Java get the value Json string

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1. Obtain json simple string value corresponding to the key

It is provided to import a package json-lib-2.4.jar

code show as below:

import net.sf.json.JSONObject;

public class Test {
	public static void main(String[] args) {
		String jsonStr="{\"trans\":\"01\",\"fileId\":\"中心编号\",\"context\":\"文件流的base64字符串\"}";
		
		JSONObject json = JSONObject.fromObject(jsonStr);
		
		String trans=json.getString("trans");
		String fileId=json.getString("fileId");
		String context=json.getString("context");
		
		System.out.println("["+trans+"]["+fileId+"]["+context+"]");
	}

}

Renderings: