1.后台接收json数组转成封装实体类的List:

package no.integrasco.ingentia.news.qaedition; 
 
public class Person { 
 
    private String name; 
 
    private int age; 
 
    public String getName() { 
 
        return name; 
    } 
 
    public void setName(String name) { 
 
        this.name = name; 
    } 
 
    public int getAge() { 
 
        return age; 
    } 
 
    public void setAge(int age) { 
 
        this.age = age; 
    } 
} 
 
  
 
package no.integrasco.ingentia.news.qaedition; 
 
import java.util.List; 
 
import net.sf.json.JSONArray; 
import net.sf.json.JsonConfig; 
 
public class JsonTest { 
 
    /** 
     * @param args 
     */ 
    public static void main(String[] args) { 
 
        // 转换方法1 
        JSONArray array = JSONArray.fromObject("[{'name':'hehe','age':22}]"); 
        List<Person> list = JSONArray.toList(array, Person.class);// 过时方法 
        System.out.println(list.get(0).getName()); 
 
        // 转换方法2 
        List<?> list2 = JSONArray.toList(array, new Person(), new JsonConfig());//参数1为要转换的JSONArray数据,参数2为要转换的目标数据,即List盛装的数据 
        Person person = (Person) list2.get(0); 
        System.out.println(person.getAge()); 
    } 
 
}

2.从页面接收json格式的数据,在java类里面进行解析

String jsonStr = {"name":"zfj","dd":[{"ddr":"1","encrypt":"2","ff":"1","length":"23","ffe":"editStyled","ill":"1","pkor":"2","name":"zfj","isKey":"2","alias":"ffff"}],"addRelations":[{"type":"2","ld":"zfj","ld":"2"}]};  
 
//将此字符串放在ruquest或者其他的变量里面,传递到后台。  
 
//如放在reques中:  
request.getRequestDispatcher("/geServlet?data="+jsonStr).forward(request,response);  
 
//在servlet或java类里这样接收:  
String json = request.ge[size=large][/size]tParameter("data");  
JSONObject jsonObject = JSONObject.fromObject(data);  
String name = jsonObject.getString(“name”);  
......  
//对于数组这样接收用  
 
JSONArray jan = (JSONArray) jsonObject.get("dd");  
if(jan!=null||jan.size()!=0){  
for(int i=0;i<ja.size();i++){  
JSONObject jo = JSONObject.fromObject(ja.get(i));  
String ff = jo.getString("ff");  
                 ......  
}  
} 
String jsonStr = {"name":"zfj","dd":[{"ddr":"1","encrypt":"2","ff":"1","length":"23","ffe":"editStyled","ill":"1","pkor":"2","name":"zfj","isKey":"2","alias":"ffff"}],"addRelations":[{"type":"2","ld":"zfj","ld":"2"}]};  
 
//将此字符串放在ruquest或者其他的变量里面,传递到后台。  
 
//如放在reques中:  
request.getRequestDispatcher("/geServlet?data="+jsonStr).forward(request,response);  
 
//在servlet或java类里这样接收:  
String json = request.getParameter("data");  
JSONObject jsonObject = JSONObject.fromObject(data);  
String name = jsonObject.getString(“name”);  
......  
//对于数组这样接收用  
 
JSONArray jan = (JSONArray) jsonObject.get("dd");  
if(jan!=null||jan.size()!=0){  
for(int i=0;i<ja.size();i++){  
JSONObject jo = JSONObject.fromObject(ja.get(i));  
String ff = jo.getString("ff");  
                 ......  
}  
} 

 

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