【代码生成】如何生成自定义表单？（2）---基础数据及注解
因为本人美工不行，假如要做出界面来的话不知何年马月才有成果，所以，我决定，
采用类似 mvc（asp.net上面的mvc我用过asp.net mvc及monorail，所以参考他们的模型来）模型来进行定义，然后根据这个模型来生成前台输入页面，前台逻辑验证，后台验证及赋值。
我们先研究一下应该如何描述这个过程里面用到的模型或者数据。请看下图：
很明显一个表单包含有多个参数，每个参数可以对应1到n个验证规则，每个参数也各自拥有自己的显示形式与数据类型，所以我们可以根据这些来编写一些基础数据类。
为了可以描述一个表单数据，我写了这些看上去无意义的注解了。注解类本身就是用于解释的，最重要的地方是如何将注解的信息读取出来，放到其他地方，写模板时如何调用这些信息。
【下面是一个表单模型，这次的目标就是要将它演变成为前台显示、验证，后台验证，赋值的代码】
package CodeGen.customModel.samples;
import java.util.Date;
import CodeGen.customModel.Annotations.*;
@FormDetail(prefix = "eform.")
public class jSampleForm {
@Display(name = "主键",display = HtmlUI.InputHiddenField)
@Validate_isInteger(ErrorMessage = "主键必须为数字")
@Validate_NumberRange(ErrorMessage = "必须大于3",max = "3")
public int id;
@Display(name="用户姓名",display =HtmlUI.InputNormalText)
@Validate_isRequired(ErrorMessage = "必须填写用户帐号")
@Validate_CustomRegex(Value = "[a-zA-Z0-9_]+",ErrorMessage = "用户名称只能包含英文数字及下划线！")
@Validate_StringRange(minLen = "6",maxLen = "15",ErrorMessage = "用户帐号长度为6到15位！")
public String userName;
@Display(name="年龄",display = HtmlUI.InputNormalText)
@Validate_NumberRange(min="16",max="99",ErrorMessage = "年龄段必须大于16和小于99！")
public int age;
@Display(name="是否男性",display = HtmlUI.Radio_Boolean)
@Validate_isRequired(ErrorMessage = "必须选择性别！")
public boolean isMale;
@Display(name="是否是学生",display = HtmlUI.Checkbox_Boolean)
public boolean isStudent;
@Display(name="余额",display = HtmlUI.InputNormalText)
public float balance;
@Display(name="生日",display = HtmlUI.InputDateTimePicker)
@Validate_isDateTime(ErrorMessage = "生日格式错误！")
public Date birthday;
@Display(name="喜爱颜色",display = HtmlUI.InputColorPicker)
@Validate_isColor(ErrorMessage = "喜爱颜色的填写格式错误！")
@Validate_isRequired(ErrorMessage = "必须填写喜爱的颜色！")
public String favoriteColor;
@Display(name="邮箱地址",display = HtmlUI.InputEmailText)
@Validate_isEmailAddr(ErrorMessage = "邮箱地址格式错误！")
@Validate_isRequired(ErrorMessage = "必须填写邮箱地址。")
public String email;
@Display(name="手机号码",display = HtmlUI.InputNormalText)
@Validate_isPhoneNumber(ErrorMessage = "手机号码格式错误！")
@Validate_isRequired(ErrorMessage = "必须填写手机号码！")
public String mobile;
@Display(name="个人首页",display = HtmlUI.InputNormalText)
@Validate_isRequired(ErrorMessage = "必须填写个人首页地址")
@Validate_isURL(ErrorMessage = "个人首页的格式错误！")
public String myHomePage;
@Display(name="我的附件",display = HtmlUI.InputFileURL)
@Validate_isRequired(ErrorMessage = "必须选择或填写附件地址")
@Validate_isURL(ErrorMessage = "附件地址格式错误！")
public String attachFileURL;
@Display(name="我的头像",display = HtmlUI.InputImgURL)
@Validate_isRequired(ErrorMessage = "必须上传或填写头像图片！")
@Validate_isURL(ErrorMessage = "头像地址格式错误！")
public String headPhoto;
@Display(name="个人简介",display = HtmlUI.InputRichEditor)
public String description;
}
【下面将无关紧要的注解类都贴上来】
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Display {
String name() default "";
HtmlUI display() default HtmlUI.InputNormalText;
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface FormDetail {
String prefix() default "model.";
String formID() default "form1";
String formName() default "myform";
String formName_ZH() default "默认表单";
}
package CodeGen.customModel.Annotations;
public enum HtmlUI {
InputNormalText,
InputEmailText,
InputHiddenField,
InputImgURL,
InputFileURL,
InputRichEditor,
InputDateTimePicker,
InputColorPicker,
Checkbox_Boolean,
Radio_Boolean
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_CustomRegex {
String Value();
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isBoolean {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isColor {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isDateTime {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isEmailAddr {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isInteger {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isNumberic {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isPhoneNumber {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isRequired {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_isURL {
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_NumberRange {
String min() default "";
String max() default "";
String ErrorMessage() default "";
}
package CodeGen.customModel.Annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Validate_StringRange {
String maxLen() default "";
String minLen() default "";
String ErrorMessage() default "";
}
【上面的都是注解类，注解类是让电脑看的，方便其他人使用的，但是真正表示表单的数据结构的是下面这些】
package CodeGen.customModel.util;
public class DisplayType {
public final String InputNormalText="InputNormalText",
InputEmailText="InputEmailText",
InputHiddenField="InputHiddenField",
InputImgURL="InputImgURL",
InputFileURL="InputFileURL",
InputRichEditor="InputRichEditor",
InputDateTimePicker="InputDateTimePicker",
InputColorPicker="InputColorPicker",
Checkbox_Boolean="Checkbox_Boolean",
Radio_Boolean="Radio_Boolean";
public String getInputNormalText(){
return InputNormalText;
}
public String getInputHiddenField(){
return InputHiddenField;
}
public String getInputEmailText(){
return InputEmailText;
}
public String getInputImgURL(){
return InputImgURL;
}
public String getInputFileURL(){
return InputFileURL;
}
public String getInputRichEditor(){
return InputRichEditor;
}
public String getInputDateTimePicker(){
return InputDateTimePicker;
}
public String getInputColorPicker(){
return InputColorPicker;
}
public String getCheckbox_Boolean(){
return Checkbox_Boolean;
}
public String getRadio_Boolean(){
return Radio_Boolean;
}
}
package CodeGen.customModel.util;
import java.util.ArrayList;
public class FormInfo {
public ArrayList<FormParameter> paralist=new ArrayList<FormParameter>();
public String prefix="model.";
public String formID="form1";
public String formName="myform";
public String formName_ZH="默认表单";
public String getChineseName(){
return formName_ZH;
}
public String getEnglishName(){
return formName;
}
public String getFormID(){
return formID;
}
public String getPrefix(){
return prefix;
}
public ArrayList<FormParameter> getParameterList(){
return paralist;
}
}
package CodeGen.customModel.util;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.LinkedHashMap;
public class FormParameter {
public String parameterName;
public String parameterType;
public String displayType="";
public String name_ZH="";
public LinkedHashMap<String,ValidateInput> validatelist=new LinkedHashMap<String, ValidateInput>();
public String getParameterName(){
return parameterName;
}
public String getParameterType(){
return parameterType;
}
public String getDisplayType(){
return displayType;
}
public String getName_ZH(){
return name_ZH;
}
public LinkedHashMap<String,ValidateInput> getValidatelist(){
return validatelist;
}
}
package CodeGen.customModel.util;
public class JavaDataType {
public final String Type_Integer="integer";
public final String Type_Boolean="boolean";
public final String Type_Float="float";
public final String Type_Double="double";
public final String Type_String="String";
public final String Type_Date="Date";
public final String Type_Long="long";
public final String Type_Object="Object";
public String getType_Integer(){
return Type_Integer;
}
public String getType_Boolean(){
return Type_Boolean;
}
public String getType_Float(){
return Type_Float;
}
public String getType_Double(){
return Type_Double;
}
public String getType_String(){
return Type_String;
}
public String getType_Date(){
return Type_Date;
}
public String getType_Long(){
return Type_Long;
}
public String getType_Object(){
return Type_Object;
}
public String getDefaultValueStrByType(String Type_Str){
if(Type_Str==null){
return "new Object()";
}
else if(Type_Str.equals(Type_Integer)){
return "0";
}
else if(Type_Str.equals(Type_Boolean)){
return "false";
}
else if(Type_Str.equals(Type_Float)){
return "0.0";
}
else if(Type_Str.equals(Type_Double)){
return "0.0";
}
else if(Type_Str.equals(Type_String)){
return "\"\"";
}
else if(Type_Str.equals(Type_Date)){
return "new Date()";
}
else if(Type_Str.equals(Type_Long)){
return "0";
}
else{
return "new Object()";
}
}
}
package CodeGen.customModel.util;
import java.util.Hashtable;
public class ValidateInput implements IValidateRule {
private Hashtable<String,String> _paras=new Hashtable<String, String>();
ValidateRuleType vtype=new ValidateRuleType();
public String VRuleType="";
private String _ruleName="";
private String _errormsg="";
public String getRuleName(){
return _ruleName;
}
public void setRuleName(String _name){
_ruleName=_name;
VRuleType=_name;
}
public String getValidateRuleType(){
return VRuleType;
}
public String get(String key){
return _paras.get(key);
}
public void set(String key,String value){
_paras.put(key,value);
}
public String getErrorMessage(){
return _errormsg;
}
public void setErrorMessage(String errorMessage){
_errormsg=errorMessage;
}
}
package CodeGen.customModel.util;
public class ValidateRuleType {
public final String rule_isInteger="rule_isInteger";
public final String rule_isNumberic="rule_isNumberic";
public final String rule_isColor="rule_isColor";
public final String rule_isBoolean="rule_isBoolean";
public final String rule_isDateTime="rule_isDateTime";
public final String rule_isEmailAddr="rule_isEmailAddr";
public final String rule_isRequired="rule_isRequired";
public final String rule_isURL="rule_isURL";
public final String rule_NumberRange="rule_NumberRange";
public final String rule_StringRange="rule_StringRange";
public final String rule_CustomRegex="rule_CustomRegex";
public final String rule_isPhoneNumber="rule_isPhoneNumber";
public String getSth(){
return "";
}
public String getRule_isInteger(){
return rule_isInteger;
}
public String getRule_isNumberic(){
return rule_isNumberic;
}
public String getRule_isColor(){
return rule_isColor;
}
public String getRule_isBoolean(){
return rule_isBoolean;
}
public String getRule_isDateTime(){
return rule_isDateTime;
}
public String getRule_isEmailAddr(){
return rule_isEmailAddr;
}
public String getRule_isRequired(){
return rule_isRequired;
}
public String getRule_isURL(){
return rule_isURL;
}
public String getRule_NumberRange(){
return rule_NumberRange;
}
public String getRule_StringRange(){
return rule_StringRange;
}
public String getRule_CustomRegex(){
return rule_CustomRegex;
}
public String getRule_isPhoneNumber(){
return rule_isPhoneNumber;
}
}
【好了，所有基础数据都齐全了，下面就说明如何将用户的注解转化成为表单的信息】