fastJson在java后台转换json格式数据探究（二）--处理数组/List/Map

直接给代码：

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 packagefastJson.test;
 
importjava.util.ArrayList;
 importjava.util.HashMap;
importjava.util.List;
importjava.util.Map;
 
importcom.alibaba.fastjson.JSON;
importcom.alibaba.fastjson.JSONArray;
publicclassFastJsonTest1
 {
 /**
 *数组转json格式字符串
*/
voidarray2Json(){
 String[]arr={"bill","green","maks","jim"};
 StringjsonText=JSON.toJSONString(arr,true);
 System.out.println("array2Json()方法：jsonText=="+jsonText);
//输出结果：jsonText==["bill","green","maks","jim"]
 }
*json格式字符串转数组
voidjson2Array(){
 StringjsonText="[\"bill\",\"green\",\"maks\",\"jim\"]";
 JSONArrayjsonArr=JSON.parseArray(jsonText);
 System.out.println("json2Array()方法：jsonArr=="+jsonArr);
//输出结果：jsonArr==["bill",153); font-weight:bold; background-color:inherit">voidarray2Json2(){
 Useruser1=newUser("P001","TOM",16);
 Useruser2=newUser("P002","JACKSON",0); background-color:inherit">21);
 Useruser3=newUser("P003","MARTIN",0); background-color:inherit">20);
 User[]userArr={user1,user2,user3};
 StringjsonText=JSON.toJSONString(userArr,153); font-weight:bold; background-color:inherit">true);
 System.out.println("array2Json2()方法：jsonText=="+jsonText);
//输出结果：jsonText==[{"age":16,"id":"P001","name":"TOM"},{"age":21,"id":"P002","name":"JACKSON"},{"age":20,"id":"P003","name":"MARTIN"}]
 }
/**
*json格式字符串转数组
*/
voidjson2Array2(){
 StringjsonText="[{\"age\":16,\"id\":\"P001\",\"name\":\"TOM\"},{\"age\":21,\"id\":\"P002\",\"name\":\"JACKSON\"},{\"age\":20,\"id\":\"P003\",\"name\":\"MARTIN\"}]";
 JSONArrayjsonArr=JSON.parseArray(jsonText);
 System.out.println("json2Array2()方法：jsonArr=="+jsonArr);
//输出结果：jsonArr==[{"age":16,0); background-color:inherit">*list集合转json格式字符串
voidlist2Json(){
 Listlist=newArrayList();
newUser("L001",108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> list.add(user1);
 Useruser2=newUser("L002",0); background-color:inherit">21);
 list.add(user2);
newUser("L003",108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> list.add(user3);
 StringjsonText=JSON.toJSONString(list,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> System.out.println("list2Json()方法：jsonText=="+jsonText);
voidlist2Json2(){
 Addressaddress1=newAddress("广东省","深圳市","科苑南路","580053");
 Useruser1=16,address1);
 list.add(user1);
 Addressaddress2=newAddress("江西省","南昌市","阳明路","330004");
21,address2);
 Addressaddress3=newAddress("陕西省","西安市","长安南路","710114");
 Useruser3=20,address3);
 list.add(user3);
 StringjsonText=JSON.toJSONString(list,248)"> System.out.println("list2Json2()方法：jsonText=="+jsonText);
//输出结果：jsonText==[{"address":{"city":"深圳市","post":"580053","province":"广东省","street":"科苑南路"},"age":16,{"address":{"city":"南昌市","post":"330004","province":"江西省","street":"阳明路"},"age":21,{"address":{"city":"西安市","post":"710114","province":"陕西省","street":"长安南路"},"age":20,"name":"MARTIN"}]
*map转json格式字符串
voidmap2Json(){
 Mapmap=newHashMap();
 Addressaddress1="580053");
 map.put("address1",address1);
 map.put("address2",108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> Addressaddress3="710114");
 map.put("address3",address3);
 StringjsonText=JSON.toJSONString(map,248)"> System.out.println("map2Json()方法：jsonText=="+jsonText);
//输出结果：jsonText=={"address1":{"city":"深圳市","address2":{"city":"南昌市","address3":{"city":"西安市","street":"长安南路"}}
staticvoidmain(String[]args)
 {
 FastJsonTest1test=newFastJsonTest1();
//数组转json格式字符串
 test.array2Json();
//json格式字符串转数组
 test.json2Array();
 test.array2Json2();
 test.json2Array2();
//list集合转json格式字符串
 test.list2Json();
//list集合转json格式字符串
 test.list2Json2();
//map转json格式字符串
 test.map2Json();
 }

控制台输出结果：

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fastJson在java后台转换json格式数据探究（二）--处理数组/List/Map

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