将字符串转换成json格式

1.引入json依赖,在pom.xml文件里添加如下内容

 1 <!--Json array start -->
 2         <dependency>
 3             <groupId>commons-beanutils</groupId>
 4             <artifactId>commons-beanutils</artifactId>
 5             <version>1.7.0</version>
 6         </dependency>
 7         <dependency>
 8             <groupId>commons-collections</groupId>
 9             <artifactId>commons-collections</artifactId>
10             <version>3.1</version>
11         </dependency>
12         <dependency>
13             <groupId>commons-lang</groupId>
14             <artifactId>commons-lang</artifactId>
15             <version>2.5</version>
16         </dependency>
17         <dependency>
18             <groupId>net.sf.ezmorph</groupId>
19             <artifactId>ezmorph</artifactId>
20             <version>1.0.3</version>
21         </dependency>
22         <dependency>
23             <groupId>net.sf.json-lib</groupId>
24             <artifactId>json-lib</artifactId>
25             <version>2.4</version>
26             <classifier>jdk15</classifier>
27         </dependency>
28         <!--Json array end -->

2.List集合转换成json代码

1     List list = new ArrayList();
2     list.add( "first" );
3     list.add( "second" );
4     JSONArray jsonArray2 = JSONArray.fromObject( list );

3. Map集合转换成json代码

1     Map map = new HashMap();
2     map.put("name", "json");
3     map.put("bool", Boolean.TRUE);
4     map.put("int", new Integer(1));
5     map.put("arr", new String[] { "a", "b" });
6     map.put("func", "function(i){ return this.arr[i]; }");
7     JSONObject json = JSONObject.fromObject(map);

4.Bean转换成json代码

1 JSONObject jsonObject = JSONObject.fromObject(new JsonBean());

5.数组转换成json代码

1     boolean[] boolArray = new boolean[] { true, false, true };
2     JSONArray jsonArray1 = JSONArray.fromObject(boolArray);

6.一般数据转换成json代码

1 JSONArray jsonArray3 = JSONArray.fromObject("['json','is','easy']" );

7.beans转换成json代码

 1     List list = new ArrayList();
 2     JsonBean2 jb1 = new JsonBean2();
 3     jb1.setCol(1);
 4     jb1.setRow(1);
 5     jb1.setValue("xx");
 6     JsonBean2 jb2 = new JsonBean2();
 7     jb2.setCol(2);
 8     jb2.setRow(2);
 9     jb2.setValue("");
10     list.add(jb1);
11     list.add(jb2);
12     JSONArray ja = JSONArray.fromObject(list);