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看到網(wǎng)上有人用jason-lib這個(gè)庫(kù)，我就選擇了它！開(kāi)始學(xué)習(xí)的時(shí)候碰到了一些問(wèn)題，但只要按照要求配置好下面四個(gè)依賴庫(kù)就可以寫測(cè)試代碼了。
jakarta commons-lang 2.3
jakarta commons-beanutils 1.7.0
jakarta commons-collections 3.2
jakarta commons-logging 1.1.1
ezmorph 1.0.4
然后按照網(wǎng)站上的getting started進(jìn)行學(xué)習(xí)，碰到的第一個(gè)問(wèn)題就是在處理bean的轉(zhuǎn)換的時(shí)候總是報(bào)告"has no getter method"，找了好久才知道，
錯(cuò)誤的原因是要轉(zhuǎn)換的bean必須是public的。
下面是我找到的學(xué)習(xí)資料：
相關(guān)鏈接:
http://json-lib./
http://ezmorph./
http://morph./
使用過(guò)程中問(wèn)題:
1,把bean轉(zhuǎn)化為json格式時(shí)老提示如下錯(cuò)誤:
Exception in thread "main" net.sf.json.JSONException: java.lang.NoSuchMethodException: Property 'name' has no getter method
解決:聲明bean為public class xxx,必須是public,我用默認(rèn)類型(class xxx)都不行
2,Exception in thread "main" java.lang.NoSuchMethodError: org.apache.commons.lang.ArrayUtils.toObject([C)[Ljava/lang/Character;
原因:定義屬性如下:private char[] options = new char[] { 'a', 'f' };好像不能處理這種類型的
3, private String func1 = "function(i){ return this.options[i]; }";
和
private JSONFunction func2 = new JSONFunction(new String[] { "i" },
"return this.options[i];");
轉(zhuǎn)換后顯示結(jié)果差不多:
{"func1":function(i){ return this.options[i];,"func2":function(i){ return this.options[i]; }}
測(cè)試類:
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.List;
- import java.util.Map;
-
- import net.sf.json.JSONArray;
- import net.sf.json.JSONObject;
-
- public class Json {
- public static void main(String[] args) {
- Json j = new Json();
- j.bean2json();
- }
-
- public void arr2json() {
- boolean[] boolArray = new boolean[] { true, false, true };
- JSONArray jsonArray = JSONArray.fromObject(boolArray);
- System.out.println(jsonArray);
-
- }
-
- public void list2json() {
- List list = new ArrayList();
- list.add("first");
- list.add("second");
- JSONArray jsonArray = JSONArray.fromObject(list);
- System.out.println(jsonArray);
-
- }
-
- public void createJson() {
- JSONArray jsonArray = JSONArray.fromObject("['json','is','easy']");
- System.out.println(jsonArray);
-
- }
-
- public void map2json() {
- Map
- map.put("name", "json");
- map.put("bool", Boolean.TRUE);
- map.put("int", new Integer(1));
- map.put("arr", new String[] { "a", "b" });
- map.put("func", "function(i){ return this.arr[i]; }");
-
- JSONObject json = JSONObject.fromObject(map);
- System.out.println(json);
-
-
-
- }
-
- public void bean2json() {
- JSONObject jsonObject = JSONObject.fromObject(new MyBean());
- System.out.println(jsonObject);
-
-
-
-
-
-
- }
-
- public void json2bean() {
- String json = "{name=\"json2\",func1:true,pojoId:1,func2:function(a){ return a; },options:['1','2']}";
- JSONObject jb = JSONObject.fromString(json);
- JSONObject.toBean(jb, MyBean.class);
- System.out.println();
- }
- }
操作的bean:
- import net.sf.json.JSONFunction;
-
- public class MyBean {
- private String name = "json";
- private int pojoId = 1;
-
- private String func1 = "function(i){ return this.options[i]; }";
- private JSONFunction func2 = new JSONFunction(new String[] { "i" },
- "return this.options[i];");
-
-
- ......
- }
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