com.binfast.adpter.core.Injector Maven / Gradle / Ivy
/**
* Copyright (c) 2011-2023, James Zhan 詹波 ([email protected]).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.binfast.adpter.core;
import com.binfast.adpter.core.converter.TypeConverter;
import com.binfast.adpter.core.kit.StrKit;
import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Map;
/**
* Injector.
*/
public class Injector {
private static T createInstance(Class objClass) {
try {
return objClass.newInstance();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
// public static T injectModel(Class modelClass, HttpServletRequest request, boolean skipConvertError) {
// String modelName = modelClass.getSimpleName();
// return (T)injectModel(modelClass, StrKit.firstCharToLowerCase(modelName), request, skipConvertError);
// }
public static T injectBean(Class beanClass, HttpServletRequest request, boolean skipConvertError) {
String beanName = beanClass.getSimpleName();
return (T)injectBean(beanClass, StrKit.firstCharToLowerCase(beanName), request, skipConvertError);
}
@SuppressWarnings("unchecked")
public static T injectBean(Class beanClass, String beanName, HttpServletRequest request, boolean skipConvertError) {
Object bean = createInstance(beanClass);
String modelNameAndDot = StrKit.notBlank(beanName) ? beanName + "." : null;
TypeConverter converter = TypeConverter.me();
Map parasMap = request.getParameterMap();
Method[] methods = beanClass.getMethods();
for (Method method : methods) {
String methodName = method.getName();
if (methodName.startsWith("set") == false || methodName.length() <= 3) { // only setter method
continue;
}
Class[] types = method.getParameterTypes();
if (types.length != 1) { // only one parameter
continue;
}
String attrName = StrKit.firstCharToLowerCase(methodName.substring(3));
String paraName = modelNameAndDot != null ? modelNameAndDot + attrName : attrName;
if (parasMap.containsKey(paraName)) {
try {
String paraValue = request.getParameter(paraName);
Object value = paraValue != null ? converter.convert(types[0], paraValue) : null;
method.invoke(bean, value);
} catch (Exception e) {
if (skipConvertError == false) {
// throw new RuntimeException(e);
throw new RuntimeException("Can not convert parameter: " + paraName, e);
}
}
}
}
return (T)bean;
}
// @SuppressWarnings("unchecked")
// public static T injectModel(Class modelClass, String modelName, HttpServletRequest request, boolean skipConvertError) {
// Object temp = createInstance(modelClass);
// if (temp instanceof Model == false) {
// throw new IllegalArgumentException("getModel only support class of Model, using getBean for other class.");
// }
//
// Model model = (Model)temp;
// Table table = TableMapping.me().getTable(model.getClass());
// if (table == null) {
// throw new ActiveRecordException("The Table mapping of model: " + modelClass.getName() +
// " not exists or the ActiveRecordPlugin not start.");
// }
//
// String modelNameAndDot = StrKit.notBlank(modelName) ? modelName + "." : null;
// Map parasMap = request.getParameterMap();
// TypeConverter converter = TypeConverter.me();
// // 对 paraMap进行遍历而不是对table.getColumnTypeMapEntrySet()进行遍历，以便支持 CaseInsensitiveContainerFactory
// // 以及支持界面的 attrName有误时可以感知并抛出异常避免出错
// for (Entry entry : parasMap.entrySet()) {
// String paraName = entry.getKey();
// String attrName;
// if (modelNameAndDot != null) {
// if (paraName.startsWith(modelNameAndDot)) {
// attrName = paraName.substring(modelNameAndDot.length());
// } else {
// continue ;
// }
// } else {
// attrName = paraName;
// }
//
// Class colType = table.getColumnType(attrName);
// if (colType == null) {
// if (skipConvertError) {
// continue ;
// } else {
// throw new ActiveRecordException("The model attribute " + attrName + " is not exists.");
// }
// }
//
// try {
// String[] paraValueArray = entry.getValue();
// String paraValue = (paraValueArray != null && paraValueArray.length > 0) ? paraValueArray[0] : null;
//
// Object value = paraValue != null ? converter.convert(colType, paraValue) : null;
// model.set(attrName, value);
// } catch (Exception e) {
// if (skipConvertError == false) {
// throw new RuntimeException("Can not convert parameter: " + paraName, e);
// }
// }
// }
//
// return (T)model;
// }
}