convert json to map java

);} The code above converts a JSON string to a custom complex data entity in Java. Complexuser: Check the code in the last appendix. 3. Convert JSON data to list in Java /*** Convert the list data encapsulated in

public class Xmltomap {public static mapmapif (doc = = null)return map;Element root = Doc.getrootelement ();for (Iterator Iterator = Root.elementiterator (); Iterator.hasnext ();) {Element e = (Element) Iterator.next ();System.out.println (E.getname ());List List = E.elements ();if (list.size () > 0) {Map.put (E.getname (), Dom2map (e));}elseMap.put (E.getname (), E.gettext ());}return map;}public static

1. Array goto list:string[] countries = {"Array", "List", "Set", "Map"};List List = arrays.aslist (countries);2.Array turn : SetString [] countries = {"Array", "List", "Set"};setSYSTEM.OUT.PRINTLN (set);3. List to array:listList.add ("Array");List.add ("List");List.add ("Set");List.add ("Map");String [] countries = List.toarray (New String[list.size ()));4. Map t

Original: Share very useful Java program (key Code) (V)---convert Array to MapImport Java.util.Map; Import Org.apache.commons.lang.ArrayUtils; public class Main {public static void Main (string[] args) { string[][] countries = {"states", "New York "}, {" Kingdom "," London "}, {" Netherland "," Amsterdam "}, {" Japan "," Tokyo "}, {" France "," Paris "}};

JSON object + * @paramCLS A * @paramobj the * @return + */ - Public StaticJsonobject Getjson (classcls, Object obj) { $Jsonobject JSON =NewJsonobject (); $field[] Fieldarray =cls.getdeclaredfields (); - for(Field field:fieldarray) { -String FieldName =field.getname (); theString methodName = "Get" + fieldname.substring (0, 1). toUpperCase () + fieldname.substring (1); -

In Java, we often need to do some conversion to list, array, etc., of course there are many kinds of conversion methods, but which method is both convenient and efficient? Let me introduce you to the best conversion method between sets.convert 1.List to arraylist2.Array Conversion to Liststring[] countries = {"China", "Switzerland", "Italy", "France"}; List List = arrays.aslist (countries);3.Map Conversion

Publicstaticvoidmain (String[]args) {stringstudentjson= "{\" username\ ": \" Xiaoming\ ", \" age\ ": 20,\" desc\ ": \" good student \ "}"; stringstudentjson2= "{\" username\ ": \" xiaohong\ ", \" age\ ": 20,\" desc\ ": \" good student \ "}"; String[]json={studentjson,studentjson2};//studentst= ( Student) json2bean (studentjson,student.class); jsonarray jsonarray=jsonarray.fromobject (JSON);//

Public classMaputil { Public StaticObject convert2object (Class clazz,mapthrowsintrospectionexception, instantiationexception, illegalaccessexception{BeanInfo bi=Introspector.getbeaninfo (Clazz); Object obj=clazz.newinstance (); Propertydescriptor[] PDS=bi.getpropertydescriptors (); String PName; for(PropertyDescriptor Pd:pds) {pName=Pd.getname (); if(Map.containskey (pName)) {Try{Pd.getwritemethod (). Invoke (obj, Map.get (pName) [0]); } Catch(Exception ex) {Logger.getlogger (maputil.cl

Import Java.util.HashMap;Import Java.util.Iterator;Import Java.util.Map;Import Net.sf.json.JSONObject;/** * Convert HashMap to JavaBean using JSON.* @author Administrator* @Date 2015-7-18 * *public class People {Private String namestring;Private String agestring;Public String toString () {Return "[namestring=" +namestring+ "########" + "agestring=" +agestring+ "]";}Public String getnamestring () {return nam

Use JSON-lib to convert a Java object to a JSON string After learning to use Ajax in J2EE, sometimes the client data returned from the server is an object. It is easy to make errors when you manually piece together the JSON string. Google knows the

Use of json packages in java and conversion between strings, map, list, custom objects, and jsonmap To convert a map and a string, you need to import these jar packages, which are the most basic jar packages. After multiple parties try to draw a conclusion: First import the

I. General description XML and JSON are the most common data exchange formats. This example shows how to convert a java object to JSON output. Ii. Process 1. In the project above, Add the code in "com. waylau. rest. resources. UserResource". The Code is as follows: @GET @Path("/getUserJson") @Produces(Me

Convert xml to json objects in java 1. A jar package is required:Json-lib-2.4-jdk15.jar and xom-1.2.5.jar, maven Repository:Net. sf. json-libJson-lib2.4Jdk15XomXom1.2.52. Code:Public static JSON xmlToJson (String xml ){XMLSerializer xmlSerializer = new XMLSerializer ();If (

1. Import the Jackson jarDependency> groupId>Com.fasterxml.jackson.coregroupId> Artifactid>Jackson-databindArtifactid> version>2.8.9version>Dependency>2. Java code is as follows Public classJsonutils {//defining the Jackson object Private Static FinalObjectmapper MAPPER =NewObjectmapper (); /*** Converts an object into a JSON string. * @paramData *@return */ Public StaticString Objecttoj

Currently, it is quite simple to convert a Java object to a JSON object. However, it is more complicated to convert a JSON object to a Java object. The first method is JSON-lib. The sec

Java code publicclassuser{ privateStringusername; privatestring password; publicstring getusername () { returnusername; } publicvoidsetusername ( Stringusername) { this.username= username; } publicstring getpassword () { returnpassword; } publicvoidsetpassword ( Stringpassword) NBSp { this.password=password; } } Normal JavaBean (example of user) to JSON format 1. Turn into Jsonarray type User user = n

String jsonobjectdata="{\" data1\ ": {\" a1\ ": \" 12\ ", \" b1\ ": \" 112\ ", \" c1\ ": \" 132\ ", \" d1\ ": \" 134\ "},\" data2\ ": {\ "a2\": \ "12\", \ "b2\": \ "112\", \ "c2\": \ "132\", "d2\": \ "134\"},\ "data3\": {\ "a3\": \ "12\", \ "b3\": \ "112\", \ "c3\": \ "132\ ", \" d3\ ": \" 134\ "}}"; Jsonobject jsonobject = Jsonobject.fromobject (Jsonobjectdata); map for (entry Object Strval1 = Entry.getvalue (); Jsonobject JsonO