json 服务器端实例

package com.handson.json;import net.sf.json.*;import java.util.*;/*** 将java的数据或对象转变成js可以用的数据或对象（json 服务器端实例）* * @author brj* */public class JSONTest {/*** 将Java中的数组转变成json中的数组*/public static void arrayToJson() {   String[] kkname = { "CCED", "WPS", "WORD" };   JSONArray jr = JSONArray.fromObject(kkname);   System.out.println(jr);   System.out.println("=========================================");}/*** 将java的List中存的对象，转换成json中的对象数组*/public static void listToJson() {   List<Book> bklist = new ArrayList<Book>();   bklist.add(new Book("a1", "b", "111"));   bklist.add(new Book("a2", "b", "111"));   bklist.add(new Book("a3", "精通JAVA", "111"));   JSONArray jr = JSONArray.fromObject(bklist);   System.out.println(jr);   System.out.println("=========================================");}/*** 将json中的对象数组，转变成java中的List*/public static void createJson() {   JSONArray jn = JSONArray     .fromObject("[{name:'JAVA程序设计',isbn:'885596-99',author:'小东'},"       + "{name:'Thinking in Java', isbn:'123456', author:'Bruce'},"       + "{name:'VC++', isbn:'7-123-515', author:'Liming'}]");   // 注意上面的字符串中，开头和结尾带 [ 或 ]   // List a = (List) JSONArray.toList(jn, Book.class);//这种也可以，只是不推荐使用了   List a = (List) JSONArray.toCollection(jn, Book.class);   Book book = null;   for (Iterator it = a.iterator(); it.hasNext();) {    book = (Book) it.next();    System.out.println(book.getName() + " - " + book.getAuthor()      + " - " + book.getName());   }   System.out.println("=========================================");}/*** map --> json*/public static void MapToJson() {   Map map = new HashMap();   map.put("name", "小裴");   map.put("book", new Book("K语言程序设计", "李", "55588"));   map.put("shoBookName", "function(){alert('测试')}");   JSONObject jo = JSONObject.fromObject(map);   System.out.println(jo);   System.out.println("=========================================");}/*** bean --> json*/public static void beanToJson() {   JSONObject jo = JSONObject.fromObject(new Book("1", "3", "ABCd"));   System.out.println(jo);   System.out.println("=========================================");}/*** json --> bean*/public static void jsonToBean() {   JSONObject jo = JSONObject     .fromObject("{name:'C++程序设计',isbn:'885596-989',author:'小东'}");   Book book = (Book) JSONObject.toBean(jo, Book.class);   System.out.println(book.getAuthor() + "-" + book.getName());   System.out.println("=========================================");}/*** bean --> json*/public static void beanToJson2() {   Book book = new Book("isbn-1111", "Thinking in java", "Bruce");   Publisher publisher = new Publisher("1001", "中国机械工业出版社", "北京",     "010-111111");   book.setPublisher(publisher);   // JSONObject jo = JSONObject.fromObject(book);   // //{"author":"Bruce","isbn":"isbn-1111","name":"Thinking in   // java","publisher":{"address":"北京","code":"1001","name":"中国机械工业出版社","telephone":"010-111111"}}   JSONArray jo = JSONArray.fromObject(book); // [{"author":"Bruce","isbn":"isbn-1111","name":"Thinking   // in   // java","publisher":{"address":"北京","code":"1001","name":"中国机械工业出版社","telephone":"010-111111"}}]   System.out.println(jo);   System.out.println("=========================================");}/*** json --> bean*/public static void jsonToBean2() {   // String json = "[{'author':'Bruce','isbn':'isbn-1111','name':'Thinking   // in   // java','publisher':{'address':'北京','code':'1001','name':'中国机械工业出版社','telephone':'010-111111'}}]";   String json = "{'author':'Bruce','isbn':'isbn-1111','name':'Thinking in java','publisher':{'address':'北京','code':'1001','name':'中国机械工业出版社','telephone':'010-111111'}}";   JSONObject jo = JSONObject.fromObject(json);   // JSONArray jo = JSONArray.fromObject(json);   // List list = (List)jo.toCollection(jo, Book.class);   // Book book = (Book)list.get(0);   Book book = (Book) JSONObject.toBean(jo, Book.class);   System.out.println(book.getName());   System.out.println(book.getPublisher().getName());   System.out.println("=========================================");}/*** main to test method* * @param args* @throws Exception*/public static void main(String[] args) throws Exception {   arrayToJson();   listToJson();   createJson();   MapToJson();   beanToJson();   jsonToBean();   beanToJson2();   jsonToBean2();}}

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下面是用的Book类：

package com.handson.json;public class Book {private String name;private String isbn;private String author;private Publisher publisher;public Book() {}public Book(String isbn, String name, String author) {   this.isbn = isbn;   this.name = name;   this.author = author;}public String getName() {   return name;}public void setName(String name) {   this.name = name;}public String getIsbn() {   return isbn;}public void setIsbn(String isbn) {   this.isbn = isbn;}public String getAuthor() {   return author;}public void setAuthor(String author) {   this.author = author;}public Publisher getPublisher() {   return publisher;}public void setPublisher(Publisher publisher) {   this.publisher = publisher;}}