URL傳遞中文時的亂碼
一般遇到的亂碼問題可以通過下面的方式來解決:
引用
1.確定JSP頁面頭部是否有:
Java代碼
<%@ page encoding="GBK">
<%@ page contentType="text/html; charset=GBK" %>
2.用這個轉碼:
//強烈建議頁面要編碼一致。下面的GBK也可改變但一定要和你的頁面的編碼一致
// String param= new String(request.getParameter("paramName").getBytes("ISO-8859-1"), "GBK");
//寫一個方法，可以將url中傳入的字符不會出現亂碼
Public String translate (String str) {
String tempStr = "";
try {
tempStr = new String(str.getBytes("ISO-8859-1"), "GBK");
tempStr = tempStr.trim();
}
catch (Exception e) {
System.err.println(e.getMessage());
}
return tempStr;
}
3.添加filter字符過濾器
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;
public class SetCharacterEncodingFilter implements Filter {
/**encoding 用來設定編碼格式
* The default character encoding to set for requests that pass through this filter.
*/
protected String encoding = null;
/**
* The filter configuration object we are associated with. If this value
* is null, this filter instance is not currently configured.
*/
protected FilterConfig filterConfig = null;
/**igonre 用來設定是否忽略client端說制定的編碼，默認值爲true。
* Should a character encoding specified by the client be ignored?
*/
protected boolean ignore = true;
// --------------------------------------------------------- Public Methods
/**
* Take this filter out of service.
*/
public void destroy() {
this.encoding = null;
this.filterConfig = null;
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
// Conditionally select and set the character encoding to be used
//已經設置了忽略client端設定的編碼或者request沒有設定編碼的時候，使用配置文件的編碼
if (ignore || (request.getCharacterEncoding() == null)) {
String encoding = selectEncoding(request);
if (encoding != null)
request.setCharacterEncoding(encoding);
}
// Pass control on to the next filter
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
this.encoding = filterConfig.getInitParameter("encoding");
String value = filterConfig.getInitParameter("ignore");
//配置文件裏，下面兩種情況：（1）沒有設定ignore參數。
//(2)ignore參數設置爲yes或true。當這兩種情況的時候，把ignore設置爲true。否則false。
//通過ignore來達到控制：是否啓用Filter說實現的功能。
if (value == null)
this.ignore = true;
else if (value.equalsIgnoreCase("true"))
this.ignore = true;
else if (value.equalsIgnoreCase("yes"))
this.ignore = true;
else
this.ignore = false;
}
protected String selectEncoding(ServletRequest request) {
return (this.encoding);
}
}
package com.gbs.filter;
web.xml 里加上
<filter>
<filter-name>EncodingFilter</filter-name>
<filter-class>com.gbs.web.util.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
- <filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
4.如果是通過"a.jsp?param=中文"傳遞參數,則需要:
a.在傳參數之前先把參數進行轉碼:java.net.URLEncoder.encode(param);
取值時用java.net.URLDncoder.decode(param);再轉回中文
b.在你的Tomcat目錄-->conf目錄-->server.xml裏找出這段:
<Connector
port="8080" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true"
<!--在裏邊加上這個參數-->URIEncoding="gb2312" />