php array 转json及java 转换 json数据格式操作示例

本文实例讲述了php array 转json及java 转换 json数据格式操作。分享给大家供大家参考，具体如下：

php array 转json 数据

$arr = array(
 "demo1" => "my demo1",
 "demo2" => array(
 "demo2_demo1"=>"aaaaaaaa",
 "demo2_demo2"=>"bbbbbbbb", 
 "demo2_demo3"=>array(
 "demo2_demo3_demo1"=>"ccccccc"
 )
 ),
 "demo3" => 22
);
$json_str = json_encode($arr,true);
$arr = json_decode($json_str,true);
var_dump($json_str);
var_dump($arr);
//查看结果

运行结果：

string(137) "{"demo1":"my demo1","demo2":{"demo2_demo1":"aaaaaaaa","demo2_demo2":"bbbbbbbb","demo2_demo3":{"demo2_demo3_demo1":"ccccccc"}},"demo3":22}" array(3) {   ["demo1"]=>   string(8) "my demo1"   ["demo2"]=>   array(3) {     ["demo2_demo1"]=>     string(8) "aaaaaaaa"     ["demo2_demo2"]=>     string(8) "bbbbbbbb"     ["demo2_demo3"]=>     array(1) {       ["demo2_demo3_demo1"]=>       string(7) "ccccccc"     }   }   ["demo3"]=>   int(22) }

java json数据格式转换依赖包

commons-beanutils-1.8.3.jar, commons-collections-3.2.1.jar, commons-lang-2.6.jar, commons-logging-1.1.1.jar, ezmorph-1.0.6.jar, json-lib-2.4-jdk15.jar,

添加至构建路径。

package Main;
import net.sf.json.JSONObject;
import net.sf.json.JSONArray;
import java.util.Map;
import java.util.HashMap;
import java.util.List;
import java.util.ArrayList;
import Main.Demo1;
public class Index 
{
 public static void main(String[] args)
 {
 index4();
 }
 /**
 * 简单的simple
 * */
 public static void index1()
 {
 JSONObject json = new JSONObject();
 json.element("name","谭勇");
 json.element("age",22);
 System.out.println(json.toString());
 }
 /**
 * Map 数据转json
 * */
 public static void index2()
 {
 JSONObject json = new JSONObject();
 Map<String,String> map = new HashMap<String,String>();
 map.put("name", "谭勇");
 map.put("age", "22");
 json.accumulateAll(map);
 System.out.println(json.toString());
 }
 /**
 * List<Map> 转json
 * */
 public static void index3()
 {
 JSONArray arr = new JSONArray();
 List<Map<String,String>> list = new ArrayList<Map<String,String>>();
 list.add(getMap("name","谭勇"));
 list.add(getMap("age","22"));
 arr.addAll(list);
 System.out.println(arr.toString());
 }
 /**
 * 对象转Json
 * */
 public static void index4()
 {
 Demo1 demo1 = new Demo1();
 demo1.setName("谭勇");
 demo1.setAge(22);
 JSONObject json = new JSONObject();
 JSONArray arr = new JSONArray();
 json.element("demo1",demo1);
 arr.add(demo1);
 //json.containsKey(demo1);
 System.out.println(json.toString());
 System.out.println(arr.toString());
 }
 private static Map<String,String> getMap(String key,String val)
 {
 Map<String,String> map = new HashMap<String,String>();
 map.put(key, val);
 return map;
 }
}

Demo1.java

package Main;
public class Demo1 
{
 private String name;
 private int age;
 public void setName(String name)
 {
 this.name = name;
 }
 public String getName()
 {
 return this.name;
 }
 public void setAge(int age)
 {
 this.age = age;
 }
 public int getAge()
 {
 return this.age;
 }
}