我们如何在Java中使用流API实现JSON数组？

JsonGenerator接口可用于以流式传输方式将 JSON 数据写入输出源。我们可以使用JsonGenerator的writeStartArray()方法创建或实现一个JSON数组，该方法在当前对象上下文中写入JSON名称/起始数组字符对。 writeStartObject() 方法写入 JSON 起始对象字符，仅在数组上下文中有效，writeEnd() 方法写入当前上下文的结尾。

语法

JsonGenerator writeStartArray(String name)

示例

import java.io.*;
import javax.json.*;
import javax.json.stream.*;
public class JsonGeneratorTest {
   public static void main(String[] args) throws Exception {
      StringWriter writer = new StringWriter();
      JsonGenerator jsonGen = Json.createGenerator(writer);
      jsonGen.writeStartObject()
             .write("name", "Adithya")
             .write("designation", "Python Developer")
             .write("company", "TutorialsPoint")
             .writeStartArray("personal details")
             .writeStartObject()
             .write("email", "adithya@gmail.com")
             .writeEnd()
             .writeStartObject()
             .write("contact", "9959927000")
             .writeEnd()  // end of object
             .writeEnd()  // end of an array
             .writeEnd(); // end of main object
      jsonGen.close();
      System.out.println(writer.toString());
   }
}

输出

{"name":"Adithya","designation":"Python Developer","company":"TutorialsPoint","personal details":[{"email":"adithya@gmail.com"},{"contact":"9959927000"}]}

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