一、插件實現
插件的功能就是加載校驗規則,實現代碼如下
package com.nmtx.plugins.validation;
import java.util.Properties;
import com.jfinal.core.Const;
import com.jfinal.kit.Prop;
import com.jfinal.kit.PropKit;
import com.jfinal.plugin.IPlugin;
public class ValidationPlugin implements IPlugin{
protected Prop prop = null;
public ValidationPlugin(String fileName) {
prop = PropKit.use(fileName, Const.DEFAULT_ENCODING);
}
public ValidationPlugin(String fileName, String encoding) {
prop = PropKit.use(fileName, encoding);
}
/**
* 初始化校驗規則
*/
public boolean start() {
Properties properties = prop.getProperties();
for (Object object : properties.keySet()) {
String key = (String) object;
String rule[] = properties.getProperty(key).split(",");
ValidationRules.ruleMap.put(key, rule[0]);
ValidationRules.ruleErrorMessageMap.put(key,rule[1]);
}
return true;
}
public boolean stop() {
return true;
}
}
package com.nmtx.plugins.validation;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Pattern;
import com.jfinal.kit.StrKit;
public class ValidationRules {
static Map<String, String> ruleMap = new HashMap<String,String>();
static Map<String, String> ruleErrorMessageMap = new HashMap<String,String>();
public static boolean isMatch(String rule, String value) {
boolean matchResult;
if(rule.equals("required")){
matchResult = StrKit.notBlank(value);
}else {
if(StrKit.notBlank(value))matchResult = Pattern.compile(ruleMap.get(rule)).matcher(value).matches();
else matchResult = true;
}
return matchResult;
}
public static String getErrorMessage(String rule){
return ruleErrorMessageMap.get(rule);
}
}
規則加載後就是如何攔截校驗了,這裏用攔截器實現大概如下
package com.nmtx.plugins.validation;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import com.jfinal.aop.Duang;
import com.jfinal.aop.Interceptor;
import com.jfinal.aop.Invocation;
import com.jfinal.core.Controller;
import com.jfinal.kit.StrKit;
import com.nmtx.common.ErrorCode;
import com.nmtx.common.MessageResp;
import com.nmtx.controller.para.IParaFormat;
import com.nmtx.controller.para.impl.HumpToMiddleScoreFormat;
public class ValidatorInterceptor implements Interceptor {
private IParaFormat humpParaFormat = Duang.duang("humpParaFormat", HumpToMiddleScoreFormat.class);
public void intercept(Invocation inv) {
String methodName = inv.getMethodName();
Controller controller = inv.getController();
Method[] methods = controller.getClass().getDeclaredMethods();
boolean matchResult = true;
for (Method method : methods) {
if (method.getName().equals(methodName)) {
boolean hasAnnotation = method.isAnnotationPresent(Validation.class);
if (hasAnnotation) {
Validation anno = method.getAnnotation(Validation.class);
Map<String, String> ruleMap = dealRule(anno.rules());
for (String key : ruleMap.keySet()) {
String value = controller.getPara(humpParaFormat.paraToFormat(key));
String rule = ruleMap.get(key);
matchResult = ValidationRules.isMatch(rule, value);
MessageResp<String> message = new MessageResp<String>();
message.setCode(ErrorCode.ERROR);
if (!matchResult) {
message.setMessage(humpParaFormat.paraToFormat(key)+ValidationRules.getErrorMessage(rule));
message.setData("");
controller.renderJson(message);
break;
}
}
}
}
}
if (matchResult)
inv.invoke();
}
public Map<String, String> dealRule(String rules) {
Map<String, String> map = new IdentityHashMap<String, String>();
if (StrKit.notBlank(rules)) {
String[] paraRules = rules.split(";");
for (String paraRule : paraRules) {
String[] para = paraRule.split("=");
map.put(para[0], para[1]);
}
}
return map;
}
}
有了攔截器,攔截的方法肯定需要註解了,註解實現如下
package com.nmtx.plugins.validation;
import java.lang.annotation.*;
/**
* 定義Validator規則的註解
* @author lianghao
*
*/
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface Validation {
String rules ();
}
這樣攔截插件構造就完成了
二,使用篇
添加插件
/**
* 定義插件,如數據庫連接等一些插件
*/
@Override
public void configPlugin(Plugins me) {
me.add(new ValidationPlugin("validation.properties"));
}
添加全局攔截
/**
* 必須按這種順序,不允許改,不得在新增新的全局攔截器
*/
@Override
public void configInterceptor(Interceptors me) {
me.add(new ValidatorInterceptor());
}
只需一個註解就搞定參數校驗,demo如下
@Validation(rules = "userName=required;password=required")
public void login() {
}
需要什麼規則還可以自己加在配置文件裏,附上一些常用的校驗
email=^\w+([-+.]\w+)@\w+([-.]\w+)\.\w+([-.]\w+)*$,"郵箱格式不正確"
chinese=^[\u4e00-\u9fa5]+$,"不是中文"
number=^[0-9]*$,"只能輸入數字"
phone=^1+[0-9]{10}$,"號碼格式不正確"
idcard=^(\d{15}|\d{18})$,"身份證號碼不正確"//15或18位
postCode=^[0-9]{6}$,"郵政編碼格式不正確"
url=[a-zA-z]+://[^\s]*,"url格式不對"
date=[0-9]{4}-[0-9]{2}-[0-9]{2},"時間格式不對(yyyy-mm-dd)"
creditcard=^((?:4\d{3})|(?:5[1-5]\d{2})|(?:6011)|(?:3[68]\d{2})|(?:30[012345]\d),"信用卡格式不正確"
acceptImg=[.](jpg|gif|bmp|png)$,"圖片後綴名格式不正確"
acceptFile=[.](xls|xlsx|csv|txt)$,"文件後綴名格式不正確"
required=required,"參數不能爲空"