serialization - 如何使用序列化包

Question

我想将我的类(class)转换为Map，所以我使用的是Serialization包。从该示例看起来很简单:

var address = new Address();
 address.street = 'N 34th';
 address.city = 'Seattle';
 var serialization = new Serialization()
     ..addRuleFor(Address);
 Map output = serialization.write(address);

我希望看到类似于 {'street' : 'N 34th', 'city' : 'Seattle'}的输出，但它只是输出一些我不知道那是什么的东西
{"roots":[{"__Ref":true,"rule":3,"object":0}],"data":[[],[],[],[["Seattle","N 34th"]]],"rules":"{\"roots\":[{\"__Ref\":true,\"rule\":1,\"object\":0}],\"data\":[[],[[{\"__Ref\":true,\"rule\":4,\"object\":0},{\"__Ref\":true,\"rule\":3,\"object\":0},{\"__Ref\":true,\"rule\":5,\"object\":0},{\"__Ref\":true,\"rule\":6,\"object\":0}]],[[],[],[\"city\",\"street\"]],[[]],[[]],[[]],[[{\"__Ref\":true,\"rule\":2,\"object\":0},{\"__Ref\":true,\"rule\":2,\"object\":1},\"\",{\"__Ref\":true,\"rule\":2,\"object\":2},{\"__Ref\":true,\"rule\":7,\"object\":0}]],[\"Address\"]],\"rules\":null}"}

Answer 1

序列化不应创建人类可读的输出。也许JSON输出更符合您的需求:

import dart:convert;

{
var address = new Address();
  ..address.street = 'N 34th';
  ..address.city = 'Seattle';

var encoded = JSON.encode(address, mirrorJson);
}

Map mirrorJson(o) { 
  Map map = new Map();
  InstanceMirror im = reflect(o);
  ClassMirror cm = im.type;
  var decls = cm.declarations.values.where((dm) => dm is VariableMirror);
  decls.forEach((dm) {
    var key = MirrorSystem.getName(dm.simpleName);
    var val = im.getField(dm.simpleName).reflectee;
    map[key] = val;
  });

  return map;
}