1. //把java对象列表转换为json对象数组，并转为字符串
JSONArrayarray = JSONArray.fromObject(userlist);
Stringjsonstr = array.toString();
2.//把java对象转换成json对象，并转化为字符串
JSONObject object =JSONObject.fromObject(invite);
Log4jInit.ysulogger.debug(object.toString());
3.//把JSON字符串转换为JAVA对象数组
String personstr =getRequest().getParameter("persons");
JSONArray json =JSONArray.fromObject(personstr);
Listpersons =(List)JSONArray.toCollection(json,nvoidPerson.class);
4.//把JSON字符串转换为JAVA对象
str
="{"lendperson":"李四","lendcompany":"有限公司","checkperson":"李四",
"lenddate":"2010-07-19T00:00:00","lendcounts":4,"
passports":[{"passportid":"d","name":"李豫川","passporttype":"K"},
{"passportid":"K9051","name":"李平","passporttype":"K"},
{"passportid":"K90517","name":"袁寒梅","passporttype":"K"},
{"passportid":"K905199","name":"贺明","passporttype":"K"}]}";
JSONObjectjsonobject = JSONObject.fromObject(str);
PassportLendsEntitypassportlends = null;
try {
//获取一个json数组
JSONArrayarray = jsonobject.getJSONArray("passports");
//将json数组 转换成List泛型
Listlist = newArrayList();
for (int i =0; i < array.size();
i++){
JSONObject object
=(JSONObject)array.get(i);
PassPortForLendsEntity passport
=(PassPortForLendsEntity)JSONObject.toBean(object,
PassPortForLendsEntity.class);
if(passport != null){
list.add(passport);
}
}
//转换PassportLendsEntity实体类
passportlends= (PassportLendsEntity)JSONObject.toBean(jsonobject,PassportLendsEntity.class);