我在写subscriptionEvent接口时，使用的解析post json内容时，使用的是org.codehaus.jackson来解析的：

接收的post json请求体：
{subscriptionEvents:[{"subscriptionTier":"DELETE","startDate":null,"transactionId":"1111111","paymentType":null,"expiryDate":null,"userId":"111111111111111111111","countryCode":"CN","serviceCode":null},{"subscriptionTier":"DELETE","startDate":null,"transactionId":"222222222222222222","paymentType":null,"expiryDate":null,"userId":"2222222222222222222","countryCode":"CN","serviceCode":null},{"subscriptionTier":"DELETE","startDate":null,"transactionId":"3333333333","paymentType":null,"expiryDate":null,"userId":"333333333333333333333333","countryCode":"CN","serviceCode":null}]}

import java.io.ByteArrayOutputStream;

import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
//request---json串
public static String getStreamString(HttpServletRequest request) {
		final int BUFFER_SIZE = 8 * 1024;
		
		String s = null;
		byte[] buffer = new byte[BUFFER_SIZE];
		try {
			ServletInputStream inputStream = request.getInputStream();
			int length = 0;
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			do {
				length = inputStream.read(buffer);
				if (length > 0) {
					baos.write(buffer, 0, length);
				}
			} while (length * 2 == BUFFER_SIZE);

			s = new String(baos.toByteArray());
		} catch (Exception e) {
			s=null;
			log.error("while get string values from inputstream,Exception!!!");
			e.printStackTrace();
			
		}
		return s;
	}

处理json的操作方法：

String bodyData = getStreamString(request);//得到json字符串

package com.ultimate.ws.util;


import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.log4j.Logger;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.ObjectMapper;


import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import com.ultimate.ws.pojo.Subscriptionevent;


public static List<Subscriptionevent> getSubscriptionEvent(String jsonData) {
		JsonNode root;
		List<Subscriptionevent> tempList = null;
		
		/*jsonData ="{\"subscriptionEvent\":"+ "["+ "{"+
				  "\"userId\":\"sdffgw3rsh\","+ "\"countryCode\":\"AU\","+
				  "\"subscriptionTier\": \"PREMIUM-12-25 13:29:01\","+
				  "\"paymentType\": \"VOUCHER\","+
				  "\"startDate\": \"2015-03-29 13:29:31\","+
				  "\"expiryDate\": \"2015-04-29 23:11:01\","+
				  "\"transactionId\": \"20139630776768\""+
				   
				  "},"+ "{"+ "\"userId\":\"sdffgw3rsh\","+ "\"countryCode\":\"AU\","+
				   "\"subscriptionTier\": \"PREMIUM-12-25 13:29:01\","+
				  "\"paymentType\": \"VOUCHER\","+
				  "\"startDate\": \"2015-03-29 13:29:31\","+
				  "\"expiryDate\": \"2015-04-29 23:11:01\","+
				  "\"transactionId\": \"20139630776768\""+ "}]}";*/
Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create();
	
		try {
			root = mapper.readTree(jsonData);
			JsonNode data = root.path("subscriptionEvents");
			Iterator<JsonNode> it = data.iterator();
			tempList = new ArrayList<Subscriptionevent>();
			Date date = new Date();
			while (it.hasNext()) {
				// flag = true;
				// JsonNode node = it.next();
//这里使用了Gson 类来转换为定义类
Subscriptionevent t = (Subscriptionevent)  = gson.fromJson(it.next().toString(), Subscriptionevent.class);
				
				tempList.add(t);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} 
		if (tempList!=null&&tempList.size() > 0) {
			return tempList;
		}
		return null;
	}

总结：

在使用过程中，当调用时传递的数组内容达到一定限度后，就会被截断，报错内容是解析格式异常。正常传递参数时，不会往这个json数组中传递多个对象，一般是一个，所以没有问题，但当大批量操作时，一次调用就不行，还要将这个数组拆分成多个，多次调用才行，具体这个限制长度应该是这个json处理类内部做了设置，我没有具体去查或者去设置