package com.chauvet.utils.json; import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.List; import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.xml.XMLSerializer; import org.apache.commons.lang.StringUtils; import com.google.gson.Gson;
import com.google.gson.GsonBuilder; public class JsonUtils {
private final static Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create();
private static XMLSerializer xmlserializer = new XMLSerializer(); public static Gson getInstance(){
return gson;
} /***
* List 转为 JSON
* @param list
* @return
*/
public static <T> String list2Json(List<T> list) {
if(null != list && list.size() > 0){
JSONArray jsonArray = JSONArray.fromObject(list);
return jsonArray.toString();
}
return "";
} /***
* JSON 转换为 List
* @param jsonStr
* [{"age":12,"createTime":null,"id":"","name":"wxw","registerTime":null,"sex":1},{...}]
* @param objectClass
* @return
*/
@SuppressWarnings("unchecked")
public static <T> List<T> json2List(String jsonStr, Class<T> objectClass){
if (StringUtils.isNotBlank(jsonStr)) {
JSONArray jsonArray = JSONArray.fromObject(jsonStr);
List<T> list = (List<T>) JSONArray.toCollection(jsonArray, objectClass);
return list;
}
return null;
} /***
* Object 转为 JSON
* @param object
* @return
*/
public static String object2Json(Object object) {
if(null != object){
JSONArray jsonArray = JSONArray.fromObject(object);
return jsonArray.toString();
}
return "";
} /***
*
* JSON 转 Object
*
* @param jsonStr
* [{"age":12,"createTime":null,"id":"","name":"wxw","registerTime":null,"sex":1}]
* @param objectClass
* @return
*/
@SuppressWarnings("unchecked")
public static <T> T json2Ojbect(String jsonStr, Class<T> objectClass){
if(null != jsonStr){
String leftStr = jsonStr.substring(0,2);
String rightStr = jsonStr.substring(jsonStr.length()-2,jsonStr.length());
if(leftStr.equals("[{")){
jsonStr = jsonStr.substring(1,jsonStr.length());
}
if(rightStr.equals("}]")){
jsonStr = jsonStr.substring(0,jsonStr.length()-1);
}
JSONObject jsonStu = JSONObject.fromObject(jsonStr);
return (T) JSONObject.toBean(jsonStu,objectClass);
}
return null;
} /***
* JsonArray 转为 JSON
* @param jsonArray
* @return
*/
public static String jsonArrayToJSONString(JSONArray jsonArray) {
if(null != jsonArray){
return jsonArray.toString();
}
return "";
} /***
* JsonObject 转为 JSON
* @param jsonObject
* @return
*/
public static String jsonObjectToJSONString(JSONObject jsonObject) {
if(null != jsonObject){
return jsonObject.toString();
}
return "";
} /***
* 将Object转换为JsonObject
* @param object
* @return
*/
public static JSONObject object2JsonObject(Object object) {
if(null != object){
return JSONObject.fromObject(object);
}
return null;
} /***
* XML 转为 JSON
* @param xmlString
* XML字符串 例如：
* <?xml version='1.0' encoding='utf-8'?><cities><province name='北京'><item>东城区</item><item>西城区</item><item>崇文区</item><item>宣武区</item><item>朝阳区</item><item>丰台区</item><item>石景山区</item><item>海淀区</item><item>门头沟区</item><item>房山区</item><item>通州区</item><item>顺义区</item><item>昌平区</item><item>大兴区</item><item>怀柔区</item><item>平谷区</item><item>密云县</item><item>延庆县</item></province></cities>
* @return
*
*/
public static String xml2json(String xmlString){
if(StringUtils.isNotBlank(xmlString)){
try {
return xmlserializer.read(xmlString).toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
return null;
} /***
* JSON 转为 XML
* @param xmlString
* XML字符串 例如：
* [{'province':{'@name':'北京','item':['东城区','西城区','崇文区','宣武区','朝阳区','丰台区','石景山区','海淀区','门头沟区','房山区','通州区','顺义区','昌平区','大兴区','怀柔区','平谷区','密云县','延庆县']}}]
* 或者：
* {'province':{'@name':'北京','item':['东城区','西城区','崇文区','宣武区','朝阳区','丰台区','石景山区','海淀区','门头沟区','房山区','通州区','顺义区','昌平区','大兴区','怀柔区','平谷区','密云县','延庆县']}}
* @return
*
*/
public static String json2xml(String jsonStr){
if(StringUtils.isNotBlank(jsonStr)){
try {
if(jsonStr.contains("[{") && jsonStr.contains("}]")){
JSONArray jobj = JSONArray.fromObject(jsonStr);
return xmlserializer.write(jobj);
}
JSONObject jobj = JSONObject.fromObject(jsonStr);
return xmlserializer.write(jobj);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
return null;
} /***
* XML/JSON 互转
*
* @param sourceFilePath
* 要解析的文件路径
* @param directFilePath
* 生成文件存放的路径
* @param flag
* true:JSON 转为 XML
* false:XML转为 JSON
* @return
*/
public static String xml2JsonOrjson2Xml(String sourceFilePath,String directFilePath,boolean flag){
if(StringUtils.isBlank(sourceFilePath) || StringUtils.isBlank(directFilePath)){
return null;
}
FileInputStream in =null;
BufferedReader br = null;
FileWriter fw = null;
String rs = null;
try{
File jsonFile = new File(sourceFilePath);
in = new FileInputStream(jsonFile);
StringBuffer sbuf = new StringBuffer();
br = new BufferedReader(new InputStreamReader(in));
String temp =null; while((temp=br.readLine())!=null){
sbuf.append(temp);
}
if(flag){
rs = json2xml(sbuf.toString());
}else{
rs = xml2json(sbuf.toString());
}
File test = new File(directFilePath);
if(!test.exists()){
test.createNewFile();
}
fw = new FileWriter(test);
fw.write(rs);
}catch (Exception e) {
e.printStackTrace();
}finally{
try {
fw.close();
br.close();
in.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return rs;
} public static void main(String[] args) { // System.out.println(jfxfTranspose("E:/qwe.json", "E:/qwe.xml", 1)); // System.out.println(json2xml("[{'province':{'@name':'北京','item':['东城区','西城区','崇文区','宣武区','朝阳区','丰台区','石景山区','海淀区','门头沟区','房山区','通州区','顺义区','昌平区','大兴区','怀柔区','平谷区','密云县','延庆县']}}]"));
// System.out.println(xml2json("<?xml version='1.0' encoding='utf-8'?><cities><province name='北京'><item>东城区</item><item>西城区</item><item>崇文区</item><item>宣武区</item><item>朝阳区</item><item>丰台区</item><item>石景山区</item><item>海淀区</item><item>门头沟区</item><item>房山区</item><item>通州区</item><item>顺义区</item><item>昌平区</item><item>大兴区</item><item>怀柔区</item><item>平谷区</item><item>密云县</item><item>延庆县</item></province></cities>")); /*User u = new User();
u.setName("wxw");
u.setAge(12);
u.setSex(1);
System.out.println(object2JsonObject(u));*/ /*User u = new User();
u.setName("wxw");
u.setAge(12);
u.setSex(1);
System.out.println(object2Json(u));*/ /*User us = json2Ojbect(object2Json(u), User.class);
System.out.println(us);
*/ /*List<User> list = new ArrayList<User>();
User u = new User();
u.setName("wxw");
u.setAge(12);
u.setSex(1);
list.add(u);
u = new User();
u.setName("zmx");
u.setAge(12);
u.setSex(0);
list.add(u);
u = new User();
u.setName("arnold");
u.setAge(12);
u.setSex(1);
list.add(u);
String str = list2Json(list);
System.out.println(str);*/ /*List<User> userList = converAnswerFormString(str, User.class);
System.out.println(userList);
*/ }
}