说明：Java开发中经常需要对HTTP请求做出处理，总结了一些方法发出来！希望对大家有用！
package com.xxx.project.core.utils.page;
import com.broader.project.core.framework.base.BaseConstants;
import javax.servlet.http.HttpServletRequest;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Enumeration;
/**
* Http请求处理方法
*
* @author 年爸
* @QQ 526704425
* @version 1.0
* @date 2019-02-25
*/
public final class WebUtil {
/**
* 是否是Ajax请求
* @param request
* @return boolean
*/
public static boolean isAjaxRequest(HttpServletRequest request) {
String requestType = getHeaderIgnoreCase(request, "x-requested-with");
if ("XMLHttpRequest".equalsIgnoreCase(requestType)) {
return true;
} else {
return false;
}
}
/**
* 是否是手机访问
* @param request
* @return
*/
public static boolean isMoblie(HttpServletRequest request) {
String[] mobileAgents = { "iphone", "android", "phone", "mobile", "wap", "netfront", "java", "opera mobi",
"opera mini", "ucweb", "windows ce", "symbian", "series", "webos", "sony", "blackberry", "dopod",
"nokia", "samsung", "palmsource", "xda", "pieplus", "meizu", "midp", "cldc", "motorola", "foma",
"docomo", "up.browser", "up.link", "blazer", "helio", "hosin", "huawei", "novarra", "coolpad", "webos",
"techfaith", "palmsource", "alcatel", "amoi", "ktouch", "nexian", "ericsson", "philips", "sagem",
"wellcom", "bunjalloo", "maui", "smartphone", "iemobile", "spice", "bird", "zte-", "longcos",
"pantech", "gionee", "portalmmm", "jig browser", "hiptop", "benq", "haier", "^lct", "320x320",
"240x320", "176x220", "w3c ", "acs-", "alav", "alca", "amoi", "audi", "avan", "benq", "bird", "blac",
"blaz", "brew", "cell", "cldc", "cmd-", "dang", "doco", "eric", "hipt", "inno", "ipaq", "java", "jigs",
"kddi", "keji", "leno", "lg-c", "lg-d", "lg-g", "lge-", "maui", "maxo", "midp", "mits", "mmef", "mobi",
"mot-", "moto", "mwbp", "nec-", "newt", "noki", "oper", "palm", "pana", "pant", "phil", "play", "port",
"prox", "qwap", "sage", "sams", "sany", "sch-", "sec-", "send", "seri", "sgh-", "shar", "sie-", "siem",
"smal", "smar", "sony", "sph-", "symb", "t-mo", "teli", "tim-", "tsm-", "upg1", "upsi", "vk-v",
"voda", "wap-", "wapa", "wapi", "wapp", "wapr", "webc", "winw", "winw", "xda", "xda-",
"Googlebot-Mobile" };
String ua = getClientInfo(request);
if ( ua != null) {
ua = ua.toLowerCase();
for (String item : mobileAgents) {
if (ua.indexOf(item) >= 0) {
return true;
}
}
}
return false;
}
/**
* 获得浏览器信息
* @param request
* @return String
*/
public static String getReferer(HttpServletRequest request) {
String referer = getHeaderIgnoreCase(request, "Referer");
if (referer != null) {
int idx = -1;
String host = getHeaderIgnoreCase(request, "Host");
// 去除host中的端口
idx = host.indexOf(":");
if ( idx > 0) {
host = host.substring(0, idx);
}
// 去除host
idx = referer.indexOf(host);
if (idx >= 0) {
referer = referer.substring(idx + host.length());
// 去除ContextPath
String ctnt = request.getContextPath();
if (referer.startsWith(ctnt)) {
referer = referer.substring(ctnt.length());
}
}
return referer;
}
return "";
}
/**
* 获得浏览器信息
* @param request
* @return String
*/
public static String getClientInfo(HttpServletRequest request) {
String browser = getHeaderIgnoreCase(request, "user-agent");
if (browser != null) {
return browser;
}
return "";
}
/**
* 得到客户端IP
* @param request
* @return String
*/
public static String getClientIp(HttpServletRequest request) {
String clientIP = "";
// 优先获取X-Forwarded-For
clientIP = getHeaderIgnoreCase(request, "X-Forwarded-For") ;
if (clientIP != null) {
String[] adds = clientIP.split(",");
return adds[0].trim();
}
// 获取X-Forwarded-For
clientIP = getHeaderIgnoreCase(request, "X-Real-IP") ;
if (clientIP != null) {
return clientIP;
}
// 获取getRemoteAddr
return request.getRemoteAddr();
}
/**
* 获取Header参数，不区分key的大小写
* @param request 请求对象
* @param key 键值
* @return
*/
public static String getHeaderIgnoreCase(HttpServletRequest request, String key) {
Enumeration<String> enumeration = request.getHeaderNames();
while (enumeration.hasMoreElements()) {
String paraName = enumeration.nextElement();
if (key.equalsIgnoreCase(paraName)) {
return request.getHeader(paraName);
}
}
return null;
}
/**
* 将HTML中的特殊字符转义
* @param text
* @return 转义后的字符
*/
public static String htmlEncode(String text) {
if (text==null || "".equals(text))
return "";
text = text.replaceAll("<", "<");
text = text.replaceAll(">", ">");
text = text.replaceAll(" ", " ");
text = text.replaceAll("\"", """);
text = text.replaceAll("\'", "'");
return text.replaceAll("\n", "<br/>");
}
/**
* 请HTML特殊字符转义，包括换行和回车
* 换行转换为$#10,回车$#13
* @param text
* @return 转义后的字符
*/
public static String htmlOutEncode(String text) {
if (text==null || "".equals(text))
return "";
text = text.replaceAll("<", "<");
text = text.replaceAll(">", ">");
text = text.replaceAll(" ", " ");
text = text.replaceAll("\"", """);
text = text.replaceAll("\'", "'");
text = text.replaceAll("\n", "
"); //换行
return text.replaceAll("\r", "
"); //回车
}
/**
* 请HTML特殊字符转义，包括换行和回车
* 换行=<br/>,回车=""
* @param text
* @return 转义后的字符
*/
public static String htmlOutEncode1(String text) {
if (text==null || "".equals(text))
return "";
text = text.replaceAll("<", "<");
text = text.replaceAll(">", ">");
text = text.replaceAll(" ", " ");
text = text.replaceAll("\"", """);
text = text.replaceAll("\'", "'");
text = text.replaceAll("\n", "<br/>"); //换行
return text.replaceAll("\r", ""); //回车
}
/**
* 字符串类型反转换
* @param text
* @return
*/
public static String htmlDecode(String text) {
if (text==null || "".equals(text))
return "";
text = text.replaceAll("<", "<");
text = text.replaceAll(">", ">");
text = text.replaceAll(" ", " ");
text = text.replaceAll(""", "\"");
text = text.replaceAll("<br/>", "\n");
text = text.replaceAll("'", "\'");
return text;
}
/**
* 将字符串中的”单引号”、“双引号”、“回车换行”、“\符号“转义，方便JSON传输
*/
public static String coverExcape(String source) {
if (source != null) {
source = source.replace("\\", "\\\\");
source = source.replace("\'", "\\\'");
source = source.replace("\t", "\\t");
source = source.replace("\"", "\\\"");
source = source.replace("\r\n", "\\r\\n");
return source;
} else {
return "";
}
}
/**
* 获取请求参数（字符串）
* @param request
* @param key
* @param defval
* @return
*/
public static String getValueString(HttpServletRequest request, String key, String defval) {
String temp = (String) request.getParameter(key);
if (temp == null || temp.equals("")) {
return defval;
} else {
return temp.trim();
}
}
/**
* 获取请求参数（long）
* @param request
* @param key
* @param defval
* @return
*/
public static long getValueLong(HttpServletRequest request, String key, long defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Long.parseLong(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（Long）
* @param request
* @param key
* @param defval
* @return
*/
public static Long getValueLong(HttpServletRequest request, String key, Long defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Long.valueOf(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（int）
* @param request
* @param key
* @param defval
* @return
*/
public static int getValueInt(HttpServletRequest request, String key, int defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Integer.parseInt(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（Integer）
* @param request
* @param key
* @param defval
* @return
*/
public static Integer getValueInt(HttpServletRequest request, String key, Integer defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Integer.valueOf(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（boolean）
* @param request
* @param key
* @param defval
* @return
*/
public static boolean getValueBoolean(HttpServletRequest request, String key, boolean defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Boolean.parseBoolean(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（boolean）
* @param request
* @param key
* @param defval
* @return
*/
public static Boolean getValueBoolean(HttpServletRequest request, String key, Boolean defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Boolean.valueOf(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（double）
* @param request
* @param key
* @param defval
* @return
*/
public static double getValueDouble(HttpServletRequest request, String key, double defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Double.parseDouble(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（Double）
* @param request
* @param key
* @param defval
* @return
*/
public static Double getValueDouble(HttpServletRequest request, String key, Double defval) {
try {
String temp = getValueString(request, key, null);
return (temp == null) ? defval : Double.valueOf(temp);
} catch(Exception e) {
return defval;
}
}
/**
* 获取请求参数（Date）<br>
* 可以解析以下传入类型的时间参数
* <pre>
* HH:mm
* HH:mm:ss
* yyyy-MM
* yyyy-MM-dd
* yyyy-MM-dd HH:mm
* yyyy-MM-dd HH:mm:ss
* </pre>
* @param request
* @param key
* @param defval
* @return
*/
public static Date getValueDate(HttpServletRequest request, String key, Date defval) {
try {
String temp = getValueString(request, key, "");
DateFormat dateFormat = null;
int len = temp.length();
switch (len) {
case 5 : dateFormat = new SimpleDateFormat(BaseConstants.FORMAT_TIME_HM); break; // HH:mm
case 7 : dateFormat = new SimpleDateFormat(BaseConstants.FORMAT_MONTH); break; // yyyy-MM
case 8 : dateFormat = new SimpleDateFormat(BaseConstants.FORMAT_TIME); break; // HH:mm:ss
case 10 : dateFormat = new SimpleDateFormat(BaseConstants.FORMAT_DATE); break; // yyyy-MM-dd
case 16 : dateFormat = new SimpleDateFormat(BaseConstants.FORMAT_DATE_HM); break; // yyyy-MM-dd HH:mm
case 19 : dateFormat = new SimpleDateFormat(BaseConstants.FORMAT_DATE_TIME); break; // yyyy-MM-dd HH:mm:ss
}
if ((dateFormat == null) || "".equals(temp)) {
return defval;
} else {
return dateFormat.parse(temp);
}
} catch(Exception e) {
return defval;
}
}
}
# BaseConstants 类源码
package com.xxx.project.core.framework.base;
/**
* Base:系统常量
*
* @author 年爸
* @QQ 526704425
* @version 1.0
* @date 2019-02-25
*/
public class BaseConstants {
/******************************************
* HTTP 信息
******************************************/
public final static double HTTP_OK = 200; //正常
public final static double HTTP_FORBIDDEN = 403; //禁止访问
public final static double HTTP_UNLOGIN = 403.1; //未登录
public final static double HTTP_NOT_FOUND = 404; //资源不存在
public final static double HTTP_SERVER_ERROR = 500; //服务器内部错误
/******************************************
* 日期格式
******************************************/
public final static String FORMAT_TIME_HM = "HH:mm";
public final static String FORMAT_TIME = "HH:mm:ss";
public final static String FORMAT_MONTH = "yyyy-MM";
public final static String FORMAT_DATE = "yyyy-MM-dd";
public final static String FORMAT_DATE_HM = "yyyy-MM-dd HH:mm";
public final static String FORMAT_DATE_TIME = "yyyy-MM-dd HH:mm:ss";
public final static String FORMAT_TIMESTAMP = "yyyy-MM-dd HH:mm:ss.S";
/******************************************
* 数字格式
******************************************/
public final static String FORMAT_NUMBER_0 = "#,##0";
public final static String FORMAT_NUMBER_2 = "#,##0.00";
public final static String FORMAT_NUMBER_3 = "#,##0.000";
/******************************************
* 默认分页数量
******************************************/
public final static int PAGE_SIZE = 10; // 默认分页数量
/**
* boolean状态（0.否 1.是）
*/
public enum BooleanStatus {
FALSE("否", false), TRUE("是", true);
/**
* 成员变量名称
*/
private String name;
/**
* 成员变量值
*/
private boolean value;
/**
* 构造方法
*
* @param name 成员变量名称
* @param value 成员变量值
*/
private BooleanStatus(String name, boolean value) {
this.name = name;
this.value = value;
}
/**
* 根据成员变量值获取对应的名称
*
* @param value 成员变量值
* @return 成员变量名称
*/
public static String getText(boolean value) {
for (BooleanStatus c : BooleanStatus.values()) {
if (c.value() == value) {
return c.name;
}
}
return null;
}
public String text() {
return name;
}
public boolean value() {
return value;
}
public int intValue(){
return value ? 1 : 0;
}
}
}注意：本文归作者所有，未经作者允许，不得转载
