com.taobao.api.internal.parser.json.JsonConverter Maven / Gradle / Ivy
package com.taobao.api.internal.parser.json;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import com.taobao.api.ApiException;
import com.taobao.api.internal.mapping.Converter;
import com.taobao.api.internal.mapping.Converters;
import com.taobao.api.internal.mapping.Reader;
import com.taobao.api.internal.util.json.ExceptionErrorListener;
import com.taobao.api.internal.util.json.JSONReader;
import com.taobao.api.internal.util.json.JSONValidatingReader;
/**
* JSON格式转换器。
*
* @author carver.gu
* @since 1.0, Apr 11, 2010
*/
public class JsonConverter implements Converter {
public T toResponse(String rsp, Class clazz) throws ApiException {
JSONReader reader = new JSONValidatingReader(new ExceptionErrorListener());
Object rootObj = reader.read(rsp);
if (rootObj instanceof Map) {
Map rootJson = (Map) rootObj;
Collection values = rootJson.values();
for (Object rspObj : values) {
if (rspObj instanceof Map) {
Map rspJson = (Map) rspObj;
return fromJson(rspJson, clazz);
}
}
}
return null;
}
/**
* 把JSON格式的数据转换为对象。
*
* @param 泛型领域对象
* @param json JSON格式的数据
* @param clazz 泛型领域类型
* @return 领域对象
*/
public T fromJson(final Map json, Class clazz) throws ApiException {
return Converters.convert(clazz, new Reader() {
public boolean hasReturnField(Object name) {
return json.containsKey(name);
}
public Object getPrimitiveObject(Object name) {
return json.get(name);
}
public Object getObject(Object name, Class type) throws ApiException {
Object tmp = json.get(name);
if (tmp instanceof Map) {
Map map = (Map) tmp;
return fromJson(map, type);
} else {
return tmp;
}
}
public List getListObjects(Object listName, Object itemName, Class subType) throws ApiException {
List