Java web的URL地址参数传递中文乱码的解决方案

系统很多Url地址都暴露给用户，存在安全隐患，用户可以去随意修改Url地址和参数值，为了解决这个问题提供以下解决方案，具体步骤如下：

第一步：编码URL地址，调用CommonMethod.js的rewriteUrl方法，对Url地址进行Base64编码。

例如：

  var url = basePath + "/testAction.do?ExeMethod=query&a=中国&b=2&c=3";

  url = rewriteUrl(url); //Base64转码

  转码前：

  http://localhost:9080/demo/testAction.do?ExeMethod=query&a=中国&b=2&c=3
  转码后：

  http://localhost:9080/demo/dGVzdEFjdGlvbg==_ZG8=_RXhlTWV0aG9kPXF1ZXJ5JmE95Lit5Zu9JmI9MiZjPTM=.shtml rewriteUrl方法JS代码：

/**

 * 重写Url地址

 * @param url

 */

function rewriteUrl(url){
var urlStr = "";
if(typeof(enableUrlEncrypt) != "undefined" && enableUrlEncrypt && enableUrlEncrypt != null && enableUrlEncrypt === "1"){
var queryStr = "";
var index = url.indexOf("?");
if(index != -1){
urlStr = url.substring(0, index);
queryStr = url.substring(index + 1);
}else{
urlStr = url;
}
$.base64.utf8encode = true;
index = urlStr.indexOf(".");
var suffix = urlStr.substring(index + 1);
if(index != -1 && suffix.toLowerCase() != "html"){
var idx = urlStr.lastIndexOf("/");
var prefix = "";
if(idx != -1 && idx < index){
prefix = urlStr.substring(idx + 1, index);
urlStr = urlStr.substring(0, idx);
}else{
urlStr = urlStr.substring(0, index);
}
if(prefix != ""){
urlStr += "/" + $.base64.btoa(prefix).replace(/\//g, ':');
}
if(queryStr != ""){
queryStr = encodeURI(queryStr);
queryStr = $.base64.btoa(suffix) + "_" + $.base64.btoa(queryStr);
queryStr = queryStr.replace(/\//g, ':');
}else{
queryStr = $.base64.btoa(suffix);
queryStr = queryStr.replace(/\//g, ':');
}
urlStr = urlStr + "_" + queryStr + ".shtml";
}
queryStr = null;
}else{
urlStr = url;
}
return urlStr;

}

第二步：解码URL地址并跳转，创建一个过滤器XssFilter，具体如下：

web.xml文件中增加过滤器配置：

<!-- 跨站恶意脚本攻击（XSS）过滤器   -->

<filter>

<filter-name>XssFilter</filter-name>

<filter-class>com.spsoft.eintmgr.servlet.XssFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>XssFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

过滤器代码：

public class XssFilter implements Filter{

private static String[] openUrls = null; //跳过xss过滤的uri地址

public void destroy() {}

public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest)request;
String uri = req.getRequestURI();
int stIndex = uri.lastIndexOf("/");
int edIndex = uri.indexOf(".shtml");
String url = uri;
if(stIndex != -1 && edIndex != -1 && stIndex < edIndex){
String temp = uri.substring(stIndex + 1, edIndex);
String tempArr[] = temp.split("_");
String prefix = new String(Base64.decodeBase64(tempArr[0].getBytes()));
if(tempArr.length == 2){
temp = new String(Base64.decodeBase64(tempArr[1].getBytes()));
}else if(tempArr.length > 2){
temp = new String(Base64.decodeBase64(tempArr[1].getBytes()));
temp += "?" + new String(Base64.decodeBase64(tempArr[2].getBytes("GBK")), "UTF8");
}else{
temp = "";
}
url = uri.substring(0, stIndex) + "/" + prefix + "." + temp;
int index  = uri.indexOf("?");
if(index != -1){
uri = url.substring(0, index);
}else{
uri = url;
}
}
int index = url.lastIndexOf("/");
if(index != -1 && index < url.length()){
url = url.substring(index + 1);
}
if(null != openUrls && openUrls.length > 0){
for(int i = 0; i < openUrls.length; i++){
if(uri.indexOf(openUrls[i]) != -1){ //包含跳过xss过滤的url地址，就不过滤
req.getRequestDispatcher(url).forward(req, response);
return;
}
}
}
req.getRequestDispatcher(url).forward(new RequestWrapper(req), response);
}

public void init(FilterConfig filterConfig) throws ServletException {}

}

第三步：跳转后可以获取各参数的值，例如：

@Controller

@RequestMapping("/testAction.do")

public class TestAction extends BasicAction {

@RequestMapping(params = "ExeMethod=query")
public String query(Model model, HttpServletRequest request, HttpServletResponse response) {
System.out.println("-->a:"+ request.getParameter("a"));
System.out.println("-->b:"+ request.getParameter("b"));
System.out.println("-->c:"+ request.getParameter("c"));
return "index";
}

}

打印结果：

16:13:17,415 INFO  [STDOUT] -->a:中国

16:13:17,416 INFO  [STDOUT] -->b:2

16:13:17,416 INFO  [STDOUT] -->c:3