JSON and Java data conversion (bean, map, and XML are converted to JSON and JSON can be converted back to bean and dynabean)

Source: Internet
Author: User

Examples on the official website

JSON-lib is a Java class package used to convert beans, maps, and XML into JSON and convert JSON back to bean and dynabean.

: Http://json-lib.sourceforge.net/
The third-party package is also required:
Org. Apache. commons (version 3.2 or later)
Org. Apache. oro
Net. SF. ezmorph (ezmorph-1.0.4.jar)
Nu. XOM

1. List

Java code
  1. Boolean[] Boolarray =New Boolean[] {True,False,True};
  2. Jsonarray jsonarray1 = jsonarray. fromobject (boolarray );
  3. System. Out. println (jsonarray1 );
  4. // Prints [true, false, true]
  5. List list =NewArraylist ();
  6. List. Add ("first ");
  7. List. Add ("second ");
  8. Jsonarray jsonarray2 = jsonarray. fromobject (list );
  9. System. Out. println (jsonarray2 );
  10. // Prints ["first", "second"]
  11. Jsonarray jsonarray3 = jsonarray. fromobject ("['json', 'is', 'easy']");
  12. System. Out. println (jsonarray3 );
  13. // Prints ["JSON", "is", "easy"]


2. Map
Java code

  1. Map map =NewHashmap ();
  2. Map. Put ("name", "JSON ");
  3. Map. Put ("bool", Boolean. True );
  4. Map. Put ("int ",NewINTEGER (1 ));
  5. Map. Put ("arr ",NewString [] {"A", "B "}
    );
  6. Map. Put ("func", "function (I) {return this. Arr [I];}");
  7. Jsonobject JSON = jsonobject. fromobject (MAP );
  8. System. Out. println (JSON );
  9. // {"Func": function (I) {return this. arr [I] ;}, "arr": ["A", "B"], "int": 1, "name": "JSON", "bool ": true}


3. Bean
Java code

  1. /**
  2. * Bean. Java
  3. Private string name = "JSON ";
  4. Private int pojoid = 1;
  5. Private char [] Options = new char [] {'A', 'F '};
  6. Private string func1 = "function (I) {return this. Options [I];}";
  7. Private jsonfunction func2 = new jsonfunction (New String [] {"I"}, "return this. Options [I];");
  8. */
  9. Jsonobject = jsonobject. fromobject (NewJsonbean ());
  10. System. Out. println (jsonobject );
  11. // {"Func1": function (I) {return this. options [I];}, "pojoid": 1, "name": "JSON", "options": ["A", "F"], "func2 ": function (I) {return this. options [I] ;}}


4. Beans
Java code

  1. /**
  2. * Private int row;
  3. Private int Col;
  4. Private string value;
  5. *
  6. */
  7. List list =NewArraylist ();
  8. Jsonbean2 jb1 =NewJsonbean2 ();
  9. Jb1.setcol (1 );
  10. Jb1.setrow (1 );
  11. Jb1.setvalue ("XX ");
  12. Jsonbean2 jb2 =NewJsonbean2 ();
  13. Jb2.setcol (2 );
  14. Jb2.setrow (2 );
  15. Jb2.setvalue ("");
  16. List. Add (jb1 );
  17. List. Add (jb2 );
  18. Jsonarray ja = jsonarray. fromobject (list );
  19. System. Out. println (JA. tostring ());
  20. // [{"Value": "XX", "row": 1, "col": 1 },{ "value": "", "row": 2, "col": 2}]


5. string to Bean
Java code

  1. String JSON = "{name = \" JSON \ ", bool: True, INT: 1, double: 2.2, FUNC: function (a) {return a ;}, array: [1, 2]} ";
  2. Jsonobject = jsonobject. fromstring (JSON );
  3. Object bean = jsonobject. tobean (jsonobject );
  4. Assertequals (jsonobject. Get ("name"), propertyutils. getproperty (bean, "name "));
  5. Assertequals (jsonobject. Get ("bool"), propertyutils. getproperty (bean, "bool "));
  6. Assertequals (jsonobject. Get ("int"), propertyutils. getproperty (bean, "int "));
  7. Assertequals (jsonobject. Get ("double"), propertyutils. getproperty (bean, "double "));
  8. Assertequals (jsonobject. Get ("func"), propertyutils. getproperty (bean, "func "));
  9. List expected = jsonarray. tolist (jsonobject. getjsonarray ("array "));
  10. Assertequals (expected, (list) propertyutils. getproperty (bean, "array "));



Java code

  1. String JSON = "{\" value \ ": \" XX \ ", \" Row \ ": 1, \" Col \ ": 1 }";
  2. Jsonobject = jsonobject. fromstring (JSON );
  3. Jsonbean2 bean = (jsonbean2) jsonobject. tobean (jsonobject, jsonbean2.Class);
  4. Assertequals (jsonobject. Get ("col "),NewINTEGER (bean. getcol ()));
  5. Assertequals (jsonobject. Get ("row "),NewINTEGER (bean. getrow ()));
  6. Assertequals (jsonobject. Get ("value"), Bean. getvalue ());

6 JSON to XML
1)
Jsonobject JSON = new jsonobject (true );
String xml = xmlserializer. Write (JSON );

<O class = "object" null = "true">

2)
Jsonobject JSON = jsonobject. fromobject ("{\" Name \ ": \" JSON \ ", \" bool \ ": True, \" int \ ": 1 }");
String xml = xmlserializer. Write (JSON );
<O class = "object">
<Name type = "string"> JSON </Name>
<Bool type = "Boolean"> true </bool>
<Int type = "Number"> 1 </int>
</O>
<O class = "object">
<Name type = "string"> JSON </Name>
<Bool type = "Boolean"> true </bool>
<Int type = "Number"> 1 </int>
</O>
3)
Jsonarray JSON = jsonarray. fromobject ("[1, 2, 3]");
String xml = xmlserializer. Write (JSON );
<A class = "array">
<E type = "Number"> 1 </E>
<E type = "Number"> 2 </E>
<E type = "Number"> 3 </E>
</A>

7. XML to JSON
<A class = "array">
<E type = "function" Params = "I, j">
Return matrix [I] [J];
</E>
</A>
<A class = "array">
<E type = "function" Params = "I, j">
Return matrix [I] [J];
</E>
</A>

Jsonarray JSON = (jsonarray) xmlserializer. Read (XML );
System. Out. println (JSON );
// Prints [function (I, j) {return matrix [I] [J];}]

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