JAVA實(shí)現(xiàn)URL rewrite偽靜態(tài)，具體代碼如下：
urlrewrite偽靜態(tài)
<rule>
<from><![CDATA[/products/id-([0-9]+)-pid-([0-9]+).html]]></from>
<to><![CDATA[/products/index.jsp?id=$1&pid=$2]]></to>
</rule>
你不是想做java版的偽靜態(tài)嗎 這個(gè)比外國(guó)的urlrewrite.jar效率更高
JAVA代碼：
package org.apple.util.urlrewrite;
/**
*
曹正輝 QQ：330937205 SimpleOnline 開發(fā)團(tuán)隊(duì)
*
*/
public class Rule {
@Override
public String toString() {
return "Rule [from=" + from + ", to=" + to + "]";
}
private String from;
private String to;
public void setFrom(String from) {
this.from = from;
}
public String getFrom() {
return from;
}
public void setTo(String to) {
this.to = to;
}
public String getTo() {
return to;
}
/**
* 真正的處理方法
*
*/
public String dealWithUrl(String url, Boolean isHandler) {
boolean isMatches = url.matches(from);
if (isMatches) {
isHandler = true;
url = url.replaceAll(from, to);
return url;
} else {
return url;
}
}
}
package org.apple.util.urlrewrite;
/**
*
曹正輝 QQ：330937205 SimpleOnline 開發(fā)團(tuán)隊(duì)
*
*/
public class StringUtils {
public static boolean isBlank(String string) {
if (string == null) {
return true;
} else {
return false;
}
}
public static boolean isNotBlank(String string) {
if (string != null && "".equals(string.trim())) {
return true;
} else {
return false;
}
}
}
package org.apple.util.urlrewrite;
import java.io.File;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
曹正輝 QQ：330937205 SimpleOnline 開發(fā)團(tuán)隊(duì) 2013-9-2
*
*/
public class UrlRewriteFilter implements Filter {
private UrlRewriter urlRewriter;
private boolean reloadConfig = true;
private long reloadConfigInterval = 60;
private String configPath = "/WEB-INF/urlrewrite.xml";
private String configURLPath = "";
private long lastReloadConfigCheckTime = System.currentTimeMillis();
private long configFilelastModified = System.currentTimeMillis();
public void init(FilterConfig filterConfig) throws ServletException {
String configPath = filterConfig.getInitParameter("configPath");
if (StringUtils.isNotBlank(configPath)) {
this.configURLPath = WebPath.WebRootPath + configPath;
File file = new File(this.configURLPath);
if (!file.exists()) {
throw new RuntimeException("urlrewrite所需的配置文件路徑出錯(cuò)");
}
} else {
this.configURLPath = WebPath.WebRootPath + this.configPath;
File file = new File(this.configURLPath);
if (!file.exists()) {
throw new RuntimeException("urlrewrite.xml配置文件不存在");
}
}
urlRewriter = new UrlRewriter(configURLPath);
}
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
if (this.reloadConfig) {
reloadConfig();
}
try {
boolean isOk = urlRewriter.dealWithUrl((HttpServletRequest) servletRequest, (HttpServletResponse) servletResponse);
if (isOk) {
// 自動(dòng)跳轉(zhuǎn)
} else {
filterChain.doFilter(servletRequest, servletResponse);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 每次http訪問的時(shí)候根據(jù)配置文件檢查時(shí)間大于其系統(tǒng)規(guī)定的間隔時(shí)間和配置文件是否修改，來決定是否重新加載配置文件
*/
private void reloadConfig() {
/**
* 下面是自動(dòng)加載配置文件的算法實(shí)現(xiàn)
*/
long now = System.currentTimeMillis();
if ((now - this.reloadConfigInterval > this.lastReloadConfigCheckTime)) {
this.lastReloadConfigCheckTime = now;
File file = new File(this.configURLPath);
long lastModified = file.lastModified();
if (configFilelastModified != lastModified) {
configFilelastModified = lastModified;
// 修改后重新加載到內(nèi)存
urlRewriter = new UrlRewriter(configURLPath);
}
}
}
public void destroy() {
}
}
package org.apple.util.urlrewrite;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
/**
*
曹正輝 QQ：330937205 SimpleOnline 開發(fā)團(tuán)隊(duì)
*
*/
public class UrlRewriter {
private Rule[] rules;
//構(gòu)建url匹配規(guī)則
public UrlRewriter(String configURLPath) {
ArrayList<Rule> roleUrlList = getAllRileList(configURLPath);
int size = roleUrlList.size();
rules = new Rule[size];
if (size != 0) {
for (int i = 0; i < size; i++) {
rules[i] = roleUrlList.get(i);
}
}
}
//構(gòu)建url匹配規(guī)則
@SuppressWarnings("unchecked")
public ArrayList<Rule> getAllRileList(String filePath) {
Map<String, String> regularExpressionMap = new HashMap<String, String>();
ArrayList<Rule> roleUrlList = null;
try {
SAXReader reader = new SAXReader();
Document document = reader.read(new File(filePath));
Element root = document.getRootElement();
roleUrlList = new ArrayList<Rule>();
for (Iterator<Rule> iterator = root.elementIterator(); iterator.hasNext();) {
Element element = (Element) iterator.next();
Rule rule = new Rule();
rule.setFrom(element.elementText("from"));
rule.setTo(element.elementText("to"));
String from = element.elementText("from");
if (regularExpressionMap.containsKey(from)) {
throw new RuntimeException("from: " + from + "值重復(fù)");
}
regularExpressionMap.put(from, "ok");
// 加入之前需要檢測(cè)該from和to所對(duì)應(yīng)的正則表達(dá)式是否存在
roleUrlList.add(rule);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
return roleUrlList;
}
public boolean dealWithUrl(HttpServletRequest request, HttpServletResponse response) throws Exception {
String url = request.getServletPath().trim();// 只是針對(duì)
String url_copy = url;
if (rules.length != 0) {
int rulesLength = rules.length;
Boolean isHandler = false;
for (int i = 0; i < rulesLength; i++) {
url = rules[i].dealWithUrl(url, isHandler);
//如果匹配則進(jìn)行替換,然后進(jìn)行頁面的跳轉(zhuǎn)
if (url != null && !"".equals(url) && (!url_copy.equals(url))) {
request.getRequestDispatcher(url).forward(request, response);
return true;
}
}
}
return false;
}
}
package org.apple.util.urlrewrite;
public class WebPath {//獲取web根目錄
/**
* @return eg:/D:/apache-tomcat-6.0.35/webapps/urlrewrite/
*/
public static String WebRootPath = WebPath.class.getResource("/").getPath().toString().replace("/WEB-INF/classes/", "");
}
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="
xmlns:xsi=""
xsi:schemaLocation=
">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<display-name>SimpleOnline 開發(fā)團(tuán)隊(duì)開發(fā)的一個(gè)UrlRewrite插件--注意該過濾器建議配置為第一個(gè)過濾器</display-name>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.apple.util.urlrewrite.UrlRewriteFilter</filter-class>
<init-param>
<param-name>configPath</param-name>
<param-value>/WEB-INF/urlrewrite.xml</param-value>
</init-param>
<init-param>
<description>用于信息調(diào)試--該插件自帶SimpleOnline 開發(fā)團(tuán)隊(duì)的日志[log4j]記錄插件,建議自己修改源碼中的日志記錄方式,如果需要修改本團(tuán)隊(duì)的日志插件為自身的配置只需修改Apple-CommonsLogging.jar/log4j.properties中的配置</description>
<param-name>devMode</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>UrlRewriteFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
<?xml version="1.0" encoding="utf-8"?>
<!--
版權(quán)歸曹正輝所有 QQ：330937205 SimpleOnline 開發(fā)團(tuán)隊(duì)[2013-1-1年成立,國(guó)內(nèi)開源開發(fā)團(tuán)隊(duì)SimpleOnline 歡迎您的加入][負(fù)責(zé)人曹正輝]
配置如下
<filter>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.apple.util.urlrewrite.UrlRewriteFilter</filter-class>
<init-param>
<param-name>configPath</param-name>
<param-value>/WEB-INF/urlrewrite.xml</param-value>
</init-param>
<init-param>
<param-name>devMode</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>UrlRewriteFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
下面是支持的策略
注意<from><![CDATA[/test]]></from>
<to><![CDATA[/rewrite.jsp]]></to>中間不要有空格
-->
<urlrewrite>
<rule>
<from><![CDATA[/test]]></from>
<to><![CDATA[/rewrite.jsp]]></to>
</rule>
<rule>
<from><![CDATA[/test/test]]></from>
<to><![CDATA[/rewrite.jsp]]></to>
</rule>
<rule>
<from><![CDATA[/some/old/page.html]]></from>
<to><![CDATA[/some/new/page.html]]></to>
</rule>
<rule>
<from><![CDATA[/test/test/(.*)]]></from>
<to><![CDATA[/test2/test2/$1]]></to>
</rule>
<rule>
<from><![CDATA[/products/([0-9]+)]]></from>
<to><![CDATA[/products/index.jsp?id=$1]]></to>
</rule>
<rule>
<from><![CDATA[/products/([0-9]+)/([0-9]+)]]></from>
<to><![CDATA[/products/index.jsp?id=$1&pid=$2]]></to>
</rule>
</urlrewrite>
<!-- 插件支持:自動(dòng)重新加載rule列表 -->