代码如下:
package com.yanek.util; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; public class HttpUtil { /** * @param args */ public static void main(String[] args) { Map<String, String> paramValues = new HashMap<String, String>(); paramValues.put("b", "2"); paramValues.put("a", "1"); paramValues.put("c","3"); paramValues.put("d","4"); paramValues.put("e","5"); System.out.println("post params::::"+getParams("post",paramValues)); System.out.println("get params::::"+getParams("get",paramValues)); System.out.println("post params::::"+getParamsOrderByKey("post",paramValues)); System.out.println("get params::::"+getParamsOrderByKey("get",paramValues)); } /** * 得到参数列表字符串 * @param method 请求类型 get or post * @param paramValues 参数map对象 * @return 参数列表字符串 */ public static String getParams(String method,Map<String, String> paramValues) { String params=""; Set<String> key = paramValues.keySet(); String beginLetter=""; if (method.equalsIgnoreCase("get")) { beginLetter="?"; } for (Iterator<String> it = key.iterator(); it.hasNext();) { String s = (String) it.next(); if (params.equals("")) { params += beginLetter + s + "=" + paramValues.get(s); } else { params += "&" + s + "=" + paramValues.get(s); } } return params; } /** * 按照key排序得到参数列表字符串 * @param method 请求类型 get or post * @param paramValues 参数map对象 * @return 参数列表字符串 */ public static String getParamsOrderByKey(String method,Map<String, String> paramValues) { String params=""; Set<String> key = paramValues.keySet(); String beginLetter=""; if (method.equalsIgnoreCase("get")) { beginLetter="?"; } List<String> paramNames = new ArrayList<String>(paramValues.size()); paramNames.addAll(paramValues.keySet()); Collections.sort(paramNames); for (String paramName : paramNames) { if (params.equals("")) { params += beginLetter + paramName + "=" + paramValues.get(paramName); } else { params += "&" + paramName + "=" + paramValues.get(paramName); } } return params; } }
输出如下:
post params::::d=4&e=5&b=2&c=3&a=1 get params::::?d=4&e=5&b=2&c=3&a=1 post params::::a=1&b=2&c=3&d=4&e=5 get params::::?a=1&b=2&c=3&d=4&e=5
使用HashMap对象传递url参数实用工具类
时间: 2024-10-25 12:06:20