MyFastJson 个人笔记

转换用的实体 RiskSettings

public class RiskSettings  implements Serializable{
	/**
	 * 标识code 
	 */
	private String code;
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
}

Object < ---- >String

import java.util.List;
import java.util.Map;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.TypeReference;
import com.shopuu.server.finance.risk.models.RiskSettings;


		// Object  -->String
		RiskSettings javaObject=new RiskSettings();
		javaObject.setCode("3223");
	
		String string = JSONObject.toJSON(javaObject).toString();
		System.out.println(string);//{"code":"3223"}
		
		// String  -->Object
		RiskSettings parseObject = JSON.parseObject(string, RiskSettings.class);
		String code = parseObject.getCode();
		System.out.println(code);//3223

//String < ---- >JsonObject < ---- >Object

		//String -->JsonObject -->Object
		JSONObject jo = JSONObject.parseObject(string);
		RiskSettings rs = JSONObject.toJavaObject(jo,  RiskSettings.class);
		System.out.println(rs.getCode());//3223
		
		RiskSettings rs2 = JSON.toJavaObject(jo, RiskSettings.class);
		System.out.println(rs2.getCode());//3223

		//Object -->String --> JsonObject 
		String jsonString = JSON.toJSONString(rs);
		JSONObject jo1 = JSONObject.parseObject(string);

//	String 串封装成对象类型的json    {"code":"3223"}
		JSONObject jo = JSONObject.parseObject(string);
		JSONObject content = new JSONObject();
		content.put("riskSettings", jo);
		System.out.println(content.toString());//{"riskSettings":{"code":"3223"}}

String < ---- >Map < ---- > Object

	public <T> void strTmap(String string){
	
		//String -->Map
		Map<String, T> map = JSONObject.parseObject(string, Map.class);
		System.out.println(map.get("code")); //3223
	
		//Map -->String -->Object
		String jsonString = JSONObject.toJSONString(map);
		RiskSettings ts2 = JSON.parseObject(jsonString, RiskSettings.class);
		System.out.println(ts2.getCode());//3223
	}

//String --> list < Object >

		//String --> list<Object>
		String string="[{\"code\":\"3223\"},{\"code\":\"3223\"},{\"code\":\"3223\"}]";
		 List<String> l1 =JSON.parseArray(string, String.class);
		 List<RiskSettings> l2 =JSON.parseArray(string, RiskSettings.class);
		 List<Map<String,Object>> l3 =JSON.parseObject(string, new TypeReference<List<Map<String,Object>>>(){});

	list<Object>也是一种  Object

本篇幅做的是最简单的转换，并没有添加过滤条件， 如果 后续项目需要再补充