如题所述
1.ç®åç解æjsonå符串
é¦å å°jsonå符串转æ¢ä¸ºjson对象ï¼ç¶åå解æjson对象ï¼è¿ç¨å¦ä¸ã
JSONObject jsonObject = JSONObject.fromObject(jsonStr);
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<pre></pre><span style="white-space:pre"></span>
<pre></pre>
æ ¹æ®jsonä¸çé®å¾å°å®çå¼
String name = jsonObject.getString("name");
int num = jsonObject.getInt("num");
String sex = jsonObject.getString("sex");
int age = jsonObject.getInt("age");
2.å°jsonå符串转æ¢ä¸ºjava对象
åæ ·å å°jsonå符串转æ¢ä¸ºjson对象ï¼åå°json对象转æ¢ä¸ºjava对象ï¼å¦ä¸æ示ã
JSONObject obj = new JSONObject().fromObject(jsonStr);//å°jsonå符串转æ¢ä¸ºjson对象
å°json对象转æ¢ä¸ºjava对象
Person jb = (Person)JSONObject.toBean(obj,Person.class);//å°å»ºjson对象转æ¢ä¸ºPerson对象
3.å°java对象转æ¢ä¸ºjsonå符串
å å°java对象转æ¢ä¸ºjson对象ï¼å¨å°json对象转æ¢ä¸ºjsonå符串
JSONObject json = JSONObject.fromObject(obj);//å°java对象转æ¢ä¸ºjson对象
String str = json.toString();//å°json对象转æ¢ä¸ºå符串
å®æ´ä»£ç å¦ä¸ï¼
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package baz.parse;
import java.util.ArrayList;
import java.util.List;
import net.sf.json.JSON;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JSONSerializer;
import baz.bean.Person;
public class ParseJson {
private String jsonStr;
public ParseJson() {
}
public ParseJson(String str){
this.jsonStr = str;
}
/**
* 解æjsonå符串
*/
public void parse(){
JSONObject jsonObject = JSONObject.fromObject(jsonStr);
String name = jsonObject.getString("name");
int num = jsonObject.getInt("num");
String sex = jsonObject.getString("sex");
int age = jsonObject.getInt("age");
System.out.println(name + " " + num + " " + sex + " " + age);
}
//å°jsonå符串转æ¢ä¸ºjava对象
public Person JSON2Object(){
//æ¥æ¶{}对象ï¼æ¤å¤æ¥æ¶æ°ç»å¯¹è±¡ä¼æå¼å¸¸
if(jsonStr.indexOf("[") != -1){
jsonStr = jsonStr.replace("[", "");
}
if(jsonStr.indexOf("]") != -1){
jsonStr = jsonStr.replace("]", "");
}
JSONObject obj = new JSONObject().fromObject(jsonStr);//å°jsonå符串转æ¢ä¸ºjson对象
Person jb = (Person)JSONObject.toBean(obj,Person.class);//å°å»ºjson对象转æ¢ä¸ºPerson对象
return jb;//è¿åä¸ä¸ªPerson对象
}
}
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package baz.bean;
public class Person {
private String name;
private int num;
private String sex;
private int age;
public Person() {
// TODO Auto-generated constructor stub
}
public Person(String name, int num, String sex, int age) {
super();
this.name = name;
this.num = num;
this.sex = sex;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
å°java对象转æ¢ä¸ºjsonå符串
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package baz.cons;
import net.sf.json.JSONObject;
/**
* å°java对象转æ¢ä¸ºjsonå符串
* @author Administrator
*
*/
public class ConsJson {
public ConsJson() {
// TODO Auto-generated constructor stub
}
public String Object2Json(Object obj){
JSONObject json = JSONObject.fromObject(obj);//å°java对象转æ¢ä¸ºjson对象
String str = json.toString();//å°json对象转æ¢ä¸ºå符串
return str;
}
}
æµè¯ç±»ï¼
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package baz.test;
import java.util.List;
import baz.bean.Person;
import baz.cons.ConsJson;
import baz.parse.ParseJson;
public class Test {
public static void main(String[] args) {
//å°å符串转æ¢ä¸ºjson对象ï¼ç¶åæ ¹æ®å»ºå¾å°ç¸åºçå¼
ParseJson pj = new ParseJson("{\"name\":\"gu\",\"num\":123456,\"sex\":\"male\",\"age\":24}");
pj.parse();
//å°ä¸ä¸ªjsonå符串转æ¢ä¸ºjava对象
Person p = pj.JSON2Object();
System.out.println("Name:" + p.getName());
System.out.println("Num:" + p.getNum());
System.out.println("Sex:" + p.getSex());
System.out.println("age:" + p.getAge());
//å°ä¸ä¸ªjava对象转æ¢ä¸ºJsonå符串
Person p1 = new Person("gu1",123,"male",23);
ConsJson cj = new ConsJson();
String str1 = cj.Object2Json(p1);
System.out.println(str1);
}
}
æµè¯è¾åºå¦ä¸ï¼
gu 123456 male 24
Name:gu
Num:123456
Sex:male
age:24
{"age":23,"name":"gu1","num":123,"sex":"male"}
é¦å å°jsonå符串转æ¢ä¸ºjson对象ï¼ç¶åå解æjson对象ï¼è¿ç¨å¦ä¸ã
JSONObject jsonObject = JSONObject.fromObject(jsonStr);
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<pre></pre><span style="white-space:pre"></span>
<pre></pre>
æ ¹æ®jsonä¸çé®å¾å°å®çå¼
String name = jsonObject.getString("name");
int num = jsonObject.getInt("num");
String sex = jsonObject.getString("sex");
int age = jsonObject.getInt("age");
2.å°jsonå符串转æ¢ä¸ºjava对象
åæ ·å å°jsonå符串转æ¢ä¸ºjson对象ï¼åå°json对象转æ¢ä¸ºjava对象ï¼å¦ä¸æ示ã
JSONObject obj = new JSONObject().fromObject(jsonStr);//å°jsonå符串转æ¢ä¸ºjson对象
å°json对象转æ¢ä¸ºjava对象
Person jb = (Person)JSONObject.toBean(obj,Person.class);//å°å»ºjson对象转æ¢ä¸ºPerson对象
3.å°java对象转æ¢ä¸ºjsonå符串
å å°java对象转æ¢ä¸ºjson对象ï¼å¨å°json对象转æ¢ä¸ºjsonå符串
JSONObject json = JSONObject.fromObject(obj);//å°java对象转æ¢ä¸ºjson对象
String str = json.toString();//å°json对象转æ¢ä¸ºå符串
å®æ´ä»£ç å¦ä¸ï¼
[java] view plain copy
package baz.parse;
import java.util.ArrayList;
import java.util.List;
import net.sf.json.JSON;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JSONSerializer;
import baz.bean.Person;
public class ParseJson {
private String jsonStr;
public ParseJson() {
}
public ParseJson(String str){
this.jsonStr = str;
}
/**
* 解æjsonå符串
*/
public void parse(){
JSONObject jsonObject = JSONObject.fromObject(jsonStr);
String name = jsonObject.getString("name");
int num = jsonObject.getInt("num");
String sex = jsonObject.getString("sex");
int age = jsonObject.getInt("age");
System.out.println(name + " " + num + " " + sex + " " + age);
}
//å°jsonå符串转æ¢ä¸ºjava对象
public Person JSON2Object(){
//æ¥æ¶{}对象ï¼æ¤å¤æ¥æ¶æ°ç»å¯¹è±¡ä¼æå¼å¸¸
if(jsonStr.indexOf("[") != -1){
jsonStr = jsonStr.replace("[", "");
}
if(jsonStr.indexOf("]") != -1){
jsonStr = jsonStr.replace("]", "");
}
JSONObject obj = new JSONObject().fromObject(jsonStr);//å°jsonå符串转æ¢ä¸ºjson对象
Person jb = (Person)JSONObject.toBean(obj,Person.class);//å°å»ºjson对象转æ¢ä¸ºPerson对象
return jb;//è¿åä¸ä¸ªPerson对象
}
}
[java] view plain copy
package baz.bean;
public class Person {
private String name;
private int num;
private String sex;
private int age;
public Person() {
// TODO Auto-generated constructor stub
}
public Person(String name, int num, String sex, int age) {
super();
this.name = name;
this.num = num;
this.sex = sex;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
å°java对象转æ¢ä¸ºjsonå符串
[java] view plain copy
package baz.cons;
import net.sf.json.JSONObject;
/**
* å°java对象转æ¢ä¸ºjsonå符串
* @author Administrator
*
*/
public class ConsJson {
public ConsJson() {
// TODO Auto-generated constructor stub
}
public String Object2Json(Object obj){
JSONObject json = JSONObject.fromObject(obj);//å°java对象转æ¢ä¸ºjson对象
String str = json.toString();//å°json对象转æ¢ä¸ºå符串
return str;
}
}
æµè¯ç±»ï¼
[java] view plain copy
package baz.test;
import java.util.List;
import baz.bean.Person;
import baz.cons.ConsJson;
import baz.parse.ParseJson;
public class Test {
public static void main(String[] args) {
//å°å符串转æ¢ä¸ºjson对象ï¼ç¶åæ ¹æ®å»ºå¾å°ç¸åºçå¼
ParseJson pj = new ParseJson("{\"name\":\"gu\",\"num\":123456,\"sex\":\"male\",\"age\":24}");
pj.parse();
//å°ä¸ä¸ªjsonå符串转æ¢ä¸ºjava对象
Person p = pj.JSON2Object();
System.out.println("Name:" + p.getName());
System.out.println("Num:" + p.getNum());
System.out.println("Sex:" + p.getSex());
System.out.println("age:" + p.getAge());
//å°ä¸ä¸ªjava对象转æ¢ä¸ºJsonå符串
Person p1 = new Person("gu1",123,"male",23);
ConsJson cj = new ConsJson();
String str1 = cj.Object2Json(p1);
System.out.println(str1);
}
}
æµè¯è¾åºå¦ä¸ï¼
gu 123456 male 24
Name:gu
Num:123456
Sex:male
age:24
{"age":23,"name":"gu1","num":123,"sex":"male"}
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