毕业设计：基于JavaEE的健身房管理系统

package com.oda.base.util; import java.beans.IntrospectionException; import java.beans.PropertyDescriptor; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.lang.reflect.Type; import java.math.BigDecimal; import java.util.Date; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import org.apache.log4j.Logger; import org.json.JSONObject; import org.springframework.web.multipart.MultipartHttpServletRequest; import com.oda.base.exception.ServiceException; import com.oda.base.exception.UtilException; /** * * @author xiaoming * @since JDK 1.7 * */ public class RequestUtil { private final static Logger log = Logger.getLogger(RequestUtil.class); static final String KW_DASH = "-"; public static Object fetchParameter(Class<?> clazz, final HttpServletRequest request) throws UtilException { Object object = null; try { object = clazz.newInstance(); if (object == null) return null; // ------------------------------------------------------------------------------------------ fetchClassFieldParams(object, clazz, request); } catch (InstantiationException e) { throw new UtilException(e); } catch (IllegalAccessException e) { throw new UtilException(e); } catch (IntrospectionException e) { throw new UtilException(e); } catch (IllegalArgumentException e) { throw new UtilException(e); } catch (InvocationTargetException e) { throw new UtilException(e); } // ------------------------------------------------------------------------------------------ return object; } public static void fetchClassFieldParams(Object object, Class<?> clazz, final HttpServletRequest request) throws IntrospectionException, IllegalAccessException, IllegalArgumentException, InvocationTargetException { if (clazz == null || clazz.isPrimitive()) return; // ------------------------------------------------------------------------------------------------------------------------------------ Field[] fields = clazz.getDeclaredFields(); // ------------------------------------------------------------------------------------------------------------------------------------ for (int i = 0; i < fields.length; i++) { Field field = fields[i]; Type type = field.getGenericType(); if (Modifier.isStatic(field.getModifiers())) continue; // ------------------------------------------------------------------------------------------------------------------------------------ String fieldName = field.getName(); String valueStr = request.getParameter(fieldName); if (valueStr == null) continue; // ------------------------------------------------------------------------------------------------------------------------------------ Object value = processValue(type, valueStr); // ------------------------------------------------------------------------------------------------------------------------------------ PropertyDescriptor descriptor = new PropertyDescriptor(fieldName, clazz); Method method = descriptor.getWriteMethod(); if (method == null) continue; // ------------------------------------------------------------------------------------------------------------------------------------ method.invoke(object, value); } // ------------------------------------------------------------------------------------------------------------------------------------ fetchClassFieldParams(object, clazz.getSuperclass(), request); } public static Object fetchParameter(Object object, final MultipartHttpServletRequest request) throws UtilException { try { if (object == null) return null; if (object.getClass().isPrimitive()) throw new UtilException("Unsupported object class '" + object.getClass().getName() + "'."); // ------------------------------------------------------------------------------------------ Field[] fields = object.getClass().getDeclaredFields(); for (int i = 0; i < fields.length; i++) { Field field = fields[i]; Type type = field.getGenericType(); if (Modifier.isStatic(field.getModifiers())) continue; String fieldName = field.getName(); String valueStr = request.getParameter(fieldName); if (valueStr == null) continue; Object value = processValue(type, valueStr); // ------------------------------------------------------------------------------------------------------------------------------------ PropertyDescriptor descriptor = new PropertyDescriptor(fieldName, object.getClass()); Method method = descriptor.getWriteMethod(); if (method == null) continue; method.invoke(object, value); } } catch (IllegalAccessException e) { throw new UtilException(e); } catch (IntrospectionException e) { throw new UtilException(e); } catch (IllegalArgumentException e) { throw new UtilException(e); } catch (InvocationTargetException e) { throw new UtilException(e); } // ------------------------------------------------------------------------------------------ return object; } public static Object fetchParameter(Class<?> clazz, int index, final HttpServletRequest request) throws UtilException { Object object = null; try { object = clazz.newInstance(); if (object == null) return null; // ------------------------------------------------------------------------------------------ fetchParameter(object, clazz, index, request); } catch (InstantiationException e) { throw new UtilException(e); } catch (IllegalAccessException e) { throw new UtilException(e); } catch (IllegalArgumentException e) { throw new UtilException(e); } catch (Exception e) { throw new UtilException(e); } // ------------------------------------------------------------------------------------------ return object; } public static void fetchParameter(Object object, Class<?> clazz, int index, final HttpServletRequest request) throws UtilException { if (clazz == null) return; if (object.getClass().isPrimitive()) return; try { // ------------------------------------------------------------------------------------------ Field[] fields = clazz.getDeclaredFields(); for (int i = 0; i < fields.length; i++) { Field field = fields[i]; Type type = field.getGenericType(); if (Modifier.isStatic(field.getModifiers())) continue; String fieldName = field.getName(); String tag = object.getClass().getSimpleName() + KW_DASH + index + KW_DASH + fieldName; String valueStr = request.getParameter(tag); if (valueStr == null) continue; // ------------------------------------------------------------------------------------------ Object value = processValue(type, valueStr); // ------------------------------------------------------------------------------------------------------------------