package asi;import java.util.ArrayList;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONException;import com.alibaba.fastjson.JSONObject;public class TestJSONObject { private String name; private String sex;  public String getName() {  return name; } public void setName(String name) {  this.name = name; } public String getSex() {  return sex; } public void setSex(String sex) {  this.sex = sex; }  //json字符串转化为JSONObject类 public static JSONObject JSON2Object(String json){  JSONObject object=(JSONObject) JSONObject.parseObject(json);  return object; } //json的list转化为ArrayList
     
       public static ArrayList
      
        JSONList2Object(String jsonList){  ArrayList
       
         objectList=(ArrayList
        
         ) JSONObject.parseObject(jsonList,ArrayList.class);  return objectList; }  //object转化为json public static String Object2JSON(Object o){  return JSON.toJSONString(o);   }  public static void main(String[] args) {    String json="{\"username\": \"Bonnie\",\"listData\": [{\"address\": \"石景山区\",\"street\": \"裕华路\"},{\"address\": \"海淀区\",\"street\": \"中山路\"}]}";  try{   //1、测试json转换成object   JSONObject object=JSON2Object(json);   String username=(String) object.get("username");   System.out.println(username);      String listData=String.valueOf(object.get("listData"));     //(String) object.get("listData");   System.out.println(listData);      ArrayList
         
           objectList=JSONList2Object(listData);    for(int i=0;i
         
        
       
      
     

注意要导入jar:

<dependency>

   <groupId>com.alibaba</groupId>

   <artifactId>fastjson</artifactId>

   <version>1.2.2</version>

  </dependency>