Json 自定义使用函数的简单实例
如下所示：
/*
*CreatedonNov4,2016
*
*TODOTochangethetemplateforthisgeneratedfilegoto
*Window-Preferences-Java-CodeStyle-CodeTemplates
*/
packagecom.suning.commerce.util;
importjava.sql.Date;
importjava.sql.Time;
importjava.sql.Timestamp;
importjava.util.Collection;
importjava.util.Iterator;
importjava.util.Map;
importorg.apache.commons.beanutils.BeanUtils;
/**
*@authornicholastse
*
*TODOTochangethetemplateforthisgeneratedtypecommentgotoWindow-Preferences-Java-CodeStyle-CodeTemplates
*/
publicclassJsonUtils{
/**
*
*@paramarray
*@return
*/
privatestaticStringarray2Json(Object[]array){
if(array.length==0)
return"[]";
inti=array.length;
StringBuffersb=newStringBuffer(i<<4);
sb.append('[');
for(intj=0;j<i;j++){
Objecto=array[j];
sb.append(toJson(o));
sb.append(',');
}
//将最后添加的','变为']':
sb.setCharAt(sb.length()-1,']');
returnsb.toString();
}
privatestaticStringstring2Json(Strings){
StringBuffersb=newStringBuffer(s.length()+20);
sb.append('\"');
for(inti=0;i<s.length();i++){
charc=s.charAt(i);
switch(c){
case'\"':
sb.append("\\\"");
break;
case'\\':
sb.append("\\\\");
break;
case'/':
sb.append("\\/");
break;
case'\b':
sb.append("\\b");
break;
case'\f':
sb.append("\\f");
break;
case'\n':
sb.append("\\n");
break;
case'\r':
sb.append("\\r");
break;
case'\t':
sb.append("\\t");
break;
default:
sb.append(c);
}
}
sb.append('\"');
returnsb.toString();
}
publicstaticStringtoJson(Objecto){
if(o==null){
return"null";
}elseif(oinstanceofString){
returnstring2Json((String)o);
}elseif((oinstanceofBoolean)||(oinstanceofNumber)){
returno.toString();
}elseif((oinstanceofDate)||(oinstanceofTime)||oinstanceofTimestamp){
returno.toString();
}elseif(oinstanceofjava.util.Date){
returnDateUtil.formatDate((java.util.Date)o,"yyyy-MM-ddHH:mm:ss");
}elseif(oinstanceofMap){
returnmap2Json((Map)o);
}elseif(oinstanceofObject[]){
returnarray2Json((Object[])o);
}elseif(oinstanceofCollection){
returnarray2Json(((Collection)o).toArray());
}else{
try{
Mapdescribe=BeanUtils.describe(o);
returnmap2Json(describe);
}catch(Exceptione){
//TODOAuto-generatedcatchblock
e.printStackTrace();
}
}
thrownewRuntimeException("Unsupportedtype:"+o.getClass().getName());
}
/**
*
*@parammap
*@return
*/
privatestaticStringmap2Json(Mapmap){
if(map.isEmpty())
return"{}";
StringBuffersb=newStringBuffer(map.size()<<4);
sb.append('{');
Iteratoriterator=map.keySet().iterator();
while(iterator.hasNext()){
Objectkey=iterator.next();
Objectvalue=map.get(key);
sb.append('\"');
sb.append(key);
sb.append('\"');
sb.append(':');
sb.append(toJson(value));
sb.append(',');
}
//将最后的','变为'}':
sb.setCharAt(sb.length()-1,'}');
returnsb.toString();
}
}
以上就是小编为大家带来的Json自定义使用函数的简单实例全部内容了，希望大家多多支持毛票票~