smart-json的简单使用(一）

来源：互联网发布：jsp页面显示数据库编辑：程序博客网时间：2024/05/17 18:03

smart-json是一个高性能的json类库：

本实例主要讲了：1.如何将xml字符串转换为Json. 2.如何将json转换为对象.

package com.ilucky.json.smart;import com.ilucky.json.smart.model.Body;import com.ilucky.json.smart.model.Head;import com.ilucky.json.smart.model.Message;import net.minidev.json.JSONArray;import net.minidev.json.JSONObject;import net.minidev.json.JSONValue;/** * @author IluckySi * @date 20140801 */public class MainTest {public static void main(String[] args) {/**<head><ip>127.0.0.1><mac>12-23-34-45-56-67</mac></head><body><cpu>60%</cpu><memory>70%</memory><disk>80%</disk></body> *///将xml信息放到JSON字符串中.String jsonString = convertString2Json();System.out.println(jsonString);//将JSON字符串中转换为对象.Message message = convertJson2Object(jsonString);System.out.println(message);}//将xml信息放到JSON字符串中.public static String convertString2Json() {//1.声明一个JSON数组.JSONArray host = new JSONArray();//2.存放xml文件头信息.JSONObject head = new JSONObject();JSONObject headInfo = new JSONObject();headInfo.put("ip", "127.0.0.1");headInfo.put("mac", "12-23-34-45-56-67");head.put("head", headInfo);host.add(head);//3.存放xml文件体信息.JSONObject body = new JSONObject();JSONObject bodyInfo = new JSONObject();bodyInfo.put("cpu", "60");bodyInfo.put("memory", "70");bodyInfo.put("disk", "80");body.put("body", bodyInfo);host.add(body);//4.将JSONA数组转换为字符串.String jsonString = host.toJSONString();return jsonString;}//将JSON字符串中转换为对象.public static Message convertJson2Object(String jsonString) {//1.将JSON字符串转换为JSON数组.JSONArray jsonArray = (JSONArray) JSONValue.parse(jsonString);Message message = new Message();//2.遍历JSON数组.for (int i = 0; jsonArray != null && i < jsonArray.size(); i++) {JSONObject jsonObject = (JSONObject) jsonArray.get(i);if(jsonObject.containsKey("head")) {JSONObject childJsonObject = (JSONObject)jsonObject.get("head");Head head = new Head();head.setIp(childJsonObject.get("ip").toString());head.setMac(childJsonObject.get("mac").toString());message.setHead(head);} else if(jsonObject.containsKey("body")) {JSONObject childJsonObject = (JSONObject)jsonObject.get("body");Body body = new Body();body.setCpu(childJsonObject.get("cpu").toString());body.setMemory(childJsonObject.get("memory").toString());body.setDisk(childJsonObject.get("disk").toString());message.setBody(body);}}return message;}}/** 输出结果:[{"head":{"mac":"12-23-34-45-56-67","ip":"127.0.0.1"}},{"body":{"disk":"80","cpu":"60","memory":"70"}}]message = {head = (ip = 127.0.0.1, mac = 12-23-34-45-56-67), body = (cpu = 60, memory = 70, disk = 80)} */

package com.ilucky.json.smart.model;/** * @author IluckySi * @date 20140801 */public class Head {private String ip;private String mac;public String getIp() {return ip;}public void setIp(String ip) {this.ip = ip;}public String getMac() {return mac;}public void setMac(String mac) {this.mac = mac;}public String toString() {return "ip = " + ip + ", mac = " + mac;}}

package com.ilucky.json.smart.model;/** * @author IluckySi * @date 20140801 */public class Body {private String cpu;private String memory;private String disk;public String getCpu() {return cpu;}public void setCpu(String cpu) {this.cpu = cpu;}public String getMemory() {return memory;}public void setMemory(String memory) {this.memory = memory;}public String getDisk() {return disk;}public void setDisk(String disk) {this.disk = disk;}public String toString() {return "cpu = " + cpu + ", memory = " + memory + ", disk = " + disk;}}

package com.ilucky.json.smart.model;/** * @author IluckySi * @date 20140801 */public class Message {private Head head;private Body body;public Head getHead() {return head;}public void setHead(Head head) {this.head = head;}public Body getBody() {return body;}public void setBody(Body body) {this.body = body;}public String toString() {return "message = {head = (" + head + "), body = (" + body + ")}";}}

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