jackson – Json到多个参赛作品的POJO
我知道如果文件User.json有
{ "name" : { "first" : "Joe", "last" : "Sixpack" }, "gender" : "MALE", "verified" : false, "userImage" : "Rm9vYmFyIQ==" }
我可以像这样构造一个User对象:
User user = mapper.readValue(new File("user.json"), User.class);
但是如果User.json文件具有以下内容,我该如何构造对象列表:
{ "name" : { "first" : "Joe", "last" : "Sixpack" }, "gender" : "MALE", "verified" : false, "userImage" : "Rm9vYmFyIQ==" }, { "name" : { "first" : "Jane", "last" : "Austen" }, "gender" : "FEMALE", "verified" : false, "userImage" : "DFREWEWE==" }
?
多种方式:如果你有这些JSON数组,你可以这样做:
User[] users = mapper.readValue(json, User[].class);
或者,如果它只是一个根级别值序列,您可以这样做:
Iterator it = mapper.readValues(json, User.class);
并迭代值(添加到List等)