多层嵌套的Json字符串转成JavaBean实体对象_嵌套json 转换 javabean-优快云博客

本文链接：https://blog.youkuaiyun.com/huling2361/article/details/38842449

本文介绍了一种方法，用于将包含多层嵌套结构的Json字符串转换为对应的JavaBean实体对象，具体包括RouterBusiness、MRPersistent和MsgProxyPersistent三个类。

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多层嵌套Json字符串转换为JavaBean。

   JavaBean1

public class RouterBusiness extends BaseBusiness {
	private static final long serialVersionUID = 1l;
	
	// 路由表示
	private String routerId;
	
	// 发送者队列
	private List<MRPersistent> sender = new ArrayList<MRPersistent>();
	
	// 接收者队列
	private List<MRPersistent> receiver = new ArrayList<MRPersistent>();

.........
get（）和 set（）方法略去

}

JavaBean2

public class MRPersistent{

	// sender name（receiver name）
	private String name;
	
	// 消息代理
	private MsgProxyPersistent msgProxy;
	
	// 类型
	private String type;

          .....get 、set方法
}

   JavaBean3

 <pre class="java" name="code">public class MsgProxyPersistent {
	

	// 解析器
	private String parse;
	
	// 适配器
	private String decorator;
	
	// 过滤器
	private String filter;

.........get  set方法

下面是将符合嵌套结构的Json字符串转换为JavaBean实体对象
  <pre class="java" name="code">	public RouterBusiness convertToBean(String jsonString){
		try {
			// 将json字符串转换为Router实体
			List routers = (List)JSONArray.toCollection(JSONArray.fromObject(jsonString));
			RouterBusiness rb = new RouterBusiness();
			for(Object router : routers){
				 rb = (RouterBusiness)JSONObject.toBean(JSONObject.fromObject(router),RouterBusiness.class);
				 List listReceiver = (List)rb.getReceiver();
				 List listSender = (List)rb.getSender();
				 List<MRPersistent> receivers = new  ArrayList<MRPersistent>();
				 List<MRPersistent> senders = new ArrayList<MRPersistent>() ;
				 for (Object sender : listSender) {
				     MRPersistent mrPersistent = (MRPersistent)JSONObject.toBean(JSONObject.fromObject(sender),MRPersistent.class);		
						MsgProxyPersistent msgProxyPersistent = (MsgProxyPersistent)JSONObject.toBean(JSONObject.fromObject(mrPersistent.getMsgProxy()),MsgProxyPersistent.class);						
						mrPersistent.setMsgProxy(msgProxyPersistent);;
						senders.add(mrPersistent);	
					}
				 
				 for(Object receiver : listReceiver){
					MRPersistent mrPersistent  = (MRPersistent)JSONObject.toBean(JSONObject.fromObject(receiver),MRPersistent.class);
					MsgProxyPersistent msgProxyPersistent = (MsgProxyPersistent)JSONObject.toBean(JSONObject.fromObject(mrPersistent.getMsgProxy()),MsgProxyPersistent.class);				
					mrPersistent.setMsgProxy(msgProxyPersistent);
					receivers.add(mrPersistent);
				 }
				 
				 rb.setReceiver(receivers);
				 rb.setSender(senders);
			}		
			return rb;
		} catch (Exception ex) {
			Log.error("convertToBean", ex, MonitorService.class);
			return null;
		}
	}