框架：Jackson

先贴个数据接口传递过来的数据，guideMachineLocations后面的集合都是一样的，火狐格式化json数据插件：JSON Lite。

先判断数据类型，是单个对象，多个对象还是单个对象内嵌多个对象集合，对应要采用不同的方法进行接收和处理，否则会出错。

这个明显是单个对象，内嵌多个对象集合，可采用转换为实体对象的方式处理（我这里的示例是转化为实体对象，还有其他一堆方法自行度娘）：

代码1-测试类：

package com.thinkgem.jeesite.common.test; import java.io.InputStream; import java.net.URL; import java.net.URLConnection; import com.fasterxml.jackson.databind.ObjectMapper; import com.thinkgem.jeesite.common.mapper.JsonMapper; import com.thinkgem.jeesite.common.utils.StreamUtils; public class SkylineHttpAcceptTest { public static void main(String[] args) throws Exception { ObjectMapper objectMapper = new ObjectMapper(); String urlStr = "链接"; URL url = new URL(urlStr); URLConnection conn = url.openConnection(); conn.connect(); InputStream is = conn.getInputStream(); String inStr = StreamUtils.InputStreamTOString(is); System.out.println(inStr); is.close(); HotPoint acc = objectMapper.readValue(inStr, HotPoint.class); System.out.println(acc); } }

代码2-对象类：

package com.thinkgem.jeesite.common.test; import java.util.List; public class HotPoint { private int operationOrgId; private String operationOrgName; private String centerLongitude; private String centerLatitude; private int rangeRadius; private List<GuideMachineLocationsBean> guideMachineLocations; public int getOperationOrgId() { return operationOrgId; } public void setOperationOrgId(int operationOrgId) { this.operationOrgId = operationOrgId; } public String getOperationOrgName() { return operationOrgName; } public void setOperationOrgName(String operationOrgName) { this.operationOrgName = operationOrgName; } public String getCenterLongitude() { return centerLongitude; } public void setCenterLongitude(String centerLongitude) { this.centerLongitude = centerLongitude; } public String getCenterLatitude() { return centerLatitude; } public void setCenterLatitude(String centerLatitude) { this.centerLatitude = centerLatitude; } public int getRangeRadius() { return rangeRadius; } public void setRangeRadius(int rangeRadius) { this.rangeRadius = rangeRadius; } public List<GuideMachineLocationsBean> getGuideMachineLocations() { return guideMachineLocations; } public void setGuideMachineLocations( List<GuideMachineLocationsBean> guideMachineLocations) { this.guideMachineLocations = guideMachineLocations; } public static class GuideMachineLocationsBean { private String _id; private String did; private String udate; private String ip; private int status; private LocBean loc; public String get_id() { return _id; } public void set_id(String _id) { this._id = _id; } public String getDid() { return did; } public void setDid(String did) { this.did = did; } public String getUdate() { return udate; } public void setUdate(String udate) { this.udate = udate; } public String getIp() { return ip; } public void setIp(String ip) { this.ip = ip; } public int getStatus() { return status; } public void setStatus(int status) { this.status = status; } public LocBean getLoc() { return loc; } public void setLoc(LocBean loc) { this.loc = loc; } public static class LocBean { private double longitude; private double latitude; public double getLongitude() { return longitude; } public void setLongitude(double longitude) { this.longitude = longitude; } public double getLatitude() { return latitude; } public void setLatitude(double latitude) { this.latitude = latitude; } } } }

常见问题：

一般为判断数据格式错误，把单个对象混淆为多个对象，使用了错误的转换方法。