获取HttpServletRequest请求参数的工具类

来源：互联网发布：笑傲江湖删减知乎编辑：程序博客网时间：2024/05/21 03:24
import java.math.BigDecimal;import java.util.Enumeration;import javax.servlet.http.HttpServletRequest;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;public class ParamUtil {private static Log logger = LogFactory.getLog(ParamUtil.class.getName());/** * 获取当前访问的url * @param request * @return */public static String getQueryUrl(HttpServletRequest request){return request.getContextPath() + request.getServletPath() + "?" + request.getQueryString();}/** * 从request获取整数类型的参数 * @param request * @param paramStr * @param defaultValue * @return 找不到返回null */public static Integer getInteger(HttpServletRequest request, String paramStr){String value = request.getParameter(paramStr);if(value == null || "".equals(value)){return null;}else{return Integer.valueOf(value);}}/** * 从request获取整数类型的参数 * @param request * @param paramStr * @param defaultValue 默认值 * @return */public static Integer getInteger(HttpServletRequest request, String paramStr, Integer defaultValue){Integer result = getInteger(request, paramStr);if(result == null){return defaultValue;}else{return result;}}/** * 从request获取整数类型的参数 * @param request * @param paramStr * @param defaultValue * @return 找不到返回null */public static BigDecimal getBigDecimal(HttpServletRequest request, String paramStr){String value = request.getParameter(paramStr);if(value == null || "".equals(value)){return null;}else{return new BigDecimal(value);}}/** * 从request获取整数类型的参数 * @param request * @param paramStr * @param defaultValue 默认值 * @return */public static BigDecimal getBigDecimal(HttpServletRequest request, String paramStr, BigDecimal defaultValue){BigDecimal result = getBigDecimal(request, paramStr);if(result == null){return defaultValue;}else{return result;}}/** * 从request获取字符串类型的参数 * @param request * @param paramStr * @param defaultValue * @return 找不到返回null */public static String getString(HttpServletRequest request, String paramStr){String value = request.getParameter(paramStr);return value;}/** * 从request获取字符串类型的参数 * @param request * @param paramStr * @param defaultValue 默认值 * @return */public static String getString(HttpServletRequest request, String paramStr, String defaultValue){String result = getString(request, paramStr);if(result == null){return defaultValue;}else{return result;}}// 打印出来所有参数@SuppressWarnings("unchecked")public static void printParameters(HttpServletRequest request){Enumeration<String> e = request.getParameterNames();logger.info("---------------------------request所有请求参数打印开始----------------------------------");while (e.hasMoreElements()) {String string = (String) e.nextElement();if(logger != null){logger.info(string+"="+request.getParameter(string));}}logger.info("---------------------------request所有请求参数打印结束----------------------------------");}}
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