【黑馬程序員】阿里巴巴FastJson對(duì)數(shù)據(jù)的常用操作

黑馬程序員成都中心編著黑馬程序員成都中心編著序員】阿里巴唳wwwJ傳智JJ數(shù)據(jù)的常用操作高端IT教育品牌是一個(gè)語(yǔ)言編寫(xiě)的高性能功能完善的庫(kù)。它采用一種“假定有序快速匹配”的算法，把的性能提升到極致，是目前語(yǔ)言中最快的庫(kù)。輸出、接口簡(jiǎn)單易用，已經(jīng)被廣泛使用在緩存序列化、協(xié)議交互、輸出、客戶(hù)端等多種應(yīng)用場(chǎng)景。阿里巴巴的開(kāi)源地址為：工程可以在文件加入依賴(lài)<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.21</version></dependency>fastjson入口類(lèi)是com.alibaba.fastjson.JSON,主要的API是JSON.toJSONString,0parseObjectD常用的序列化操作都可以在JSON常用的序列化操作都可以在JSON□□□□□□□□□□□□////把JSON文本publicstatic//把JSON文本publicstatic//把JSON文本publicstatic//把JSON文本publicstaticparse為JSONObject或者JSONArrayfinalObjectparse(Stringtext);parse成JSONObjectfinalJSONObjectparseObject(Stringtext);parse為JavaBeanfinal<T>TparseObject(Stringtext,Class<T>clazz);parse成JSONArrayfinalJSONArrayparseArray(Stringtext);//把JSON文本parse□JavaBean集合publicstaticfinal<T>List<T>parseArray(Stringtext,Class<T>clazz);//將JavaBean□□□□JSON□□publicstaticfinalStringtoJSONString(Objectobject);//將JavaBean□□□□□□□□JSON□□publicstaticfinalStringtoJSONString(Objectobject,booleanprettyFormat);//□JavaBean□□□JSONObject□□JSONArray。publicstaticfinalObjecttoJSON(ObjectjavaObject);

(//序列化^標(biāo)鼎落//□□□□□(//序列化^標(biāo)鼎落//□□□□□意副0黯傳智播客旗下ng(obj);VOvo=JSON.parseObject("...",VO.class);//□□□□□□：importcom.alibaba.fastjson.TypeReference;List<VO>list=JSON.parseObject("...",newTypeReference<List<VO>>(){});下面貼出自己代碼，相當(dāng)于是使用操作的一個(gè)集合，基本上滿(mǎn)足開(kāi)發(fā)中下面貼出自己代碼，相當(dāng)于是使用操作的一個(gè)集合，基本上滿(mǎn)足開(kāi)發(fā)中絕大部分的解析和拼接了。packageheima.itcast.demo;importcom.alibaba.fastjson.JSON;importcom.alibaba.fastjson.JSONObject;importcom.alibaba.fastjson.TypeReference;importheima.itcast.demo.model.Book;importjava.util.*;publicclassTest{publicstaticvoidmain(String[]args){//String□□□□□□BookStrToObject();//String□□□jsonObjectStrToJsonObject();//實(shí)體類(lèi)轉(zhuǎn)換為json//□□□□□□□□json數(shù)組形式的string//String□□□List<Book>StrToListObject();//String□□□□□//String□□□ArrayListStrToArrayList();//map和json互相轉(zhuǎn)換mapTo();}/***String□□□□□□Book*/publicstaticvoidStrToObject(){StringBuildersb=newStringBuilder();sb.append("{");sb.append("\"name\":\"教父三部曲\",");

傳曾福'：履里奧?普佐\",");付數(shù)譽(yù)100崎。;appenBookbook=JSON.parseObject(sb.toString(),Book.class);System.out.println("書(shū)名："+book.getName()+";作者："+book.getAuthor()+";價(jià)格："+book.getPrice());}/***String轉(zhuǎn)化為jsonObject*/publicstaticvoidStrToJsonObject(){StringBuildersb=newStringBuilder();sb.append("{");sb.append("\"name\":\"教父三部曲\",");sb.append("\"author\":、〃馬里奧?普佐\",");sb.append("\"price\":\"100\"");sb.append("}");JSONObjectjsonObj=JSON.parseObject(sb.toString());for(Map.Entry<String,Object>entry:jsonObj.entrySet()){System.out.println(entry.getKey()+"--"+entry.getValue());}}/***實(shí)體類(lèi)轉(zhuǎn)換為*多個(gè)實(shí)體類(lèi)轉(zhuǎn)換為*實(shí)體類(lèi)轉(zhuǎn)換為*多個(gè)實(shí)體類(lèi)轉(zhuǎn)換為*String轉(zhuǎn)化為*/publicstaticjson數(shù)組形式的stringList<Book>voidStrToListObject(){List<Book>bookList=newArrayList<>();Bookbookl=newBook(〃教父三部曲","□□□?□□",100)",30)Bookbook2=newBook(〃天才在左瘋子在右","□□",100)",30)bookList.add(book2);//實(shí)體類(lèi)轉(zhuǎn)換為jsonStringbook1Str=JSON.toJSONString(book1);//□□□□□□□□json數(shù)組形式的stringStringbookStr=JSON.toJSONString(bookList);//String□□□List<Book>ejma}3ejma}3=旗下/**String□□□□□String轉(zhuǎn)化為ArrayList*/publicstaticvoidStrToArrayList(){StringBuildersb=newStringBuilder();sb.append("[{");sb.append("\"name\":\"教父三部曲\",");sb.append("\"author\":、"馬里奧?普佐\",")；sb.append("\"price\":\"100\"");sb.append("}]");//String□□□□□Book[]arrBook=JSON.parseObject(sb.toString(),newTypeReference<Book[]>(){});List<Book>list=Arrays.asList(arrBook);for(inti=0;i<arrBook.length;i++){System.out.println(arrBook[i].toString());}//String□□□ArrayListArrayList<Book>bookList=JSON.parseObject(sb.toString(),newTypeReference<ArrayList<Book>>(){});for(Bookbook:bookList){System.out.println(book.toString());}}/**map和json互相轉(zhuǎn)換*/publicstaticvoidmapTo(){Map<String,String>map=newHashMap<>();map.put("name","教父三部曲");map.put("author","□□□?□□”);map.put("price","100");//map轉(zhuǎn)換為jsonStringjson=JSON.toJSONString(map);?黑孽jsWWW」氣on轉(zhuǎn)換為m.ap苧播客旗不［或日TWTOTP‘山豳啟”O(jiān)N.端抑jctj牌);ystem.out.println(map1.toString());Map<String,String>map2=(Map<String,String>)JSON.parse(json);}}附類(lèi)代碼packageheima.itcast.demo.model;publicclassBook{privateStringname;privateStringauthor;privateintprice;publicBook(){}publicBook(Stringname,Stringauthor,intprice){=name;this.author=author;this.price=price;}publicStringgetName(){returnname;}publicvoidsetName(Strin