package com.shlanbao.tzsc.utils.tools;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.util.Map;
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import net.sf.json.JSONArray;
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import net.sf.json.JSONObject;
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import net.sf.json.JsonConfig;
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import net.sf.json.util.PropertyFilter;
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import org.apache.log4j.Logger;
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/**
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* JSON本身已经有很多方法,例如
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*<br> jsonStr ="{intCount:30,strDesc:"DESC",objUser:{...},arrUsers:[{},{}]}"
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*<br> JSONObject jsonObject =JSONObject.fromObject(jsonStr);
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*<br> jsonObject.getInt("intCount");
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*<br> jsonObject.getString("strDesc");
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*<br> jsonObject.getJSONObject("objUser");
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*<br> jsonObject.getJSONArray("arrUsers");
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*
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* @author adam.sun
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*/
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public class JSONUtil {
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private static final Logger log = Logger.getLogger(JSONUtil.class);
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/**
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* 把JSONArray形式的数组转为javabean对象数组
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* @param reqString 输入的字符串形式[{},{},{}]
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* @param clazz javabeean的类名
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* @return Object 需要转变为自己的类型
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*/
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@SuppressWarnings("unchecked")
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public static Object JSONString2ObjectArray(String reqString,Class clazz) {
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//String 到 JSONObject
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JSONArray ja =JSONArray.fromObject(reqString);
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//JSONObject 到 Bean
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return JSONArray.toArray(ja, clazz);
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}
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/**
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* 把JSONObject形式的数组转为javabean对象
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* @param reqString 输入的字符串形式{}
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* @param clazz javabeean的类名
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* @return Object 需要转变为自己的类型
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*/
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@SuppressWarnings("unchecked")
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public static Object JSONString2Bean(String reqString,Class clazz) {
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//String 到 JSONObject
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JSONObject ja =JSONObject.fromObject(reqString);
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//JSONObject 到 Bean
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return JSONObject.toBean(ja, clazz);
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}
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/**
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*从requeets里取得变量参数
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* @param reader requet.getReader();
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* @throws IOException
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*/
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public static JSONObject getRequestJSONObject(BufferedReader reader) throws IOException {
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StringBuffer jb = new StringBuffer();
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String line = null;
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while ((line = reader.readLine()) != null) {
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jb.append(line);
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}
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return JSONObject.fromObject(jb.toString());
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}
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/**
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* 把对象中的部分属性剔出掉，比如关联的一个对象 eg:
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* <br>Object yourObject=.......;
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* <br>String[] kickProperties = {"userName","userCode"}; //不需要转换的字段
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<br>JsonConfig config = JSONUtil.kickProperty(kickProperties, TSysUser.class);
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<br>String string = JSONObject.fromObject(yourObject,config).toString();
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<br>OR
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<br>List string = JSONArray.fromObject(yourObject,config).toString();
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* @param kickProperties 需要剔出的属性列表
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* @param Class clazz javaBean 的类名
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* @return JsonConfig
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*/
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@SuppressWarnings("unchecked")
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public static JsonConfig kickProperty(final String[] kickProperties,Class clazz) {
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if(kickProperties== null){
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return null;
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}
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JsonConfig jsonConfig = new JsonConfig();
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jsonConfig.setRootClass( clazz );
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jsonConfig.setJsonPropertyFilter(new PropertyFilter(){
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public boolean apply( Object source, String name, Object value )
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{
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for (int i = 0; i < kickProperties.length; i++) {
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if( kickProperties[i].equalsIgnoreCase( name ) ){
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//log.debug(" Your kill property is"+name);
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return true;
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}
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}
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return false;
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}
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});
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return jsonConfig;
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}
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/**
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* 把对象中的部分属性剔出掉，比如关联的一个对象(仅仅去掉指定类的属性) eg:
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* <br>Object yourObject=.......;
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* <br>String[] kickProperties = {"userName","userCode"}; //不需要转换的字段
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<br>JsonConfig config = JSONUtil.kickProperty(kickProperties, TSysUser.class.getName());
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<br>String string = JSONObject.fromObject(yourObject,config).toString();
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<br>OR
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<br>List string = JSONArray.fromObject(yourObject,config).toString();
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* @param kickProperties 需要剔出的属性列表
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* @param Class clazz javaBean 的类名
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* @return JsonConfig
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*/
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@SuppressWarnings("unchecked")
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public static JsonConfig kickProperty(final String[] kickProperties,final String className) {
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if(kickProperties== null){
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return null;
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}
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JsonConfig jsonConfig = new JsonConfig();
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jsonConfig.setJsonPropertyFilter(new PropertyFilter(){
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public boolean apply( Object source, String name, Object value )
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{
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if(!source.getClass().getName().equals(className)){
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return false; //不是本类的全部放行
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}
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for (int i = 0; i < kickProperties.length; i++) {
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if( kickProperties[i].equalsIgnoreCase( name ) ){
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//log.debug(" Your kill property is"+name);
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return true;
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}
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}
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return false;
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}
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});
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return jsonConfig;
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}
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/**
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* 仅仅保留对象中的给定字段，比如关联的一个对象(仅仅去掉指定类的属性) eg:
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* <br>Object yourObject=.......;
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* <br>String[] kickProperties = {"userName","userCode"}; //不需要转换的字段
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<br>JsonConfig config = JSONUtil.holdProperty(kickProperties, TSysUser.class.getName());
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<br>String string = JSONObject.fromObject(yourObject,config).toString();
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<br>OR
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<br>List string = JSONArray.fromObject(yourObject,config).toString();
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* @param holdProperties 需要剔出的属性列表
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* @param className javaBean 的类名
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* @return JsonConfig
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*/
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@SuppressWarnings("unchecked")
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public static JsonConfig holdProperty(final String[] holdProperties,final String className) {
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if(holdProperties== null){
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return null;
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}
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JsonConfig jsonConfig = new JsonConfig();
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jsonConfig.setJsonPropertyFilter(new PropertyFilter(){
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public boolean apply( Object source, String name, Object value )
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{
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//log.debug(source.getClass().getName()+" ==== "+className+"==="+name);
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if(!source.getClass().getName().equals(className)){
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return false; //不是本类的全部放行
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}
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for (int i = 0; i < holdProperties.length; i++) {
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//log.debug( holdProperties[i]+" equals "+name+"");
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if( holdProperties[i].equalsIgnoreCase( name ) ){
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//log.debug(" Your hold property is "+name);
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return false;
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}
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}
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return true;
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}
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});
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return jsonConfig;
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}
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/**
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* 仅仅保留对象中的给定字段，比如关联的一个对象(仅仅去掉指定类的属性) eg:
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* <br>Object yourObject=.......;
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* <br>String[] kickProperties = {"userName","userCode"}; //不需要转换的字段
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<br>JsonConfig config = JSONUtil.holdProperty(kickProperties, TSysUser.class.getName());
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<br>String string = JSONObject.fromObject(yourObject,config).toString();
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<br>OR
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<br>List string = JSONArray.fromObject(yourObject,config).toString();
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* @param holdProperties 需要剔出的属性列表
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* @param className javaBean 的类名
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* @return JsonConfig
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*/
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@SuppressWarnings("unchecked")
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public static JsonConfig holdProperty(final String[] holdProperties) {
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if(holdProperties== null){
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return null;
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}
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JsonConfig jsonConfig = new JsonConfig();
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jsonConfig.setJsonPropertyFilter(new PropertyFilter(){
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public boolean apply( Object source, String name, Object value )
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{
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//log.debug("===================================="+name);
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for (int i = 0; i < holdProperties.length; i++) {
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//log.debug( holdProperties[i]+" equals "+name+"");
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if( holdProperties[i].equalsIgnoreCase( name ) ){
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//log.debug(" Your hold property is "+name);
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return false;
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}
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}
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return true;
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}
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});
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return jsonConfig;
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}
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/**
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* json string 转换为 map 对象
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* @param jsonObj
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* @return
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*/
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public static Map<Object, Object> jsonToMap(Object jsonObj) {
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JSONObject jsonObject = JSONObject.fromObject(jsonObj);
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Map<Object, Object> map = (Map)jsonObject;
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return map;
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}
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}
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