将字符串转换成json格式

时间：2023-03-09 16:03:40
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

 <!--Json array start -->

         <dependency>

             <groupId>commons-beanutils</groupId>

             <artifactId>commons-beanutils</artifactId>

             <version>1.7.0</version>

         </dependency>

         <dependency>

             <groupId>commons-collections</groupId>

             <artifactId>commons-collections</artifactId>

             <version>3.1</version>

         </dependency>

         <dependency>

             <groupId>commons-lang</groupId>

             <artifactId>commons-lang</artifactId>

             <version>2.5</version>

         </dependency>

         <dependency>

             <groupId>net.sf.ezmorph</groupId>

             <artifactId>ezmorph</artifactId>

             <version>1.0.3</version>

         </dependency>

         <dependency>

             <groupId>net.sf.json-lib</groupId>

             <artifactId>json-lib</artifactId>

             <version>2.4</version>

             <classifier>jdk15</classifier>

         </dependency>

         <!--Json array end -->

2.List集合转换成json代码

     List list = new ArrayList();

     list.add( "first" );

     list.add( "second" );

     JSONArray jsonArray2 = JSONArray.fromObject( list );

3. Map集合转换成json代码

     Map map = new HashMap();

     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);

4.Bean转换成json代码

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

5.数组转换成json代码

     boolean[] boolArray = new boolean[] { true, false, true };

     JSONArray jsonArray1 = JSONArray.fromObject(boolArray);

6.一般数据转换成json代码

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

7.beans转换成json代码

     List list = new ArrayList();

     JsonBean2 jb1 = new JsonBean2();

     jb1.setCol(1);

     jb1.setRow(1);

     jb1.setValue("xx");

     JsonBean2 jb2 = new JsonBean2();

     jb2.setCol(2);

     jb2.setRow(2);

     jb2.setValue("");

     list.add(jb1);

     list.add(jb2);

     JSONArray ja = JSONArray.fromObject(list);

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