Json Simple 简明教程
JSON.simple - Customized Output Streaming
我们可以根据自定义类定制 JSON 流输出。唯一的需求是实现 JSONStreamAware 接口。
以下示例说明了上述概念。
Example
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.LinkedHashMap;
import java.util.Map;
import org.json.simple.JSONArray;
import org.json.simple.JSONStreamAware;
import org.json.simple.JSONValue;
class JsonDemo {
public static void main(String[] args) throws IOException {
JSONArray students = new JSONArray();
students.add(new Student(1,"Robert"));
students.add(new Student(2,"Julia"));
StringWriter out = new StringWriter();
students.writeJSONString(out);
System.out.println(out.toString());
}
}
class Student implements JSONStreamAware {
int rollNo;
String name;
Student(int rollNo, String name){
this.rollNo = rollNo;
this.name = name;
}
@Override
public void writeJSONString(Writer out) throws IOException {
Map obj = new LinkedHashMap();
obj.put("name", name);
obj.put("rollNo", new Integer(rollNo));
JSONValue.writeJSONString(obj, out);
}
}