Json數(shù)據(jù)怎么利用Java進(jìn)行解析

{
 "translation": [
 "愛"
 ],
 "basic": {
 "us-phonetic": "lʌv",
 "phonetic": "lʌv",
 "uk-phonetic": "lʌv",
 "explains": [
  "n. 戀愛；親愛的；酷愛；喜愛的事物",
  "vt. 喜歡；熱愛；愛慕",
  "vi. 愛",
  "n. (Love)人名；(英)洛夫"
 ]
 },
 "web": [
 {
  "value": [
  "愛情",
  "愛",
  "愛"
  ],
  "key": "Love"
 },
 {
  "value": [
  "無盡的愛",
  "藍(lán)色生死戀",
  "不了情"
  ],
  "key": "Endless Love"
 },
 {
  "value": [
  "早戀",
  "青春期戀愛",
  "初戀"
  ],
  "key": "puppy love"
 }
 ]
}

String st = "{\"translation\":[\"愛\"],\"basic\":{\"us-phonetic\":\"lʌv\",\"phonetic\":\"lʌv\",\"uk-phonetic\":\"lʌv\",\"explains\":[\"n. 戀愛；親愛的；酷愛；喜愛的事物\",\"vt. 喜歡；熱愛；愛慕\",\"vi. 愛\",\"n. (Love)人名；(英)洛夫\"]},\"query\":\"love\",\"errorCode\":0,\"web\":[{\"value\":[\"愛情\",\"愛\",\"愛\"],\"key\":\"Love\"},{\"value\":[\"無盡的愛\",\"藍(lán)色生死戀\",\"不了情\"],\"key\":\"Endless Love\"},{\"value\":[\"早戀\",\"青春期戀愛\",\"初戀\"],\"key\":\"puppy love\"}]}";


  JSONObject str = JSONObject.fromObject(st);  //json數(shù)據(jù)的最外層肯定是一個(gè)對(duì)象，參數(shù)為字符串
 //對(duì)象str又分為3部分：translation，basic，web 
  if(str.has("translation")){
 JSONArray tr = str.getJSONArray("translation");  //translation是一個(gè)json數(shù)組
 for(int i = 0 ;i<tr.size();i++){ //對(duì)數(shù)組元素進(jìn)行遍歷
  System.out.println(tr.getString(i));  //因?yàn)樵氐闹凳荢tring類型的所以忽的值的方法是getString（index）
 }
  }

  //basic中有數(shù)組也有元素
  if(str.has("basic")){ 
 JSONObject us = str.getJSONObject("basic");  //對(duì)元素進(jìn)行解析，并輸出元素的值
 System.out.print("美：[" + us.getString("us-phonetic") + "]\t");  
 
 JSONObject uk = str.getJSONObject("basic");
 System.out.print("英：[" + us.getString("uk-phonetic") + "]\n");
 
 JSONObject basic = str.getJSONObject("basic");  //先獲得basic對(duì)象
 JSONArray explain = basic.getJSONArray("explains"); 　//再獲得basic對(duì)象下的explains數(shù)組　
 for(int i = 0;i<explain.size(); i++){ //對(duì)數(shù)組元素進(jìn)行遍歷
  System.out.println(explain.getString(i));
 }  
  }
  if(str.has("web")){ //web是一個(gè)數(shù)組，每個(gè)數(shù)組元素又是三個(gè)Json對(duì)象
 System.out.println("拓展：");  
 JSONArray web = str.getJSONArray("web");  
 for(int i = 0; i<web.size() ; i++ ){ //但是對(duì)象中又嵌套著數(shù)組
  String t = web.getString(i); //遍歷過程將web數(shù)組元素賦給String型變量
  JSONObject we = JSONObject.fromObject(t); //通過String又得到每個(gè)元素的對(duì)象
  if(we.has("key")){ 
 System.out.print(we.getString("key")+"\t");  //得到對(duì)象中的元素
  }
  if(we.has("value")){  
 JSONArray value = we.getJSONArray("value");
 for(int x = 0 ; x<value.size() ;x++ ){ //遍歷對(duì)象中嵌套的數(shù)組
  System.out.print(value.getString(x));  //得到數(shù)組元素的值
  if(x<value.size()-1){
 System.out.print("；");
  }
 }
  }
  System.out.println();
 }
  }