代码

/**
* Copy the property values of the given source bean into the given target bean.
* <p>Note: The source and target classes do not have to match or even be derived
* from each other, as long as the properties match. Any bean properties that the
* source bean exposes but the target bean does not will silently be ignored.
* @param source the source bean
* @param target the target bean
* @param editable the class (or interface) to restrict property setting to
* @param ignoreProperties array of property names to ignore
* @throws BeansException if the copying failed
* @see BeanWrapper
*/
private static void copyProperties(Object source, Object target, @Nullable Class<?> editable,
	@Nullable String... ignoreProperties) throws BeansException {
Assert.notNull(source, "Source must not be null");

Assert.notNull(target, "Target must not be null");
Class<?> actualEditable = target.getClass();

if (editable != null) {

if (!editable.isInstance(target)) {

throw new IllegalArgumentException("Target class [" + target.getClass().getName() +

"] not assignable to Editable class [" + editable.getName() + "]");

}

actualEditable = editable;

}

PropertyDescriptor[] targetPds = getPropertyDescriptors(actualEditable);

List<String> ignoreList = (ignoreProperties != null ? Arrays.asList(ignoreProperties) : null);
for (PropertyDescriptor targetPd : targetPds) {

Method writeMethod = targetPd.getWriteMethod();

if (writeMethod != null && (ignoreList == null || !ignoreList.contains(targetPd.getName()))) {

PropertyDescriptor sourcePd = getPropertyDescriptor(source.getClass(), targetPd.getName());

if (sourcePd != null) {

Method readMethod = sourcePd.getReadMethod();

if (readMethod != null &&

ClassUtils.isAssignable(writeMethod.getParameterTypes()[0], readMethod.getReturnType())) {

try {

if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {

readMethod.setAccessible(true);

}

Object value = readMethod.invoke(source);

if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) {

writeMethod.setAccessible(true);

}

writeMethod.invoke(target, value);

}

catch (Throwable ex) {

throw new FatalBeanException(

"Could not copy property '" + targetPd.getName() + "' from source to target", ex);

}

}

}

}

}

}

package com.jsh.erp.utils;
import javax.servlet.http.HttpServletRequest;

import java.util.Collections;

import java.util.Enumeration;

import java.util.HashMap;
/**


@author jishenghua qq752718920  2018-10-7 15:26:27

*/

public class ParamUtils {

public static String getPageOffset(Integer currentPage, Integer pageSize) {

if (currentPage != null && pageSize != null) {

int offset = (currentPage - 1) * pageSize;

if (offset <= 0) {

return "0";

} else {

return new StringBuffer().append(offset).toString();

}

}

return null;

}

public static Integer getNumberPageOffset(Integer currentPage, Integer pageSize) {

if (currentPage != null && pageSize != null) {

int offset = (currentPage - 1) * pageSize;

if (offset <= 0) {

return 0;

} else {

return offset;

}

}

return null;

}

public static Integer getNumberPageRows(Integer currentPage, Integer pageSize) {

if (currentPage != null && pageSize != null) {

int rows = (currentPage) * pageSize;

if (rows <= 0) {

return 0;

} else {

return rows;

}

}

return null;

}
public static HashMap<String, String> requestToMap(HttpServletRequest request) {
 HashMap&lt;String, String&gt; parameterMap = new HashMap&lt;String, String&gt;();
 Enumeration&lt;String&gt; names = request.getParameterNames();
 if (names != null) {
     for (String name : Collections.list(names)) {
         parameterMap.put(name, request.getParameter(name));
         /*HttpMethod method = HttpMethod.valueOf(request.getMethod());
         if (method == GET || method == DELETE)
             parameterMap.put(name, transcoding(request.getParameter(name)));
         else
             parameterMap.put(name, request.getParameter(name));*/
     }
 }
 return parameterMap;

}

}