1. 把java 對象列表轉換為json對象數組，并轉為字符串
2.把java對象轉換成json對象，并轉化為字符串
JSONObject object = JSONObject.fromObject(invite);
String str=object.toString());
3.把JSON字符串轉換為JAVA 對象數組
String personstr = getRequest().getParameter("persons");
JSONArray json = JSONArray.fromObject(personstr);
List<InvoidPerson> persons = (List<InvoidPerson>)JSONArray.toCollection(json, nvoidPerson.class);
4.把JSON字符串轉換為JAVA 對象
JSONObject jsonobject = JSONObject.fromObject(str);
PassportLendsEntity passportlends = null;
try {
//獲取一個json數組
JSONArray array = jsonobject.getJSONArray("passports");
//將json數組 轉換成 List<PassPortForLendsEntity>泛型
List<PassPortForLendsEntity> list = new ArrayList<PassPortForLendsEntity>();
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);
}
}
//轉換PassportLendsEntity 實體類
passportlends = (PassportLendsEntity)JSONObject.toBean(jsonobject, PassportLendsEntity.class);
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\":\"賀明\",\"passporttype\":\"K\"}]}";
相關的jar包：
