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代码

Dettan
2021-04-10 / 0 评论 / 0 点赞 / 81 阅读 / 3,548 字
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/**
* 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);
}
}
}
}
}
}




参数相关
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;
    

    }
    }

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