request传参转化为javaBean工具类

1.java文件

/** * <p>Title:request转化为javaBean工具类</p> * <p>Description:request转化为javaBean工具类</p> */import java.lang.reflect.Field;import java.lang.reflect.Method;import java.sql.Timestamp;import java.text.SimpleDateFormat;import java.util.Enumeration;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import javax.servlet.http.HttpServletRequest;public class RequestBeanUtils {final static String PREFFIX = "set";/** *  * 把request中的值赋给Object对象,也就是把request中的parameter和object属性对应的时候 * 把object中的属性赋值,使用标准的bean * @param  request * @param  target 目标bean * @return 封装之后的bean * @throws Exception */@SuppressWarnings("unchecked")public static Object getValuesByRequest(HttpServletRequest request,Object target) throws Exception {Enumeration<String> keys = request.getParameterNames();Map<String, String> valueMap = getValuesMap(request, keys);getObject(valueMap, target, null,null);return target;}/** *  * @see    把request中的值赋给Object对象,也就是把request中的parameter和object属性对应的时候 *         把object中的属性赋值,使用标准的bean * @param  request * @param  target 目标bean * @param  unSetProperties 不复制的对象 * @return 封装之后的bean * @throws Exception */@SuppressWarnings("unchecked")public static Object getValuesByRequest(HttpServletRequest request,Object object,  String[] unSetProperties)throws Exception {Enumeration<String> keys = request.getParameterNames();Map<String, String> valueMap = getValuesMap(request, keys);getObject(valueMap, object, unSetProperties,null);return object;}/** *  * @see    把request中的值赋给Object对象,也就是把request中的parameter和object属性对应的时候 *         把object中的属性赋值,使用标准的bean * @param  request * @param  target 目标bean * @param  unSetProperties 不复制的对象 * @param  proertiesMap 不一致属性匹配 * @return 封装之后的bean * @throws Exception */@SuppressWarnings("unchecked")public static Object getValuesByRequest(HttpServletRequest request,Object object,  String[] unSetProperties,Map<String,String> proertiesMap)throws Exception {Enumeration<String> keys = request.getParameterNames();Map<String, String> valueMap = getValuesMap(request, keys);getObject(valueMap, object, unSetProperties,proertiesMap);return object;}/** * 获取request参数及值map(键值对) * @param request * @param keys * @return * @throws Exception */protected static Map<String, String> getValuesMap(HttpServletRequest request, Enumeration<String> keys) throws Exception {if (keys == null)return null;Map<String, String> value = new HashMap<String, String>();while (keys.hasMoreElements()) {String element = keys.nextElement();value.put(element, request.getParameter(element));}return value;}/** * 转化javaBean * @param valueMap request获取的键值 * @param object javaBean对象 * @param unSetProperties 不复制的对象 * @param proertiesMap 不一致属性匹配 * @return * @throws Exception */protected static Object getObject(Map<String, String> valueMap,Object object, String[] unSetProperties,Map<String,String> proertiesMap) throws Exception {List<String> unSet = null;if (unSetProperties != null)unSet=java.util.Arrays.asList(unSetProperties);if (valueMap == null)return null;for (Iterator<String> iter=valueMap.keySet().iterator();iter.hasNext();) {String key = iter.next();if (unSet != null && unSet.contains(key)) {continue;}String methodValue = valueMap.get(key);if(proertiesMap!=null && proertiesMap.containsKey(key)){key=proertiesMap.get(key);}if (methodValue != null)setValue(object, key, methodValue);}return object;}/** * 给javaBean中的属性字段赋值 * @param obj  javaBean对象 * @param name bean属性 * @param value 值 * @throws Exception */protected static void setValue(Object obj, String name, String value)throws Exception {Field field = null;try {field = obj.getClass().getDeclaredField(name);} catch (Exception e) {return;}if (field == null) {return;}Method method = obj.getClass().getDeclaredMethod(getSetMethodName(name), field.getType());String type = field.getGenericType().toString();if(type.equals("int") || type.equals("class java.lang.Integer")){if(value!=null && !value.equals("")){method.invoke(obj, Integer.parseInt(value));}}else if(type.equals("double") || type.equals("class java.lang.Double")){if(value!=null && !value.equals("")){method.invoke(obj, Double.valueOf(value));}}else if(type.equals("float") || type.equals("class java.lang.Float")){if(value!=null && !value.equals("")){method.invoke(obj, Float.valueOf(value));}}else if(type.equals("char") || type.equals("class java.lang.Character")){if(value!=null && !value.equals("")){method.invoke(obj, Character.valueOf(value.charAt(0)));}}else if(type.equals("class java.util.Date")){if(value!=null && !value.equals("")){String format = value.length()==10?"yyyy-MM-dd":"yyyy-MM-dd HH:mm:ss";SimpleDateFormat sdf = new SimpleDateFormat(format);method.invoke(obj, sdf.parse(value));}                }else if(type.equals("class java.sql.Timestamp")){if(value!=null && !value.equals("")){String format = value.length()==10?"yyyy-MM-dd":"yyyy-MM-dd HH:mm:ss";SimpleDateFormat sdf = new SimpleDateFormat(format);method.invoke(obj, new Timestamp(sdf.parse(value).getTime()));}}else{method.invoke(obj, value);}}/** * bean属性转化为set方法 * @param methodName * @return */protected static String getSetMethodName(String methodName) {String first = methodName.substring(0, 1);String suffex = methodName.substring(1);return (PREFFIX + first.toUpperCase() + suffex).toString();}}

2.调用方法

User user = new User();RequestBeanUtils.getValuesByRequest(request,user);