JSON--List集合转换成JSON对象详解

 List<Article> al = articleMng.find(f);
   System.out.println(al.size());
   HttpServletResponse hsr = ServletActionContext.getResponse();
   if(null == al){
    return ;
   }
   for(Article a : al){
    System.out.println(a.getId()+a.getDescription()+a.getTitle());
   }
   JSONArray json = new JSONArray();
   for(Article a : al){
    JSONObject jo = new JSONObject();
    jo.put("id", a.getId());
    jo.put("title", a.getTitle());
    jo.put("desc", a.getDescription());
    json.put(jo);
   }
   try {
    System.out.println(json.toString());
    hsr.setCharacterEncoding("UTF-8");
    hsr.getWriter().write(json.toString());
   } catch (IOException e) {
    e.printStackTrace();
   }

<many-to-one name="cmsent" column="comment_tid" class="com.fcms.cms.entity.CmsComment" 
  not-null="false" cascade="delete">

JsonConfig config = new JsonConfig();
  config.setJsonPropertyFilter(new PropertyFilter() {
   public boolean apply(Object arg0, String arg1, Object arg2) {
     if (arg1.equals("article") ||arg1.equals("fans")) {
      return true;
     } else {
      return false;
     }
   }
  });

<!-- 配置话题和团体之间的关系 -->
  <many-to-one name="article" class="com.fcms.nubb.article" column="article_id"/>
  
  <!-- 配置主题帖与回复的帖子之间的关系 -->
  <set name="subMessages" table="sub_message" inverse="true" cascade="all" lazy="false" order-by="date asc">
   <key column="theme_id" />
   <one-to-many class="bbs.po.SubMessage" />
  </set>

package com.nubb.bean;

import java.io.Serializable;

public class Person implements Serializable{
 private static final long serialVersionUID = 1L;
 private String name;
 private int age;
 private String address;
 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;
 }
 public String getAddress() {
  return address;
 }
 public void setAddress(String address) {
  this.address = address;
 }
 
 
}

package com.nubb.test;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.ArrayList;
import java.util.List;

import com.alibaba.fastjson.JSON;
import com.nubb.bean.Person;


public class JSONSerializer {
  private static final String DEFAULT_CHARSET_NAME = "UTF-8";

  public static <T> String serialize(T object) {
   return JSON.toJSONString(object);
  }

  public static <T> T deserialize(String string, Class<T> clz) {
   return JSON.parseObject(string, clz);
  }

  public static <T> T load(Path path, Class<T> clz) throws IOException {
   return deserialize(
     new String(Files.readAllBytes(path), DEFAULT_CHARSET_NAME), clz);
  }

  public static <T> void save(Path path, T object) throws IOException {
   if (Files.notExists(path.getParent())) {
    Files.createDirectories(path.getParent());
   }
   Files.write(path,
     serialize(object).getBytes(DEFAULT_CHARSET_NAME),
     StandardOpenOption.WRITE,
     StandardOpenOption.CREATE,
     StandardOpenOption.TRUNCATE_EXISTING);
  }
  
  public static void main(String[] args) {
   Person person1 = new Person();
   person1.setAddress("address");
   person1.setAge(11);
   person1.setName("amao");
   
   Person person2 = new Person();
   person2.setAddress("address");
   person2.setAge(11);
   person2.setName("amao");
   
   List<Person> lp = new ArrayList<Person>();
   lp.add(person1);
   lp.add(person2);
   System.out.println(serialize(lp));
  }
  
}