Java Gson 源码分析:JsonReader


#Java Gson


如何使用 JsonReader

代码示例:

package org.example;

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

import java.io.IOException;
import java.io.StringReader;
import java.util.Objects;

public class TestJsonReader {

    @Test
    public void test() throws IOException {
        String jsonData = "{\"age\":18, \"height\":180}";
        StringReader stringReader = new StringReader(jsonData);
        JsonReader jsonReader = new JsonReader(stringReader);

        jsonReader.beginObject();
        while (jsonReader.hasNext()) {
            String name = jsonReader.nextName();
            System.out.println("获取到 name 为: " + name);
            if (Objects.equals(name, "age")) {
                int age = jsonReader.nextInt();
                System.out.println("获取到 int 值: " + age);
            } else {
                System.out.println("跳过");
                jsonReader.skipValue();
            }
        }
        jsonReader.endObject();
        jsonReader.close();
    }
}

执行结果:

获取到 name 为: age
获取到 int 值: 18
获取到 name 为: height
跳过


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