于信息技术中JSON创建及测试方面的内容。

创建JSON

package com.vince.json;

import com.google.gson.stream.JsonReader;
import org.junit.Test;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;

/**
 * []是数组开始解析用 ***.beginArray();
 * {}是对象开始解析用 ***.beginObject();
 */

public class JSONDemo {

        @Test
    public void parseJSONNames(){
        InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream("com/vince/json/names.json");
        InputStreamReader in=new InputStreamReader(is);
        //JSON的解析工具(解析器)
        JsonReader reader=new JsonReader(in);
        ArrayList<Name> list=new ArrayList<>();
        try {
            //开始解析JSON数组
            reader.beginArray();
            while (reader.hasNext()){
                list.add(parseName((reader)));
            }
            //结束解析数组
            reader.endArray();
        } catch (IOException e) {
            e.printStackTrace();
        }
            System.out.println(Arrays.toString(list.toArray()));
    }
//解析对象 Name
    private Name parseName(JsonReader jsonReader){
        Name name=null;
        try {
            //开始解析对象
            jsonReader.beginObject();
            name=new Name();
            while (jsonReader.hasNext()){
                String attrName = jsonReader.nextName();
                if("firstName".equals(attrName)){
                    name.setFirstName(jsonReader.nextString());//jsonReader.nextString()取值的方法，这里是字符串
                }else if("lastName".equals(attrName)){
                    name.setLastName(jsonReader.nextString());
                }else if("email".equals(attrName)){
                    name.setEmail(jsonReader.nextString());
                }
            }
            //结束解析对象
            jsonReader.endObject();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return name;
    }
}

Name类

package com.vince.json;

public class Name {
    private String firstName;
    private String lastName;
    private String email;

    public Name(String firstName, String lastName, String email) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.email = email;
    }

    public Name() {
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    @Override
    public String toString() {
        return "Name{" +
                "firstName='" + firstName + '\'' +
                ", lastName='" + lastName + '\'' +
                ", email='" + email + '\'' +
                '}';
    }
}

测试用例

[
    {"firstName":"Vince","lastName":"Ma","email":"987456159@qq.com"},
    {"firstName":"Similar","lastName":"Lin","email":"88886666@qq.com"}
]