完成了主题逻辑

lib/generator.dart

@@ -1,17 +1,58 @@
+import 'dart:convert';
+
 import 'package:json2dart_serialization/template.dart';
 
 class Generator {
   String jsonString;
   String fileName;
-  Generator(this.jsonString, this.fileName);
+  String entityName;
+
+  Generator(this.jsonString, this.fileName, [this.entityName]);
+
+  List<DefaultTemplate> templateList = [];
 
   String makeDartCode() {
-    Template template = DefaultTemplate();
-    return jsonString;
+    var entityName = this.entityName ?? "Entity";
+    DefaultTemplate template =
+        DefaultTemplate(srcJson: jsonString, className: entityName);
+    StringBuffer resultSb = StringBuffer();
+    templateList.add(template);
+    refreshTemplate(template);
+
+    resultSb.writeln(header);
+    templateList.forEach((template) {
+      resultSb.writeln(template.toString());
+    });
+    return resultSb.toString();
   }
 
-  static const String importString = "import 'package:json_annotation/json_annotation.dart';";
+  void refreshTemplate(DefaultTemplate template) {
+    var fieldList = template.fieldList;
+    bool needRefresh = false;
+    fieldList.forEach((filed) {
+      if (filed is MapField) {
+//        filed.typeString
+        DefaultTemplate template = DefaultTemplate(
+            srcJson: json.encode(filed.map), className: filed.typeString);
+        templateList.add(template);
+        refreshTemplate(template);
+      } else if (filed is ListField) {
+        if (filed.childIsObject) {
+          DefaultTemplate template = DefaultTemplate(
+              srcJson: json.encode(filed.list[0]), className: filed.typeName);
+          templateList.add(template);
+          refreshTemplate(template);
+        }
+      }
+    });
+  }
+
+  static const String importString =
+      "import 'package:json_annotation/json_annotation.dart';";
 
   String get header => """$importString 
-  part $fileName.g.dart;""";
+  
+part $fileName.g.dart;
+
+""";
 }

lib/json_generator.dart

@@ -0,0 +1,108 @@
+import 'dart:convert';
+import 'dart:html';
+
+import 'package:json2dart_serialization/generator.dart';
+
+String entityName = null;
+
+bool useJsonKey = true;
+
+bool isCamelCase = true;
+
+const defaultValue = """{
+  "body": "",
+  "data": [1],
+  "input_content":["1"],
+  "list1":[{"name":"hello"}],
+  "number": [1.02],
+  "user":{"name":"abc"}
+}""";
+
+void main() {
+  TextAreaElement jsonInput = querySelector("#json");
+  jsonInput.value = defaultValue;
+
+  jsonInput.onInput.listen((event) {
+    refreshData();
+  });
+
+  InputElement entityNameEle = querySelector("#out_entity_name");
+  entityNameEle.onInput.listen((event) {
+    entityName = entityNameEle.value;
+    refreshData();
+  });
+
+  ButtonElement formatButton = querySelector("#format");
+  formatButton.onClick.listen((click) {
+    String pretty;
+    try {
+      pretty = formatJson(jsonInput.value);
+    } on Exception {
+      return;
+    }
+    jsonInput.value = pretty;
+  });
+
+  InputElement eJsonKey = querySelector("#use_json_key");
+  InputElement eCamelCase = querySelector("#camelCase");
+
+  void onJsonKeyChange() {
+    useJsonKey = eJsonKey.checked;
+    eCamelCase.disabled = !useJsonKey;
+    isCamelCase = false;
+    refreshData();
+  }
+
+  eJsonKey.checked = useJsonKey;
+  eJsonKey.onInput.listen((event) {
+    onJsonKeyChange();
+  });
+
+  querySelector("#check_label").onClick.listen((event) {
+    eJsonKey.checked = !eJsonKey.checked;
+    onJsonKeyChange();
+  });
+
+  eCamelCase.checked = isCamelCase;
+  eCamelCase.onInput.listen((event) {
+    isCamelCase = eCamelCase.checked;
+    refreshData();
+  });
+
+  querySelector("#camelCaseLabel").onClick.listen((event) {
+    eCamelCase.checked = !eCamelCase.checked;
+    refreshData();
+  });
+
+  refreshData();
+}
+
+void refreshData() {
+  TextAreaElement jsonInput = querySelector("#json");
+  var string = jsonInput.value;
+  String pretty;
+  TextAreaElement result = querySelector("#result");
+  try {
+    pretty = formatJson(string);
+  } on Exception {
+    result.value = "不是一个正确的json";
+    return;
+  }
+  String entityClassName;
+  if (entityName == null || entityName == "" || entityName.trim() == "") {
+    entityClassName = "Entity";
+  } else {
+    entityClassName = entityName;
+  }
+
+  var generator = Generator(string, 'test.dart', entityClassName);
+  var dartCode = generator.makeDartCode();
+
+  result.value = dartCode;
+}
+
+String formatJson(String jsonString) {
+  var map = json.decode(jsonString);
+  var prettyString = JsonEncoder.withIndent("  ").convert(map);
+  return prettyString;
+}

lib/template.dart

@@ -1,3 +1,6 @@
+import 'dart:convert';
+import 'package:json2dart_serialization/json_generator.dart' as main;
+
 abstract class Template {
   String declare();
 
@@ -8,43 +11,217 @@ abstract class Template {
   String method();
 
   String end();
+
+  @override
+  String toString() {
+    return createCode(this);
+  }
 }
 
 class DefaultTemplate extends Template {
+  String srcJson;
+  String className;
+
+  String tab = "  ";
+
+  DefaultTemplate({this.srcJson, this.className = "Entity"});
+
   @override
   String constructor() {
-    // TODO: implement constructor
+    var fieldList = FieldHelper(srcJson).getFields();
+    var filedString = StringBuffer();
+    fieldList.forEach((f) {
+      filedString.write("this.${f.nameString},");
+    });
+    return "${tab}$className($filedString);";
   }
 
   @override
   String declare() {
-    // TODO: implement declare
+    return """@JsonSerializable()
+class $className extends Object with _\$${className}SerializerMixin {""";
   }
 
   @override
   String end() {
-    // TODO: implement end
+    return "}";
   }
 
   @override
   String field() {
-    // TODO: implement field
+//    var useJsonKey
+
+    var fieldList = FieldHelper(srcJson).getFields();
+    var sb = StringBuffer();
+    fieldList.forEach((f) {
+      sb.writeln();
+      if (main.useJsonKey) {
+        sb.writeln("  @JsonKey(name: '${f.nameString}')");
+      }
+      String nameString;
+      if (main.isCamelCase) {
+        nameString = camelCase(f.nameString);
+      } else {
+        nameString = f.nameString;
+      }
+      sb.writeln("  ${f.typeString} $nameString;");
+    });
+    return sb.toString();
+  }
+
+  String camelCase(String name) {
+    StringBuffer sb = StringBuffer();
+    var list = name.split("_");
+    for (int i = 0; i < list.length; i++) {
+      var item = list[i];
+      String name = "";
+      if (i == 0) {
+        name = firstLetterLower(item);
+      } else {
+        name = firstLetterUpper(item);
+      }
+      sb.write(name);
+    }
+    return sb.toString();
   }
 
   @override
   String method() {
-    // TODO: implement method
+    return "  factory $className.fromJson(Map<String, dynamic> srcJson) => _\$${className}(srcJson);";
+  }
+
+  List<Field> get fieldList => FieldHelper(srcJson).getFields();
+}
+
+class FieldHelper {
+  String srcJson;
+
+  FieldHelper(this.srcJson);
+
+  List<Field> getFields() {
+    var j = json.decode(srcJson);
+    if (j is Map<String, dynamic>) {
+      List<Field> list = [];
+      j.forEach((k, v) {
+        if (v is List) {
+          list.add(ListField(v, k));
+        } else if (v is String) {
+          list.add(SimpleField("String", k));
+        } else if (v is int) {
+          list.add(SimpleField("int", k));
+        } else if (v is double) {
+          list.add(SimpleField("double", k));
+        } else if (v is bool) {
+          list.add(SimpleField("bool", k));
+        } else if (v is Map<String, dynamic>) {
+          list.add(MapField(v, k));
+        }
+      });
+      return list;
+    }
+    return [];
+  }
+}
+
+abstract class Field {
+  String get typeString;
+
+  String get nameString;
+}
+
+class SimpleField extends Field {
+  @override
+  String typeString;
+
+  @override
+  String nameString;
+
+  SimpleField(this.typeString, this.nameString);
+}
+
+class ListField extends Field {
+  List<dynamic> list;
+
+  @override
+  String nameString;
+
+  ListField(this.list, this.nameString);
+
+  bool get childIsObject {
+    if (list == null || list.isEmpty) {
+      return false;
+    }
+    if (list[0] is Map<String, dynamic>) {
+      return true;
+    }
+    return false;
+  }
+
+  String get typeName {
+    String type = "dynamic";
+    if (list == null || list.isEmpty) {
+      return type;
+    }
+    var item = list[0];
+
+    if (item is List) {
+      type = "${ListField(item, "").typeString}";
+    } else if (item is Map<String, dynamic>) {
+      type = "${firstLetterUpper(nameString)}";
+    } else if (item is int) {
+      type = "int";
+    } else if (item is double) {
+      type = "double";
+    } else if (item is String) {
+      type = "String";
+    } else if (item is bool) {
+      type = "bool";
+    }
+
+    return type;
+  }
+
+  @override
+  String get typeString {
+    return "List<$typeName>";
+  }
+}
+
+class MapField extends Field {
+  Map<String, dynamic> map;
+  String nameString;
+
+  MapField(this.map, this.nameString);
+
+  @override
+  String get typeString {
+    return firstLetterUpper(nameString);
   }
 }
 
 String createCode(Template template) {
   var code = """${template.declare()}
-  ${template.field()}
-    ${template.constructor()}
+${template.field()}
+${template.constructor()}
 
-    ${template.method()}
+${template.method()}
+
+${template.end()}
 
-    ${template.end()}
   """;
   return code;
 }
+
+String firstLetterUpper(String value) {
+  if (value == null || value.isEmpty) {
+    return "";
+  }
+  return value[0].toUpperCase() + value.substring(1);
+}
+
+String firstLetterLower(String value) {
+  if (value == null || value.isEmpty) {
+    return "";
+  }
+  return value[0].toLowerCase() + value.substring(1);
+}

lib/test.dart

@@ -0,0 +1,3 @@
+void main() {
+  print(1.0 is int);
+}

web/index.html

@@ -27,6 +27,12 @@
     </div>
     <div id="output" class="textarea">
         <div class="top"></div>
+        <div class="result_title">
+            类名称
+            <input id="out_entity_name"/>
+            <input type="checkbox" id="use_json_key"/><span id="check_label">jsonKey annotation</span>
+            <input type="checkbox" id="camelCase"/><span id="camelCaseLabel">use camelCase</span>
+        </div>
         <textarea id="result" title="结果"></textarea>
     </div>
 

web/main.dart

@@ -1,42 +1,5 @@
-import 'dart:convert';
-import 'dart:html';
-
-import 'package:json2dart_serialization/generator.dart';
+import 'package:json2dart_serialization/json_generator.dart' as app;
 
 void main() {
-  TextAreaElement jsonInput = querySelector("#json");
-  jsonInput.onInput.listen((event) {
-    var string = jsonInput.value;
-    String pretty;
-    TextAreaElement result = querySelector("#result");
-    try {
-      pretty = formatJson(string);
-    } on Exception {
-      print("格式化错误");
-      result.value = "不是一个正确的json";
-      return;
-    }
-
-    var generator = Generator(string, 'test.dart');
-    var dartCode = generator.makeDartCode();
-
-    result.value = dartCode;
-  });
-
-  ButtonElement formatButton = querySelector("#format");
-  formatButton.onClick.listen((click) {
-    String pretty;
-    try {
-      pretty = formatJson(jsonInput.value);
-    } on Exception {
-      return;
-    }
-    jsonInput.value = pretty;
-  });
-}
-
-String formatJson(String jsonString) {
-  var map = json.decode(jsonString);
-  var prettyString = JsonEncoder.withIndent("  ").convert(map);
-  return prettyString;
+  app.main();
 }

web/styles.css

@@ -26,3 +26,11 @@ textarea {
     width: 90%;
     height: 90vh;
 }
+
+.result_title {
+    padding-bottom: 15px;
+}
+
+.out_entity_name{
+    height: 40px;
+}